World of Ham Radio 1997/WOHR97_AmSoft_(1997-02-01).iso/usenets/1995_11/_antenna.txt

Text File | 1997-02-01 | 803KB | 18,947 lines

The World of Ham Radio CD-ROM



From Unknown Fri Nov 03 12:24:02 1995
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From: [e-mail] (KS9K Paul Hellenberg)
Newsgroups: rec.radio.amateur.antenna
Subject: 80M KLM
Date: 1 Nov 95 00:59:00 GMT
Organization: ucsd usenet gateway
Lines: 11
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

Hello All

I just signed on tto the refector and a friend told me that there was a KLM
80M-4 for sale I must have copied the phone number wrong because I got
a very suprise answer on the other end.

Can aonyone help ???????????


Paul KS9K



From Unknown Fri Nov 03 12:24:03 1995
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From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help identify rotor"
Date: 1 Nov 95 03:14:20 GMT
Organization: ucsd usenet gateway
Lines: 3
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

The mailing list "identify" could not be found.
You may use the INDEX command to get a listing
of available mailing lists.


From Unknown Fri Nov 03 12:24:04 1995
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From: [e-mail] (Alvin Koffman)
Newsgroups: rec.radio.amateur.antenna
Subject: MFJ-1798 10 Band antenna help.
Date: Wed, 01 Nov 95 03:20:58 GMT
Organization: Columbus PBX
Lines: 15
Message-ID: <476pgi$[e-mail]>
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X-Newsreader: News Xpress Version 1.0 Beta #3

I'm looking for people who own a MFJ-1798 10 band verticle.  I'm thinking of
geting one and would like to know the falowing:

How does it handle wind load?  I'm going to mount it on a heavy pole next to
my singel story house 15-20 Ft.

How does it do on 80M ground wave?  What about 6M and 2M?

How hard is it to put togather, and tune up?

Is it worth the money?

Thanks
Alvin
ARS KA9QLQ


From Unknown Fri Nov 03 12:24:05 1995
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From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Broadband Transformer Cores? Help!
Date: Wed, 01 Nov 95 06:53:33 GMT
Lines: 60
Message-ID: <[e-mail]>
References: <475msb$[e-mail]>
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   pete brunelli <[e-mail]> wrote:
>
>I have been playing with the WA2WVL Broadband Transmitting Wire from
>November 1995 QST, and am looking for some feedback on the use of
>powdered iron cores in place of ferrites.
         <<snip>>
>My main objective is to wind a broadband 9:1 transformer on a 200 size
>powdered iron core.  The ft-240-61 is $12.40 and i have one of 'em.  I
>also have 2 t-200-? iron cores, all from Palomar.
>
>I have gleaned that i am probably looking at more trifilar windings in
>a similar configuration.

I didn't see the article you're referring to so I don't know the
frequency response required of the transformer.  The rule of thumb
for the windings is that they should exhibit a minimum XL equal to
four to five times the impedance of the circuit at the lowest
frequency of operation.  For example, if 80m is the lowest band of
operation and the input impedance of the transformer is expected to
be 50 ohms, the XL of the input winding should be 200 to 250 ohms
minimum at 3.5 MHz.

This doesn't mean that a low-permeability iron powder core can be
substituted for ferrite by merely increasing the number of turns.
Additional turns may increase the inter-winding capacitance to a
point of limiting the high frequency response of the transformer.
It's also possible to create series resonances in the windings that
will practically destroy the usefulness of the transformer for
broadband applications.

Generally speaking, I limit the number of turns on these cores to
about twelve.  More than that means a higher permeability is probably
needed, or multiple cores can be stacked.  As it turns out, 12 turns
on the FT-240-61 core you mentioned will yield an XL of 282 ohms at
1.8 MHz, so this size/material is probably suitable for your use.  If
a 1:9 ratio is required, I would wind the device with 12 trifilar turns.
If the lower frequency limit will be 3.5 MHz, you could reduce the
winding to 10 turns (380 ohms XL @ 3.5 MHz) or even 8 turns (243 ohms).

As a side note, I strongly recommend that you check the XL of any
broadband transformer against the impedance likely to be presented
in use.  I have found that a number of published designs do not meet
the requirement for minimum XL, although they continue to appear in
print year after year.  It is obvious to me that a number of these
designs were either incorrectly formulated, or have been misapplied
by subsequent users and publishers.  Again, I haven't read the
article you mentioned, but I would be particularly careful to analyze
the impedance that a longwire will present to the transformer.

Incidentally, FT-240-61 cores are $9.00 each direct from Amidon in
quantities of 1 to 24.  You can reach them at [phone].

Let me know if you need any specific calculations for other cores or
winding combinations.  I have most of the formulas in spreadsheets
and it only takes a few minutes to crank out the numbers.

73,

Jack  WB3U


From Unknown Fri Nov 03 12:24:06 1995
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From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 2.4Ghz dish...??
Date: Wed, 01 Nov 95 07:11:16 GMT
Lines: 18
Message-ID: <[e-mail]>
References: <4752jk$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
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  ted <ted> wrote:

>It would seem that building 'half parabolic' reflectors must be
>simpler than a full blown dish reflector, and if loss in gain is
>not too much then probably a good substitute for the homebrewer...

I can't comment on the helical element, but partial parabolic
reflectors are used routinely for MMDS (2.5 - 2.7 GHz).  Many of
these antennas use reflectors in the shape of a curved, rectangular
grid, about 1/3 the area of a full parabola.  Depending on the
"diameter" of the rectangle, gain figures are quoted from about
15 dBi to 28 dBi.  I believe the 28 dBi versions are approximately
1.3M across.

73,

Jack  WB3U


From Unknown Fri Nov 03 12:24:07 1995
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From: [e-mail] (Gary M. Belcaster)
Newsgroups: rec.radio.amateur.antenna
Subject: 20 meter vertical
Date: Wed, 01 Nov 1995 07:32:16 -0500
Organization: University of Florida
Lines: 7
Message-ID: <[e-mail]>
NNTP-Posting-Host: ppp-01-ts3.nerdc.ufl.edu

Anyone out there have experience modifying the Butternut HF2V 40 - 80
meter vertical for 20 meters ?  I'd like to hear from you.  Thanks in
advance.

gary
KA9RAO
[e-mail]


From Unknown Fri Nov 03 12:24:08 1995
Newsgroups: rec.radio.amateur.antenna
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From: [e-mail] (M. Davies)
Subject: G5RV: It wants 70 feet of coax?
X-Nntp-Posting-Host: lafn.org
Message-ID: <[e-mail]>
Sender: [e-mail]
Reply-To: [e-mail] (M. Davies)
Organization: The Los Angeles Free-Net
Date: Wed, 1 Nov 1995 07:49:51 GMT
Lines: 26




   I just got my first HF rig. It's a neat little Icom 706.

For my neat new radio I chose as my antenna a G5RV. My eyes opened wide
as I read the brief manual. It says the antenna wants to see 70 feet of coax
connected to it for "proper" performance. The 30 feet of lead-in wire is
perfect as is for my setup. I need about 6 feet of coax.



                        Ideas????????????????????


                                       M. Davies






--
SALE. Yes! Be the first one on your block to take over the world.
 The Super-Conductive Magnetic Infindibulator.   Only $99,999.00
 ( As seen in the Farmers Almanac.)


From Unknown Fri Nov 03 12:24:09 1995
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From: [e-mail] (Robert Eliassen)
Newsgroups: rec.radio.amateur.antenna
Subject: Quad
Date: Wed, 01 Nov 1995 08:49:19 GMT
Organization: InterLink AS, Trondheim, Norway
Lines: 18
Message-ID: <477cag$[e-mail]>
NNTP-Posting-Host: trh-ppp8.interlink.no
X-Newsreader: Forte Free Agent 1.0.82


Hi!

I'm looking for a description to build a HUGE quad for HF. Could
someone give me a clue, an URL or whatever...

The quad should of multiband-type (spider-quad?), and I would like to
be able to work the 40mtr band (if possible). I know it requires BIG
space, but that's no problem. On 20mtr I would like to have at least
10dB gain. Does it exsist a 4-element quad for the 20mtr band?

All info on quad-antennas will be appreciated.

Please reply in email because I'm not really often browsing the
newsgroups.

73 de Bob, LA6GHA    ( [e-mail]  or  [e-mail] )



From Unknown Fri Nov 03 12:24:09 1995
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From: "Anthony R. Gold" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: multiple antenna question
Date: Wed, 01 Nov 95 09:30:20 GMT
Organization: Microvest Limited, London
Lines: 11
Message-ID: <[e-mail]>
References: <[e-mail]> <476fa9$[e-mail]>
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In article <476fa9$[e-mail]> [e-mail] "The2X4" writes:

An explanation of the effect of antenna gain on received signal level
based upon the validity of the formula: Power = Voltage / Resistance :-(

--
   Tony - G3SKR / AA2PM                  email: [e-mail]
                                                [e-mail]
                                        packet: g3skr@n0ary.#nocal.ca.usa.na



From Unknown Fri Nov 03 12:24:10 1995
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From: [e-mail] (Brian Oakley)
Newsgroups: rec.radio.amateur.antenna
Subject: Radio Shack Frequency Counter
Date: 1 Nov 1995 09:52:14 -0600
Organization: DFWNet -- Public Internet Access
Lines: 7
Message-ID: <47853e$[e-mail]>
NNTP-Posting-Host: dfw.net
X-Newsreader: TIN [version 1.2 PL2]

[ Article crossposted from rec.radio.cb ]
[ Author was Brian Oakley ]
[ Posted on 1 Nov 1995 09:46:17 -0600 ]

A while back, someone posted a mod for a frequency hold button for the
Radio Shack Frequency counter.  Can someone email it to me or repost it
or tell me where I can find it? Thanks.  [e-mail]


From Unknown Fri Nov 03 12:24:11 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.msfc.nasa.gov!news.larc.nasa.gov!night.primate.wisc.edu!newsspool.doit.wisc.edu!decwrl!purdue!yuma!lamar.ColoState.EDU!not-for-mail
From: [e-mail] (Watts)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: RS Freq Counter Hold
Date: 1 Nov 1995 13:10:21 -0700
Organization: Colorado State University, Fort Collins, CO  80523
Lines: 22
Message-ID: <478k7d$[e-mail]>
References: <47853e$[e-mail]>
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X-Newsreader: TIN [version 1.2 PL2]

Brian Oakley ([e-mail]) wrote:
: A while back, someone posted a mod for a frequency hold button for the
: Radio Shack Frequency counter.  Can someone email it to me or repost it
: or tell me where I can find it? Thanks.  [e-mail]

How to add a hold function to the Radio Shack RF Frequency Counter:

Ground TP 17.  In the schematic, TP17 is pin one of U3, connected to
+5V thru a 47k resistor.  On the circuit board, TP17 is on the display
side, just right of the lower-right corner of the IC.  Grounds are about
1/4 inch below and to the right, the three non-tinned points in the large
area of metal.  TP17 is the tinned pad next to a SM resistor marked '473'
for 47k.

I rigged a momentary switch to ground TP17 thru a 1k resistor (you never
can tell) and it works just fine!  I drilled a small hole to mount the switch
just above the plastic depression so I could push the button with my right
thumb.  A small toggle switch would fit if you want to hold longer.


Galen, KF0YJ



From Unknown Fri Nov 03 12:24:12 1995
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From: [e-mail] (The2X4)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Broadband Transformer Cores? Help!
Date: 1 Nov 1995 16:18:09 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 26
Sender: [e-mail]
Message-ID: <478o6h$[e-mail]>
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X-Newsreader: AOL Offline Reader

In article <[e-mail]>,
[e-mail] (WB3U) writes:

>Let me know if you need any specific calculations for other cores or
>winding combinations.  I have most of the formulas in spreadsheets
>and it only takes a few minutes to crank out the numbers.
>
>73,
>
>Jack  WB3U
>
>

Hi

How about T-200-6. 4 to 1  1 core and 2 stacked?

Frequency of interest  14 mHz to 30 mHz.

Power capability as combiner wound with RG58? Wire?

I think my calculations from the Motorola RF  data book may be wrong.

Looking forward to your reply.

Carl N9EFJ


From Unknown Fri Nov 03 12:24:13 1995
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From: [e-mail] (The2X4)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: GAP antennas?
Date: 1 Nov 1995 16:18:13 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 14
Sender: [e-mail]
Message-ID: <478o6l$[e-mail]>
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X-Newsreader: AOL Offline Reader

In article <[e-mail]>,
[e-mail] (Stanley W. Henson) writes:

>Any experience stories??
>
>Thanks,
>Stan
>KB9UM

Hi

Had one. BBBiiiiiigggggg external dummy load.

Carl


From Unknown Fri Nov 03 12:24:14 1995
Path: news.epix.net!news.sprintlink.net!buffnet2.buffnet.net!usenet
From: [e-mail] (dave)
Newsgroups: rec.radio.amateur.antenna
Subject: Need Help Understanding Very Short Antennas
Date: 1 Nov 1995 16:19:12 GMT
Organization: BuffNET
Lines: 13
Message-ID: <4786m0$[e-mail]>
NNTP-Posting-Host: dppp31.buffnet.net
X-Newsreader: WinVN 0.92.2

Greetings,

Often I have seen examples of very short (ie: three inch loop on a pcb @ 350 MHz) antennas
used in receive applications. I am trying to understand the basic relationships (ie :geometric )
that allow these types of antennas to work properly. Most texts that I have come across do not
discuss this sort of antenna/receiver.

Are they just  high Q lumped element devices ?

Clearly the impedance is some nominally high value. What are the implications of a
1K/ 100K Z or higher on the front end on a rf amplifier ?

Thanks for any word of wisdom here ...


From Unknown Fri Nov 03 12:24:14 1995
Path: news.epix.net!news.sprintlink.net!buffnet2.buffnet.net!usenet
From: [e-mail] (dave)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: multiple antenna question
Date: 1 Nov 1995 16:33:03 GMT
Organization: BuffNET
Lines: 12
Message-ID: <4787fv$[e-mail]>
References: <[e-mail]> <476fa9$[e-mail]> <[e-mail]>
NNTP-Posting-Host: dppp31.buffnet.net
X-Newsreader: WinVN 0.92.2

In article <[e-mail]>, "Anthony R. Gold" <[e-mail]> says:
>
>In article <476fa9$[e-mail]> [e-mail] "The2X4" writes:
>
>An explanation of the effect of antenna gain on received signal level
>based upon the validity of the formula: Power = Voltage / Resistance :-(
>
>

I believe the above relationship describes CURRENT. Perhaps you meant to say P = V*V / R (V squared).

Cheers ....


From Unknown Fri Nov 03 12:24:15 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!dispatch.news.demon.net!demon!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: Wed, 01 Nov 95 16:53:04 GMT
Lines: 17
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
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X-Newsreader: News Xpress Version 1.0 Beta #4

   [e-mail] (M. Davies) wrote:
>
>   I just got my first HF rig. It's a neat little Icom 706.
>
>For my neat new radio I chose as my antenna a G5RV. My eyes opened wide
>as I read the brief manual. It says the antenna wants to see 70 feet of
coax
>connected to it for "proper" performance. The 30 feet of lead-in wire is
>perfect as is for my setup. I need about 6 feet of coax.

For maximum efficiency, feed the antenna with ladder line only and
use a balanced tuner.

73,

Jack  WB3U


From Unknown Fri Nov 03 12:24:16 1995
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From: [e-mail] (Tapez ici votre nom)
Newsgroups: rec.radio.amateur.antenna
Subject: Antenna in mountain
Date: 1 Nov 1995 16:53:12 GMT
Organization: Bati sa
Lines: 4
Message-ID: <4788lo$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: cyber20.imaginet.fr
X-Newsreader: WinVN 0.92.6+

I need information about antenna used in mountain area
for decametrique band

thankyou


From Unknown Fri Nov 03 12:24:17 1995
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From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How does the BETA work?
Date: Wed, 01 Nov 95 17:01:58 GMT
Lines: 13
Message-ID: <[e-mail]>
References: <475ubf$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
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   [e-mail] (Christopher Scibelli) wrote:

>I'm reading an article about the opening debut of the Billion Channel
>Extraterestrial Assay (BETA) which is gonna search for ET's.  How are
>they monitoring all those frequencies with one antenna?

C'mon Chris, everyone knows aliens use anti-channels.  Monitoring
more channels reduces the bandwidth.  :)

73,

Jack WB3U


From Unknown Fri Nov 03 12:24:18 1995
Path: news.epix.net!news.sprintlink.net!EU.net!sun4nl!newshost.GlobalXS.nl!usenet
From: [e-mail] (Wim Bovendeert ( PAoWCA ))
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help With Old RG-8
Date: Wed, 01 Nov 1995 18:27:13 GMT
Organization: Dutch Channel Ltd.
Lines: 38
Message-ID: <478dqt$[e-mail]>
References: <[e-mail]>
Reply-To: [e-mail]
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X-Newsreader: Forte Free Agent 1.0.82


Testing old cable , see also arrl antenna book,
1, short the end of the cable
2, put low power on the cable with swr bridge
3, acc to the swr the attenuation can be found

some values:    swr of 5 means 2 db loss
                swr of 2 means 5 db loss
                swr of better then 2 rubbish

Bye PA0WCA



[e-mail] (Big Dave) wrote:

>hello,  i had a problem with my RG-8 last night, on 2 meters
>i was talking and all of a sudden my swr meter went full scale.
>so i stopped and started trouble shooting....i found the problem
>i'm a member of W7YH, radio frat at WSU and they gave me some
>old cable that was donated to the club because i could use it.
>Well the problem was that the inner copper brade is very
>oxydized... i was able to cut a few inches off, and then
>individually sand each strand to expose good copper, then i
>put the RG-8 connector back on and soldered it, now everything
>is fine..... So is it bad to use cable that is as old as this cable
>appears to be?   I'm sure the whole cable is as corroded as the ends..
>it's only 55 feet and its ONLY 2 meter so it's not the end of the
>world but i think i might be using cable i shouldn't be.....
>thanks...

>-.-. --.-  --.- .-. .-  -.- -.-. --... -. ..-. --..
>      Big Dave - [e-mail]
>KC7NFZ - <Pullman repeater group (kb7auk) INTERTIE>
>       Pullman Simplex 146.415 or 146.520





From Unknown Fri Nov 03 12:24:19 1995
Path: news.epix.net!news.sprintlink.net!news.texas.net!news-out.internetmci.com!newsfeed.internetmci.com!EU.net!Belgium.EU.net!ping.be!news
From: Neal Campbell <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: DJ2UT- Sommer antenna
Date: 1 Nov 1995 19:38:16 GMT
Organization: PING Belgium
Lines: 15
Message-ID: <478ib8$[e-mail]>
References: <46v848$[e-mail]>
NNTP-Posting-Host: dialup25.brussels2.eunet.be
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
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X-URL: news:46v848$[e-mail]

I also have a Sommer, XP707 with the 40m add-on.  I also have a 40 meter
dipole, which can give some comparison.

In almost all cases the XP707 beats the dipole. It has some
directionality, probably acts like a rotating dipole.

The antennas are very heavy. I also use a Hazer and thats how I hoisted
the beast. Mine weights around 100 lbs.

The people at Sommer are very nice also!

73,
Nea;




From Unknown Fri Nov 03 12:24:20 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!uwm.edu!math.ohio-state.edu!magnus.acs.ohio-state.edu!stargate!rdixon
From: [e-mail] (Bob Dixon)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How does the BETA work?
Date: 1 Nov 1995 19:39:48 GMT
Organization: The Ohio State University
Lines: 10
Sender: rdixon@stargate (Bob Dixon)
Message-ID: <478ie4$[e-mail]>
References: <475ubf$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: stargate.acs.ohio-state.edu


All the channels are monitored at the same time; there is no scanning.
The channel widths are somewhere around 0.1 Hz, maybe .01 Hz.
There 3 or 4 receivers running on different antennas and dish feeds, so any one
receiver has about 250 million channels. The channels are obtained by a fourier
transform computer process, not thru analog receivers like hams commonly use.


                                        Bob Dixon W8ERD
                                         Ohio State University Radio Observatory


From Unknown Fri Nov 03 12:24:21 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!EU.net!sun4nl!inter.nl.net!waasdorp
From: Coen Waasdorp <[e-mail]>
Subject: Re: 1/2 wave vertical for 20 mtrs, how to feed?
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In article <[e-mail]>, Frank G3YCC
<yorks@frank> writes
>
>Hi! Another idea is to use a parallel tuned cct, the top of which goes
>to the 33 foot vertical. No earth or radials are needed. Tap up from the
>bottom of the coil for coax feed, the braid goes to the bottom of the
>coil. This can also be used of course to feed a wire antenna, which
>makes a handy portable set up. For low power use, the tuned cct can be
>wound on a ferrite slugged coil about 0.25 inches in diam with say 50 pf
>across the coil. Going back to the QROish vertical, the capacitor needs
>to be high voltage. One idea is to make one out of PCB, using the two
>sides of the board as capacitor plates. If the base was any where near
>the ground, remember the safety aspects, as lethal voltages are present.
>Though not a specific answer to your ideas, I thought I would just add a
>few lines for general interest!
>Very interesting thread!
>73s

Frank,

Tks for your posting. Pardom me to be a bit ignorant, a tuned cct is
that a capacitor in parallel to a coil?

This procedure does look a bit like the posting of Richard Karlquist and
he also mentions being very satisfied with the results.

Next weekend I will start an experiment with the "center fed" vertical
dipole with the coax inside the "bottom" tube.

However till now I have not been able to create a joint which does

a)  properly insulate the top from the bottom tube,
b)  give enough mechanical strenth to withstand force 4 <yes four)
winds, so not to think of any stronger ones,
c)  allows an easy method to assemble and de-assemble the vertical.

Just another question, Frank, would it be possible e.g. the have a 25
feet tube for 15 meter, than a trap, and on top of that a 8 foot tube in
order to create the length for 20 meters.
I would think your tuning method would not work for the 15 and 20 meters
simultaneously, or do you have any other experience?

Tks again,

73
--
Coen Waasdorp
PA0COE


From Unknown Fri Nov 03 12:24:22 1995
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From: [e-mail] (Todd H. Miller)
Newsgroups: rec.radio.amateur.antenna
Subject: U-Bolts for large antenna mounting
Followup-To: rec.radio.amateur.antenna
Date: 1 Nov 1995 20:40:38 GMT
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Lines: 8
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Message-ID: <[e-mail]>
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Anyone know where I can obtain stainless steel hardware for antenna
mounting? Specifically 2 1/2" stainless steel U-bolts of GRADE #5 or
greater.

Thanks;
Todd
WB9PHK
[e-mail]


From Unknown Fri Nov 03 12:24:23 1995
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From: Vance Campbell <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: apartment antennas
Date: 1 Nov 95 21: 8:16 GMT
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I'm ALWAYS interested in new antenna designs... That's why I read this
newsgroup! :-)

10 Bucks sounds like a good price to me.

Vance WA7ROI




From Unknown Fri Nov 03 12:24:24 1995
Newsgroups: rec.radio.amateur.antenna
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From: [e-mail] (Steve Ellington)
Subject: Re: MFJ-1798 10 Band antenna help.
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Lines: 25

Alvin Koffman ([e-mail]) wrote:
: I'm looking for people who own a MFJ-1798 10 band verticle.  I'm thinking of
: geting one and would like to know the falowing:
I don't own one. My dealer told me he quit selling them because there were
so many returns.

: How does it handle wind load?  I'm going to mount it on a heavy pole next to
: my singel story house 15-20 Ft.
Looks to be stronger than the competitors.

: How does it do on 80M ground wave?  What about 6M and 2M?

Very good but who needs 80m ground waves? It would be quite inefficient
o hard  bamd  due its short length


: Is it worth the money?
You will probably never really know until you try it yourself. Just be
sure the dealer will give you a money back guarantee.

: Thanks
: Alvin
: ARS KA9QLQ
--
Steve Ellington [e-mail]  Louisville, Ky


From Unknown Fri Nov 03 12:24:25 1995
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From: psmith <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: GAP antennas?
Date: 2 Nov 1995 04:40:09 GMT
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I've used a GAP Challenger for about 6 months and it has worked very
well for me, especially on 20 meters. My QTH is a house on a small
lot in the middle of a city. All things considered, the GAP has been
entirely satisfactory. BTW, I formerly had a Cushcraft trap vertical
mounted on my roof. The GAP performs at least as well on all bands
and has a much wider bandwidth.




From Unknown Fri Nov 03 12:24:26 1995
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From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help with old rg-8"
Date: 2 Nov 95 06:46:17 GMT
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The mailing list "with" could not be found.
You may use the INDEX command to get a listing
of available mailing lists.


From Unknown Mon Nov 06 21:01:22 1995
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From: [e-mail] (Jeffrey Maass)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 'Birthday Balloon' Antenna ??
Date: 6 Nov 1995 08:06:28 -0500
Organization: The Greater Columbus FreeNet
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X-Newsreader: TIN [version 1.2 PL2]

Steve Ellington ([e-mail]) wrote:
: Keep in mind that when the vertical is longer than 3/4 wave length, it
: becomes a high angle radiator. The balloon vert. could be used for
: 160 and 80 meters on a very calm day. It would take several of them
: to lift your wire though.

Also, in even the sightest breeze, your antenna will be nowhere close to
vertical. It will make a sharp angle to the ground, and will move around
constantly. This means, in part, that your feed impedance will vary.

73,
--
Jeff Maass                     NW of Columbus Ohio      Amateur Radio K8ND
USPSA/IPSC # L-1192   NROI/CRO


From Unknown Mon Nov 06 21:01:23 1995
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From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 1/2 wave vertical for 20 mtrs, how to feed?
Date: Sat, 04 Nov 95 03:52:33 GMT
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   Coen Waasdorp <[e-mail]> wrote:

>Next weekend I will start an experiment with the "center fed" vertical
>dipole with the coax inside the "bottom" tube.

Are you planning to install a balun inside the tube?  If not, I'm
curious what happens to the RF that flows on the outside of the coax,
inside the lower vertical element?

73,

Jack  WB3U


From Unknown Mon Nov 06 21:01:24 1995
Path: news.epix.net!news.sprintlink.net!EU.net!uknet!dispatch.news.demon.net!demon!yorks.demon.co.uk!yorks
From: Frank G3YCC <yorks@frank>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 1/2 wave vertical for 20 mtrs, how to feed?
Date: Fri, 3 Nov 1995 18:34:17 +0000
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 <[e-mail]> <[e-mail]>
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In article <[e-mail]>, Coen Waasdorp
<[e-mail]> writes
>In article <[e-mail]>, Frank G3YCC
><yorks@frank> writes
>>
>>Hi! Another idea is to use a parallel tuned cct, the top of which goes
>>to the 33 foot vertical. No earth or radials are needed. Tap up from the
>>bottom of the coil for coax feed, the braid goes to the bottom of the
>>coil. This can also be used of course to feed a wire antenna, which
>>makes a handy portable set up. For low power use, the tuned cct can be
>>wound on a ferrite slugged coil about 0.25 inches in diam with say 50 pf
>>across the coil. Going back to the QROish vertical, the capacitor needs
>>to be high voltage. One idea is to make one out of PCB, using the two
>>sides of the board as capacitor plates. If the base was any where near
>>the ground, remember the safety aspects, as lethal voltages are present.
>>Though not a specific answer to your ideas, I thought I would just add a
>>few lines for general interest!
>>Very interesting thread!
>>73s
>
>Frank,
>
>Tks for your posting. Pardom me to be a bit ignorant, a tuned cct is
>that a capacitor in parallel to a coil?
>
>This procedure does look a bit like the posting of Richard Karlquist and
>he also mentions being very satisfied with the results.
>
>Next weekend I will start an experiment with the "center fed" vertical
>dipole with the coax inside the "bottom" tube.
>
>However till now I have not been able to create a joint which does
>
>a)  properly insulate the top from the bottom tube,
>b)  give enough mechanical strenth to withstand force 4 <yes four)
>winds, so not to think of any stronger ones,
>c)  allows an easy method to assemble and de-assemble the vertical.
>
>Just another question, Frank, would it be possible e.g. the have a 25
>feet tube for 15 meter, than a trap, and on top of that a 8 foot tube in
>order to create the length for 20 meters.
>I would think your tuning method would not work for the 15 and 20 meters
>simultaneously, or do you have any other experience?
>
>Tks again,
>
>73
Hi, yes a parallel tuned cct is what I mean, i.e a coil with a capacitor
across it. No the idea of a 25 ft tube, trap etc is ng. Don't know why
you mentioned 25 ft? Normally, a quarter wave vert (11 ft for 21 mhz)
has a trap then whatever extra to load it to 14 mhz, but really you are
after a half wave antenna, I think, and if you did use 1/4 wave you
would need radials, which you do not need for a 1/2 wave one. No, the
method I described was for a mono band 1/2 wave. For two band op you
would need two tuned ccts and two verts, I think!! If you wanted to try
a half wave WIRE Antenna, you can have two tuned ccts in one box with
sockets for each, and plug in the appropriate length of wire, i.e 22 ft
for 21 Mhz and 33 ft for 14 (approx).
73
--
Frank G3YCC (G QRP 042)
Email: [e-mail]


From Unknown Mon Nov 06 21:01:25 1995
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From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 1/2 wave vertical for 20 mtrs, how to feed?
Date: 4 Nov 1995 08:37:54 -0500
Organization: America Online, Inc. (1-800-827-6364)
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In article <[e-mail]>,
[e-mail] (WB3U) writes:

>>Next weekend I will start an experiment with the "center fed" vertical
>>dipole with the coax inside the "bottom" tube.
>
>Are you planning to install a balun inside the tube?  If not, I'm
>curious what happens to the RF that flows on the outside of the coax,
>inside the lower vertical element?
>
>
That will work fine if the air gap between the outer element and the coax
outside is maintained. It must be mostly air, so the Vp does not detune
the stub.

73 Tom



From Unknown Mon Nov 06 21:01:26 1995
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From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 160 vertical vs Inverted Vee - What say
Date: 4 Nov 1995 08:37:54 -0500
Organization: America Online, Inc. (1-800-827-6364)
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In article <[e-mail]>, [e-mail] (Bill &
Susan Rindone) writes:

>
>This summer put up 135 foot vertical with one elevated radial. Actually a

>dipole "L". Also a 254 foot director at 75 ft spacing. It lacks
authority.
>Doesn't seem as good as Invee.
>
>Is it:
>
>1. Diff between Jan-Feb prop and NOW?

Could be!

>2. Needs more radials. Can only get two more elevated.

Very likely! That's a terrible configuration. Of course I'm not a big fan
of any small radial system, even when elevated. My direct measurements
here showed four elevated radials were over 3 dB down from 60 radials on
the ground on 80 meters.

>3. Horizontal radiation (Invee) reflection over salt water vs. Vertical?

You have a nice location. It reminds me of W1BB's (sk) location

>4. None of the above?

Perhaps all of the above.

Here in Georgia, my 135 foot vertical is two S units or more better than a
dipole at 130 feet on 160 into Europe. W5NTJ has the same results with a
nearly identical system from Mississippi.

I would try a lot more radials, even lying on the ground and even if short
before giving up on the vertical.

73 Tom W8JI


From Unknown Mon Nov 06 21:01:27 1995
Path: news.epix.net!news.sprintlink.net!psgrain!fizban.solace.mh.se!demos!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 160 vertical vs Inverted Vee - What say
Date: 6 Nov 1995 15:49:33 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 31
Message-ID: <47laqd$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de
Keywords: 160 vert/invee

>Station is located 200 above salt water with sharp slope to water in B.C.
>Canada.
>
>Last year used Inverted Vee at 120 feet.
>This summer put up 135 foot vertical with one elevated radial.

Hi Bill,

Acording to some articles in our Ham-mag based on practical
comparisions as well as simulations a inverted vee 1/4 wl
up will normally beat a vertical quarterwave. *But* the vertical should be
clearly superior, if two conditions are met:

1. Ground conduction is good, i.e. you are at the sea shore.
   so here you are OK.
2. The vertal has a good ground plane. By the looks of it you are on the
   safe side with a very large number of radials lying on the ground,
   which sounds awkward on 160. As to the elevated radials, there is not
   really a lot of evidence that they actually do work better than ground
   mounted ones.

This all referrs to the signal strength, on reception verticals
are reported to have a poor noise performance.

BTW, I am also interested in other's opinions/experience with the question
of a 1/4 wl vertical vs. inverted vee or delta loop with the apex 1/4 wl up.

73, Moritz DL5UH





From Unknown Mon Nov 06 21:01:28 1995
Path: news.epix.net!news.sprintlink.net!EU.net!uknet!dispatch.news.demon.net!demon!yorks.demon.co.uk!yorks
From: Frank G3YCC <yorks@frank>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 2 element HF Beam used as vertical, any good?
Date: Fri, 3 Nov 1995 18:41:50 +0000
Organization: Uk
Lines: 61
Distribution: world
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>
 <[e-mail]> <[e-mail]>
 <[e-mail]> <[e-mail]>
Reply-To: Frank G3YCC <frank@yorks>
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In article <[e-mail]>, Coen Waasdorp
<[e-mail]> writes
>In article <[e-mail]>, WB3U <jackl@pinetr
>ee.microserve.com> writes
>>
>>At the risk of being nit-picked for saying this, I don't think there
>>will be any significant difference in efficiency.  It's the same
>>antenna, only oriented differently.
>
>Jack,
>
>I have, in the mean time, looked up the ARRL antenna handbook as you
>suggested in your previous posting.
>
>Indeed there are, to simplify the matter, two kind of losses, the ground
>return (in case of 1/4 wave verticals) and far field ground losses.
>
>The ground return losses can mostly be solved with a proper radial
>system or 1/2 wave vertical (provided the length can be achieved).
>
>The far field ground losses is another matter, and as such not under
>control. It seems that where I am located, in a "polder" just below sea
>level, the ground conductivity is average to good.
>
>So, the solution is not simple.
>
>Presently I am using a 10-15-20-40 multi band Alpha Delta DX-CC in some
>kind of vertical V config (one leg horizontal and the other sloped under
>an angle of around 60 dgs, due to the physical environment).
>
>This set-up works to my satisfaction in the NE-E-SE quadrants, but to
>the SW-W-NW (central and north America) the performance is less (due to
>build up area).
>
>My idea of the vertical was to have something over the roof tops.
>
>So, on one hand I am still considering the vertical, on the other hand
>perhaps a rota table dipole would be the answer.
>
>Regretfully a bit expense to try all the solutions!! And I am in bit of a
>hurry to be ready for the CQWW CW contest <gr>
>
>Bill, again tks for you info. I have a better understanding of the
>various aspects of ground losses.
>
>73
>
>
A vertical beam will work OK, in the same way as phased vertical do. In
THEORY with there being a difference in polarisation between sigs from a
horiz beam to such a vertical, there will (in theory again!) be losses
or rather less signal to/from it ... that sound odd, but hope you know
what I mean! However, once RF has bounced off the ionosphere and earth a
couple of times, there is no way of knowing what polarisation it is in,
probably all sorts.
Don't seem to have got that very clear, but hope of interest at least!
73s
--
Frank G3YCC (G QRP 042)
Email: [e-mail]


From Unknown Mon Nov 06 21:01:29 1995
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Newsgroups: rec.radio.amateur.antenna
Subject: Re: 2 element HF Beam used as vertical, any good?
Message-ID: <[e-mail]>
From: [e-mail] (Fred McKenzie)
Date: Fri, 03 Nov 1995 19:30:23 -0500
References: <[e-mail]> <[e-mail]>
 <[e-mail]> <[e-mail]> <[e-mail]>
Organization: NASA, Kennedy Space Center, Florida
Nntp-Posting-Host: k4dii.ksc.nasa.gov
Lines: 24

In article <[e-mail]>,
[e-mail] (WB3U) wrote:
> At the risk of being nit-picked for saying this, I don't think there
> will be any significant difference in efficiency.  It's the same
> antenna, only oriented differently.

Jack-

Are we talking only the difference between horizontal and vertical?  I
understand that additional losses are introduced in vertically polarized
signals, due to the relatively poor conductivity of the earth.  As a
signal travels along the surface of the earth, it tends to "tilt", as a
new component is introduced in the earth, along the direction of travel.
As a result, the signal is attenuated.  I would expect that there would be
no further such attenuation as the signal goes beyond the horizon, and
approaches the ionosphere.  It would be most applicable to "ground wave"
signals.

If we are talking about the difference between a vertical ground plane and
a vertical dipole, there may be more influence of the earth on a low
dipole's pattern, but I expect it will still have a lower radiation angle,
and will maintain a slight advantage over a ground plane.

73, Fred, K4DII


From Unknown Mon Nov 06 21:01:30 1995
Path: news.epix.net!news.sprintlink.net!news.eznet.net!usenet
From: [e-mail] (John R. Cunliffe)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 70cm-HB9CV Dimensions wanted
Date: Sun, 05 Nov 1995 02:26:44 GMT
Organization: E-Znet Inc. Rochester N.Y. 14623 (716)-262-2485
Lines: 16
Message-ID: <47h7pp$[e-mail]>
References: <47cun4$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: dialin-5.eznet.net
X-Newsreader: Forte Free Agent 1.0.82

Wolf Guenter <i243> wrote:

>Hi there,

>I want to build a HB9CV-antenna for the 70cm-band. I would be happy, if anybody
>could post me the dimensions of such an antenna.

>Thanks, Guenter (DG9NEQ)

schau mal in den Rothhammel rein die abmessungen sind dort..Du kannst
bestimmt eines im lokal OV leihen.
   John R. Cunliffe   N2NEP
   [e-mail]
   fax# [phone]
   http://home.eznet.net/~cunliffe/



From Unknown Mon Nov 06 21:01:31 1995
Path: news.epix.net!news.sprintlink.net!dnaco.net!root
From: [e-mail] (Johnny Miller)
Newsgroups: rec.radio.amateur.antenna
Subject: Antenna for Rs-15
Date: Mon, 06 Nov 1995 06:01:11 GMT
Organization: The Dayton Network Access Company (DNACo)
Lines: 12
Message-ID: <47k8b2$[e-mail]>
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Any one got any good ideas on good antenna to work rs-15
TIA


Mr. Satellite
RS-10/11/RS-15
N8RTW
Johnny Miller
[e-mail]
Middletown, Ohio area 442.425(+)B.A.E.R.S Machine
Dayton, Ohio area 145.490(-) = Drake Machine



From Unknown Mon Nov 06 21:01:32 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!sparky!nlcnews.nlc.state.ne.us!usenet
From: [e-mail] (Gary McDuffie, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Antenna modeling software <Q>?
Date: Sat, 04 Nov 1995 21:52:23 GMT
Organization: AG0N's Radio Ranch
Lines: 17
Message-ID: <47gn6s$[e-mail]>
NNTP-Posting-Host: 198.206.239.245
X-Newsreader: Forte Agent .99b.112

I've seen many different modeling software packages being offered from time to
time.  However, despite my job title, I'm not a true engineer and always feel
I would not have enough understanding of the subject to be able to properly
use such a program.

Is there something that is "easy" to use?  Is it commercial, share/freeware?
Please post urs/address if available via inet.  I'm interested in being able
to play with wire antenna designs for the hf bands.

From one who can only read a smith chart if it is at Dr. Smith's eye clinic!
:)
 _____                       _____ _____ ___ _____
|   __|___ ___ _ _    ___   |  _  |   __|   |   | |
|  |  | .'|  _| | |  |___|  |     |  |  | | | | | |
|_____|__,|_| |_  |         |__|__|_____|___|_|___|
              |___| [e-mail]



From Unknown Mon Nov 06 21:01:33 1995
Path: news.epix.net!news.sprintlink.net!castle.nando.net!news
From: [e-mail] (Doug Hall)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Butternut HF2V 40M/80M ant.
Date: Sat, 04 Nov 1995 03:07:19 GMT
Organization: JPS Communications, Inc.
Lines: 36
Message-ID: <47ehpo$[e-mail]>
References: <47e2bi$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: vyger1207.nando.net
X-Newsreader: Forte Agent .99a.107

[e-mail] (David E. Shelton) wrote:

>Hello,
>I have been looking for another antenna that will allow me to work 40M and 80M
>in my limited space area that I currently have now. I currently run a
>Cushcraft R7 and I am somewhat happy with its performance. I am currently
>however, thinking of buying 50ft push poles and erecting a shortened version
>of the Carolina Windom from the push poles. Any help would be greatly
>appreciated. TNX.
>
>73, David KE4FPS

David,

During a RTTY contest last year I had the chance to use an R7 here. It
was mounted on a 20 ft. mast. I also had a ground mounted Butternut
HF2V with 30 radials.  On 40m (the only band the two antennas have in
common) the Butternut *always* outperformed the R7.  Even when signals
were equal, the Butternut was so much quieter that copy was better
than with the R7. I'm not sure if there was something wrong with the
R7 or not - it presented a pretty good match on all bands except 17m,
which we weren't using for the contest anyway.

For 80m operation the Butternut is OK. I've worked all continents with
it, but it's so short for 80m that the efficiency is pretty low. You
don't get much bandwidth with it either. If you want to work CW and
phone on 80m you'll find yourself running outside a lot to tune it. I
get about 40 kHz between the 2:1 VSWR points. Still, it's not a bad
way to go if you need a 40/80m antenna and don't have a lot of room.

Just my 2 cents worth...

73,
Doug, KF4KL




From Unknown Mon Nov 06 21:01:34 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!news.eas.asu.edu!ukma!hermes.louisville.edu!homer.louisville.edu!deshel01
From: [e-mail] (David E. Shelton)
Newsgroups: rec.radio.amateur.antenna
Subject: Butternut HF9V-X and HF6V-X
Date: 5 Nov 1995 15:37:03 GMT
Organization: University of Louisville, Louisville KY USA
Lines: 15
Message-ID: <47ilmv$[e-mail]>
NNTP-Posting-Host: homer.louisville.edu
X-Newsreader: TIN [version 1.2 PL2]

Hello,

Does anyone out there currently use either of these antennas, and if you do
how the performance on the 15M, 40M, and 80M bands? If you do use either of
these antennas, do you use the counterpoise kit to make it radial free and how
does that effect the performance? I currently run a R7 from Cushcraft and I
need something to get me onto 80 and something that would work better on 40M.
I understand that the radial systems that are required with these antennas are
often difficulty to work with and if they are not configured just right the
antenna's performance and SWR are greatly affected. I would appreciate any
input from current users out through. TNX.

73, David KE4FPS
[e-mail]



From Unknown Mon Nov 06 21:01:35 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: coax impedance
Date: 6 Nov 1995 00:47:14 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 1
Message-ID: <47k7h2$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]




From Unknown Mon Nov 06 21:01:36 1995
Path: news.epix.net!news.sprintlink.net!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: coax impedance
Date: 6 Nov 1995 00:53:03 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 22
Message-ID: <47k7rv$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]




can anyone tell me the impedance of Beldon 8242 RG-9/u and Beldon 8237
RG-8/u?
:












P
\
/
:


From Unknown Mon Nov 06 21:01:37 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!usc!sdd.hp.com!hpscit.sc.hp.com!rkarlqu
From: [e-mail] (Richard Karlquist)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Compressed Video Transmission
Date: 6 Nov 1995 02:42:16 GMT
Organization: Hewlett-Packard
Lines: 46
Message-ID: <47jsm8$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: hpscrj.scd.hp.com

In article <[e-mail]>, Bob Tournoux <[e-mail]> wrote:
>Hello out there! I'm an active ATV'r that has finally cracked the
>challenge of deed restrictions through use of a telescoping mast that
>allows me to put up an antenna when I want and take it down when
>through. That was an easy one, but now the bandspace problems are
>only starting to show up. There's even fighting brewing between
>narrow band FM and ATV operators (the MACC meetings of the last two
>years in the midwest)
>
>Now, being a true ham, seems like there is some real opportunity here
>to investigate a mode of operation that uses compressed video, i.e.,
>a chance to introduce a more efficient mode of transmission. I sent
>e-mail to the ARRL but they hadn't seen any info about this, but
>thought it would be feasible. I'd certainly like to save at least
>part of the 400mhz band for atv - after all cable ready tv's that
>recv channels 57 - 61 make great ham atv receivers. Anyway, there
>must be more than just me out there who'd like to get into this kind
>of a project. Let me know what you think. If you think I'm full of
>it, tell me why you think this won't work. Somewhere I read that it
>might be possible to send real time video on a 64khz channel (using
>some of the newer video compression techniques).
>
>I think we could reduce the bandwidth required for ATV so that we
>could accomodate everyone. Rather than fighting, I think this is a
>chance to really get involved in the spirit of amateur radio. I hope
>some of you out there agree!
>
>73
>
>KF8QU

I am also interested in this topic.  What would be really nice
would be to be able to use off the shelf MPEG-1 and/or MPEG-2
decoders.  Also, I have heard that a number of companies are
about to release MPEG ENcoder chip sets at affordable prices
(under $100).  Presently, a lot of MPEG-1 and 2 encoding is
happening with boxes costing from $10,000 to $100,000.  You
can save a lot of money if you don't have to compress in real
time, so this is another possibility.

I think we would have to use a known standard like MPEG to get
FCC buyin.  They need to be able to monitor transmissions.

Rick Karlquist
[e-mail]



From Unknown Mon Nov 06 21:01:38 1995
Path: news.epix.net!news.sprintlink.net!news.voicenet.com!netnews.upenn.edu!dsinc!ub!news.kei.com!newsfeed.internetmci.com!in2.uu.net!solaris.cc.vt.edu!usenet
From: [e-mail] (Michael Barts)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Compressed Video Transmission
Date: Fri, 03 Nov 1995 23:12:44 GMT
Organization: Virginia Tech, Blacksburg, Virginia
Lines: 50
Message-ID: <47dm2b$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: mbarts.bevb.blacksburg.va.us
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Bob Tournoux) wrote:
> I'd certainly like to save at least
>part of the 400mhz band for atv - after all cable ready tv's that
>recv channels 57 - 61 make great ham atv receivers.
If you're wanting to do compressed video, you're talking about a
digital mode. So what difference does it make if you have a video
receiver that tunes your frequency of operation?  Given the bandwidth
requirements, band crowding, etc, why not consider 902 or 1296 for
this?

> Somewhere I read that it
>might be possible to send real time video on a 64khz channel (using
>some of the newer video compression techniques).
I believe that you are refering to some of the newer video
conferencing compressed video. This is not full screen but one of
those little video windows on the screen, i.e. low resolution. Also,
the demos I've seen were a little jerky, indicating full motion is
marginal.

The current standard for full screen, full motion, video is MPEG-1 and
MPEG-2 encoding.  At the highest compression rate, standard NTSC video
can be sent at about 3 Mbps.  Problems: 1) real time encoders are very
expensive ($12k was last price I saw, its dropping but will be a few
years before you can afford to buy one on a plug in card on a PC),  2)
would it be legal to send under current FCC rules?  Number 1 can be
overcome if you don't want to send realtime video.

 Another problem is finding the RF decks to do these kinds of data
rates. Its available commercially, but not at amteur prices. Anybody
working this problem?

Not trying to rain on your parade, Bob, but I've given this some
thoughts over the last few years.  I used to design video transmitters
and receivers for fiber optic applications and kept an eye on
compressed video technology as "the next thing" for our products.  Our
market was almost consumer grade so price was all important.  Digital
video is still a little too pricey right now, but not in a couple of
years (or less as the price of the silicon drops).  Once the digital
technology is available at price, the RF hardware is the next hurdle.

One last item, lets take this topic over to the homebrew or digital
newsgroups where its more appropriate than here.

Mike
KB4NT
[e-mail]

Michael Barts
[e-mail]                           Amateur Radio: KB4NT



From Unknown Mon Nov 06 21:01:39 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!winternet.com!news.interlog.com!io.org!van-bc!fonorola!Rezonet.net!news.pubnix.net!mba!juxta!michael.black
From: [e-mail] (Michael Black)
Date: 06 Nov 95 11:42:18
Newsgroups: rec.radio.amateur.antenna
Subject:  Re: Compressed Video Transmission
Message-ID: <[e-mail]>
Organization: MtlNet (MBA.org) Juxtaposition BBS. [phone]
Lines: 38

Bob Tournoux <[e-mail]> is curious about a narrower
bandwidth tv signal so ATV can still fit in the 430 MHz
band.

First of all, wouldn't this thread fit better in
rec.radio.amateur.homebrew?

Second, I haven't seen anything about compression for
ATV, but I know that years ago there was an article
in 73 suggesting a narrow band tv signal.  It was
a reduced scan rate, I believe.  It was sort of in
between the bandwidth of the usual tv signal and SSTV.
The idea came up in the early sixties, with the intent
that if implemented, it could put a tv signal into the
top two MHz of 2 meters.  That was way back when
most of 2 meters was fairly empty.

Since this was brought up in the days before cheap
digital IC's, it was a scheme that could be readily
implemented.  If only I could remember the issue.

Years later, I recall seeing yet another article about
a similar scheme.  I'm more vague about this, so I can't
remember whether it was an extension of the first proposal,
or another scheme.  I do recall the details were more specific,
and it did show using TTL to reduce the scan rate.  I think
that article was also in 73, probably in the late 70's or
early 80's, but I'm not absolutely sure.

My collection is just not organized enough to be able to put
my hands on the articles easily.  But a scan of the annual
indexes should turn up the articles.  Perhaps it is worth
taking a look at the idea at this point.

    Michael  VE2BVW
--
| Return Address:      [e-mail]
| Standard disclaimer: The views of this user are strictly their own.


From Unknown Mon Nov 06 21:01:40 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!news.consultix.com!news.kei.com!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Will Roberts)
Newsgroups: rec.radio.amateur.antenna
Subject: EWE receiving antennas
Date: 4 Nov 1995 18:32:40 GMT
Organization: Netcom
Lines: 6
Message-ID: <47gbk8$[e-mail]>
NNTP-Posting-Host: ix-rtp5-09.ix.netcom.com
X-NETCOM-Date: Sat Nov 04 10:32:40 AM PST 1995

Has anyone had success with this new very short type of lowband
receiving antennas. They are detailed in February 1995 QST, but I have
some questions for anyone who has had good luck with one (or more) on
80 and 160...

73 - Will AA4NC


From Unknown Mon Nov 06 21:01:41 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: EWE receiving antennas
Date: 5 Nov 1995 10:59:34 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 34
Sender: [e-mail]
Message-ID: <47in16$[e-mail]>
References: <47gbk8$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47gbk8$[e-mail]>, [e-mail] (Will
Roberts) writes:

>
>Has anyone had success with this new very short type of lowband
>receiving antennas. They are detailed in February 1995 QST, but I have
>some questions for anyone who has had good luck with one (or more) on
>80 and 160...
>
>73 - Will AA4NC
>
>
Hi Will,

I tried one here (near Atlanta) to see if it had potential in my phased
receiving arrays. The experiment was sucessful only after I added a ground
system around and under the EWE. Without the ground system, I couldn't
properly decouple the feedline from the antenna. So the feedline acted
like a long wire antenna coupled to the EWE.

In Ohio I was sucessful with short vertical E field probes in an array,
but the same array wouldn't work at all here (poor soil) for the very same
reasons the EWE doesn't.

I presently use closed loops in phased arrays for receiving. The EWE only
worked with a large ground screen, and I don't want to go through all that
bother in a multi-element array. Although with the ground screen it did
appear to have some potential. It seemed to be a little better than a
regular small loop, but not as good as two small phased loops.

Have you (or others) tried an EWE, and what have you found?

73,
Tom W8JI


From Unknown Mon Nov 06 21:01:42 1995
Path: news.epix.net!news.sprintlink.net!news.onramp.net!news.tcst.com!op.net!agis!usenet.eel.ufl.edu!brutus.bright.net!chi-news.cic.net!uwm.edu!fnnews.fnal.gov!gw1.att.com!cmprime.cis.att.com!anchor.cis.att.com!newsadm
From: [e-mail] (USENet News System Manager)
Newsgroups: rec.radio.amateur.antenna
Subject: Folded dipole-multiband
Date: 6 Nov 1995 12:50:54 GMT
Organization: AT&T Lincroft, NJ
Lines: 29
Message-ID: <47l0be$[e-mail]>
NNTP-Posting-Host: anchor.cis.att.com
X-Newsreader: TIN [version 1.2 PL2]

I was having a problem feeding my 80 m. half wave dipole with balanced
450 ohm line.  I use a homebrew tuner - the balanced, link coupled
type.  On 40 m all worked well but on 80 the tuning was erratic.
I had to reset taps on the coil as I QSY'd within the band.  Tuning
was extremely sharp.  All in all, I wasn't happy with it.
I think the problem had to do with the length of feedline (somewhere
around 80-100 feet) causing an impedance at the tuner that was
probably low, and I really needed to change to series feed (where
you put a pair of capacitors in series with the feedline rather than
trying to tap the feedline right on the tuned circuit).

So I decided to try a folded dipole for 80.  THis, I figured, would give
me a nearly constant impedance at the tuner, across the band (i.e. the
line is closely matched, the swr is low ).  So I attached
120 ft of balanced line to the dipole, using the dipole as a sort of
support for the bal. line, and wow! is it ever great.  Now I just
QSY, notice that the swr is a little high, retouch one control on the
tuner and back to 1:1 we are.

If this thing can stay up through the winter, with the extra windload,
we'll be all set.

Now as the Subject line says, multiband.
What opinions would you guys have regarding using this thing as I did
the dipole on multiple bands?  How DOES a folded dipole tune on
harmonics of the fundamental band?

Rick    KT2Q



From Unknown Mon Nov 06 21:01:43 1995
Path: news.epix.net!news.sprintlink.net!news.wwwi.com!nntpdist.primenet.com!ctrask
From: [e-mail] (Christopher Trask)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Folded dipole-multiband
Date: 6 Nov 1995 18:51:44 GMT
Organization: Primenet [phone]
Lines: 27
Message-ID: <47llg1$[e-mail]>
References: <47l0be$[e-mail]>
NNTP-Posting-Host: usr5.primenet.com
NNTP-Posting-User: ctrask
X-Newsreader: TIN [version 1.2 PL2]

USENet News System Manager ([e-mail]) wrote:

: Now as the Subject line says, multiband.
: What opinions would you guys have regarding using this thing as I did
: the dipole on multiple bands?  How DOES a folded dipole tune on
: harmonics of the fundamental band?

: Rick    KT2Q

Hmmmmmm...
        This is just a SWAG (Scientific Wild-Assed Guess) that I'll put
up for further discussion, but I would think that it would be possible to
place a series-tuned trap across the arms at appropriate distances so as
to make the antenna look like a bonified folded dipole at various other
frequencies, not necessarily harmonics.
        Anyone ever tried this?  Just curious.

                                          Regards,

                                          Chris

------------------------------------------------------------------------------
Chris Trask / N7ZWY                       Circuit Design for the RF Impaired
ATG Design Services                       __  __     ____  ___       ___ ____
[e-mail]       _~_            /__)/__) / / / / /_  /\  / /_    /
                         (@ @)          /   / \  / / / / /__ /  \/ /___  /
----------------------ooO~(_)~Ooo---------------------------------------------


From Unknown Mon Nov 06 21:01:44 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 4 Nov 1995 08:37:52 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 28
Sender: [e-mail]
Message-ID: <47fqbg$[e-mail]>
References: <47c4sh$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47c4sh$[e-mail]>, [e-mail]
(Clark Savage Turner) writes:

>Heck, if you are going to run ladder line down, or even a short piece of
>coax at the end of some twin lead or ladder line, forget the silly
>G5RV dimensions, and just put up a dipole of the longest dimensions
>you can given the space you have.  I bet it will be a winner.
>
>Clark

Clark,

I'm not positive that is good advice. The G5RV dimensions do result in a
low SWR at the resonant frequency on 80, 40, and 20 meters. The only bands
particulary nasty are 15 and 10 meters.

While I generally use open wire line here, if I select the wrong combo of
open wire and flat top, it really messes up the lower bands. Combo's that
very often won't work well are 1/2 wave antennas on the lowest band fed
with 1/4 wave (or multiples) of feedline on the same band. For example, a
80 meter dipole fed with a 60 foot 450 ohm line has extremely high
feedpoint impedances on both 80 and 40 meters. If fed with a 1/2 wave line
on 80, the 80 meter impedance is low but 40 is still "nasty".

That's something else to consider!

73
Tom


From Unknown Mon Nov 06 21:01:46 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: GAP antennas?
Date: 4 Nov 1995 08:37:54 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 54
Sender: [e-mail]
Message-ID: <47fqbi$[e-mail]>
References: <47bhb6$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

>>>Such a statement should be treated in the same way as the manufacturers
claim that it is the best vertical aerial possible. Unless taken in
context, they are both meaningless.

I am considering a GAP as well, so am interested in realistic
comparisons to other antenna systems. Compared to his full size 3 element
beam at 120 feet, perhaps Carl was disappointed with the GAP. Compared
to 12 feet of wire pinned to my shack ceiling, will I be equally
disappointed? With no prospect of anything horizontal or ground mounted
(so
radial are out), a vertical up high on my house is the only alternative to
indoor aerials.

If anyone has any useful (i.e. qualified) experience, speak up....

David<<<

Hi David,

That's a good point! I've worked VK's that were mobile on 160 meters, and
I've worked Europe from my 160 mobile. I know my antenna is a fraction of
a percent efficient on 160, and I'm sure their antennas were not super
efficient! So who you've worked is a *next to valueless opinion*, as are
"strongest signal on the band" reports. I even receive them on occasion
from my mobile!

Let me expand on my comments. During many A/B tests, the GAP I have is
always several S units down from conventional dipoles at fairly high and
clear heights. It was substantially down from a MFJ three band vertical
(with 60 radials) on 80, 40, and 20. And my ground mounted Butternut
(around 100 radials) just slays it on all bands! I plan on using the
tubing from it to build another duplicate of the MFJ antenna, so I can
phase two elements on 80 and 40. Especially since the 35 foot MFJ *TIES*
my dipole (it is at 130 feet!) into Europe on 80!!!!

My GAP is consistantly weaker than a small 3 foot diameter transmitting
loop at 50 feet on 20 and 15 meters.

QST also tested a GAP (I'm not sure which one) this past year, and found a
ground mounted vertical with traps beat it consistantly on the lower
bands. It was also beat by low dipoles. You should read that article
directly, rather than following my rewording of it.

ALL ground independent verticals will not work as well a the same overall
length vertical worked against a reasonable ground system, that's simple
science. But I think what kills the GAP is the folded up loading in the
element. Traps or air insulated decoupling stubs would be much better.

Sales gimmicks or popular folklore take priority over good design (ie.
conventional L/C traps are lossy). After all, if you can market it you
won't sell it...even if it does work better!

73,
Tom


From Unknown Mon Nov 06 21:01:47 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.probe.net!usenet
From: [e-mail] (Dale Botkin)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: GAP antennas?
Date: Sat, 04 Nov 1995 20:38:51 GMT
Organization: This is only a test.
Lines: 29
Message-ID: <47gfe8$[e-mail]>
References: <[e-mail]> <478o6l$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: dialup5.probe.net
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (The2X4) allegedly wrote:

>In article <[e-mail]>,
>[e-mail] (Stanley W. Henson) writes:

>>Any experience stories??
>>
>>Thanks,
>>Stan
>>KB9UM

>Hi

>Had one. BBBiiiiiigggggg external dummy load.

>Carl

Got one.  Not a beam, but I do work QRP with it - NE to CA on under
half a Watt, I'd say it works much better than a dummy load.

If you get one, though, IGNORE Gap's directions for planting it if you
live where there is a lot of wind.  Plant that sucker in concrete and
guy it a foot or two above the center feed, with no slack in the guy
ropes.  Trust me, it's not a pretty sight to see your GAP laying on
the ground with that ugly busted end sticking up.

Dale




From Unknown Mon Nov 06 21:01:48 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail] (Hussain Dashti)
Newsgroups: rec.radio.amateur.antenna
Subject: ham-ant
Date: 5 Nov 95 21:51:27 GMT
Organization: MOC/KEMS
Lines: 3
Message-ID: <9511060347.AA18663@ncc>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

ham-ant




From Unknown Mon Nov 06 21:01:48 1995
Path: news.epix.net!news.sprintlink.net!malgudi.oar.net!caen!newsxfer.itd.umich.edu!chi-news.cic.net!usc!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (PeterJS)
Newsgroups: rec.radio.amateur.antenna
Subject: Help: Gotcha's on roof top towers?
Date: 5 Nov 1995 23:20:25 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 20
Sender: [e-mail]
Message-ID: <47k2e9$[e-mail]>
Reply-To: [e-mail] (PeterJS)
NNTP-Posting-Host: newsbf02.mail.aol.com

I'm thinking of taking the plunge and buying a beam.  I'm not inclined to
go through the hassle of putting up a free standing tower (and then
dealing with the likely ruckus from the neighbors in my hedged-in
California neighborhood!) but am considering instead putting a small 5
foot tower on my 1 story house.  For those that have done this before or
considered it:

 - Assuming that I securely attach the base of the tower into the 2x4's
   of the roof (versus simply the roof covering) and not exceed the
    tower's recommended weight and square footage with the beam
   (probably: Hygain TH3Mk4 -3 element-10,15,20m), are there any other
   things that I need to watch out for?

 - Also, if the beam ends up to only 20 feet off the ground, is it really
    worth the money for the quality of the signals that I will receive
    and transmit from that height?

Any other tips to a first time beam buyer would be appreciated.

Thanks ... Peter, KE6VMJ


From Unknown Mon Nov 06 21:01:49 1995
Path: news.epix.net!news.sprintlink.net!news.cici.com!news
From: [e-mail] (Peter D.Richeson)
Newsgroups: rec.radio.amateur.antenna
Subject: hf quad ant. mounting the spreaders?
Date: 5 Nov 1995 22:16:39 GMT
Organization: Starbase1
Lines: 12
Message-ID: <47jd47$[e-mail]>
NNTP-Posting-Host: starbase1.cici.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

I am trying to build a 10,50,20 Meter quad.  What I can't figure out is
how to attach the spreaders to the mast.  I was going to bolt 2 pices
of angle stock to the mast in an X configuration then ubolt the
fiberglass spreaders to the angle stock.  but this has two bad points,
1 it puts a lot of presser on the fiberglass at the point where the
plate of the ubolt presses on the fiberglass and 2 the flat plate of
the ubolt tends to bend over time.

Has any one out there build on of these?  if so how did you do it?

Peter/KA5COI



From Unknown Mon Nov 06 21:01:50 1995
Path: news.epix.net!news.sprintlink.net!news.azstarnet.com!usenet
From: Wes Stewart <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: hf quad ant. mounting the spreaders?
Date: 6 Nov 1995 00:43:05 GMT
Organization: Arizona Daily Star - AZSTARNET
Lines: 22
Message-ID: <47jlmp$[e-mail]>
References: <47jd47$[e-mail]>
NNTP-Posting-Host: usr1ip47.azstarnet.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
To: [e-mail]

[e-mail] (Peter D.Richeson) wrote:
>I am trying to build a 10,50,20 Meter quad.  What I can't figure out is
>how to attach the spreaders to the mast.  I was going to bolt 2 pices
>of angle stock to the mast in an X configuration then ubolt the
>fiberglass spreaders to the angle stock.  but this has two bad points,
>1 it puts a lot of presser on the fiberglass at the point where the
>plate of the ubolt presses on the fiberglass and 2 the flat plate of
>the ubolt tends to bend over time.
>
>Has any one out there build on of these?  if so how did you do it?



I have never built one of these, however, I have seen stainless steel
hose clamps used for this purpose.  They have advantage of conforming
to the radius of the fiberglass spreader and distributing the loading
accordingly. (If the width of the angle is properly sized)

HTH

73, Wes -- N7WS



From Unknown Mon Nov 06 21:01:51 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!btnet!dispatch.news.demon.net!demon!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Hot balun problem
Date: Sat, 04 Nov 95 11:53:31 GMT
Lines: 22
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4

[e-mail] (Bill Turner) wrote:

>The SWR is about 1.2:1 and the balun is a Radio Works B1-5K which
>is rated at 5KW supposedly, but obviously not cutting the mustard
>in this case.
>
>Hope this helps someone sometime.

Bill,

It would really be a big help to know whether the balun is defective,
or just a poor design.  I've been tempted to buy one model or another
of Radio Works baluns in the past, so this could save some grief down
the road.

What are the chances you could send it back to T.R.W. and let them
take a look at it?  Then you could share the results with the group. :)

73,

Jack  WB3U


From Unknown Mon Nov 06 21:01:53 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Hot balun problem
Date: 4 Nov 1995 22:11:06 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 42
Sender: [e-mail]
Message-ID: <47ha0a$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <[e-mail]>, [e-mail] (Bill Turner) writes:

>The 9913 coax connecting to the RG58 stayed stone cold.  I suppose I
could
>make the balun from 9913, but the tree branch supporting this is under a
fair
>
>amount of strain already, so I elected to go with a few watts loss in the
>RG58
>rather than lose the branch.
>
>The vee is nothing special, the apex being at 50 feet and the included
angle
>pretty close to 90 degrees.  The SWR is about 1.2:1 and the balun is a
Radio
>Works B1-5K which is rated at 5KW supposedly, but obviously not cutting
the
>mustard in this case.
>
>Hope this helps someone sometime.
>
>
>73, Bill W7LZP
>[e-mail]

Hi Bill,

You have just pointed out my biggest complaint with ferrite sleeve baluns.
Very often the core material is selected to give a very high impedance
with no regard to Q. Most of the materials suggested behave like resistors
at the design frequency. That's OK, as long as the choking mode voltage is
low enough to keep the dissipation low.
But in some cases, even with a low Z feedpoint, quite a bit of voltage can
appear across the balun. When this happens, the cores can become so warm
they reach the curie temperature and the permeability "falls out".

That's why I always use air core chokes, except for receiving or where I
want to dissipate the parallel line energy!

Anyway, brilliant detective work! Sherlock 'Ohms would be proud!

73 Tom


From Unknown Mon Nov 06 21:01:54 1995
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!newsserver.jvnc.net!newsserver2.jvnc.net!news.cac.psu.edu!news.math.psu.edu!chi-news.cic.net!newsspool.doit.wisc.edu!night.primate.wisc.edu!nntp.msstate.edu!cssun.mathcs.emory.edu!emory!hubcap.clemson.edu!info.uah.edu!news.msfc.nasa.gov!bcm.tmc.edu!news.tamu.edu!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How  Well Does R7 Work on 40M?
Date: 4 Nov 1995 04:00:43 GMT
Organization: Texas A&M University, College Station, TX
Lines: 30
Message-ID: <47eohb$[e-mail]>
References: <[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: 128.194.44.211
X-Newsreader: IBM NewsReader/2 v1.2

In <[e-mail]>, [e-mail] (Jerry Gardner) writes:
>
>I have a Cushcraft R5 vertical and I'm thinking of upgrading to an R7.
>
>For those of you who have R7's: how does it work on 40M? I'm primarily
>interested in DX. My current 40M antenna is a dipole up 20 feet.
>
>
>
>--
>Jerry Gardner          | Maintainer of the Large Format Digest
>[e-mail]    | Send subscription requests to [e-mail]

The R7 vertical and 100 watts at HS0ZAA was successfully used to prove up
gray line path between W5WQN and HS0ZAA for five days out of seven straight
at coincident sunrise/sunset times between us.  HS0ZAA's 40 meter signals
peaked at well over S7 meter on my FT1000 against my 4 element phased
vertical array during the tests.

On 40 meters against the 20 foot hight dipole, my bet is that you will be
so shocked at the improvement in *DX* signals, you won't believe what
you are hearing.

For all practical purposes your 20 foot high dipole is worthless for DX of
any longer path.  Now up at 85 feet up, that dipole is a far different story.

Enjoy - You will!

Mike @ W5WQN as guest at leviathan.tamu.edu



From Unknown Mon Nov 06 21:01:55 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Bill J. Moulton )
Newsgroups: rec.radio.amateur.antenna
Subject: Looking for thin 50 Ohm coax
Date: 4 Nov 1995 06:15:42 GMT
Organization: Netcom
Lines: 6
Message-ID: <47f0ee$[e-mail]>
NNTP-Posting-Host: ix-la22-12.ix.netcom.com
X-NETCOM-Date: Fri Nov 03 10:15:42 PM PST 1995

Does anyone know of any 50 Ohm coax that is thin, like half the size of
RG 58 or less that is low loss. I would like to use it at 440 Mhz. and
900 Mhz. If there is such a thing where can I get some ?

                                            Thanks
                                            WA6PMW


From Unknown Mon Nov 06 21:01:56 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.inc.net!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!ix.netcom.com!netcom.com!wa2ise
From: [e-mail] (Robert Casey)
Subject: Re: Looking for thin 50 Ohm coax
Message-ID: <[e-mail]>
Organization: Netcom Online Communications Services (408-241-9760 login: guest)
References: <47f0ee$[e-mail]> <47g1vs$[e-mail]>
Date: Sat, 4 Nov 1995 22:03:07 GMT
Lines: 17
Sender: [e-mail]

>In article <47f0ee$[e-mail]>, [e-mail]
>says...
>>
>>Does anyone know of any 50 Ohm coax that is thin, like half the size of
>>RG 58 or less that is low loss. I would like to use it at 440 Mhz. and
>>900 Mhz. If there is such a thing where can I get some ?
>>
You're running into a fundemental conflict here.  To make coax 50 ohms,
requires a certian ratio of outside diameter of inner conductor to
inside diameter of the shield.  Losses are pretty much ruled by the
resistance of the center conductor (the dielectric doesn't loose much
in comparison here).  And the skin effect really gets you on higher
frequencies (only a skin of the inner conductor conducts anymore,
so the resistance gets higher).  The only real way to cut this loss
down is to use a thicker center conductor, which in turn makes for
thicker coax (because of the above mentioned ratio).  Silver plating
helps but not that much.


From Unknown Mon Nov 06 21:01:56 1995
Path: news.epix.net!news.sprintlink.net!news.inc.net!uwm.edu!chi-news.cic.net!newsfeed.internetmci.com!tir.com!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Looking for thin 50 Ohm coax
Date: 4 Nov 1995 23:56:20 GMT
Organization: The Internet Ramp
Lines: 9
Message-ID: <47guj4$[e-mail]>
References: <47f0ee$[e-mail]>
NNTP-Posting-Host: an40.tir.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

  Beldon #8216 coax or RG-174/U is 50 ohms and about 1/8 diameter
even though I wouldn't consider it low loss it is a good coax for short
hook ups...
 The connectors I use are Cambridge Products Corp. CPM 8819

Both items should be available at electronics wholesalers.

Bernie AA8RA



From Unknown Mon Nov 06 21:01:57 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!blackbush.xlink.net!news.ppp.net!news.Hanse.DE!mwhh!dk3uz!ehramm
From: [e-mail] (Edmund H. Ramm)
Subject: Re: Looking for thin 50 Ohm coax
X-Newsreader: nn 6.4.18
Reply-To: [e-mail]
Organization: Private Linux/68k site
Message-ID: <[e-mail]>
References: <47f0ee$[e-mail]>
Date: Sat, 4 Nov 1995 22:05:38 GMT
Lines: 17

[e-mail] (Bill J. Moulton ) writes:

>Does anyone know of any 50 Ohm coax that is thin, like half the size of
>RG 58 or less that is low loss. I would like to use it at 440 Mhz. and
>900 Mhz. If there is such a thing where can I get some ?

   At the same place where they sell water which already boils at 90 F. At
the frequencies you mention, even RG58 is only usable for very short runs
e.g. inside equipment. RG174 is of lower diameter (1/8"), but I wouldn't
dare using it above 148MHz. Still, for low power applications you might use
it in lieu of dummy loads.  :-)

   73, Eddi
--
   [e-mail] - [e-mail] - DK3UZ@DB0HHT.#HH.GER.EU
               Linux/m68k, the best U**x ever to hit an Atari!
    Distribution of this message via the Microsoft Network is prohibited


From Unknown Mon Nov 06 21:01:58 1995
Path: news.epix.net!news.sprintlink.net!oronet!news
From: [e-mail] (Jim Weir)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Looking for thin 50 Ohm coax
Date: Sun, 05 Nov 1995 17:40:09 GMT
Organization: RST Engineering
Lines: 28
Message-ID: <47isvh$[e-mail]>
References: <47f0ee$[e-mail]>
NNTP-Posting-Host: rst-engr.oro.net
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Bill J. Moulton ) wrote:

>Does anyone know of any 50 Ohm coax that is thin, like half the size of
>RG 58 or less that is low loss. I would like to use it at 440 Mhz. and
>900 Mhz. If there is such a thing where can I get some ?

>                                            Thanks
>                                            WA6PMW
Like everything else, "thin" and "low loss" are in the mind of the
designer.  Some people say that the dielectric losses at 1 Gig are
negligible.  Horsefeathers.  Polyethelyne has a loss tangent that is
significant above 500 Meg.  But once again, "it depends".  Whoever
suggested RG188 was right on target (silver plated with teflon
dielectric) but you had better have had a rich daddy to consider it.

How about a little more info?  Like how long the run is?  And what you
are trying to accomplish?

Jim



Jim Weir VP Engineering  | "We seem to be standing on
RST Engineering          |  the foreskin of technology."
Grass Valley CA 95945    | (Gen Chuck Yeager)
voice/fax [phone]   |
[e-mail]  AR Adv WB6BHI  CFI A&G/Comml Inst A&G/A&P/C-182A N73CQ



From Unknown Mon Nov 06 21:01:59 1995
Path: news.epix.net!news.sprintlink.net!news.azstarnet.com!usenet
From: Wes Stewart <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Low Beam Question
Date: 4 Nov 1995 15:25:55 GMT
Organization: Arizona Daily Star - AZSTARNET
Lines: 42
Message-ID: <47g0m3$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: usr5ip11.azstarnet.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

[e-mail] (Steve Ellington) wrote:
>Consider a 2 element 80 meter yagi about 40ft above the ground.
>
>1. Is the radiation pattern the same as a dipole at the same height with
>   most of the RF going straight up?

>2. Is there any Front to back ratio at that height?

>3. If there is gain, is it at high angles or lower angles?

>4. Is there any cancellation of high angle radiation?

>5. Let's assume we desire gain at high angles. Would a horizontal yagi
>   be in order or  should we put the reflector underneath the driven
>   element?

>6. If we put the reflector on the ground I suspect it would no longer be
>   resonant therefore it would not be a Yagi. Correct?

>7. Let's say I want to beam my signal using 80 meters to a location
>   only 500 mile away. How can I direct it at such a high angle?
>   and minimize ground losses.



Steve:

I did a quick EZNEC analysis, while online, of a two element yagi at 45'
I didn't optimize the antenna, just took off the director on the 3el NBS
Yagi. Using the high accuracy "good" ground model, the gain is max at 47 deg
elevation. The gain is 7.75 dBi with a 4.5 dB FB and 3 dB beamwidth of 84 deg.

A dipole at the same height, ground, etc. has 5.73 dBi gain at 47 deg and
of course no FB ratio. So, you get 2 dB gain and 4.5 dB FB improvement for
your efforts :-(

If you need more info, email and I can take more time to analyze and
less BW here.

73
Wes -- N7WS



From Unknown Mon Nov 06 21:02:01 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!sparky!nlcnews.nlc.state.ne.us!usenet
From: [e-mail] (Gary McDuffie, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Low Beam Question-Related <Q>?
Date: Sun, 05 Nov 1995 19:37:24 GMT
Organization: AG0N's Radio Ranch
Lines: 35
Message-ID: <47j3m1$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: 198.206.239.249
X-Newsreader: Forte Agent .99b.112

On Fri, 3 Nov 1995 21:05:24 GMT, [e-mail] (Steve Ellington)
wrote:


~~~ several deleted...

>7. Let's say I want to beam my signal using 80 meters to a location
>   only 500 mile away. How can I direct it at such a high angle?
>   and minimize ground losses.

In a related question...

I'm assuming :) that the "cloud warmer" characteristics of a horizontal loop
operated at the design frequency would be approximated by the popular
reflector-under-the-dipole method of localizing the coverage of a simple
dipole.

A) Is this true?  i.e. is the angle the same?

B) With the estimated 500-600 mile local coverage umbrella provided by the
loop, would it be the same with the dipole/reflector arrangement?  It seems
like it should be, but is it?  Or, is the loop more concentrated?

C) If you wanted to tilt the range to 700-1000 miles in a given direction,
would the offset angle of the dipole-reflector arrangement be the same as the
angle you would tilt a horizontal loop?

D) How many degrees offset (tilt) would you use to accomplish this and how do
you calculate it?
 _____                       _____ _____ ___ _____
|   __|___ ___ _ _    ___   |  _  |   __|   |   | |
|  |  | .'|  _| | |  |___|  |     |  |  | | | | | |
|_____|__,|_| |_  |         |__|__|_____|___|_|___|
              |___| [e-mail]



From Unknown Mon Nov 06 21:02:02 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Douglas Finke <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: MFJ-1798 10 band antenna help
Date: 5 Nov 1995 09:12:49 GMT
Organization: SMC
Lines: 17
Message-ID: <47hv6h$glc$[e-mail]>

I have the MFJ-1798.  It seems to work pretty well.  I haven't tried it
on 6 and 2 but all the other bands work OK.  My only complaint is that
the bandwidth is limited on 80 and 40 to only about 25-35 Khz.

Assembly is probably a little more difficult than its competitors like
the R7.  It took me a weekend to do and tune-up can take some time
because there is interaction between the lower bands.

I've had it up about 4 months now and it has withstood several heavy
rainstorms. Nonetheless, I have to see how it holds up this winter to
see if it survives snow and ice storms.

73's,

Doug, K9DF
--
Douglas Finke


From Unknown Mon Nov 06 21:02:03 1995
Path: news.epix.net!news.sprintlink.net!in2.uu.net!lehua.ilhawaii.net!usenet
From: [e-mail] (T.Smith)
Newsgroups: rec.radio.amateur.antenna
Subject: Need Help with AM antenna
Date: 5 Nov 1995 20:39:29 GMT
Organization: PRMA
Lines: 3
Message-ID: <47j7e1$[e-mail]>
NNTP-Posting-Host: pm35.ilhawaii.net
X-Newsreader: Cyberjack News 7.00 Build 254.20

I have a business inside a concrete building and can't receive am radio
transmissions. The office is about 30 ft from a window. Does anyone have any
suggestions for a novice to pull in the signal in least expensive manner?


From Unknown Mon Nov 06 21:02:03 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!wb3ffv!news.scn.org!scn.org!bb840
From: [e-mail] (James Aeschliman)
Subject: Re: Need Help with AM antenna
Message-ID: <[e-mail]>
Sender: [e-mail]
Reply-To: [e-mail] (James Aeschliman)
Organization: Seattle Community Network
References: <47j7e1$[e-mail]>
Date: Mon, 6 Nov 1995 19:44:27 GMT
Lines: 17


In a previous article, [e-mail] (T.Smith) says:

>I have a business inside a concrete building and can't receive am radio
>transmissions. The office is about 30 ft from a window. Does anyone have any
>suggestions for a novice to pull in the signal in least expensive manner?
>

The first thing you need to do is find an AM radio with some type of
provision for an external AM antenna.  Then run a suitable feed line to
the window and connect to a small coil AM antenna (or some other
suitable AM antenna) there.  DO NOT try to connect a wire to the antenna
circuit inside the AM radio, especially a newer solid state radio.  You
may end up with 120 VAC on the wire, and this is DANGEROUS!
--
Jim Aeschliman                      [e-mail]
Black Diamond, Washington           KD7MK


From Unknown Mon Nov 06 21:02:04 1995
Path: news.epix.net!news.sprintlink.net!simtel!chi-news.cic.net!news.nd.edu!news.bsu.edu!figmnt.tayloru.edu!jhschutt
From: [e-mail] (Dr. John Robert Schutt)
Newsgroups: rec.radio.amateur.antenna
Subject: PLEASE HELP A NEW HAM W/ ANTENNA
Message-ID: <[e-mail]>
Date: 1 Nov 95 11:39:55 -0500
Organization: Taylor University
Lines: 24

Can you help me?  I have a very small city lot and am trying to put up an
antenna.  I'm thinking of running a dipole along the ridgeline of my house
(or along the gable ends), making it as long as I can.  The ridgeline is about
30 feet.  I could let it dangle over the edge of the roofline from there.  I'm
thinking about feeding it with twinlead into an antenna tuner (I'm looking at
one made by MFJ that handles 300 watts and has a built in SWR meter and dummy
load.)

I'd like to work 10-80 meters.  My son and I are thinking of starting with a
qrp rig to save expenses.  How does this plan sound to you expert, experienced
hams?  Is my thinking correct (before I lay out the cash?)  My son and I would
like to get on the air (CW at first) but advice from you seasoned hams would be
greatly appreciated!  Is there a better way than that which I've proposed?

THANKS A LOT IN ADVANCE!!

Either post here or e-mail your reply.
_______________________________________________________________________________
John Robert Schutt                         /\         [e-mail]
Taylor University- Fort Wayne             //\\        [phone]
1025 W. Rudisill Blvd.                   ///\\\       FAX: [phone]
Fort Wayne, IN 46807                       ||
-------------------------------------------------------------------------------



From Unknown Mon Nov 06 21:02:06 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: RF Choke for Vertical
Date: 4 Nov 1995 08:37:45 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 22
Sender: [e-mail]
Message-ID: <47fqb9$[e-mail]>
References: <477vnc$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <477vnc$[e-mail]>, [e-mail] (Gary York)
writes:

>
>Does anybody have any experience with using a choke between a radialless
>vertical and the feedline.  I plan on taking some local friends'
suggestion
>to get about 25 ft of coax and construct a simple coil about 8 inches in
>diameter and about 10 turns.  The reason is that I have experienced some
RF
>feedback in the shack.  Any info is greatly appreciated
>N6UGJ

Some time back W7EL published a nice list of choke impedances. Any choke
will help, the impedance is not critical. It should be as large as
possible without series resonance. You can test for series resonance with
your radio, a dummy load, and a light bulb, OR a grid dip meter or antenna
analyzer. If you want to do that I can explain how.

I use air wound chokes here on almost everything, and ferrite sleeve
chokes on receiving arrays. It's a great idea!
73 Tom


From Unknown Mon Nov 06 21:02:07 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!simtel!lll-winken.llnl.gov!decwrl!amd!netcomsv!uu4news.netcom.com!netcomsv!uu3news.netcom.com!ix.netcom.com!netcom.com!hmaxwell
From: [e-mail] (Helene Maxwell)
Subject: spacing on 6M Yagi 3?
Message-ID: <[e-mail]>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
X-Newsreader: TIN [version 1.2 PL1]
Date: Sun, 5 Nov 1995 21:38:07 GMT
Lines: 28
Sender: [e-mail]

I just acquired a 3 element Yagi for six meters.  It was home built
and has no instructions, just some pinch marks on the boom from prior use to
guide me.  Having not put one together before, I need to determine the
correct spacing between the elements.

As it is currectly assembled the lengths are:

        Boom: 8'
        radiator: 9'5"
        reflector: 9'8"
        director: 8'7"

        It is made of 3/4" aluminum tubing.  Assuming the lengths above
are correct, how are the elements spaced?  I'm planning to use it for FM
work.

        The ARRL antenna book (and software) hasn't been much help.

        I must confess I also don't know what to do with the feed
portion- i.e. a little arm about 2' long with a half round piece that
looks as though it's meant to be pressed up against the radiating element
to drive it- is it that simple?

        Thanks very much to any antenna wizards who are able to suggest
any spacings to try before I put it up on a mast. 73-

        Randy



From Unknown Mon Nov 06 21:02:07 1995
Path: news.epix.net!news.sprintlink.net!news.interserv.net!usenet
From: ken
Newsgroups: rec.radio.amateur.antenna
Subject: test text msg.
Date: 4 Nov 1995 19:26:12 GMT
Organization: InterServ News Service
Lines: 2
Message-ID: <47geok$[e-mail]>
NNTP-Posting-Host: pppline3.lincoln.edu
X-Newsreader: AIR News 3.X (SPRY, Inc.)

this is a test msg from a new user.



From Unknown Mon Nov 06 21:02:08 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!btnet!dispatch.news.demon.net!demon!mail2news.demon.co.uk!relay-4.mail.demon.net
From: Michael J Wooding <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: VHF Communications Magazine
Date: Sat, 04 Nov 1995 19:26:46 GMT
Organization: None
Lines: 26
Message-ID: <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: relay-4.mail.demon.net
X-Broken-Date: Saturday, Nov 04, 1995 19.26.46
X-Newsreader: Newswin Alpha 0.7

Hi there,

Yes I am afraid its me again - but initiating my own thread!!!

I now I cannot compete with HRT - heaven forbid! - but for all those
who might be interested we have arrived on the Web!

Our Web pages can be found at:

http://www.taynet.co.uk/~gdx/ag/vhfcomm.htm

Initially our pages are quite simple, in order to guage response etc.
So, please let me have your comments (not too unkind please!) and
suggestions and I will see what can be done.

Even better - how about subscribing!!!!!!

73 ... Mike
--
Michael J Wooding   [e-mail]
CompuServe: 100441,377
Tel: [phone]   Fax: [phone]
KM Publications, 5 Ware Orchard, Barby, Nr.Rugby, CV23 8UF, UK
VHF Communications Magazine - Especially Covering VHF, UHF and Microwaves



From Unknown Mon Nov 06 21:02:09 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!btnet!dispatch.news.demon.net!demon!mail2news.demon.co.uk!relay-4.mail.demon.net
From: Michael J Wooding <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: VHF Communications Magazine
Date: Sun, 05 Nov 1995 14:12:28 GMT
Organization: None
Lines: 26
Message-ID: <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: relay-4.mail.demon.net
X-Broken-Date: Sunday, Nov 05, 1995 14.12.28
X-Newsreader: Newswin Alpha 0.7

Hi there,

Yes I am afraid its me again - but initiating my own thread!!!

I know I cannot compete with HRT - heaven forbid! - but for all those
who might be interested we have arrived on the Web!

Our Web pages can be found at:

http://www.taynet.co.uk/~gdx/ag/vhfcomm.htm

Initially our pages are quite simple, in order to guage response etc.
So, please let me have your comments (not too unkind please!) and
suggestions and I will see what can be done.

Even better - how about subscribing!!!!!!

73 ... Mike
--
Michael J Wooding   [e-mail] - CompuServe: 100441,377
Web Pages: http://www.taynet.co.uk/~gdx/ag/vhfcomm.htp
Tel: [phone]   Fax: [phone]
KM Publications, 5 Ware Orchard, Barby, Nr.Rugby, CV23 8UF, UK
VHF Communications Magazine - Especially Covering VHF, UHF and Microwaves



From Unknown Mon Nov 06 21:02:10 1995
Path: news.epix.net!news.sprintlink.net!in1.uu.net!EU.net!uknet!dispatch.news.demon.net!demon!mail2news.demon.co.uk!microvst.demon.co.uk
From: "Anthony R. Gold" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: VHF Communications Magazine
Date: Sun, 05 Nov 95 22:15:42 GMT
Organization: Microvest Limited, London
Lines: 25
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: microvst.demon.co.uk
X-Newsreader: Demon Internet Simple News v1.29

In article <[e-mail]>
           [e-mail] "WB3U" writes:

> Is my news reader on the fritz or is this being reposted daily?

Your newsreader is fine, Jack.

The main problem is that he does not understand cross-posting and so is
posting separately to:

rec.radio.amateur.antenna
rec.radio.amateur.equipment
rec.radio.amateur.misc
rec.radio.swap
uk.radio.amateur

Also in this group he did post twice in two days because he saw he'd made
a typo.

Regards,
--
   Tony - G3SKR / AA2PM                  email: [e-mail]
                                                [e-mail]
                                        packet: g3skr@n0ary.#nocal.ca.usa.na


From Unknown Mon Nov 06 21:02:11 1995
Path: news.epix.net!news.sprintlink.net!matlock.mindspring.com!usenet
From: mike del pozzo <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Wire beams,wire Logs on 80m?
Date: 6 Nov 1995 12:39:52 GMT
Organization: MindSpring Enterprises
Lines: 24
Message-ID: <47kvmo$[e-mail]>
References: <4794kg$[e-mail]>
NNTP-Posting-Host: kr4tg.mindspring.com

Josh  <[e-mail]> wrote:
>
> Does anyone have experience with wire gain arrays on 80 meters.
> I am just curious to hear any stories, successes, failures
> with dedicated gain antennas on 80m. Thanks
>
> Josh WX7K
>
>
hello josh perhapps i can suggest an array that i have built with great
success: from the pages of the ARRL Antenna book they have an article
on the low band wire-logyag. Truly a very good design. It invoves using
multiple inverted vees all commonly fed with very impressive gain -
provided you have enough room in the yard to hang up this beast. I had
personally built this antenna with one modification done: Rather than
use a 4:1 balun, I fed it with open wire line which enabled me to use
it for multiple band. the result - well outstanding for even Field Day.
worked well on 40 and even tuned it for 160 at one point. Try it or even
expand on the idea by increasing size (no. of el.) and let me know how
it worked for you. Good Luck es Good DX'ing
                                            73
                                            Mike KR4TG
                                            Woodstock, GA



From Unknown Mon Nov 06 21:02:12 1995
Path: news.epix.net!news.sprintlink.net!simtel!chi-news.cic.net!uwm.edu!cs.utexas.edu!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help with old rg-8"
Date: 5 Nov 95 00:50:57 GMT
Organization: ucsd usenet gateway
Lines: 3
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

The mailing list "with" could not be found.
You may use the INDEX command to get a listing
of available mailing lists.


From Unknown Sat Nov 11 06:55:41 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsat!engineer.mrg.uswest.com!news.uoregon.edu!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!howland.reston.ans.net!EU.net!sun4nl!inter.nl.net!waasdorp
From: Coen Waasdorp <[e-mail]>
Subject: Re: 1/2 wave vertical for 20 mtrs, how to feed?
X-Nntp-Posting-Host: ldn99-27.leiden.nl.net
Message-ID: <[e-mail]>
Sender: [e-mail] (News at news)
Organization: NL Net
X-Newsreader: Turnpike Version 1.06 <V3qIi1cDYF6SVYARD7$C+H0$PN>
References: <NH4ZhCAh$[e-mail]>
 <[e-mail]> <[e-mail]>
 <47o3r1$[e-mail]>
Mime-Version: 1.0
Date: Wed, 8 Nov 1995 19:54:20 GMT
Lines: 26

In article <47o3r1$[e-mail]>, Zack Lau <[e-mail]> writes
>Coen Waasdorp <[e-mail]> wrote:
>>In article <[e-mail]>, Frank G3YCC
>><yorks@frank> writes
>>>
>>>Hi! Another idea is to use a parallel tuned cct, the top of which goes
>>>to the 33 foot vertical. No earth or radials are needed. Tap up from >
>>a)  properly insulate the top from the bottom tube,
>>b)  give enough mechanical strenth to withstand force 4 <yes four)
>>winds, so not to think of any stronger ones,
>>c)  allows an easy method to assemble and de-assemble the vertical.
>>
>Have you tried making something out of polycarbonate or Lexan?
>I recall this being used as a center insulator for a 40 meter
>yagi.--Zack KH6CP/1
>

Hi Zack,

Tks for your suggestion. I have not considered this option. Certainly I
will look into this.

73
--
Coen Waasdorp
PA0COE


From Unknown Sat Nov 11 06:55:42 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.texas.net!news-out.internetmci.com!newsfeed.internetmci.com!in1.uu.net!iglou!iglou2!n4lq
From: [e-mail] (Steve Ellington)
Subject: Re: 1/2 wave vertical for 20 mtrs, how to feed?
X-Nntp-Posting-Host: iglou2.iglou.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News Administrator)
Organization: IgLou Internet Services (1-800-436-4456)
X-Newsreader: TIN [version 1.2 PL2]
References: <NH4ZhCAh$[e-mail]> <[e-mail]>
Date: Fri, 10 Nov 1995 00:57:01 GMT
Lines: 4

If you guys keep heading in this direction, you may reinvent the GAP
vertical.
--
Steve Ellington [e-mail]  Louisville, Ky


From Unknown Sat Nov 11 06:55:43 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!ncar!news-out.internetmci.com!internetMCI!newsfeed.internetmci.com!news.kei.com!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: 300 ohm SWR Power Meter
Date: 10 Nov 1995 18:17:17 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 10
Distribution: world
Message-ID: <4804vd$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

I building a 300 ohm balanced SWR Power Meter. I've found a great box to put
it in. Fair Radio Sales has a used-reparable 600w 50 ohm meter for $45 that
has 12x600 ohm non-inductive 50w resistors in it. 12x600 ohm resistors in
parallel is 50 ohms at 600w but 8x600 ohm 50w resistors in series/parallel
is a 400w, center-tapped, 300 ohm dummy load. :-) 12x600 ohm 50w resistors in
series/parallel is a 600w, 450 ohm dummy load. The part number is ME-165 and
Fair's telephone number is [phone]. It's also available unused for $125
and the manual is $8.50.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Sat Nov 11 06:55:44 1995
Path: news.epix.net!news.sprintlink.net!simtel!chi-news.cic.net!newsfeed.internetmci.com!psgrain!fizban.solace.mh.se!demos!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 40 m vertical (from .homebrew)
Date: 7 Nov 1995 17:13:27 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 27
Message-ID: <47o43n$[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de

>No, all they say is that you do not *have* to operate a halfwave
>near lossy Earth. You can elevate it with no ill effect.

Hi Gary,

You could operate a 11 meter HT from a baloon without ill effects, (at
least during transmit). And they are surely not a halfwave long.

However, the discussion was about slim verticals over ground, and
according to the text book available to me, the differences of a
quater wave to a half  wave are as follows:

The radiation resistance, defined as Rr = total radiated power
/(antenna current)^2 is 35 Ohms for a 1/4 wave and 100 Ohms for a half
wave. Now the antenna efficiency is related to the radiation
resistance (Rr) and the ground loss resistance (Rl) in the following
way:

efficiency = Rr / (Rr + Rl).

At conditions, where the quater wave has an efficiency of 25 %, this
gives a value of 50 % for the halfwave. Considering that a proper
ground plane brings both antennas up to nearly 100%, there is may be
a significant diference between the two, but it is not so, that the
1/4 wave requires a gp where the 1/2 wave does not.

73, Moritz DL5UH


From Unknown Sat Nov 11 06:55:45 1995
Path: news.epix.net!news.sprintlink.net!braintree!news.concourse.com!ragnarok.oar.net!malgudi.oar.net!catseye.bluemarble.net!usenet.ucs.indiana.edu!vixen.cso.uiuc.edu!uwm.edu!chi-news.cic.net!newsfeed.internetmci.com!in2.uu.net!cospo.osis.gov!portal.dia.osis.gov!swiss.ans.net!newsjunkie.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 40 m vertical (from .homebrew)
Date: 9 Nov 1995 11:50:29 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 52
Sender: [e-mail]
Message-ID: <47tbgl$[e-mail]>
References: <47o43n$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47o43n$[e-mail]>,
[e-mail] () writes:
>efficiency = Rr / (Rr + Rl).
>At conditions, where the quater wave has an efficiency of 25 %, this
>gives a value of 50 % for the halfwave. Considering that a proper
>ground plane brings both antennas up to nearly 100%, there is may be
>a significant diference between the two, but it is not so, that the
>1/4 wave requires a gp where the 1/2 wave does not.
>
>73, Moritz DL5UH

Hello Mortz,

This idea is correct, but all loss resistances have to be normalized or
measured at the point where radiation resistance is taken.

I agree with your basic statements, the 1/2 wl near earth does require a
ground plane to minimize losses, and ALL end fed 1/2 wl antennas need some
form of counterpoise. Without some counterpoise it would be impossible to
end feed them. The loss takes on two forms, field induced losses and
direct connection losses.

Speaking only about the second more predictable loss, feeding the base of
ALL antenna lengths requires current flow. Currents equal to the net
radiator base currents must flow in the counterpoise at the feedpoint.
That current causes ground I*I* R losses. Those I*I*R losses are
proportional only to the net base current of the antenna, and not the
current loop radiation resistance.

I think the reference book must have been referring to the base radiation
resistance of the vertical, rather than the more common IEEE definition of
the "total electromagnetic power radiated divided by the square of the
current causing the radiation".  The IEEE definition must have been
applied if the r-rad of the vertical 1/2 wl antenna was listed as ~100
ohms. If that definition is used, the ground losses must be normalized or
transformed to the value that appears at the current loop of the antenna.

The base current (and this form of power loss) in the ground system
depends on the BASE radiation resistance, and that can vary wildly with
the L/D ratio of the element and the length of the element. This is
probably the most frequent error in all non-professional antenna
handbooks.

But you are absolutely correct. For maximum efficiency, the 1/2 wl end fed
antenna requires *some* form of ground. Even a vertical dipole (the kind
of dipole nearly all of us think of, the insulated and fed at the center
type) requires a ground to reduce field induced losses in the earth. I
only disagree with the method of calculating ground loss. It was not
defined correctly in the refernce book.

73,
Tom Rauch W8JI


From Unknown Sat Nov 11 06:55:46 1995
Path: news.epix.net!news.sprintlink.net!news.bluesky.net!solaris.cc.vt.edu!newsfeed.internetmci.com!news.msfc.nasa.gov!elroy.jpl.nasa.gov!lll-winken.llnl.gov!venus.sun.com!news2me.EBay.Sun.COM!jethro.Corp.Sun.COM!mandalay!aga
From: [e-mail] (Tony Angerame - Sun SE)
Newsgroups: rec.radio.amateur.antenna
Subject: 40-20 meter loop
Date: 8 Nov 1995 17:19:41 GMT
Organization: Sun Microsystems Inc.
Lines: 9
Distribution: world
Message-ID: <47qord$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: mandalay.corp.sun.com

Has anyone used a Capon type loop on forty? I was contemplating building one to hang
under the fiberglass shell of my pickup. I was going to use the dimensions in the QST article by Capon which turns out to be about 16.5 feet circumference
square not a circle to fit the shell. I hope to improve the noise situation on mobile
and gain a little convenience by not having to change whips/resonators etc. Reasonable?


                                                      Tony  WA6LZH




From Unknown Sat Nov 11 06:55:47 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!chi-news.cic.net!simtel!news.net99.net!news.alt.net!connectus.com!ki3v
From: [e-mail] (Richard hallman)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 80M KLM
Date: 7 Nov 1995 00:01:16 GMT
Organization: Reno DX
Lines: 28
Distribution: world
Message-ID: <47m7kc$[e-mail]>
Reply-To: [e-mail]

In message <[e-mail]>, [e-mail] (KS9K
Paul Hellenberg) writes:

>Hello All
>
>I just signed on tto the refector and a friend told me that there was a KLM
>80M-4 for sale I must have copied the phone number wrong because I got
>a very suprise answer on the other end.
>
>Can aonyone help ???????????
>
>
>Paul KS9K
>

  This has been bought by NZ7E here in Reno......Sorry!!

Will go well with his NEW hilltop QTH being built....

See ya!


**********************************************************
Richard Hallman               [e-mail]
11870 Heartpine St
Reno Nv  89506               ki3v@w7ta.#nonev.nv
*********************************************************



From Unknown Sat Nov 11 06:55:48 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!news.kei.com!simtel!swidir.switch.ch!scsing.switch.ch!news.belwue.de!news.informatik.uni-stuttgart.de!gelleric
From: [e-mail] (Wolfgang Gellerich)
Newsgroups: rec.radio.amateur.antenna
Subject: Address of Jennings ?
Date: 7 Nov 1995 08:05:23 GMT
Organization: Informatik, Uni Stuttgart, Germany
Lines: 23
Sender: gelleric@kafka (Wolfgang Gellerich)
Distribution: world
Message-ID: <47n403$[e-mail]>
NNTP-Posting-Host: kafka.informatik.uni-stuttgart.de

I am going to build a magnetic loop and made the experience that variable
vacuum capacitors are very difficult to find here in germany. However, a company
called Jennings, USA, produces them. Does anyone have the address of
Jennings ?

Thanks for your help !

vy 73, Wolfgang DJ3TZ



+----------------------------------------------------------------------------+
|Wolfgang Gellerich                    [e-mail] |
|Universitaet Stuttgart; Institut fuer Informatik                            |
|Breitwiesenstrasse 20-22; D-70565 Stuttgart; Germany                        |
|Tel. [phone]  Fax [phone]                                   |
|(Amateur Radio : DJ3TZ@DB0RBS.#BW.DEU.EU)            ACM Member No. 4436341 |
+----------------------------------------------------------------------------+







From Unknown Sat Nov 11 06:55:49 1995
Path: news.epix.net!mango.epix.net!gmfoster
From: Garry Foster <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Address of Jennings ?
Date: Wed, 8 Nov 1995 11:23:47 -0500
Organization: epix.net
Lines: 41
Message-ID: <[e-mail]>
References: <47n403$[e-mail]>
NNTP-Posting-Host: mango.epix.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <47n403$[e-mail]>

Well if you don't find it email and I will look it up. However I would
suggust that you try to find surplus as they are very expensive. A great
many surplus Vacuun Variable are still available from sources here.
Try Fair Radio Sales for one source. Or post in homebrew for help in
location one. Heck post here for a source. What value and voltage level
do you require.

                                                Garry(WB0NNo)


On 7 Nov 1995, Wolfgang Gellerich wrote:

:> I am going to build a magnetic loop and made the experience that variable
:> vacuum capacitors are very difficult to find here in germany. However,
" a company
:> called Jennings, USA, produces them. Does anyone have the address of
:> Jennings ?
:>
:> Thanks for your help !
:>
"> vy 73, Wolfgang DJ3TZ
:>
:>
:>
:>
:+----------------------------------------------------------------------------+
> |Wolfgang Gellerich                    [e-mail] |
:> |Universitaet Stuttgart; Institut fuer
:Informatik                            |
"> |Breitwiesenstrasse 20-22; D-70565 Stuttgart;
"Germany                        |
> |Tel. [phone]  Fax [phone]                                   |
> |(Amateur Radio : DJ3TZ@DB0RBS.#BW.DEU.EU)            ACM Member No. 4436341 |
> +----------------------------------------------------------------------------+
>
>
>
>
>
>
>


From Unknown Sat Nov 11 06:55:50 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.msfc.nasa.gov!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!geraldo.cc.utexas.edu!ausnews.austin.ibm.com!woody
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Address of Jennings ?
Date: 10 Nov 1995 18:13:01 GMT
Organization: IBM AWD, Austin
Lines: 48
Distribution: world
Message-ID: <4804nd$[e-mail]>
References: <47n403$[e-mail]>
NNTP-Posting-Host: lemcke.austin.ibm.com

[e-mail] (Wolfgang Gellerich) writes:
> I am going to build a magnetic loop and made the experience that variable
> vacuum capacitors are very difficult to find here in germany. However, a company
> called Jennings, USA, produces them. Does anyone have the address of
> Jennings ?
>
> Thanks for your help !
>
> vy 73, Wolfgang DJ3TZ
>
>
>
> +----------------------------------------------------------------------------+
> |Wolfgang Gellerich                    [e-mail] |
> |Universitaet Stuttgart; Institut fuer Informatik                            |
> |Breitwiesenstrasse 20-22; D-70565 Stuttgart; Germany                        |
> |Tel. [phone]  Fax [phone]                                   |
> |(Amateur Radio : DJ3TZ@DB0RBS.#BW.DEU.EU)            ACM Member No. 4436341 |
> +----------------------------------------------------------------------------+
>
>
>
>
>

Wolfgang,

  I needed a Jennings vacuum relay for converting an amp to full QSK and had
a good experience dealing with Mark Olson (KE9PQ).  He had a list of other
surplus parts which I believe contained vacuum capacitors at good prices.
His address is:
  Mark Olson
  605 14th Ave.
  Green Bay, WI 54303

73 es gl,
Woody Lemcke  KB5YKK  << All material is my own! >>













From Unknown Sat Nov 11 06:55:51 1995
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From: Josh  <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Advice on good mobile antenna for IC-706 HF rig wanted.
Date: 4 Nov 1995 13:17:43 GMT
Organization: Internet Services Montana, Inc.
Lines: 9
Message-ID: <47fp5n$[e-mail]>
References: <[e-mail]>
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The Texas Bug catcher is very tuff to beat. You may need to do
some work on your car -like metal straps to connect body part etc.
In actual test with field strength meters for comparison you would be
very hard put to beat  the BUG CATCHER DESIGN.


josh WX7K




From Unknown Sat Nov 11 06:55:52 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!info.ucla.edu!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Amateur Radio Webpages on Internet
Date: 8 Nov 95 15:19:42 GMT
Organization: ucsd usenet gateway
Lines: 10
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

Looking for a ready-to-use set of Amateur Radio WWW Links?
I've put the latest rev. of ham-www.html at:
http://uhavax.hartford.edu/disk$userdata/faculty/newsvhf/www/ham-www.html
Over 300 Ham-related WWW sites, sorted alphabetically with descriptions !
I'll be updating it periodically. Feel free to write it into your page.
If you'd like instructions/background info with it, look next week at:
ftp://ftp.coast.net/SimTel/win3/hamradio/ham-www2.zip
-73, Ron WZ1V
-email: [e-mail]
-N.E.W.S. Group VHF club URL: http://uhavax.hartford.edu/newsvhf


From Unknown Sat Nov 11 06:55:53 1995
Newsgroups: rec.radio.amateur.antenna
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From: "Al Koblinski  (W7XA)" <[e-mail]>
Subject: Re: Antenna for Rs-15
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I use a circularly polarized 7 el (14 total) KLM with about 20 Watts out
and can hit it any time it is in range (I can hear the 2Mtr beacon).
It is quite easy to access but so far not much activity on it.
I expect even a small beam would probably work OK.  With 50 watts or so
you could also use a turnstile as described in the ARRL handbook (I
think).
73, Al




From Unknown Sat Nov 11 06:55:54 1995
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From: Mark Whittington - KE4MAA <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Apartment Antenna?
Date: Tue, 7 Nov 1995 05:25:33 -0500
Organization: Widomaker Public Access Internet [phone]
Lines: 9
Message-ID: <[e-mail]>
NNTP-Posting-Host: paracom.paracom.com
Mime-Version: 1.0
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Hello...

  I live on a third floor apartment and I can't put any antennas up
outdoors.  Does anyone know of a good compact antenna for 20m I could use
inside?  Thanks!

73
Mark, KE4MAA



From Unknown Sat Nov 11 06:55:54 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!news.widomaker.com!paracom.paracom.com!ke4maa
From: Mark Whittington - KE4MAA <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Apartment Antenna?
Date: Tue, 7 Nov 1995 13:38:03 -0500
Organization: Widomaker Public Access Internet [phone]
Lines: 18
Message-ID: <[e-mail]>
References: <[e-mail]>
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On Tue, 7 Nov 1995 [e-mail] wrote:

> Hi Mark,
>
> Unless your Apartment is located in a steel reinforced concrete
> building as mine used to be, consider a magnetic loop.
>
> 73, Moritz DL5UH
>

No, not quite that lucky.  :)  Thanks for the suggestion, I'll have to
look into that!

73
Mark, KE4MAA



From Unknown Sat Nov 11 06:55:55 1995
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From: Mark Whittington - KE4MAA <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Apartment Antenna?
Date: Wed, 8 Nov 1995 05:26:37 -0500
Organization: Widomaker Public Access Internet [phone]
Lines: 25
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>
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On Wed, 8 Nov 1995, Bill Turner wrote:

> ----------------------------------------
> Yep, the Isoloop-types made by AEA, MFJ and possibly others work like gang
> busters on 20/15/10.  Their only drawback is their narrow frequency range
> which requires you to retune them when you move more than a few kHz.  Also,
> they are limited to less than 150 watts or so, but in an apartment I wouldn't
> advise you to run more than that anyway unless you REALLY want to get to know
> your neighbors.  :-)

I'm not familiar with these antennas, but I'm sure they're out of my
price range.  How difficult do you think it would be to make a similar
antenna from available materials (hardware store supplied)?
Thanks for the info!

>
> 73, Bill W7LZP
> [e-mail]
>

73
Mark, KE4MAA



From Unknown Sat Nov 11 06:55:56 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (N2WKS)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: apartment antennas
Date: 7 Nov 1995 04:16:11 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 7
Sender: [e-mail]
Message-ID: <47n84r$[e-mail]>
References: <478nla$[e-mail]>
Reply-To: [e-mail] (N2WKS)
NNTP-Posting-Host: newsbf02.mail.aol.com

I'm always looking for good small antenna projects for my limited space
and for travel.  I think that a book like that would find a pretty good
market,
and at $10 it's not a large investment that people would hesitate (I still
use an '85 handbook because the new one is $35).

Zev, N2WKS


From Unknown Sat Nov 11 06:55:57 1995
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From: [e-mail] (W VanHorne)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Balun on R7
Date: 8 Nov 1995 06:58:38 -0500
Organization: The Greater Columbus FreeNet
Lines: 4
Message-ID: <47q61e$[e-mail]>
References: <63BA402C@MHS>
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X-Newsreader: TIN [version 1.2 PL2]

[e-mail] wrote:
: What is the collective opinion of using a balun on the Cushcraft R7?

: Roland WF4P/AAR2AA


From Unknown Sat Nov 11 06:55:58 1995
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From: [e-mail] (Jim Hollenback)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Balun on R7
Date: 8 Nov 1995 20:15:34 GMT
Organization: Hewlett Packard Cupertino Site
Lines: 11
Message-ID: <47r356$[e-mail]>
References: <63BA402C@MHS>
NNTP-Posting-Host: hpwsmjh1.cup.hp.com
X-Newsreader: TIN [version 1.2 PL1.4]

[e-mail] wrote:
: What is the collective opinion of using a balun on the Cushcraft R7?

: Roland WF4P/AAR2AA

What problem do you think your curing? If the R7 box is at all like the R5
box, it already has about 7 or so wraps around a core.

73, Jim, WA6SDM
[e-mail]



From Unknown Sat Nov 11 06:55:59 1995
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From: [e-mail] (Zacharias Liangas)
Newsgroups: rec.radio.amateur.antenna
Subject: beam ant, project:Yr advice pls
Date: Tue, 07 Nov 1995 20:33:46 GMT
Organization: ME!!!!!
Lines: 62
Sender: [e-mail]
Distribution: world
Expires: 10 days
Message-ID: <47onvd$[e-mail]>
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NNTP-Posting-Host: athena.compulink.gr
X-Newsreader: Forte Free Agent 1.0.82



Dear friends


I have a big doubt so I post this masage here

   First lemme tell you my system configuration fr the moment before I
   advise you my problem :
   I use a SONY ICF 7600D , a Lowe HF150 and a Philips Magnavox 2395
   all are digital
   - wire antennas - of 6m sloped 60 deg paralel to az 120 deg - and a
   hor wire 13 m [aralel to 15 deg az .Both are  TV antenna mast
guides
   -home brewn ATU operating 2- 7 mHz for 20 - 5 dB respectively
   Palce of Reception ; Thessaloniki 40N 23E

   Due to my interest in SEA  I have the particular interest for
   listening to the folowing radio stations and under the condidtions
   as below :

   - STM / V o Malaysia ( dir 120 dg az) in 15295 at mean levels of 2-
   3 with QRMers as
   R Liberty  fgrom 15290  at levels S4-5 ( abt 15-25 dB more)
   R F I  from 15300 at nearly same as R L
   from varius hand made account-ments I understood that a great
   amount of signal abt 50-60% is lost due to possible reflexions
   coming from the city's mountains at an angle of 270-025 deg az

-RRI Jakarta in 9680  at mean levels (not always receivable) of S1-2
   Only V of Turkey is QRMer at 9675 but not always QRMing due to very
   low mod

- R Singapore  in 6000 at mean levels  of S2to 3 with
   Deutschlandfunk in 6005 (S4) as the only QRMer or sometimes
   Radio Dubai at 6000  but at verylow level

   I asked  the experts  of my city for making a common antenna
constru
   ction for  these 3 freqs of a antenna individual per band , I also
   read  many boks abt antennas found solutions  but most of them  are
un-
   suitable  for  my  place ( they were quad - X beam  for example) as
I
   have minimal  room in  the 7  level building and possibly can use
only
   small constructions  of  no more than 4 x 4 sqm

   PLease help me , and suggest a good protype fr beam antenna(s)
under
   the above conditions
   Thank you in advance

   [e-mail]
PLEASE ADIVSE ME YOUR OPINIONS BY EMAIL ONLY !

======
test for 8-bit
µß≈ß±Θß≥ δΘ▄πΩß≥
Zakaria Liang!
(namanya untuk kawan sahaja!)



From Unknown Sat Nov 11 06:56:00 1995
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!news.cc.nctu.edu.tw!serv.HiNet.net!news.uoregon.edu!usenet.eel.ufl.edu!newsfeed.internetmci.com!in1.uu.net!news.deltanet.com!rvr0134.deltanet.com!rmccarty
From: [e-mail] (Roger A. McCarty)
Newsgroups: rec.radio.amateur.antenna
Subject: beam w/ no reflector?
Date: Tue, 7 Nov 1995 01:32:41
Organization: Accurate! Electronics
Lines: 12
Distribution: usa
Message-ID: <[e-mail]>
NNTP-Posting-Host: rvr0134.deltanet.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B]

I am contemplating building a 3 element beam for the 6 meter band, using the
arrl yagi modeling program. It has occurred to me that on this band, and
considering that my main purpose is to use it on an AM round table where many
long path individuals will be west, and many locals to the east, that maybe a
3 element sans reflector would be a good design choice. Is there any inherent
problems with this design (other than poor f/b, which I hope to put to
use) that I am not aware?

Thanks in advance

Roger KD6CC



From Unknown Sat Nov 11 06:56:01 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!pipeline!psinntp!psinntp!psinntp!voder!nsc!news
From: "Al Koblinski  (W7XA)" <[e-mail]>
Subject: Re: beam w/ no reflector?
Content-Type: text/plain; charset=us-ascii
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Lines: 7

Such a beam, with no reflector but with directors would still be
directional.  If you want to work bi-directional, a colinear  array
would be better. You could either use dipoles in phase or 2  2 el beams
pointing east and west.
73, Al




From Unknown Sat Nov 11 06:56:02 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!inquo!vyzynz!news1.cris.com!cdc2.cdc.net!news-out.internetmci.com!internetMCI!newsfeed.internetmci.com!in2.uu.net!li.net!bbruhns
From: [e-mail] (Bob Bruhns)
Newsgroups: rec.radio.amateur.antenna
Subject: Best 160/80 antenna on small lot???
Date: 9 Nov 1995 07:00:00 GMT
Organization: LI Net (Long Island Network)
Lines: 33
Message-ID: <47s8tg$[e-mail]>
NNTP-Posting-Host: linet04.li.net
X-Newsreader: TIN [version 1.2 PL2]

  Small vertical loops.  I am using a 1/2 wave vertical loop on 75 with
great success.  This loop is not just bent around so the ends almost
touch; the ends actually overlap (and still don't touch, a few feet
of spacing).

  On 160, I got some rather good results with 160 feet of 450 ohm ladder
line in the form of a vertical loop 40 feet on a side and cross-connected
as a two-turn loop, center fed with 450 ohm line and a tuner.  I think it
would have been better if the loop had been 60 feet on a side, because it
would have been a two-turn 1/2 wave loop on 160.  I am a believer in
self-resonant antennas; tuners waste power and should be used sparingly.

  Possibly a multi-turn loop could be 1/2 wave resonant on 160 and
full-wave resonant on 75.

  My 75-meter antenna is really unusual in that it is actually two 1/2
wave vertical loops at right angles (one is in vertical N-S plane, the
other is in vertical E-W plane).  I feed these loops in phase quadrature
(one has an extra 1/4 wave of feedline).  This produces circular
polarization at high angles; I find when I have the correct circular sense,
there's a big advantage TX and RX.  That "correct" sense depends on
distance and time of day/night, and it depends on TX or RX.  I built an
antenna relay box which allows me to select TX sense and RX sense
independently.  Fading is reduced TX and RX; the little antenna really
performs, too.  Top fed; W2DU baluns; around 30 feet of overlap.  20' PVC
mast on the chimney does it!  Article in next AM PRESS/EXCHANGE.

                          /||\
                         / || \
                        /  ||  \
                       /   ||   \
                      / _________\
                     /----------


From Unknown Sat Nov 11 06:56:03 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!inquo!vyzynz!news1.cris.com!cdc2.cdc.net!news-out.internetmci.com!internetMCI!newsfeed.internetmci.com!in2.uu.net!li.net!bbruhns
From: [e-mail] (Bob Bruhns)
Newsgroups: rec.radio.amateur.antenna
Subject: Best 160/80 antenna on small lot???
Date: 9 Nov 1995 07:02:13 GMT
Organization: LI Net (Long Island Network)
Lines: 3
Message-ID: <47s91l$[e-mail]>
NNTP-Posting-Host: linet04.li.net
X-Newsreader: TIN [version 1.2 PL2]

  Oops, that 160 meter 2-turn loop should have been 30 feet on a side,
not 60.



From Unknown Sat Nov 11 06:56:04 1995
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!news.cc.nctu.edu.tw!serv.HiNet.net!news.uoregon.edu!stallion.jsums.edu!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!uwm.edu!newsspool.doit.wisc.edu!chi-news.cic.net!news.compuserve.com!newsmaster
From: [e-mail] (Jim Johnson Jr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Best way to mount on a bus?
Followup-To: rec.radio.amateur.antenna
Date: Wed, 08 Nov 1995 15:29:18 GMT
Organization: Eastern Washington University
Lines: 21
Message-ID: <47qich$[e-mail]>
NNTP-Posting-Host: dd58-130.compuserve.com
X-Newsreader: Forte Free Agent 1.0.82

What would be the best way to mount both VHF and CB antennas on a
charter bus?  Please include any suggestions you have on the type of
antennas needed or that you would use.  If I need an antenna on the
front and back don't hesitate to suggest that either.  Remember the
busses are about 12 feet high and bridges are about 14.5 feet.

The VHF channel will most likely be in the 150MHz Range and the CB
will be a normal CB.


Thanks for any info you have!

(If your responses don't show up check the header of this message. I'm
new to the newsreader I have and haven't got it fine tuned just yet!)


Jim Johnson Jr.
Instructor
Seattle Cascades Drum & Bugle Corps
[e-mail]



From Unknown Sat Nov 11 06:56:05 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!uwm.edu!spool.mu.edu!daily-planet.execpc.com!earth.execpc.com!not-for-mail
From: [e-mail] (Terry Hubbard)
Newsgroups: rec.radio.amateur.antenna
Subject: Beverage INFO
Date: 6 Nov 1995 19:04:21 -0600
Organization: Exec-PC
Lines: 14
Distribution: usa
Message-ID: <47mbal$[e-mail]>
NNTP-Posting-Host: earth.execpc.com

I am interested in hearing from anyone who has attempted to setup a
beverage antenna very close to or on the ground. I am interested in
hearing how well it worked and whether or not a preamp was used. I will
be attempting this on 80 meters and also need a source for the preamp.
Any info will be greatly appreciated.

73s Terry


--
-----
Terry Hubbard                  Internet:[e-mail]
Cudahy, WI                     Compuserve: 75347,2614



From Unknown Sat Nov 11 06:56:06 1995
Path: news.epix.net!news.sprintlink.net!hookup!usenet.eel.ufl.edu!brutus.bright.net!chi-news.cic.net!simtel!news.kei.com!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Beverage INFO
Date: 7 Nov 1995 05:01:06 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 39
Sender: [e-mail]
Message-ID: <47nap2$[e-mail]>
References: <47mbal$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47mbal$[e-mail]>, [e-mail] (Terry
Hubbard) writes:

>
>I am interested in hearing from anyone who has attempted to setup a
>beverage antenna very close to or on the ground. I am interested in
>hearing how well it worked and whether or not a preamp was used. I will
>be attempting this on 80 meters and also need a source for the preamp.
>Any info will be greatly appreciated.
>
>73s Terry

Hi Terry,

I have several Beverages here and have used them since the early 70's on
160. I have done a lot of 160 receiving antenna work over the years.

I do use a low-gain, high-intercept, pre-amp with a pair of push pull
LT1001 transistors in the shack, it has about 10 dB of gain. I designed
and built the pre-amplifier using data in RF Design Magazine. Ulric Rhode
had an article in it 15 years or so ago describing low noise high dynamic
range amplifiers.

I feed my Beverages with 75 ohm CATV cable, and use transformers wound on
FB-73-801 ferrite beads as a core for the matching transformers. But I can
hear most DX stations very well without the pre-amp. I only use the amp on
VERY quiet nights.

I use 500 foot long 450 ohm ladder line to construct the elements, so I
can reverse the directions of the antennas, or receive two directions at
the same time on separate receivers. I decouple the coax with choke
sleeves so it doesn't couple unwanted RF to the Beverages.

The 500 foot Beverages work well from the BC band up through 10 meters.
The Beverages are almost always better than my 1/4 wave 160 meter vertical
for receive, but almost never as good as a much smaller phased loop array
(210 foot long array).

73 Tom


From Unknown Sat Nov 11 06:56:07 1995
Path: news.epix.net!news.sprintlink.net!psgrain!news.uoregon.edu!mayonews.mayo.edu!newsdist.tc.umn.edu!umn.edu!spool.mu.edu!daily-planet.execpc.com!news.moneng.mei.com!news.ecn.bgu.edu!vixen.cso.uiuc.edu!uwm.edu!chi-news.cic.net!newsfeed.internetmci.com!in2.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (WA6AWD)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: coax impedance
Date: 7 Nov 1995 04:35:15 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 9
Sender: [e-mail]
Message-ID: <47n98j$[e-mail]>
References: <47k7rv$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47k7rv$[e-mail]>,
[e-mail] writes:

>can anyone tell me the impedance of Beldon 8242 RG-9/u and Beldon 8237
>RG-8/u?

50- or 52-ohms in both cases.  RG-9/U is double shielded, RG-8/U is single
shielded.



From Unknown Sat Nov 11 06:56:08 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!usc!sdd.hp.com!col.hp.com!news.dtc.hp.com!hpscit.sc.hp.com!rkarlqu
From: [e-mail] (Richard Karlquist)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Compressed Video Transmission
Date: 7 Nov 1995 19:42:00 GMT
Organization: Hewlett-Packard
Lines: 15
Message-ID: <47ocq8$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: hpscrj.scd.hp.com

In article <[e-mail]>, Bob Tournoux <[e-mail]> wrote:
>
>Now, being a true ham, seems like there is some real opportunity here
>to investigate a mode of operation that uses compressed video, i.e.,
>KF8QU


Just saw a blurb on TV last night about a PC card made by a company
called Optibase that does compressed digital video to store on your
PC.  The playback is real time, but I gather that the encoding is
non real time.  Don't know the price though.  I'm trying to get
more info; will post what I learn.

Rick Karlquist
[e-mail]


From Unknown Sat Nov 11 06:56:09 1995
From: [e-mail] (Bob Tournoux)
Subject: Re: Compressed Video Transmission
Date: 9 Nov 95 04:38:28 -0800
References: <[e-mail]> <47dm2b$[e-mail]>
Message-ID: <[e-mail]>
Path: news.epix.net!news.sprintlink.net!news.msn.com!msn.com
Newsgroups: rec.radio.amateur.antenna
Organization: The Microsoft Network (msn.com)
Lines: 12

Mike,

Thanks for your thoughts. Sorry I put this in the "wrong" place, now
I'll know at least where it goes.

One comment about 902, 1296 vs 400. Admittedly, I see your point, but
it is still harder to get good signals through my attic or even the
trees at 900 or 1200 than it is at 400.

Thanks again.

Bob


From Unknown Sat Nov 11 06:56:10 1995
Path: news.epix.net!news.sprintlink.net!sparky.insinc.net!huey.cadvision.com!uunet!in1.uu.net!usenet.eel.ufl.edu!tank.news.pipex.net!pipex!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (The2X4)
Newsgroups: rec.radio.amateur.antenna
Subject: FEEDING MULTIPLE ANTENNAS
Date: 31 Oct 1995 19:34:19 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 16
Sender: [e-mail]
Message-ID: <476fab$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Anyone tried any new metods to feed stacked antennas?

I using toroids transformers to feed a pair from the shack. I did this
just in case I lost one in a storm or something. Even if one fails, I can
still use the other since the
feedline are matched inside the shack and not on the boom. Been told that
was
stupid but one year into service it happened. I was able to continue until
the spring
when it was repaired.

I used the Motorola RF data book power combiner article as a source of
info.
Any suggestions?

Carl N9EFJ


From Unknown Sat Nov 11 06:56:11 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!dish.news.pipex.net!pipex!plug.news.pipex.net!pipex!oleane!jussieu.fr!math.ohio-state.edu!howland.reston.ans.net!newsfeed.internetmci.com!news.kei.com!wang!usenet
From: [e-mail] (Bob Raymond)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Femdom In Search of Naughty Boys
Date: 8 Nov 1995 18:07:49 GMT
Organization: Norway
Lines: 17
Message-ID: <47qrll$[e-mail]>
References: <472ft3$op9$[e-mail]> <47njd0$[e-mail]>
NNTP-Posting-Host: elf.wang.com
X-Newsreader: WinVN 0.92.6

In article <47njd0$[e-mail]>, [e-mail] (W8JI  Tom) says:
>
>>Seriously, this is a chance of a lifetime.  I want all you naughty boys
>>to contact me at once.  Do not delay.  Location is unimportant.
>
>OK Wayne. I know you're getting weirder every year, but this is beyond the
>limit! How much lower will you stoop to make a few bucks?
>
>>Let me know how you've been naughty and what type of corrective
>>punishment you deem appropriate.  It's time we clean up the net.
>
>I was very very naughty. I worked CW and I actually enjoyed it. What are
>you going to do Wayne, spank me?

I've seen my share of funny things on the Net, but this one about Wayne
really cracked me up!  Why, I'm green with envy that I didn't think of it
myself!


From Unknown Sat Nov 11 06:56:12 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!gatech!usenet.eel.ufl.edu!brutus.bright.net!chi-news.cic.net!simtel!news.kei.com!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Folded dipole-multiband
Date: 7 Nov 1995 05:00:35 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 29
Sender: [e-mail]
Message-ID: <47nao3$[e-mail]>
References: <47l0be$[e-mail]>
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In article <47l0be$[e-mail]>, [e-mail]
(USENet News System Manager) writes:

>Now as the Subject line says, multiband.
>What opinions would you guys have regarding using this thing as I did
>the dipole on multiple bands?  How DOES a folded dipole tune on
>harmonics of the fundamental band?
>
>Rick    KT2Q

Hi Rick,

I suspect a folded dipole would operate poorly on bands where the elements
are multiples of 1/2 wave long each side of center.

The reason is the element with the direct connection going across the
feedpoint is tightly coupled to the element that is broken and fed, and on
multiples of 1/2 wl (each side of center) the feedpoint normally would
have a very high voltage. You may effectively place a low Z short across
the high Z feedpoint. You could reduce the problem by placing an open 1/4
wave stub at the center of what would normally be the second closed wire.
The connection would appear shorted on bands where the antenna has a low Z
feedpoint, and open on bands where it is high Z.

But I would opt for a conventional dipole for multiband use, especially if
you could make the element thick by using the parallel conductors you
already have. It's much more simple and predictable.

73 Tom


From Unknown Sat Nov 11 06:56:13 1995
Path: news.epix.net!news.sprintlink.net!news.inc.net!uwm.edu!cs.utexas.edu!howland.reston.ans.net!agate!news.mindlink.net!van-bc!unixg.ubc.ca!atha!rwa
From: [e-mail] (Ross Alexander)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Folded dipole-multiband
Date: 7 Nov 1995 18:55:09 GMT
Organization: Athabasca University
Lines: 23
Message-ID: <47oa2d$[e-mail]>
References: <47l0be$[e-mail]>
NNTP-Posting-Host: aupair.cs.athabascau.ca
X-Newsreader: NN version 6.5.0 #10 (NOV)

[Note: I've trimmed some stuff out of the base post. :rwa:]

[e-mail] (USENet News System Manager) writes:

>Now as the Subject line says, multiband.  What opinions would you
>guys have regarding using this thing as I did the dipole on multiple
>bands?  How DOES a folded dipole tune on harmonics of the fundamental
>band?

["this thing" == 80m three-wire folded dipole, fed with ~100 feet of
450 ohm ladder line.  A nice setup, indeed.]

It'll be a almost a perfect short on even multiples of the fundamental.
It should load quite happily on odd multiples.  Maybe a tad capacitive,
but no big deal.  At least, a two-wire folded dipole I once had (cut for
40m) ran nicely on 15m as well, but was dead in the water on 20m and 10m.

regards,
Ross ve6pdq


--
Ross Alexander, ve6pdq  --  [phone]  --  [e-mail]


From Unknown Sat Nov 11 06:56:14 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!bloom-beacon.mit.edu!newsfeed.internetmci.com!info.ucla.edu!galaxy.ucr.edu!proton.llumc.edu!news.cerf.net!usc!math.ohio-state.edu!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Folded dipole-multiband
Date: 10 Nov 1995 23:03:51 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 37
Sender: [e-mail]
Message-ID: <4817b7$[e-mail]>
References: <47r8co$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com

Hi Ross,
In article <47r8co$[e-mail]>, [e-mail]
(Ross Alexander) writes:

>Well, there's still a lot to be said for getting the feedpoint
>impedance raised in order to match the 450 ohm feedline more closely.
>If nothing else, you can get the antenna further from the shack this
>way (for a given feedline loss), and it reduces the stress in the tuner.

That's all true. 450 ohm line is pretty low loss anyway, so the reduction
in loss will be pretty small. But the tuner and balun will certainly have
an easier time.
>
>Here's an idea to shoot down :) - how about a windom-fed two wire
>folded dipole?  (I'm using `windom' in the "balanced off center fed
>dipole" sense, not the classical "single wire off center fed flattop"
>sense.)  Windoms run about 200 ohms at the feedpoint and load nicely
>on all integral multiples of the fundamental.  A folded windom would,
>at a guess, be around 800 ohms - which is still a better match to 450
>than 73 ohms, and not too bad at all if you had home-brew 600 ohm
>feeders.  And when homebrewing openwire, higher impedance is easier
>because you can get away with fewer spreaders per running foot of line.

I'm not sure how that would work. I suspect problems would occur. When the
folded dipole's feedpoint is not in the middle of a current maximum
strange things will happen.

>I ran a single-wire 80m windom via coax and a 4:1 ruthroff balun for a
>year or two.  While not exactly a DX skyhook, it was a fair match on
>any of 80/40/20/15/10 and did yeoman duty until I got some deltas up.
>(This of course doesn't address the question of handling 30, 17, and
>12.)

What is a Ruthroff balun? Perhaps I know it by descripion or another name.

73,
Tom


From Unknown Sat Nov 11 06:56:15 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!eff!blanket.mitre.org!linus.mitre.org!news.mitre.org!m14494-mac.mitre.org!user
From: [e-mail] (Michael White)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: Mon, 06 Nov 1995 16:10:39 -0500
Organization: The MITRE Corporation
Lines: 19
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: m14494-mac.mitre.org
X-Newsreader: Value-Added NewsWatcher 2.0b27.1+

> >For my neat new radio I chose as my antenna a G5RV.

A 'true' G5RV is a flat-top fed with a specific length of ladder line,
which in turn is fed by _any_ length of coax; there is _no_ balun or other
matching device at the coax/ladderline junction. The G5RV is very reactive
on most bands, and requires a tuner. I use one cut for 40 meters, and it
works very well on 40, 20, 15, and 10.  It works less well on 30, and much
to my amazement, tunes up fine on 75. Go figure.

> For maximum efficiency, feed the antenna with ladder line only and
> use a balanced tuner.

Ok, but then it's not a G5RV, just a flat-top. Read G5RV's excellent
article on how his antenna works in the ARRL Antenna Compendium.

--
[e-mail]

My opinions are my own, not my employer's.


From Unknown Sat Nov 11 06:56:16 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!cs.utexas.edu!atlantis.utmb.edu!news.tamu.edu!bcm.tmc.edu!news.msfc.nasa.gov!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 7 Nov 1995 05:00:49 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 37
Sender: [e-mail]
Message-ID: <47naoh$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <[e-mail]>, [e-mail] (Mark
Monninger) writes:

>And also read Maxwell's discussion in "Reflections". You'll see why we
say to
>
>ditch the coax.
>
>My opinion is that the G5RV has been seized upon by some antenna peddlers
who
>
>lead people to believe that it's a real multi-band antenna. They charge
>$50-75
>for $10 worth of wire and twinlead. And then you need a tuner to make it
work
>
>decently anyway. What a rip-off.
>
>73...   Mark   AA7TA
>
>
Mark,

If you actually measure the feedpoint Z of a G5RV you will see that it is
reasonable on several bands.

I measured one designed for 80 meters, the SWR was under 3:1 (measured
with a GR bridge or an HP net analyzer) on the resonant frequency of the
antenna on 80, 40, 20, and 12 meters. I was suprised by this after all the
bad publicity, but it is a repeatable fact! The SWR was horrid on 15 and
ten meters though!

It should have some type of choke balun at the ladder line to coax
junction. That only makes sense!

73,
Tom


From Unknown Sat Nov 11 06:56:17 1995
Path: news.epix.net!news.sprintlink.net!news.wwwi.com!nntpgate.primenet.com!nntpdist.primenet.com!primenet.primenet.com!markem
From: [e-mail] (Mark Monninger)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: Tue, 7 Nov 1995 19:30:21 MST
Organization: Primenet
Lines: 14
Message-ID: <[e-mail]>
References: <[e-mail]> <47naoh$[e-mail]>
NNTP-Posting-Host: ip062.phx.primenet.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #4]

In article <47naoh$[e-mail]> [e-mail] (W8JI  Tom) writes:
>If you actually measure the feedpoint Z of a G5RV you will see that it is
>reasonable on several bands.

>I measured one designed for 80 meters, the SWR was under 3:1 (measured
>with a GR bridge or an HP net analyzer) on the resonant frequency of the
>antenna on 80, 40, 20, and 12 meters. I was suprised by this after all the
>bad publicity, but it is a repeatable fact! The SWR was horrid on 15 and
>ten meters though!

Still, 3:1 will shut down most of the solid-state rigs. You'll need a tuner to
make use of the antenna. And if you need a tuner...

73...   Mark    AA7TA


From Unknown Sat Nov 11 06:56:18 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!news.kei.com!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 10 Nov 1995 16:48:54 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 31
Distribution: world
Message-ID: <47vvpm$[e-mail]>
References: <[e-mail]> <47naoh$[e-mail]> <[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <[e-mail]>,
Mark Monninger <[e-mail]> wrote:
>In article <47naoh$[e-mail]> [e-mail] (W8JI  Tom) writes:
>>If you actually measure the feedpoint Z of a G5RV you will see that it is
>>reasonable on several bands.
>
>Still, 3:1 will shut down most of the solid-state rigs. You'll need a tuner to
>make use of the antenna. And if you need a tuner...
>
>73...   Mark    AA7TA

The G5RV was discussed by Bill Orr in the Nov 92 CQ. He compared the
original design to the W6SAI version. Here are the reported results.

Freq.              SWR-original           SWR-W6SAI version
                   102'/26.75' no balun   92.6'/37.25' with balun

3.5-4.0            6.3-5.67               7.68-4.60
7.0-7.3            2.65-4.50              1.72-3.00
10.1               8.50                   8.11
14.00-14.35        1.83-3.28              2.50-1.42
18.11              1.84                   1.11
21.00-21.45        5.90-5.69              4.96-4.70
24.95              4.52                   2.75
28.0-29.7          4.83-1.88              3.38-1.48-2.55

So both you guys are right. It's a reasonable "all-band" antenna
but you will be disappointed unless you use an antenna tuner and
there is almost no broadside radiation above 30m.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Sat Nov 11 06:56:19 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!pipeline!psinntp!psinntp!psinntp!voder!nsc!news
From: "Al Koblinski  (W7XA)" <[e-mail]>
Subject: Re: GAP antennas?
Content-Type: text/plain; charset=us-ascii
Message-ID: <[e-mail]>
Sender: [e-mail] (netnews maintenance)
Nntp-Posting-Host: akoblinski.nsc.com
Content-Transfer-Encoding: 7bit
Organization: National Semiconductor, Santa Clara
References: <[e-mail]> <478o6l$[e-mail]> <[e-mail]>
Mime-Version: 1.0
Date: Sat, 11 Nov 1995 00:49:38 GMT
X-Mailer: Mozilla 1.1N (Macintosh; I; 68K)
X-Url: news:[e-mail]
Lines: 8

My GAP has been an outstanding performer for 3 years.  I have it mounted
on a garage roof, and I mainly chase DX and while it does not compare to
40 meter and 80 meter beams, it is more than competitive with other
dipole and verticals.  I easily QSO Africa, Europe and of course Asia
from California with less than the legal limit power.
73, Al




From Unknown Sat Nov 11 06:56:20 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netcom.com!NewsWatcher!user
From: [e-mail] (Henry Baker)
Subject: Re: Help -- will a buried copper ground wire corrode?
Message-ID: <hbaker-0711952325300001@10.0.2.15>
Sender: [e-mail]
Organization: nil organization
References: <[e-mail]>
Date: Wed, 8 Nov 1995 07:25:30 GMT
Lines: 13

In article <[e-mail]>, [e-mail] (Jeff
Browning) wrote:

> Subject says it all.  I want to bury a couple of hundred feet of
> copper wire for an antenna ground.  Does ordinary copper
> corrode in the ground?

Not if you have it touching something like iron, which will corrode
preferentially.

--
www/ftp directory:
ftp://ftp.netcom.com/pub/hb/hbaker/home.html


From Unknown Sat Nov 11 06:56:21 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.msfc.nasa.gov!bcm.tmc.edu!cs.utexas.edu!uwm.edu!lll-winken.llnl.gov!decwrl!amd!netcomsv!uu4news.netcom.com!netcomsv!uu3news.netcom.com!ix.netcom.com!netcom.com!NewsWatcher!user
From: [e-mail] (Henry Baker)
Subject: Re: Help -- will a buried copper ground wire corrode?
Message-ID: <hbaker-0811950752540001@10.0.2.15>
Sender: [e-mail]
Organization: nil organization
References: <[e-mail]> <hbaker-0711952325300001@10.0.2.15>
Date: Wed, 8 Nov 1995 15:52:54 GMT
Lines: 20

In article <hbaker-0711952325300001@10.0.2.15>, [e-mail] (Henry
Baker) wrote:

> In article <[e-mail]>, [e-mail] (Jeff
> Browning) wrote:
>
> > Subject says it all.  I want to bury a couple of hundred feet of
> > copper wire for an antenna ground.  Does ordinary copper
> > corrode in the ground?
>
> Not if you have it touching something like iron, which will corrode
> preferentially.

The previous owner of my house arranged to protect a cheap brass valve with
about 100' feet of galvanized steel pipe that runs underneath my expensive deck.
;-) ;-)

--
www/ftp directory:
ftp://ftp.netcom.com/pub/hb/hbaker/home.html


From Unknown Sat Nov 11 06:56:23 1995
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!newsserver.jvnc.net!goliath.montclair.edu!rutgers!spcuna!news.wctc.net!chi-news.cic.net!newsfeed.internetmci.com!in2.uu.net!mercury.near.net!noc.near.net!llnews.ll.mit.edu!usenet
From: [e-mail] (John Kaufmann)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help -- will a buried copper ground wire corrode?
Date: Wed, 08 Nov 95 14:23:20 GMT
Organization: M.I.T. Lincoln Laboratory
Lines: 19
Distribution: world
Message-ID: <47qdsf$[e-mail]>
References: <[e-mail]>
X-Newsreader: News Xpress Version 1.0 Beta #2.1

[e-mail] (Jeff Browning) wrote:
>Hi --
>
>Subject says it all.  I want to bury a couple of hundred feet of
>copper wire for an antenna ground.  Does ordinary copper
>corrode in the ground?
>
[. . .]


It is unlikely that copper will be immune to corrosion in the ground.  After all,
copper does oxidize very readily, even in dry air.  Here in New England, where
the soil tends to be acidic, I have found that copper ground rods corrode
severely over a period of a couple of years or so.   I suggest using insulated
wire to retard corrosion.  That's what I do for the 20,000+ feet of ground radials
I have installed.

John Kaufmann W1FV
[e-mail]


From Unknown Sat Nov 11 06:56:23 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Matthew <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,rec.radio.shortwave,uk.radio.amateur
Subject: Help! IC-706 INFO NEEDED!
Date: 8 Nov 1995 14:04:40 GMT
Organization: Black Sheep
Lines: 14
Message-ID: <47qddo$98j$[e-mail]>
Xref: news.epix.net rec.radio.amateur.antenna:16964 rec.radio.amateur.equipment:21226 rec.radio.amateur.misc:94034 rec.radio.shortwave:65793 uk.radio.amateur:9024

Can someone please post some new, constructive info on the 706.
Some people say it's great, some say it isn't.
And some say nothing, of course.
If anyone is in a position to inform me on this matter,
please do so, paying particular attention to the HF performance
out of band.

Cheers, all.

Matt.

PS If I do not hear anything soon, I'm going to buy it anyway, so
please reassure me that I will be doing the right thing. Post now!
HHHHHHHHEEEEEEEELLLLLLLLPPPPPPPP!!!!!!!!


From Unknown Sat Nov 11 06:56:24 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (J Coote)
Newsgroups: rec.radio.amateur.antenna
Subject: Help- want info, mil surplus programs
Date: 8 Nov 1995 07:26:19 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 15
Sender: [e-mail]
Message-ID: <47q7lb$[e-mail]>
Reply-To: [e-mail] (J Coote)
NNTP-Posting-Host: newsbf02.mail.aol.com

Though not exactly antenna related,  I am looking for information on
California State OES, FEMA, DOD or other US government programs which
allocate surplus equipment to bona-fide city RACES, Hamwatch, or other
disaster communications groups.

I am aware of one DOD program which allocates surplus military equipment
to law enforcement, for law enforcement activities only.

Anyone heard of such a program?

Thanks!
Jay  Coote      WB6AAM      (ARCI 5050)





From Unknown Sat Nov 11 06:56:25 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!ncar!noao!math.arizona.edu!news.Arizona.EDU!news.Cerritos.edu!vax.cerritos.edu!dunla004
From: [e-mail] (Terry Dunlap, AC6EF)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help: Gotcha's on roof top towers?
Date: 10 Nov 95 16:19:27 PST
Organization: Cerritos College, Norwalk CA
Lines: 18
Message-ID: <[e-mail]>
References: <47k2e9$[e-mail]>
NNTP-Posting-Host: white.cerritos.edu

In article <47k2e9$[e-mail]>, [e-mail] (PeterJS) writes:
>   <<snip snip>>
>  - Also, if the beam ends up to only 20 feet off the ground, is it really
>     worth the money for the quality of the signals that I will receive
>     and transmit from that height?
>
> Any other tips to a first time beam buyer would be appreciated.
>
> Thanks ... Peter, KE6VMJ

I operated my first year of HF with a Butternut vertical, then put an A3S
up on a 20' push-up on top of my single story house....about 30' total.  Even
at that low height it made a tremendous difference on what I could hear and
work.  I've confirmed over 200 countries with them working barefoot.

73 de Terry AC6EF
[e-mail]



From Unknown Sat Nov 11 06:56:26 1995
Path: news.epix.net!news.sprintlink.net!wizard.pn.com!sundog.tiac.net!daily-planet.execpc.com!spool.mu.edu!olivea!express.ior.com!news
From: [e-mail] (Joe Pfeuffer)
Newsgroups: rec.radio.amateur.antenna
Subject: HF Delta Loop Info Needed
Date: 7 Nov 1995 23:17:09 GMT
Organization: Internet On-Ramp, Inc.
Lines: 4
Message-ID: <47opdl$[e-mail]>
NNTP-Posting-Host: cs2-08.ior.com
Mime-Version: 1.0
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X-Newsreader: WinVN 0.99.5

Want to build 80 / 40 version(s) and any info would be appreciated.

73



From Unknown Sat Nov 11 06:56:27 1995
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From: [e-mail] (Gary McDuffie, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Horizontal Verticals?
Date: Wed, 08 Nov 1995 00:39:06 GMT
Organization: AG0N's Radio Ranch
Lines: 34
Message-ID: <47ou3p$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: 198.206.239.244
X-Newsreader: Forte Agent .99b.112

On Tue, 7 Nov 1995 03:25:35 GMT, [e-mail] (Pete Rossi) wrote:

>Anyone have any experience with mounting 1/4 wave verticals horizontal?
>Say what?

>I was thinking of mounting a 1/4 element horizontal sticking out from the
>side of my tower.  I guess sort of like a 1/4 wave "sloper" except it
>wouldn't slope.  The tower would be the counterpose.

>Any ideas what the pattern of such a beast would be?   The element would
>be about 1/2 wavelength above the ground.

>Of course I suppose I could mount a similar element on the other side
>then I would have dipole.

But the feed would be isolated from the tower, instead of against it.

>Pete

Hi Pete.  Sounds like it would be a good local antenna only.  You didn't say
what band you were thinking of.  Remember, however, that a vertical, whether
it is horizontal or vertical, will radiate best along the counterpoise.  With
it mounted on the side of a tower, it would radiate along the axis of the
tower.  Of course, there would be other radiation, but that's where it would
be conenctrated....up and down.

Some antenna weeny will probably shoot me down on this, but that is how I see
it.  How 'bout it, guys?
 _____                       _____ _____ ___ _____
|   __|___ ___ _ _    ___   |  _  |   __|   |   | |
|  |  | .'|  _| | |  |___|  |     |  |  | | | | | |
|_____|__,|_| |_  |         |__|__|_____|___|_|___|
              |___| [e-mail]



From Unknown Sat Nov 11 06:56:28 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!eskimo!localhost
From: [e-mail] (Bill Turner)
Subject: Re: Horizontal Verticals?
X-Nntp-Posting-Host: tia1.eskimo.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News User Id)
Organization: Eskimo North (206) For-Ever
X-Newsreader: News Xpress Version 1.0 Beta #4
References: <[e-mail]>
Date: Wed, 8 Nov 1995 04:34:42 GMT
Lines: 21

In article <[e-mail]>,
   [e-mail] (Pete Rossi) wrote:
>Anyone have any experience with mounting 1/4 wave verticals horizontal?
>Say what?
>
>I was thinking of mounting a 1/4 element horizontal sticking out from the
>side of my tower.  I guess sort of like a 1/4 wave "sloper" except it
>wouldn't slope.  The tower would be the counterpose.
>
>Any ideas what the pattern of such a beast would be?   The element would
>be about 1/2 wavelength above the ground.
--------------------------------------------------------
The pattern would be a bit bizarre, but I think it would actually work quite
well.  1/2 half wave above ground is good, and most of the radiation would be
horizontally polarized, which is also good.  Try it at various heights on the
tower -- the very top may not necessarily give you the best pattern, depending
on the interaction with your guys, whatever's on top of the tower, etc, etc.


73, Bill W7LZP
[e-mail]


From Unknown Sat Nov 11 06:56:29 1995
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From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Horizontal Verticals?
Date: 9 Nov 1995 04:52:24 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 49
Sender: [e-mail]
Message-ID: <47sj0o$[e-mail]>
References: <47ou3p$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Hi Gary,
Please put on your flak jacket, and prepare to bail out of the
plane.<grin>
In article <47ou3p$[e-mail]>,
[e-mail] (Gary McDuffie, Sr.) writes:

>
>Hi Pete.  Sounds like it would be a good local antenna only.  You didn't
say
>what band you were thinking of.  Remember, however, that a vertical,
whether
>it is horizontal or vertical, will radiate best along the counterpoise.
With
>it mounted on the side of a tower, it would radiate along the axis of the
>tower.  Of course, there would be other radiation, but that's where it
would
>be conenctrated....up and down.

I've heard that before, but always found little truth in it. I remember at
WAAM in Ann Arbor MI an "engineer" cut the radials in one direction (and
removed them) to attempt to lower the signal level in ONLY that direction.
What he suceeded in doing was destabilizing the array, and the pattern
varied wildly with soil moisture. But the FS never dropped in the
direction where the radials were removed!

A vertical's pattern is basicly omni-directional unless very few radials
are used, and the radials carry enough current to actually radiate a
significant signal. Adding radials in one direction will not, as a general
rule, increase the signal in just that direction. It's much more
complicated than that.

The pattern of the horizontal vertical will be as expected for a
horizontal at that height, but the tower will likely radiate also
(vertically polarized). The combo could produce a pretty messy pattern.
The results? Probably unpredictable.

Adding another element on the other side, and divorcing the tower from the
system, would clean it up a bit. The tower (assuming it is small cross
section in terms of WL and has no parallel wires like guylines to
interact) would be virtually invisible to the "dipole".

>Some antenna weeny will probably shoot me down on this, but that is how I
see
>it.  How 'bout it, guys?

Antenna weeny? Hmmmm. I've been refered to as a weeny head by my XYL! I'd
better drop that subject though!

73 Tom


From Unknown Sat Nov 11 06:56:31 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!li.net!bbruhns
From: [e-mail] (Bob Bruhns)
Newsgroups: rec.radio.amateur.antenna
Subject: Horizontal Verticals?
Date: 10 Nov 1995 06:53:20 GMT
Organization: LI Net (Long Island Network)
Lines: 16
Message-ID: <47ust0$[e-mail]>
NNTP-Posting-Host: linet04.li.net
X-Newsreader: TIN [version 1.2 PL2]

  You don't say whether the your tower is taller than 120 feet, or if the
1/4 wave element will stick out from the top of the tower.  However, much
of your antenna will be horizontal, and 120 feet is pretty high for any
ham band.  On 160, that's 1/4 wave, which is excellent for low and high
angle skywave - which is reflecting quite well at night even at this low
sunspot time.  On 80, you are at 1/2 wave, and on 40 you are at 1-wave
height; this will put a null in your high angle skywave, but on 80 your
lower angle signal will be enhanced for good DX.  On 40, you will have
two nulls, one straight up, and the other at medium angles, giving you
lobes at a moderately high angle and at a low angle.  Radiation from the
1/4 wave section will be maximum perpendicular to the wire.

  The tower may simply act as a ground plane, or it may get into the
radiation act and add some vertical component to your pattern.  This may
have the effect of making the pattern somewhat directional, favoring one
or more specific skywave angles and directions.  Try it, and see.


From Unknown Sat Nov 11 06:56:32 1995
Path: news.epix.net!news.sprintlink.net!EU.net!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!sgigate.sgi.com!enews.sgi.com!decwrl!pagesat.net!a3bsrv.nai.net!mgate.arrl.org!news
From: Zack Lau <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How to calculate ant length?
Date: 7 Nov 1995 15:37:47 GMT
Organization: American Radio Relay League
Lines: 46
Message-ID: <47nugb$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: mgate.arrl.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
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To: [e-mail]

[e-mail] Egan, MN (Jon Badger) wrote:
>
>This is probably a redundant question but...
>How do I calculate the correct length for an SWL longwire antenna
>for a given frequency? Is there a standard formula to use? And what
>if I have to truncate the length due to space availability? Also,
>is a longwire better than a small active antenna? Is there such a
>thing as an active longwire antenna? Is it neccessary?

Are you sure you want a long wire antenna?  This gets gain
by introducing sharp nulls in the pattern, so that there
are directions you can't hear very well.  This is often OK
for amateur work--you often aren't too picky about who you
can/can't work, as long as you have good signals with the
stations you do talk with (though *rotatable* directional
antennas are quite popular among those who can afford it)

A short piece of wire might prove to be entirely adequate
for casual SWL work.

A longwire is a bit tricky in that the maximum gain is off
axis--you don't point it at the station you want to hear.
This varies with length, so you want to read about it in
a reference text like the ARRL Handbook.  Also, for best
results you need to optimize the vertical pattern as well.
This isn't too bad with flat terrain, but gets complicated
fast if hills are involved. (Ray tracing/uniform theory of
diffraction)  A study of propagation is needed to figure
out what angles signals arrive at.

Active antennas might actually be a disadvantage if you
are using a modern receiver with plenty of sensitivity but
limited dynamic range.  They might overload, making the
band seem quite crowded with multiple copies of signals.
Even worse, they can quite altogether, resulting in few
signals.

A short active antenna terminates the antenna with a very
high impedance preamplifier to preserve signal
transfer--nothing special is needed to do this with true
longwire.(as defined in the ARRL antenna book)

Zack Lau  KH6CP/1 [e-mail]





From Unknown Sat Nov 11 06:56:33 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!rahul.net!a2i!bug.rahul.net!a2i!genmagic!sgigate.sgi.com!swrinde!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8bce)
Newsgroups: rec.radio.amateur.antenna
Subject: Hygain 204BA Ant
Date: 7 Nov 1995 03:29:15 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 5
Sender: [e-mail]
Message-ID: <47n5cr$[e-mail]>
Reply-To: [e-mail] (W8bce)

Re: experience with the 204BA: I rebuilt an earlier version, used the new
parts kit fr HyGain-added the BN 4000 Balun and used the 2  rod Berta
Match on the driven ele instead of the old single rod system.  The Ant
shows a dead short and about  a 3.5 to 1 swr across the band(20m). Any
suggestions? Tnx  [e-mail]


From Unknown Sat Nov 11 06:56:34 1995
Path: news.epix.net!news.sprintlink.net!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!uwm.edu!chi-news.cic.net!news.compuserve.com!news.production.compuserve.com!news
From: Matthew <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: IC706
Date: 7 Nov 1995 09:32:16 GMT
Organization: Black Sheep
Lines: 4
Message-ID: <47n930$a3k$[e-mail]>
Xref: news.epix.net rec.radio.amateur.antenna:16970 rec.radio.amateur.equipment:21233 rec.radio.amateur.misc:94042 uk.radio.amateur:9027

Quick!
I need first-hand, unbiased advice on the IC706!
I plan to buy it v. soon if I do not hear any stinking reports!
Help!


From Unknown Sat Nov 11 06:56:35 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!netline-fddi.jpl.nasa.gov!nntp-server.caltech.edu!sdd.hp.com!vixen.cso.uiuc.edu!uwm.edu!chi-news.cic.net!newsfeed.internetmci.com!in1.uu.net!news.eng.convex.com!cowart
From: [e-mail] (Michael Cowart)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Followup-To: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Date: 8 Nov 1995 19:35:16 GMT
Organization: Engineering, Convex Computer Corporation, Richardson, Tx USA
Lines: 22
Message-ID: <47r0pk$[e-mail]>
References: <47n930$a3k$[e-mail]>
NNTP-Posting-Host: neptune.convex.com
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Xref: news.epix.net rec.radio.amateur.antenna:16976 rec.radio.amateur.equipment:21242 rec.radio.amateur.misc:94049 uk.radio.amateur:9029

Matthew ([e-mail]) wrote:
: Quick!
: I need first-hand, unbiased advice on the IC706!
: I plan to buy it v. soon if I do not hear any stinking reports!
: Help!

it's hard to get unbiased advice :)  by definition, any advice is
biased.

I have had a 706 four days and like it very much.  it gives you a
lot of bands and modes for a relatively small amount of dollars.
makes a great mobile rig, that's how I use mine.

my advice: get one before the price goes up!

73
Mike

-----------------------------------------------------------------
Mike Cowart  e-mail: [e-mail]      Convex Computer Corp.
My opinions are mine, not my employer's.    Richardson, Texas
-----------------------------------------------------------------


From Unknown Sat Nov 11 06:56:36 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!news.uoregon.edu!usenet.eel.ufl.edu!newsfeed.internetmci.com!news.kei.com!eff!blanket.mitre.org!linus.mitre.org!news.mitre.org!m14494-mac.mitre.org!user
From: [e-mail] (Michael White)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: Wed, 08 Nov 1995 15:39:10 -0500
Organization: The MITRE Corporation
Lines: 25
Message-ID: <[e-mail]>
References: <47n930$a3k$[e-mail]>
NNTP-Posting-Host: m14494-mac.mitre.org
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Matthew wrote:

> Quick!
> I need first-hand, unbiased advice on the IC706!
> I plan to buy it v. soon if I do not hear any stinking reports!
> Help!

A friend of mine got one, and I've used it quite a lot. It's great; we
both love it. There are some minor things we'd change if we were designing
it, but certainly no show-stoppers. This friend of mine is very, very
pickey about such things, and he's quite pleased with the 706. Just
remember that it only has 10 watts out on 2 meters, and there is no DTMF
keypad. It's really meant to be a 2 meter all-mode, not a general purpose
mobile rig for chatting on the repeater. It will do that fine, it's just
set up more like an all-mode.

Now, if I could just convince my wife that the 706 is more important the
the kid's braces...

Mike, N4PDY

--
[e-mail]

My opinions are my own, not my employer's.


From Unknown Sat Nov 11 06:56:37 1995
Path: news.epix.net!news.sprintlink.net!dns.crocker.com!wizard.pn.com!sundog.tiac.net!daily-planet.execpc.com!usenet
From: Thomas  Brockdorf <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: 9 Nov 1995 17:20:58 GMT
Organization: Exec-PC BBS - Milwaukee, WI
Lines: 31
Message-ID: <47td9r$[e-mail]>
References: <47n930$a3k$[e-mail]>
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Xref: news.epix.net rec.radio.amateur.antenna:16995 rec.radio.amateur.equipment:21275 rec.radio.amateur.misc:94087 uk.radio.amateur:9060

Matthew <[e-mail]> wrote:
>Quick!
>I need first-hand, unbiased advice on the IC706!
>I plan to buy it v. soon if I do not hear any stinking reports!
>Help!

Mathew,
Don't be worried about buying the 706. It is an excellent radio!
I got mine last week, and I love it.
I have two comments.
I thought I had a transmit audio problem, but I played around
with the settings, and found this not to be true.
The only thing I would change on this radio if I could, would be
the fan. It runs all the time, and speeds up when you transmit. I
would rather see it temperature controlled, like my Icom 751A. I
think however, that it may have to be like it is in order to
maintain the small size of the radio, without large heat-sinks.
It is about the same noise level as a computer fan. Really not a
major problem though.
This radio has many great software features, and with 6M and 2M
all mode, it is like getting three radios in one.
Recieve audio is quite clear, I don,t detect any distortion (by
ear), like some of the other HF radios that have recently come
out.
Reciever sensitivity seems to be very good. On two meter FM, it
is better than my FM mobile rig (with the preamp on). HF also
very good.

73 de Thomas AA9IS




From Unknown Sat Nov 11 06:56:38 1995
Path: news.epix.net!news.sprintlink.net!holonet!colossus.holonet.net!yama.mcc.ac.uk!warwick!tank.news.pipex.net!pipex!lyra.csx.cam.ac.uk!sunsite.doc.ic.ac.uk!dispatch.news.demon.net!demon!qmw!ciril.fr!jussieu.fr!math.ohio-state.edu!howland.reston.ans.net!newsfeed.internetmci.com!EU.net!news.eunet.fi!jjo
From: [e-mail] (Jari Jokiniemi)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: 10 Nov 1995 06:12:21 GMT
Lines: 13
Message-ID: <[e-mail]>
References: <47n930$a3k$[e-mail]>
        <[e-mail]>
        <[e-mail]>
NNTP-Posting-Host: ds10.tekla.fi
In-reply-to: [e-mail]'s message of Thu, 9 Nov 1995 18:18:11 GMT
Xref: news.epix.net rec.radio.amateur.antenna:17008 rec.radio.amateur.equipment:21295 rec.radio.amateur.misc:94117 uk.radio.amateur:9070

I would slightly disagree on IC-706 being really that good. The SSB
filters are poor. The radio gets into trouble when trying to
dig a DX under a pile-up or when running a contest. Also the front end
does not seem to behave well when someone is running a KW nearby, so
multi-multi operations using IC-706's are out of the question. To be
fair, the other small radio I've ever tried (TS-50) behaved just the
same way. I would say that the new Icom is a good deal for the common
operator, it is also very handy radio for a one man DX
pedition. DX hunters and those runninng contests should consider other
radios (did I say a second-hand IC-735).
--
Jari Jokiniemi, [e-mail], OH2MPO, OH3BU
Tekla Oy, Koronakatu 1, 02210 Espoo, 90-8879 474


From Unknown Sat Nov 11 06:56:40 1995
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!bloom-beacon.mit.edu!yama.mcc.ac.uk!warwick!tank.news.pipex.net!pipex!dish.news.pipex.net!pipex!lade.news.pipex.net!pipex!europa.chnt.gtegsc.com!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!gatech2!pirates!cssun.mathcs.emory.edu!wa4mei!ke4zv!gary
From: [e-mail] (Gary Coffman)
Subject: Re: IC706
Message-ID: <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
Organization: Destructive Testing Systems
References: <47n930$a3k$[e-mail]> <[e-mail]> <[e-mail]> <[e-mail]>
Date: Fri, 10 Nov 1995 14:43:31 GMT
Lines: 48
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In article <[e-mail]> [e-mail] (Jari Jokiniemi) writes:
>I would slightly disagree on IC-706 being really that good. The SSB
>filters are poor. The radio gets into trouble when trying to
>dig a DX under a pile-up or when running a contest. Also the front end
>does not seem to behave well when someone is running a KW nearby, so
>multi-multi operations using IC-706's are out of the question. To be
>fair, the other small radio I've ever tried (TS-50) behaved just the
>same way. I would say that the new Icom is a good deal for the common
>operator, it is also very handy radio for a one man DX
>pedition. DX hunters and those runninng contests should consider other
>radios (did I say a second-hand IC-735).

You're right, the 706 is no 735. I've been operating the two side
by side for a few days now. The 735 has better dynamic range, better
filters, and has PBT to let you tailor the filter bandwidth to suit
the signal you are copying. But you can upgrade the 706 filters,
the dynamic range problem is somewhat manageable with artful use of
the preamp and attenuator, and the radio is more convienent to
operate than the 735, and certainly easier to use mobile. All the
mods for this radio so far have been to improve out-of-band performance,
but when the schematics are finally available, I hope some mods will
be forthcoming to enhance its dynamic range. That's the *real*
drawback to this otherwise excellent little radio. (For mobile use,
which seems the primary niche for this radio, the lack of dynamic
range isn't as much of a problem because the antennas are inherently
narrow banded and have limited sensitivity. So dealing with huge
signals out of band isn't as much of a problem.)

With the optional 500 Hz filter, this little radio is a digital
operator's dream. Everything you need is brought out the back,
and the slow tuning is a godsend compared to the coarse and
quick tuning of the 735. Even tuning a Clover signal is a
piece of cake. You don't have to hold your breath while
nudging the knob like you do with the 735. And of course
having 6m and 2m allows you to do meteor scatter packet on
6m and regular terrestrial packet on 2m. I haven't tried
9600 baud yet (we don't use 9600 on 2m around here) but
I'm going to do some experiments this weekend to see what
the BER looks like. With a 70cm transverter, the radio
even does an acceptable job with amateur satellites, though
lack of full duplex capability is a limitation.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | emory!kd4nc!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | [e-mail]
Lawrenceville, GA 30244     |                     |


From Unknown Sat Nov 11 06:56:41 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!europa.chnt.gtegsc.com!news.msfc.nasa.gov!bcm.tmc.edu!cs.utexas.edu!howland.reston.ans.net!torn!news.ccs.queensu.ca!news.rmc.ca!goyette
From: [e-mail] (goyette)
Newsgroups: rec.radio.amateur.antenna
Subject: Impedance Matching Problem- Help!
Date: 9 Nov 1995 03:02:58 GMT
Organization: Royal Military College
Lines: 50
Message-ID: <47rr12$[e-mail]>
NNTP-Posting-Host: goyette.anx.rmc.ca
X-Newsreader: News Xpress Version 1.0 Beta #3

Hi:

I'm new to DXing and I got a beginner's short wave radio.  Now I want to begin
playing with antenna designs to optimize my signal in a given space.  To that
end, here is my problem:

I spotted a 40 Meter Loop antenna design in the "Circuit Circus" column of the
November 95 Popular Electronics Magazine.  It is constructed of 95 inches of
1/4 inch copper tubing formed into a loop of 30 inch diameter with a one inch
gap at the bottom.  The terminals are connected to a transformer made of 4
turns of 18-gauge enameled copper (primary) and 12 turns of 20-gauge enameled
copper (secondary) on a  T50-2 toroid core.  There is a variable capacitor
between the one terminal of the antenna and the primary of the inductor.

I understand the role of the capacitor - to tune the antenna to a desired
resonating frequency.  I think I understand the transformer - it acts as a
matching balun that matches the antenna impedance to the line impedance while
at the same time going from a balanced circuit to and unbalanced one.

To verify, I pulled out some books and found a few formulas.  Assuming the
loop is small compared to the wavelength (diameter<<wavelength), then:

Rt=Rr+Rl (assuming the loop's inductive reactance is balanced by the
capacitor, Rr=radiation resistance, Rl=ohmic loss).

I calculated Rr using

Rr=197*Cw^4 (Cw=circumference/wavelength)
Rr=.0025

I calculated Rl using

Rl=Rr*3430/(C^3*f^3.5*d) (C=circumference of loop in meters, f=frequency in
Megahertz, and d=conductor diameter in meters)
Rl=.0856

Rt=.088 ohms

I used the ideal transformer relation (Np/Ns)^2=Zp/Zs to find that
Zs=9Zp=9*.088=.792 ohms.

This does not make sense.  It almost seems that I am out by a factor of 100 if
the cable to be matched is 75 ohms (and I'm not sure it is cause it wasn't
mentioned in the article).  Can anyone see the flaw in the calculation or
logic?  Is there a better way?

Any help is appreciated.

Rich Goyette
[e-mail]


From Unknown Sat Nov 11 06:56:43 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!simtel!swidir.switch.ch!scsing.switch.ch!news.belwue.de!news.uni-ulm.de!rz.uni-karlsruhe.de!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Impedance Matching Problem- Help!
Date: 9 Nov 1995 12:33:58 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 29
Message-ID: <47ssfm$[e-mail]>
References: <47rr12$[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de

>I spotted a 40 Meter Loop antenna design in the "Circuit Circus" column
>of the November 95 Popular Electronics Magazine.

If I understand ig corectly the loop, the 4 turn transformer winding and
the capacitor are all in series.

>Rt=Rr+Rl (assuming the loop's inductive reactance is balanced by the
>capacitor, Rr=radiation resistance, Rl=ohmic loss).

fair enough.

>Rr=197*Cw^4 (Cw=circumference/wavelength)
>Rr=.0025

OK.

>Rl=Rr*3430/(C^3*f^3.5*d) (C=circumference of loop in meters, f=frequency in
>Megahertz, and d=conductor diameter in meters)
>Rl=.0856

No. You forget that the transformer winding + core losses are part of the
deal. so the antenna will "work" because Rl becomes high enough.

May be you should adhere to the well proven method of matching with a
small air loop inside your antenna loop.

73, Moritz DL5UH




From Unknown Sat Nov 11 06:56:45 1995
Path: news.epix.net!news.sprintlink.net!hookup!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!tank.news.pipex.net!pipex!newsfeed.internetmci.com!in2.uu.net!wb3ffv!news.cais.net!zippy.cais.net!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Impedance Matching Problem- Help!
Date: 9 Nov 1995 18:46:57 GMT
Organization: Capital Area Internet Service [e-mail] 703-448-4470
Lines: 57
Message-ID: <47tib1$[e-mail]>
References: <47rr12$[e-mail]>
NNTP-Posting-Host: ppp07.erols.com
X-Newsreader: SPRY News 3.03 (SPRY, Inc.)

>   [e-mail] (goyette) writes:
>  Hi:
>
>  I'm new to DXing and I got a beginner's short wave radio.  Now I want to begin
>  playing with antenna designs to optimize my signal in a given space.  To that
>  end, here is my problem:
>
>  I spotted a 40 Meter Loop antenna design in the "Circuit Circus" column of the
>  November 95 Popular Electronics Magazine.  It is constructed of 95 inches of
>  1/4 inch copper tubing formed into a loop of 30 inch diameter with a one inch
>  gap at the bottom.  The terminals are connected to a transformer made of 4
>  turns of 18-gauge enameled copper (primary) and 12 turns of 20-gauge enameled
>  copper (secondary) on a  T50-2 toroid core.  There is a variable capacitor
>  between the one terminal of the antenna and the primary of the inductor.
>
>  I understand the role of the capacitor - to tune the antenna to a desired
>  resonating frequency.  I think I understand the transformer - it acts as a
>  matching balun that matches the antenna impedance to the line impedance while
>  at the same time going from a balanced circuit to and unbalanced one.
>
>  To verify, I pulled out some books and found a few formulas.  Assuming the
>  loop is small compared to the wavelength (diameter<<wavelength), then:
>
>  Rt=Rr+Rl (assuming the loop's inductive reactance is balanced by the
>  capacitor, Rr=radiation resistance, Rl=ohmic loss).
>
>  I calculated Rr using
>
>  Rr=197*Cw^4 (Cw=circumference/wavelength)
>  Rr=.0025
>
>  I calculated Rl using
>
>  Rl=Rr*3430/(C^3*f^3.5*d) (C=circumference of loop in meters, f=frequency in
>  Megahertz, and d=conductor diameter in meters)
>  Rl=.0856
>
>  Rt=.088 ohms
>
>  I used the ideal transformer relation (Np/Ns)^2=Zp/Zs to find that
>  Zs=9Zp=9*.088=.792 ohms.
>
>  This does not make sense.  It almost seems that I am out by a factor of 100 if
>  the cable to be matched is 75 ohms (and I'm not sure it is cause it wasn't
>  mentioned in the article).  Can anyone see the flaw in the calculation or
>  logic?  Is there a better way?
>
>  Any help is appreciated.
>
>  Rich Goyette
>  [e-mail]
>
>>>>
Your approach sounds good down to the xformer ratio.  I agree this does not sound correct.
 suggest you check ARRL Antenna manual. This has considerable data on loop antennas.

73/Jim/AC4CZ


From Unknown Sat Nov 11 06:56:48 1995
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.inc.net!news.sol.net!spool.mu.edu!usenet.eel.ufl.edu!agis!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!howland.reston.ans.net!ix.netcom.com!netcom.com!charles1
From: [e-mail] (charles copeland)
Subject: J POLE ANTENNA PLANS
Message-ID: <[e-mail]>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
Date: Thu, 9 Nov 1995 21:08:59 GMT
Lines: 125
Sender: [e-mail]
Xref: news.epix.net rec.radio.amateur.equipment:21286 rec.radio.amateur.antenna:17004


From: N6DCD@KB7WE.#WWA.WA.USA.NOAM (packet)

                      THE "WATER PIPE" J-POLE ANTENNA
                          for UHF-VHF frequencies




             ╔══╗                           P A R T S    L I S T
     ─────── ╠══╣                     ┌───┬──────────────────────────────┐
      │      ║░░║                     │QTY│       NOMENCLATURE           │
      │      ║░░║                     ├───┼──────────────────────────────┤
      │      ║░░║                     │ 1 │  length W x 1/2" copper pipe │
      │      ║░░║                     ├───┼──────────────────────────────┤
      │      ║░░║                     │ 1 │  length X x 1/2" copper pipe │
      │      ║░░║                     ├───┼──────────────────────────────┤
      │      ║░░║                     │ 1 │  length Y x 1/2" copper pipe │
      │      ║░░║        Detail       ├───┼──────────────────────────────┤
      │      ║░░║          A          │ 1 │  length Z x 1/2" copper pipe │
      X      ║░░║         ╔══╗        ├───┼──────────────────────────────┤
      │      ║░░║         ╠══╣ ─────  │ 1 │  elbow, 1/2" copper          │
      │      ║░░║         ║░░║    │   ├───┼──────────────────────────────┤
      │      ║░░║         ║░░║    │   │ 1 │  tee, 1/2" copper            │
      │      ║░░║         ║░░║    │   ├───┼──────────────────────────────┤
      │  ─┬─ ╟──╨┬┐     ┌┬╨──╢─── │   │ 2 │  pipe hanger, copper (#1)    │
      │   │  ╟──╥┴┘     └┴╥──╢ │  Y   ├───┼──────────────────────────────┤
      │   V  ║░░║         ║░░║ U  │   │ 3 │  cap, end, copper            │
      │   │  ║░░║         ║░░║ │  │   ├───┼──────────────────────────────┤
      │  ─┴─ ╠══╣         ╠══╣─── │   │ 1 │  screw, brass, 6-32 x 1/2"   │
      │      ║░░╚╦═══════╦╝░░║    │   ├───┼──────────────────────────────┤
     ─────── ║░░░║░░░░░░░║░░░║ ─────  │ 1 │  nut, brass, 6-32            │
      │      ║░░╔╩═══════╩═══╝        ├───┼──────────────────────────────┤
      │      ╠══╣                     │as │  miscellaneous tools, torch, │
      │      ║░░║│<─ W ─>│            │req│  solder, coax cable, etc.    │
      │      ║░░║                     └───┴──────────────────────────────┘
      │      ║░░║                      (#1) Hose clamps or plastic tie-
      │      ║░░║                           wraps may be substituted.
      Z      ║░░║
      │      ║░░║
      │      ║░░║
      │      ║░░║              DETAIL  A
      │      ║░░║                ┌──┐
      │      ║░░║                └┐┌┘  6-32 trimmer
     ─────── ╠══╣                 ├┤    adjustment
             ╚══╝                 ├┤
                                  └┘
                           ╔══════════════╗
                           ║  ┌────────┐  ║  Nut soldered inside cap
                           ║  └──NUT───┘  ║  after hole is drilled in
                           ║              ║  cap for adjusting screw

          ┌──────┬──────┬──────┬──────┬──────┬──────┐
 Frequency│  W   │  X   │  Y   │  Z   │  U   │  V   │  Dimension Chart
┌─────────┼──────┼──────┼──────┼──────┼──────┼──────┤
│146 Mhz  │ 1.0" │ 40.5"│20.25"│  30" │ 2.0" │ 2.0" │  for calculations
├─────────┼──────┼──────┼──────┼──────┼──────┼──────┤  of 1/2 wave ant.
│220 Mhz  │ .75" │ 26.5"│13.25"│  20" │ 1.25"│ 1.25"│
├─────────┼──────┼──────┼──────┼──────┼──────┼──────┤
│440 Mhz  │ 3/8" │ 13.5"│ 6.75"│  10" │ .75" │ .75" │
├─────────┼──────┼──────┼──────┼──────┼──────┼──────┤
│Formula  │ .5"  │  492 │  X   │  at  │  1"  │  1"  │
│         │ per  │ ---- │  -   │ least│ per  │ per  │
│         │meter │ Fmhz │  2   │  1/4 │ meter│ meter│
│    ┌────┘ of   │      │      │wavel.│  of  │  of  │
│    │ wavelength│      │      │      │wavel.│wavel.│
└────┴───────────┴──────┴──────┴──────┴──────┴──────┘



                      THE "WATER PIPE" J-POLE ANTENNA
                          for UHF-VHF frequencies

ASSEMBLY:    Assemble as shown in diagram

1.  USING DETAIL A : Drill a hole in the top of the cup slightly larger
than the 6-32 screw.  Solder the nut inside the cap, checking alignment
so that the screw can be turned in/out (up/down) for SWR trimming.

2.  To maintain portability, install a PL-259 on the end of a 4-foot piece
of RG-58 coax. On the other end, strip approximately 2 inches of braid
back from the center conductor. Bare about 1/2 inch of the center conductor.

3.  Temporarily attach the center conductor to the pipe at dimension U,
using the hanger (or clamp). Temporarily attach the shield to the pipe at
dimension V.   Center the tuning adjuster.

4.  Tune for lowest SWR by moving the braid and conductor up and down the
pipe. When lowest SWR is obtained, mark the pipe and drill two small holes
at those locations. Using a center punch, dimple those holes inward. This
gives a tapered hole for self-tapping screws.

5.  Secure the center conductor and the braid to the pipes, using a self-
tapping screw in the dimpled holes. Solder them to the pipe.

6.  Clean and paint the antenna if desired. White paint minimizes expansion
and contraction.

7.  Route the coax and tape it to the mast to make it look neat.

8.  When (as close as possible) you have the antenna in it's proper place,
adjust the VSWR as close to 1.1:1 as possible, using the adjusting screw.

NOTE:  While theoretically a J-Pole is an omnidirectional antenna, You may
find (many of us have) that it does have a small amount of directivity.
Rotating it while checking field strength may prove interesting.


          ┌──────┬──────┬──────┬──────┬──────┬──────┐
 Frequency│  W   │  X   │  Y   │  Z   │  U   │  V   │  Dimension Chart
┌─────────┼──────┼──────┼──────┼──────┼──────┼──────┤
│146 Mhz  │ 2.0" │  58" │ 19.5"│ 42.5"│ 2.0" │ 2.0" │  for calculations
├─────────┼──────┼──────┼──────┼──────┼──────┼──────┤  of 3/4 wave ant.
│220 Mhz  │ 1.25"│  38" │  13" │  25" │ 1.25"│ 1.25"│
├─────────┼──────┼──────┼──────┼──────┼──────┼──────┤
│440 Mhz  │ .75" │  19" │ 6.5" │  13" │ .75" │ .75" │
├─────────┼──────┼──────┼──────┼──────┼──────┼──────┤
│Formula  │  1"  │  3/4 │  1/4 │  at  │  1"  │  1"  │
│         │ per  │  of  │  of  │ least│ per  │ per  │
│         │meter │wavel.│wavel.│  1/4 │ meter│ meter│
│    ┌────┘ of   │      │      │wavel.│  of  │  of  │
│    │ wavelength│      │      │      │wavel.│wavel.│
└────┴───────────┴──────┴──────┴──────┴──────┴──────┘




From Unknown Sat Nov 11 06:56:49 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!swidir.switch.ch!scsing.switch.ch!news.belwue.de!news.uni-ulm.de!rz.uni-karlsruhe.de!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Subject: Re: J POLE ANTENNA PLANS
Date: 10 Nov 1995 11:48:41 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 38
Message-ID: <47ve6p$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de
Xref: news.epix.net rec.radio.amateur.equipment:21302 rec.radio.amateur.antenna:17020

In article <[e-mail]>,
charles copeland <[e-mail]> wrote:

Hello,

This is a very detailed description, which will surely inspire
many newcommers to build their own antenna. But particularily
for this reason, the shortcommings should be pointed out:

Although copper tubing is quite cheap, when you add up the
price for all the bits...

Not to speak of the additional material needed to weatherproof the
upen coax feed.
(a gp from simple stiff copper wire on a coax socket and plug is
better in this respect)

>6.  Clean and paint the antenna if desired. White paint minimizes expansion
>and contraction.

Well, the author seems to believe that thermal expansion matters
for such an antenna. It is not.

>7.  Route the coax and tape it to the mast to make it look neat.

He does not realize that the feed line can interact wit the stub,
and therefore it should be brought out at a right angle.

>NOTE:  While theoretically a J-Pole is an omnidirectional antenna, You may
>find (many of us have) that it does have a small amount of directivity.
>Rotating it while checking field strength may prove interesting.

Theoretically the J-Pole is an antenna which requires a *symmetric*
feed. Using it without a balun does create problems, although not always
noticed.

73, Moritz DL5UH



From Unknown Sat Nov 11 06:56:50 1995
Path: news.epix.net!news.sprintlink.net!x15.pilot.net!news-out.internetmci.com!newsfeed.internetmci.com!news.flinet.com!news1.inlink.com!usenet
From: [e-mail] (Gary V. Deutschmann, Sr.)
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Subject: Re: J POLE ANTENNA Questions
Date: Fri, 10 Nov 1995 15:09:50 GMT
Organization: Inlink
Lines: 32
Message-ID: <47vpon$[e-mail]>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: slip25.inlink.com
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.radio.amateur.equipment:21300 rec.radio.amateur.antenna:17014

[e-mail] (charles copeland) wrote:

>In article <[e-mail]>,
>charles copeland <[e-mail]> wrote:
>>
>>From: N6DCD@KB7WE.#WWA.WA.USA.NOAM (packet)

>I have two questions about making a J pole.

>1) The plans show that the entire J is made of copper with
>no insulating material between the two legs. The antenna
>connects between the two legs. Wouldn't this short out
>the transmitter?

At DC YES,
But at VHF/UHF Frequencies, anything below the connect point is
invisible to the radio.
Many dipoles use a shorted tuning stub even on HF antennas!

>2) How does a J pole rate with other antennas? 1/4 wave ground plane?

A standard J-Pole is a single 1/2 wavelength element, or twice that of
a 1/4 wavelength antenna.  A STACKED J-Pole are two 1/2 wavelength
antennas in phase, or four times that of a 1/4 wavelength antenna.  A
MIRROR Image J-Pole is effectually three 1/2 wavelengths long or six
times a 1/4 wavelength antenna.

Gary - KG0ZP






From Unknown Sat Nov 11 06:56:51 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (N2WKS)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Log Periodic Antenna
Date: 7 Nov 1995 04:10:43 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 6
Sender: [e-mail]
Message-ID: <47n7qj$[e-mail]>
References: <46jqfm$[e-mail]>
Reply-To: [e-mail] (N2WKS)
NNTP-Posting-Host: newsbf02.mail.aol.com

there is a review of a cushcraft log periodic antenna in October? CQ
magazine.

hope this helps

Zev N2WKS


From Unknown Sat Nov 11 06:56:52 1995
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Looking for thin 50 O
From: [e-mail] (Chris Smart)
Path: news.epix.net!news.sprintlink.net!news.clark.net!europa.chnt.gtegsc.com!news.umbc.edu!haven.umd.edu!purdue!lerc.nasa.gov!magnus.acs.ohio-state.edu!math.ohio-state.edu!howland.reston.ans.net!newsfeed.internetmci.com!news.bctel.net!news.cyberstore.ca!van-bc!fonorola!news.crso.com!canrem.com!chris.smart
Distribution: world
Message-ID: <[e-mail]>
References: <[e-mail]>
Date: Wed,  8 Nov 95 21:44:00 -0500
Organization: CRS Online  (Toronto, Ontario)
Lines: 31

Do what thou wilt shall be the whole of the Law.

-----BEGIN PGP SIGNED MESSAGE-----


 Wa> so the resistance gets higher).  The only real way to cut this loss
 Wa> down is to use a thicker center conductor, which in turn makes for
 Wa> thicker coax (because of the above mentioned ratio).  Silver plating
 Wa> helps but not that much.

I'm currently using 75 feet of 213U coax to my 2m beem, but plan on moving
up to 440 MHZ.  Is this coax good enough to ensure that a large amount of
signal from my HT will get to a 440 mhz antenna once I get it up there?
This cable is about as big as I want to have to deal with.

.. Love is the law, love under will.
___ Blue Wave/QWK v2.12

-----BEGIN PGP SIGNATURE-----
Version: 2.6

iQCVAgUBMKFqONZU0fzBPqHhAQGW6QQAvWIzZpHIh620/hYC8vEzuwDkEXL9W61J
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bffpqvNMC2+7bxCHhPe7/t+5Vyb1GB4Y4xKy171PRc32kPHAit3oFwUThxOjy56A
1YXyOD4/uWg=
=5pcW
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PGP 2.6 public key available upon request!



From Unknown Sat Nov 11 06:56:53 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!bcm.tmc.edu!news.msfc.nasa.gov!newsfeed.internetmci.com!news.kei.com!news.ece.uc.edu!babbage.ece.uc.edu!news.gryffin.com!chi-news.cic.net!io.org!news.interlog.com!winternet.com!uunet!in1.uu.net!iglou!n4lq
From: Steve Ellington <[e-mail]>
Subject: Re: Low Beam Question
In-Reply-To: <[e-mail]>
X-Sender: n4lq@iglou
X-Nntp-Posting-Host: iglou.iglou.com
Content-Type: TEXT/PLAIN; charset=US-ASCII
Message-ID: <Pine.SOL.3.91.951108210337.5484B-100000@iglou>
Sender: [e-mail] (News Administrator)
Organization: IgLou Internet Services (1-800-436-4456)
References: <[e-mail]>
Mime-Version: 1.0
Date: Thu, 9 Nov 1995 02:05:19 GMT
Lines: 18

> : I did a quick EZNEC analysis, while online, of a two element yagi at 45'
> : I didn't optimize the antenna, just took off the director on the 3el NBS
> : Yagi. Using the high accuracy "good" ground model, the gain is max at 47 deg
> : elevation. The gain is 7.75 dBi with a 4.5 dB FB and 3 dB beamwidth of 84 deg.
>
> : A dipole at the same height, ground, etc. has 5.73 dBi gain at 47 deg and
> : of course no FB ratio. So, you get 2 dB gain and 4.5 dB FB improvement for
> : your efforts :-(


Can you explain why the gain seems to be at 47 degrees instead of 90
degrees as all the charts show. Seems to me that an 80m dipole at 45 feet
would max out at 90 degrees.



Steve Ellington [e-mail]  Louisville, Ky



From Unknown Sat Nov 11 06:56:54 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!rahul.net!a2i!bug.rahul.net!a2i!infoseek.com!uunet!in2.uu.net!sparky!nlcnews.nlc.state.ne.us!usenet
From: [e-mail] (Gary McDuffie, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Low Beam Question-Related <Q>?
Date: Fri, 10 Nov 1995 16:37:59 GMT
Organization: AG0N's Radio Ranch
Lines: 37
Message-ID: <47vv1s$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: 198.206.239.243
X-Newsreader: Forte Agent .99b.112

No responses yet, so here goes a second time...

On Fri, 3 Nov 1995 21:05:24 GMT, [e-mail] (Steve Ellington)
wrote:


~~~ several deleted...

>7. Let's say I want to beam my signal using 80 meters to a location
>   only 500 mile away. How can I direct it at such a high angle?
>   and minimize ground losses.

In a related question...

I'm assuming :) that the "cloud warmer" characteristics of a horizontal loop
operated at the design frequency would be approximated by the popular
reflector-under-the-dipole method of localizing the coverage of a simple
dipole.

A) Is this true?  i.e. is the angle the same?

B) With the estimated 500-600 mile local coverage umbrella provided by the
loop, would it be the same with the dipole/reflector arrangement?  It seems
like it should be, but is it?  Or, is the loop more concentrated?

C) If you wanted to tilt the range to 700-1000 miles in a given direction,
would the offset angle of the dipole-reflector arrangement be the same as the
angle you would tilt a horizontal loop?

D) How many degrees offset (tilt) would you use to accomplish this and how do
you calculate it?
 _____                       _____ _____ ___ _____
|   __|___ ___ _ _    ___   |  _  |   __|   |   | |
|  |  | .'|  _| | |  |___|  |     |  |  | | | | | |
|_____|__,|_| |_  |         |__|__|_____|___|_|___|
              |___| [e-mail]



From Unknown Sat Nov 11 06:56:55 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!btnet!dispatch.news.demon.net!demon!mail2news.demon.co.uk!ptpropn.demon.co.uk
From: Philips Telecom <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Mark Carlson WRU ?
Date: Thu, 09 Nov 95 11:30:27 GMT
Organization: Myorganisation
Lines: 10
Message-ID: <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: ptpropn.demon.co.uk
X-Newsreader: Demon Internet Simple News v1.29

I am posting this to see if Mark Carlson reads this newsgroup.
Don't have the call to hand, mebbe KD0RL, in Colorado Springs.

If u do Mark, eMail me direct!

73 Fred G4BWP
--
at work at
Philips Telecom - Propagation Group


From Unknown Sat Nov 11 06:56:56 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!eskimo!localhost
From: [e-mail] (Bill Turner)
Subject: Re: Maximizing vertical antenna performance
X-Nntp-Posting-Host: tia1.eskimo.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News User Id)
Organization: Eskimo North (206) For-Ever
X-Newsreader: News Xpress Version 1.0 Beta #4
References: <47lq23$[e-mail]>
Date: Wed, 8 Nov 1995 04:28:21 GMT
Lines: 29

In article <47lq23$[e-mail]>,
   [e-mail] wrote:
>Does anyone know how efficient vertical antennas become in
>their various configurations, e.g. ground-mounted with
>buried radials; above ground with tuned 1/4 wave radials;
>and with commercial "x-within-a-square" counterpoise?  I'm
>not pleased with the performance of my ground-mounted
>Butternut HF6V with 4 buried radials and I hope to enter
>the fabled world of DX by means of a rooftop mount, either
>using a counterpoise frame or stub tuned radials.  If
>counterpoises are not efficient I would gladly go with
>tuned radials...whatever will get me out there...thanks.
>--Bill KB8USZ  [e-mail]
---------------------------------------------------------------
If you're serious about wanting to work DX, get rid of the vertical and put up
something with horizontal polarization.  A beam is preferred of course, but a
horizontal dipole or inverted vee will outperform a vertical in nearly all
cases.  The only exception is when the vertical is over exceptionally good
conducting ground such as salt water or a salt marsh.  Then it may actually
have an edge.  The reason for this is that verticals do not get the "ground
reflection gain" that horizontals do.  Any recent edition of the ARRL
antenna book has a good discussion of this phenomenon.

You may have heard the old saying "a vertical antenna radiates equally poorly
in all directions".  It's not just a cute saying... it's (usually) the truth.


73, Bill W7LZP
[e-mail]


From Unknown Sat Nov 11 06:56:58 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!swidir.switch.ch!scsing.switch.ch!news.belwue.de!news.uni-ulm.de!rz.uni-karlsruhe.de!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Maximizing vertical antenna performance
Date: 8 Nov 1995 11:23:33 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 26
Message-ID: <47q3vl$[e-mail]>
References: <47lq23$[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de

>Does anyone know how efficient vertical antennas become in
>their various configurations, e.g. ground-mounted with
>buried radials; above ground with tuned 1/4 wave radials;

Hi Bill,

There are two systems of radials that will give optimum performance:
4 or so elevated (1/4 wl up) radials, tuned to 1/4 wl
(dubbing as 3/4 on shorter bands)
and a very large number (100 or so) ground mounted radials, not resonant
but about 1/4 wl long for the lowest band.

Now this is often not practical, but 20 or so ground mounted radials
1/8 wl long should also be 70% efficient.

Some people say, that 4  radials 1/4 wl long and 1/10 wl up work as
well as 100 ground mounted radials, but that is a matter of debate.

Anyway, 4 buried radials is far less than optimum, but no matter
how well your ground plane is, the DX performance will be largely
determined by ground conductivity :-(

73, Moritz DL5UH





From Unknown Sat Nov 11 06:56:59 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!uwm.edu!news.moneng.mei.com!daily-planet.execpc.com!usenet
From: Thomas  Brockdorf <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: mobile antenna
Date: 10 Nov 1995 18:00:25 GMT
Organization: Exec-PC BBS - Milwaukee, WI
Lines: 59
Message-ID: <4803vp$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: leo.execpc.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Windows; I; 16bit)
To: [e-mail]

[e-mail] (Gilles Auger) wrote:
>Hi there,
>I would like to install my dual-band (VHF-UHF) transceiver in my car, but I'm afraid
>to do so because it might attract the attention of potential thieves.  At first I
>thought I could solve my problem by buying a transceiver with a removable front panel
>that I could install in the luggage compartment of my car.  Then I realised that it
>would only solve half of my problem since the dual-band antenna would still be
>visible and therefore attract unwanted attention.  That's when I thought of something
>else: Why not use ay AM-FM radio antenna with my transceiver?  Since I never tried
>this before, I would appreciate it very much if there was someone out there who could
>answer my questions and give me some advice.
>
>Here is a sample of the many questions that I have:
>
>1) If I cut the car whip to 19" (it is presently 29" long) so that I have a 1/4 wave
>on VHF and 3/4 wave on UHF, what would be the result on AM and FM bands ?  Would
>there be a big signal degradation ?
>
>2) What is the impedance of the transmission line (coaxial) used in car radios (I
>think it is around 200 ohms) ?
>
>3) If I put a 50 ohms relay-activated T-R switch near the whip (which I could
>activate with a switch in the dash), what would be the consequence of the impedance
>mismatch on the AM-FM signal degradation ?
>
>4) Do you know where I could buy a duplexer or a complete antenna kit that would
>enable me to simultaneously plug my transceiver and my car radio on the radio antenna
>?
>
>Please send your messages to:
>
>amateur packet: [e-mail]
>internet: [e-mail]
>
>Please do not answer on NEWS (internet), because I don't have access to it.  Thanking
>you in advance.
>                          Daniel VE2BAP, Montreal, Quebec, Canada



Daniel,
Skip all the nonsense about usuing the car radio antenna.
Just go out and buy a magnet base antenna, and when you are
worried about theft, just remove it, and put it in the trunk.
I have a 1994 Ford Escort. I am usuing a Yaesu Ft2200, and a
Cushcraft CS270M antenna (magnet mount).
I made a setup for the radio mount with a piece of sheet metal
and some brackets. I finished it off with wrinkel black paint and
some edge trim. I attached to the bottom, two round pieces of
rubber about an inch thick. This fits in the cup holder tray in
front of the gear selector.
When I am worried about theft, I unplug the radio, pull it out,
and put it in the trunk, or take it with me. I also remove the
antenna and put it in the trunk. It takes only about 15 seconds
to remove radio and antenna.

73 de Thomas AA9IS




From Unknown Sat Nov 11 06:57:00 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!van-bc!news.rmii.com!nexus.interealm.com!root
From: "George J. Molnar" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Mobile Whips as Short Dipoles??
Date: Tue, 07 Nov 1995 22:43:16 -0700
Organization: ICG/MagNET [phone]
Lines: 16
Message-ID: <[e-mail]>
NNTP-Posting-Host: ppp203.interealm.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 2.0b2 (Windows; I; 32bit)

Has anyone had success using mobile whips as limited-space antennas
on 80 meters? I know the bandwidth would be VERY limited, but that's
okay -- would just like to get out on a small part of the band -- at
all! My initial tries (2 whips fed with coax in the attic) work about
as well as a dummy load. I must be missing something, eh?

Any input is appreciated.

73,

--
George J. Molnar
Highlands Ranch, Colorado
Internet: [e-mail]
Packet: KF2T@N0QCU.#NECO.CO.USA.NOAM
http://www.interealm.com/p/gmolnar/index.html


From Unknown Sat Nov 11 06:57:01 1995
Path: news.epix.net!news.sprintlink.net!news.bluesky.net!solaris.cc.vt.edu!homer.alpha.net!uwm.edu!vixen.cso.uiuc.edu!news.uoregon.edu!news.rio.com!usenet
From: [e-mail]@rio.com
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Need EZ-WAY Tower Info
Date: 8 Nov 1995 06:16:18 GMT
Organization: Northwest Internet Services, Inc.
Lines: 23
Message-ID: <47phvi$[e-mail]>
References: <47mnt5$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: p16.t0.rio.com
X-Newsreader: IBM NewsReader/2 v1.2

In <47mnt5$[e-mail]>, [e-mail] (Bobby R. Ludlum) writes:
>I have an EZ-WAY RBS-40 crank-up, tilt-over tower
>which I acquired without the "Wonder Post" mounting
>post. Since the company is no longer in business I
>need to build a copy of the "Wonder Post". I am
>looking for someone with an EZ-WAY tower mounted on a
>"Wonder Post" who could share some mounting post
>construction details with me (dimensions, materials,
>hinge details, etc.). If anyone in northwest Florida
>has one that I could take a quick look at, I would
>appreciate hearing from you.
>
>
>Bob, K4LXA
>
I recently looked through some equipment manuals
from my dad's estate, and found the set of instructions
and drawings that came with one of these towers.

If you are interested, mail me and we can work out copying.

John, K7EX
[e-mail], 70366,1331 CIS


From Unknown Sat Nov 11 06:57:02 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!agate!spool.mu.edu!usenet.eel.ufl.edu!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (DTrudell)
Newsgroups: rec.radio.amateur.antenna
Subject: Need manual for UNIQUE Wire Tuner
Date: 10 Nov 1995 08:08:19 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 9
Sender: [e-mail]
Message-ID: <47vis3$[e-mail]>
Reply-To: [e-mail] (DTrudell)
NNTP-Posting-Host: newsbf02.mail.aol.com

I just bought a Unique Wire Tuner at a local swap
meet but did not recieve a manual with it.  I would
appreciate any help in obtaining a copy of the manual
and would be willing to reimburse anyone for the
cost of copying the manual

Thanks, Dick W1AUZ

email: [e-mail]


From Unknown Sat Nov 11 06:57:03 1995
Path: news.epix.net!news.sprintlink.net!malgudi.oar.net!catseye.bluemarble.net!usenet.ucs.indiana.edu!vixen.cso.uiuc.edu!uwm.edu!chi-news.cic.net!io.org!winternet.com!uunet!in2.uu.net!emi.com!crier.knighted.com!knighted.com!yingst
From: [e-mail] (Harry Yingst)
Newsgroups: rec.radio.amateur.antenna
Subject: Need Mods For Icom IC-736
Date: 9 Nov 1995 23:36:42 GMT
Organization: Knighted Computers
Lines: 67
Message-ID: <47u3aa$[e-mail]>
NNTP-Posting-Host: knighted.com
X-Newsreader: TIN [version 1.2 PL2]

Does anyone have any mods for the ICOM IC-736?
I'm looking for a way to turn the pre-amp back on below 1.6 Mhz.
 Icom turns it off even though it the light says it's on.
 I would like to listen for some lowfer stations 1750 meter band
 (160-190 kc. 1 watt into a 50 ft antenna).  I'm also looking for a way to
improve the recieve audio.
 The recieve audio sounds flat and distant, lacking highs & lows.
 With the notch filter ON the audio sounds a little better,
 but it still could use some improvement.
 They re-shape the audio through the notch filter,
 and it actually has a nicer sound with the notch filter on
 (Has more highs & lows).

 I had a IC-737 that had the same problem with the audio,
 just not sounding quite Hright.

 I am also interested in any other mods for the Icom IC-736.

  Please send any replies to [e-mail]

 NoteIf you post a reply into this newsgroup I proably wont get it,
      my internet provider only holds news for 1 day.

  Thank You.

 Harry

N6VUJ









































From Unknown Sat Nov 11 06:57:04 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!bcm.tmc.edu!news.msfc.nasa.gov!elroy.jpl.nasa.gov!lll-winken.llnl.gov!uwm.edu!caen!kuhub.cc.ukans.edu!kuhub.cc.ukans.edu!nntp
Newsgroups: rec.radio.amateur.antenna
Subject: NEED PLANS FOR 2M YAGI
Message-ID: <[e-mail]>
From: [e-mail] (Stephanie Amick)
Date: Fri, 10 Nov 1995 04:52:56 GMT
Nntp-Posting-Host: kuts4p15.cc.ukans.edu
X-Newsreader: Forte Free Agent 1.0.82
Lines: 7


CAN ANYONE PROVIDE PLANS FOR A GOOD
3 ELEMENT YAGI (DIRECTIONAL) 2M?

TNX
 M.



From Unknown Sat Nov 11 06:57:05 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!news.kei.com!simtel!news00.sunet.se!sunic!news99.sunet.se!news.kth.se!nntp.uio.no!nntp-oslo.UNINETT.no!nntp-trd.UNINETT.no!stud.hials.no!iaa
From: [e-mail] (Ivar Aarsnes)
Newsgroups: rec.radio.amateur.antenna
Subject: New ham-radio Homepage!
Date: 8 Nov 1995 09:17:38 GMT
Organization: H|gskolen i ]lesund
Lines: 7
Message-ID: <47psji$[e-mail]>
NNTP-Posting-Host: postkontor.stud.hials.no
X-Newsreader: TIN [version 1.2 PL2]

I have a new homepage on the internet dedicated to ham radio.
Feel fre to check it out and mail me suggestions/new links
The address is:

http://stud.hials.no:24892/~iaa/ham.html

73's de Ivar


From Unknown Sat Nov 11 06:57:05 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!lll-winken.llnl.gov!ames!cronkite.cisco.com!cisco.com!henniger
From: [e-mail] (Mick Henniger)
Newsgroups: rec.radio.amateur.antenna
Subject: Plans to build 2400 Mhz mobile or base?
Date: 9 Nov 95 21:05:51 GMT
Organization: cisco Systems
Lines: 12
Message-ID: <[e-mail]>
NNTP-Posting-Host: nacho.cisco.com
Summary: Plans to build 2400 Mhz mobile or base?

I would like to build a 2400 mhz collinear vertical for my
car, and something like it for my house.

Has anyone played around with this? Any experiences?

What are the dimensions of a collinear at this frequency?

Pointers to good UHF+ antenna building books?

Thanks all,
Mick
AC6EU


From Unknown Sat Nov 11 06:57:07 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!eskimo!localhost
From: [e-mail] (Bill Turner)
Subject: Re: PLEASE HELP A NEW HAM W/ ANTENNA
X-Nntp-Posting-Host: tia1.eskimo.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News User Id)
Organization: Eskimo North (206) For-Ever
X-Newsreader: News Xpress Version 1.0 Beta #4
References: <[e-mail]>
Date: Tue, 7 Nov 1995 06:08:25 GMT
Lines: 39

In article <[e-mail]>,
   [e-mail] (Dr. John Robert Schutt) wrote:
>Can you help me?  I have a very small city lot and am trying to put up an
>antenna.  I'm thinking of running a dipole along the ridgeline of my house
>(or along the gable ends), making it as long as I can.  The ridgeline is
about
>30 feet.  I could let it dangle over the edge of the roofline from there.
I'm
>thinking about feeding it with twinlead into an antenna tuner (I'm looking at
>one made by MFJ that handles 300 watts and has a built in SWR meter and dummy
>load.)
>
>I'd like to work 10-80 meters.  My son and I are thinking of starting with a
>qrp rig to save expenses.  How does this plan sound to you expert,
experienced
>hams?  Is my thinking correct (before I lay out the cash?)  My son and I
would
>like to get on the air (CW at first) but advice from you seasoned hams would
be
>greatly appreciated!  Is there a better way than that which I've proposed?
>
>THANKS A LOT IN ADVANCE!!
>
------------------------------------------------------------------
Welcome to ham radio John!  For your situation, I would recommend a dipole as
long as you can get it (with the ends bent as necessary to add as much length
as possible). Feed it in the center with 450 ohm transmitting-type ladder line
and use a balanced tuner such as the one in QST for February, 1990.  That type
of tuner is more efficient than the typical unbalanced tuner using a balun on
the output side.  With the right values of capacitance and inductance, you
should be able to obtain a perfect match on all of those bands.  On 80 meters,
a 30-foot antenna is electrically rather short, so you may need some fairly
large (read expensive) inductors and capacitors, but it is doable.

Good luck!


73, Bill W7LZP
[e-mail]


From Unknown Sat Nov 11 06:57:08 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!dispatch.news.demon.net!demon!tank.news.pipex.net!pipex!newsfeed.internetmci.com!chi-news.cic.net!uwm.edu!fnnews.fnal.gov!gw1.att.com!nntpa!news
From: Allen R. Shuff <attmail!ashuff>
Subject: Re: Q: Can I Mount an R5 on a Chimney?
Message-ID: <[e-mail]>
Sender: [e-mail] (Netnews Administration)
Nntp-Posting-Host: cbpcarsh.cb.att.com
Reply-To: attmail!ashuff (ARSH)
Organization: AT&T Network Systems
X-Newsreader: DiscussIT 2.5.1.3 for MS Windows [AT&T Software Products Division]
References: <ericr.815677645@access5>
Date: Tue, 7 Nov 1995 13:25:26 GMT
Lines: 45

Eric,
I had an R-7 mounted to my chimney here in central Ohio for 3
years with no problem.  I just went to Radio Shack and picked up
a TV antenna mounting strap package.  I did not use the angle
iron on the corners; however, I think that it is probably a good
idea.  I would also recommend that you spray the straps with
some sort of coating to prevent rust from staining the chimney.

Allen Shuff AI4G
[e-mail]

>==========Eric Rosenberg, 11/6/95==========
>
>
>I've been using my R5 strapped to a 7 foot tall mast off the
>rear deck of
>the house. In this configuration, it is a marginal antenna.
>
>Considering that the antenna is below the roof line, I was
>wondering if I
>could strap-mount it to my chimney.
>
>My thought is to put 1" or 2" angle iron on the corners of the chimney
>(which is approx 3' x 2') with the straps around it, then mount the
>antenna just above the top of the chimney.
>
>How can I tell if the chimney can take this. The wind load is
rather low
>(1.4 ft2), and the angle iron should help...but...I don't want
>to wake up
>or witness a collapse of my chimney!
>
>Please respond via email, as I don't regularly check this newsgroup.
>
>Thanks --
>
>Eric WD3Q
>
>--
>Eric Rosenberg           WD3Q, EI4VPS, YJ0AER, J20BY, etc.
>Washington, DC
>[e-mail]
>




From Unknown Sat Nov 11 06:57:09 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.msfc.nasa.gov!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!news.ti.com!sislnews.csc.ti.com!a0147625!ham
From: [e-mail] (Bil Morrison)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Radio Shack FM antenna mod info request
Date: Fri, 10 Nov 1995 11:36:59 +1000
Organization: Texas Instruments
Lines: 31
Message-ID: <[e-mail]>
References: <47pb0g$[e-mail]>
NNTP-Posting-Host: kk5ao.sc.ti.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B]

In article <47pb0g$[e-mail]> [e-mail] (Roger W Sellers) writes:
>From: [e-mail] (Roger W Sellers)
>Subject: Radio Shack FM antenna mod info request
>Date: 8 Nov 1995 04:17:20 GMT

>Could someone give me any specs on how to modify a Radio Shack Hi gain FM (yagi
>type) antenna to work on 2 meters. I'm looking for info on what lengths to cut
>the elements to. I heard this could be done and good for use on fox-hunts.
>Please reply he or e-mail me at [e-mail].
>Thanks,
>Roger
>KB9LBU

Roger,

I just sent you my copy of the plans you are referring to.  If I knew how to
use this older model Trumpet news reader, I would repost to theis newsgroup
for the benefit of all (I believe the article is over a year old now).

If possible, please assemble both parts of my E-mail and post on this
newsgroup.  It is a very good thread IMHO.

Anyone out there with Trumpet skills that have advice to me, please E-mail at
my sig file location.

VY 73,
Bil Morrison, KK5AO            1979 Yamaha XS750SF (Vroom)
Texas Instruments               1976 Yamaha RD250 (Wing-ding)
Email: [e-mail]
"Everything I like is either illegal, immoral, or fattening".
Std. disclaimer: TI doesn't speak for me, I don't speak for them


From Unknown Sat Nov 11 06:57:10 1995
Path: news.epix.net!news.sprintlink.net!castle.nando.net!news
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: RF Choke for Vertical
Date: 7 Nov 1995 14:58:37 GMT
Organization: News & Observer Public Access
Lines: 18
Message-ID: <47ns6t$[e-mail]>
References: <47lgvm$[e-mail]>
NNTP-Posting-Host: grail1501.nando.net
Mime-Version: 1.0
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>In article <477vnc$[e-mail]>, [e-mail] (Gary York) write
>s:
>>Does anybody have any experience with using a choke between a radialless
>>vertical and the feedline.  I plan on taking some local friends' suggestion
>>to get about 25 ft of coax and construct a simple coil about 8 inches in
>>diameter and about 10 turns.  The reason is that I have experienced some RF
>>feedback in the shack.  Any info is greatly appreciated
>>N6UGJ
>>I have used this technique at both ends of the feedline and it has worked
>quit well for the last several years. Good luck
>
>            73's  Dick K8WHA

Ditto here as well! I wouldn't put a HF antenna up without one. It really helps to
minimize or eliminate rf current on the sheild of your feedline. I've found it to be
a useful tool in eliminating TVI and other types od RFI as well.
73 de Dave WB4IUY



From Unknown Sat Nov 11 06:57:11 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!pipeline!psinntp!psinntp!psinntp!xetron.com!news
From: [e-mail] (Tim Huster)
Subject: Re: RF Choke for Vertical
Message-ID: <[e-mail]>
Sender: [e-mail]
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Date: Tue, 7 Nov 1995 20:32:45 GMT
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I'd like an explanation, if you have the time, Tom!
I have a 10turn 6Inch RG-58 choke that I took out  of service last
year since I had >2:1 SWR with it in-line. I had used
a length of RG-58 that had been previously been used for
other working antenna projects.
On the HF antenna, I ended up snapping 6 ferrite chokes on
to the coax feedline and SWR was 1.2:1 (therabouts). I hung
on to the assembled choke (wound and taped onto a PVC pipe section)
in order to test the choke more thoroughly. DC continuity is still
good. Connectors/cable aren't shorted. Maybe it's time to warm up the
dip meter!!
Thanks!

In article <47fqb9$[e-mail]>, [e-mail] says...
>
>In article <477vnc$[e-mail]>, [e-mail] (Gary York)
>writes:
>
>>
>>Does anybody have any experience with using a choke between a radialless
>>vertical and the feedline.  I plan on taking some local friends'
>suggestion
>>to get about 25 ft of coax and construct a simple coil about 8 inches in
>>diameter and about 10 turns.  The reason is that I have experienced some
>RF
>>feedback in the shack.  Any info is greatly appreciated
>>N6UGJ
>
>Some time back W7EL published a nice list of choke impedances. Any choke
>will help, the impedance is not critical. It should be as large as
>possible without series resonance. You can test for series resonance with
>your radio, a dummy load, and a light bulb, OR a grid dip meter or antenna
>analyzer. If you want to do that I can explain how.
>
>I use air wound chokes here on almost everything, and ferrite sleeve
>chokes on receiving arrays. It's a great idea!
>73 Tom

--
  Timothy W. Huster
  [e-mail]
  kb8bnk@kc8tw.#cin.oh.usa.na
  "I like Daddy's car. It goes faster than Mommy's car!" Andrew H. age 3



From Unknown Sat Nov 11 06:57:12 1995
Newsgroups: rec.radio.amateur.antenna
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From: "Al Koblinski  (W7XA)" <[e-mail]>
Subject: Re: RF Choke for Vertical
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I added one to my vertical for the same reasons (rf on the feedline and
in the shack) and it solved the problem and even reduced some TVI.  It
should use 1/4 wavelength wound into a flat coil at the frequency you
operate, or at the lowest frequency in use.
Should help!
73, Al




From Unknown Sat Nov 11 06:57:13 1995
Path: news.epix.net!news.sprintlink.net!braintree!news.concourse.com!ragnarok.oar.net!malgudi.oar.net!catseye.bluemarble.net!usenet.ucs.indiana.edu!vixen.cso.uiuc.edu!uwm.edu!chi-news.cic.net!news.compuserve.com!newsmaster
From: <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: rfi /ligth dimers
Date: 11 Nov 1995 04:08:11 GMT
Organization: CompuServe Incorporated
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can any one help with silencing light dimer / triac noise 80 meters


From Unknown Sat Nov 11 06:57:14 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!gatech!psuvax1!news.math.psu.edu!chi-news.cic.net!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: SWR meter
Date: 8 Nov 1995 12:19:06 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 10
Message-ID: <47qoqa$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

I recently constructed a single element quad antenna for CB use.The array
has a rated impedance of 120 ohms.I also built a matching transformer from
a six foot length of RG-59/u (rated at 70 ohms) coming from the "active"
wire,into the coax back to the set.(RG-8/u rated at 51 ohms) This is
supposed to impedance match the antenna to the set.Do I now need to
modify my SWR meter to match this setup?It is my understanding that most
currently available meters operate on 50 ohms.How would I make the
changes,if necessary? The set has a bulit in SWR meter,and I added a
meter which shows modulation,watts and SWR. THE two don't match in their
readings. Any response will be appreciated.THANX!


From Unknown Sat Nov 11 06:57:14 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!usenet.eel.ufl.edu!news.interlog.com!winternet.com!uunet!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: swr meter
Date: 9 Nov 1995 21:19:54 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 11
Message-ID: <47ucsa$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

I recently bulit a single element quad for CB use.It's a full wave single
wire rated at 120 impedance.I also bulit a matching transformer from a
six foot length of RG-59/u rated at 70 ohms,running into the RG-8/u
rated at 51 ohms back to the set.This combination of coax types is
supposed to match the array to the set.Here's the problem-the SWR meter
built into the set,and the "gang"set I've added don't show the same
readings.I understand that most commonly available meters operate on
50 ohms.Could the matching transformer be throwing things off? Is there
any way I could or should modify the meter?Any response,whether simple
or complex will be appreciated!  **THANX**



From Unknown Sat Nov 11 06:57:15 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: swr meter modify
Date: 9 Nov 1995 20:42:07 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 12
Message-ID: <47ualf$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

I recently constructed a single element quad for CB use.The array has a
rated impedance of 120 ohms.I also built a matching transformer from a
six foot length of RG-59/u,running from the active element into the
coax going back to the set,RG-8/u.The two coax's,rated at 70 ohms and
51 ohms respectively,are supposed to impedance match the antenna to the
set.Do I now need to modify my SWR meter? The SWR meter in the set,and
the external "gang" set do not show the same thing as to VSWR.I'm
wondering if the matching transformer could be throwing things off?
Is there some way I can modify the meter so that both show the same?
Any response will be appreciated;whether simple or complex.THANX!
:WQ



From Unknown Sat Nov 11 06:57:16 1995
Path: news.epix.net!news.sprintlink.net!hookup!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!elroy.jpl.nasa.gov!usc!chi-news.cic.net!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: SWR Meter Re-Cal?
Date: 8 Nov 1995 11:19:52 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 12
Message-ID: <47qlb8$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com

I recently constructed a single element quad for 27 Mhz.The array has a
rated impedance of 120 ohms.I also built a matching transformer from a
short section of RG-59/u coming off the "wire" and then going to RG-8/u
back to the set.The 59 is rated at 70 ohms and the 8 at 51 ohms.This is
supposed to impedance match the antenna system.It is my understanding
that most SWR meters operate at the 50 ohm range.Do I now need to re-
calibrate my meter to match this,and how would I do it?Any response would
be appreciated;whether simple or complex.THANX!



    \\:


From Unknown Sat Nov 11 06:57:17 1995
Path: news.epix.net!news.sprintlink.net!news.onramp.net!news.tcst.com!op.net!news.fyionline.com!news-out.internetmci.com!internetMCI!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: SWR Meter Re-Cal?
Date: 8 Nov 1995 11:40:39 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 9
Message-ID: <47qmi7$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

I recently constructed a single element quad for 27 Mhz.The array has a
Rated impedance of 120 ohms.I also built a matching transformer from a
short section of RG-59/u,6 feet long,coming off the "wire",and then
going into the RG-8/u,back to the set.The 59 is rated at 70 ohms,and
the 8 at 51 ohms.This is supposed to impedance match the antenna's
120 ohms.It is my understanding that most available SWR meters operate
in the 50 ohm range.Do I now need to recalibrate my meter to match the
system?How would I accomplish this?Any response will be appreciated;
whether simple or complex-I'll just muddle my way through.THANX!


From Unknown Sat Nov 11 06:57:18 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: test
Date: 10 Nov 1995 08:55:53 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 1
Message-ID: <47vll9$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

Please ignore...only a test


From Unknown Sat Nov 11 06:57:19 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!stallion.jsums.edu!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!howland.reston.ans.net!newsfeed.internetmci.com!in2.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: test
Date: 10 Nov 1995 20:37:27 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 1
Message-ID: <480uon$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

Just checking to see if I'm getting through.


From Unknown Sat Nov 11 06:57:20 1995
Path: news.epix.net!news.sprintlink.net!news.bluesky.net!solaris.cc.vt.edu!swiss.ans.net!europa.chnt.gtegsc.com!news.msfc.nasa.gov!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!usc!news.service.uci.edu!unogate!news.intelenet.com!rdatasys.com!periwinkle
From: [e-mail] (Mark A. Downing)
Newsgroups: rec.radio.amateur.antenna
Subject: travel antenna (hotel)
Date: Fri, 10 Nov 95 16:13:11 GMT
Organization: None in particular
Lines: 10
Message-ID: <47vtl0$[e-mail]>
NNTP-Posting-Host: periwinkle.rdatasys.com

I am planning on taking a trip to Dallas in a few weeks, and want to take my
HF rig (FT900). However, I need suggestions for an antenna that I can use. The
hotel is in downtown Dallas, has no opening windows (that I know of), and I
have not spoken to the management of the hotel yet. Any suggestions? I noticed
that MFJ has a portable HF antenna, but have not seen any feedback on it.

Thanks for your help!

73 de AC6PN
--Mark


From Unknown Sat Nov 11 06:57:21 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!gatech!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Vertical grounding system for Butternut.
Date: 7 Nov 1995 05:01:16 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 40
Sender: [e-mail]
Message-ID: <47napc$[e-mail]>
References: <47mh2o$[e-mail]>
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In article <47mh2o$[e-mail]>,
[e-mail] (David E. Shelton) writes:

>today I called the tech. support phone number at Butternut. The guy there
was
>telling me about the capabilities of the HF2V. I have a small backyard,
85ft
>X 55ft., with a chainlink fence around 2 1/2 sides of the yard. The tech
at
>Butternut went onto tell me that the HF2V could be mounted to the
chainlink
>fence as its grounding system. Does this make sense and will it actually
>work?

Well sure it will Dave. Remember you are looking for a large electrical
mass to terminate the other terminal of the feedline. If you have one amp
of current in the base of the vertical, you will have one amp flowing from
the shield to the ground at the antenna! K8GIJ was on a smaller lot than
you, and he made use of a chain link fence on 160. He nearly tied my full
sized system with 120 radials quite often! He also used radials connected
to the fence at many points, even though they were short. They radiated
from the antenna feedpoint in straight lines like spokes, and he made them
as long as he could.

>I am concerned about the antenna's radiation pattern as it is related to
the
>fence's layout. He did go onto tell me that the fence would have to be
well
>grounded into the ground with concrete posts and if there were any gaps
in
>the series of the fence it would need to be jumped with some 1/2inch
grounding
>strap. Once again does this sound like it would work?

I don't believe the earth connection is important at all, except for
lightning or low frequency grounding. At RF, soil is a very poor
termination.

73,
Tom


From Unknown Sat Nov 11 06:57:22 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.msfc.nasa.gov!elroy.jpl.nasa.gov!swrinde!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (Dedelvis04)
Newsgroups: rec.radio.amateur.antenna
Subject: WANTED: Antenna Software
Date: 10 Nov 1995 23:55:02 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 1
Sender: [e-mail]
Message-ID: <481ab6$[e-mail]>
Reply-To: [e-mail] (Dedelvis04)
NNTP-Posting-Host: newsbf02.mail.aol.com

Please tell me where I can get antenna software !!


From Unknown Sat Nov 11 06:57:23 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Roger A. Cox <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Water in traps
Date: 7 Nov 1995 14:17:25 GMT
Organization: Telex Communications, Inc.
Lines: 9
Message-ID: <47nppl$m19$[e-mail]>
References: <47aq93$[e-mail]>

Dick,

It would be great if the trap was pressurized or sealed with no
air space, but practical designs prohibit this.  The trap must be
open to let the water out.  Even if sealed, water will condense
from the temperature changes.

73, Roger
WB0DGF


From Unknown Sat Nov 11 06:57:23 1995
Path: news.epix.net!news.sprintlink.net!connix.com!news
From: pete brunelli <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Where to mount an antenna on Suzuki sidekick w/ softtop
Date: 9 Nov 1995 12:44:05 GMT
Organization: Connix - The Connecticut Internet Exchange
Lines: 21
Message-ID: <47st2l$[e-mail]>
References: <[e-mail]>
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[e-mail] (Vinod Narayanan) wrote:
>
>I just purchased a 2m mobile.  I would like to use it in my suzuki
>sidekick, and am wondering how to get a reasonable ground plane antenna
>in that car.
>
Vinod,
i would take a good look at the spare-tire carrier, bumper, and body.  If you
are contemplating drilling the sifttop (!!!) then putting a hustler ssm
stainless ball mount on the side or rear body should be a relief.

gl

------------------------------------------------------------------
Pete Brunelli                             Amateur Call N1QDQ
             Check out http://www.connix.com/~pcb
            Home of the Rolling Thunder Contest Club
               Mobileering for a Better Tomorrow
------------------------------------------------------------------




From Unknown Sat Nov 11 06:57:24 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!eskimo!localhost
From: [e-mail] (Bill Turner)
Subject: Re: Yagi or Omni?
X-Nntp-Posting-Host: tia1.eskimo.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News User Id)
Organization: Eskimo North (206) For-Ever
X-Newsreader: News Xpress Version 1.0 Beta #4
References: <47lmao$[e-mail]>
Date: Tue, 7 Nov 1995 06:14:57 GMT
Lines: 27

In article <47lmao$[e-mail]>,
   [e-mail] (Steve Zinski) wrote:
>Hello.  I just moved into a neighborhood that has covenants and
>restrictions regarding outside antennas.  However, I have heard that
>there is no formal committee and my neighbors have stated that they would
>not be upset if I put up a non-conspicious antenna.
>
>I currently own a Cushcraft 13B2 (BIG antenna!) that I am planning to
>sell and I want to purchase a good dual-band (2m/70cm) antenna that is
>smaller.
>
>My quesion is simple:  Cushcraft offers a dual-band yagi (10db gain) and
>a fiberglass omni (9db on 2m, 12db on 70cm).  Would I be better off with
>the omni since it has practically the same gain as the yagi and also
>doesn't require a rotor?
>
>                               --Steve N9VAH/4
>
-------------------------------------------------------------------------
For most purposes, yes, but the yagi has the advantage of being able to null
out QRM and noise.  With the omni, you're stuck.  If your main interest is
FM simplex and repeaters, I'd go with the omni.  For weak-signal DXing, go
with the yagi.  Good luck!


73, Bill W7LZP
[e-mail]


From Unknown Sat Nov 11 06:57:25 1995
Path: news.epix.net!news.sprintlink.net!psgrain!fizban.solace.mh.se!demos!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Yagi or Omni?
Date: 7 Nov 1995 08:13:52 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 11
Message-ID: <47n4g0$[e-mail]>
References: <47lmao$[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de

>My quesion is simple:  Cushcraft offers a dual-band yagi (10db gain) and
>a fiberglass omni (9db on 2m, 12db on 70cm).

Steve,

you can be sure that the gain figure for the omni is quoted too high.
the 10 dB for the Yagi may be realistic.

73, Moritz DL5UH




From Unknown Sat Nov 11 06:57:26 1995
Path: news.epix.net!news.sprintlink.net!castle.nando.net!news
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Yagi or Omni?
Date: 7 Nov 1995 14:54:08 GMT
Organization: News & Observer Public Access
Lines: 25
Message-ID: <47nrug$[e-mail]>
References: <47lmao$[e-mail]>
NNTP-Posting-Host: grail1501.nando.net
Mime-Version: 1.0
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Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
To: [e-mail]

>Hello.  I just moved into a neighborhood that has covenants and
>restrictions regarding outside antennas.  However, I have heard that
>there is no formal committee and my neighbors have stated that they would
>not be upset if I put up a non-conspicious antenna.
>
>I currently own a Cushcraft 13B2 (BIG antenna!) that I am planning to
>sell and I want to purchase a good dual-band (2m/70cm) antenna that is
>smaller.
>
>My quesion is simple:  Cushcraft offers a dual-band yagi (10db gain) and
>a fiberglass omni (9db on 2m, 12db on 70cm).  Would I be better off with
>the omni since it has practically the same gain as the yagi and also
>doesn't require a rotor?
>
>                               --Steve N9VAH/4

I think I'd go with the yagi. Many of the omni gain figures are advertised as being
very high...too high to even sound reasonable sometimes. I'm not sure what some of
them use for a reference, but it makes one wonder. The yagi has an advantage of
directing your signal during band openings so as not cause unintentional
interference to other repeaters, and also helps you "weed out" interfering siganls
as well.
Just my $.02...
73 de Dave WB4IUY



From Unknown Sat Nov 11 06:57:27 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!usenet.eel.ufl.edu!usenet.cis.ufl.edu!caen!reeve.research.aa.wl.com!decwrl!pacbell.com!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help -- will a buried copper ground wire corrode?"
Date: 8 Nov 95 07:58:29 GMT
Organization: ucsd usenet gateway
Lines: 3
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

The mailing list "--" could not be found.
You may use the INDEX command to get a listing
of available mailing lists.


From Unknown Thu Nov 16 05:32:14 1995
Path: news.epix.net!news.sprintlink.net!psgrain!nntp.teleport.com!usenet
From: Daniel Calzaretta <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: (no subject)
Date: 15 Nov 1995 18:39:42 GMT
Organization: Pacific Crest Community School
Lines: 13
Message-ID: <48dc5e$[e-mail]>
NNTP-Posting-Host: ip-pdx07-03.teleport.com
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I am looking for a 160 (or 80) thru 10 (or even 6 and 2) meter vertical
antenna.  Because of my location, I will not be able to use a radial
system.  Does anyone have any suggestions of which antenna to buy and
which to stay away from?  Please e-mail me at

[e-mail]

Thanks,


Dan
N9BCC, Portland, Oregon



From Unknown Thu Nov 16 05:32:15 1995
Path: news.epix.net!news.sprintlink.net!news.texas.net!imci2!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 160 vertical vs Inverted Vee - What say
Date: 13 Nov 1995 13:44:12 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 33
Sender: [e-mail]
Message-ID: <4883ls$[e-mail]>
References: <47laqd$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47laqd$[e-mail]>,
[e-mail] () writes:

>
>BTW, I am also interested in other's opinions/experience with the
question
>of a 1/4 wl vertical vs. inverted vee or delta loop with the apex 1/4 wl
up.
>
>73, Moritz DL5UH
>
>

My results are here at my location in Georgia with poor soil (average in
are is around 1 to 2 mS/m).

On 80 meters, a top loaded 35 foot vertical with a good ground ~100
radials ties my dipole at 135 feet high on 80 into Europe night after
night (I'd be happy to sked and do an A-B test on 80 CW). But the dipole
wins in the USA. A GAP was always several S units weaker than both.

On 160 meters, in Ohio (soil ~15 mS/Meter) a 1/4 wl vertical always beat a
high dipole for DX into anywhere further than several hundred miles. When
I installed a dipole at 300 feet, it beat the vertical at every distance
and every day (except groundwave). A 5/8 wl vertical was beat by the 1/4
wave and the both the low and high dipoles.

I have never found anyone with a good ground system that had a better
signal with a 130 foot high dipole than a 1/4 wl vertical on 160 except
within a few hundred miles. From Atlanta to (W5NTJ) Becker, Mississippi
the verticals work better than the 1/4 wl high horizontals every night.

73 Tom


From Unknown Thu Nov 16 05:32:16 1995
Path: news.epix.net!news.sprintlink.net!malgudi.oar.net!watt.oedison.com!usenet
From: [e-mail] (John Wagner)
Newsgroups: rec.radio.amateur.antenna
Subject: 3 repeater systems, 1 antenna???
Date: Tue, 14 Nov 1995 14:40:21 GMT
Organization: Ohio Edison Company, Akron OH
Lines: 50
Message-ID: <48a9eo$[e-mail]>
NNTP-Posting-Host: go-bus-appl-4-8x.oedison.com
X-Newsreader: Forte Free Agent 1.0.82

I am interested in combining a VHF(2m) repeater, a UHF(440) repeater, and a
2m packet node onto a single dual band antenna.

Currently, we have the 2 meter repeater and the 440 repeater combined into
the single antenna with a common 144/440 diplexer, like those used with a
dual band mobile radio, and it works quite well.

We (our club) would also like to combine the 2 meter packet node onto this
antenna.  We have several full size bandpass cavities available from a
disassembled repeater duplexer.  Is it as simple as a coax tee and a couple

of bandpass cavities in front of the node, or do we need more?

***USE FIXED SPACE FONT TO VIEW CORRECTLY***
|-------------|
| 2m packet   |-BP cavity-|
|   145.01    |  145.01   |
|-------------|           |
                          |
|-------------|           |                                 dualband
| 2m repeater | BP style  ?                                  antenna
| 147.99/39   |-duplexer-???                                   < >
|-------------|             \                                   |
                           |144/440 diplexer|-------------------|
|-------------| BP style    /
|440 repeater |-duplexer---/
|442.375/7.375|
|-------------|

The area in the ??? is what I'm not sure about.  Can this be a coaxial tee?

Thanks in advance!
John, N8CID

-------------------------------------------------------------------
John Wagner                  [e-mail]

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From Unknown Thu Nov 16 05:32:17 1995
Path: news.epix.net!news.sprintlink.net!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Chris Boone <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 3 repeater systems, 1 antenna???
Date: 16 Nov 1995 00:10:52 GMT
Organization: GSU/ENTERGY
Lines: 24
Message-ID: <48dvic$jj1$[e-mail]>
References: <48a9eo$[e-mail]>

You should make the T and coaxial cables from the T to the
duplexer and the bandpass cavities similar to the cables in your
BpBr duplexer for proper impeadance matching, etc...
Try to make the lengths the same length as the T runs on yuor
duplexer and add 1/2wave IN COAX (1/2wave x VF which in MOST
cases is .66... VF is Veloicty Factor) on both side to keep the
pahsing lengths and Z the same...

You will also NEED a NOTCH cavity in line from the T to the BpBr
duplexer to prevent the 145.01 signal from feeding into your rptr
system.....Basically you will end up with a 2 cavity duplexer
(one cavity BP and the other side BR) and then connect the packet
to the BP side and the duplexer for the voice rptr to the BR
side..

73
Chris
WB5ITT

--

Chris Boone WB5ITT                     Compuserve 72732,2610
PO Box 3102                            FIDO 1:106/4267
Conroe, Texas 77305-3102               Sysop WBBS @ 409-447-4267


From Unknown Thu Nov 16 05:32:19 1995
Path: news.epix.net!news.sprintlink.net!news.cirrus.com!bug.rahul.net!a2i!infoseek.com!uunet!in2.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 40 m vertical (from .homebrew)
Date: 14 Nov 1995 11:06:23 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 58
Sender: [e-mail]
Message-ID: <48aepv$[e-mail]>
References: <487al3$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Hi Moritz,
In article <487al3$[e-mail]>,
[e-mail] () writes:

>I have a little problem in understanding the above statement. If there
was a
>significant loss term proportional to the the base current and not to the

>current maximum as expressed by the properly defined radiation resistance

>(Brown, Proc. IRE 1936), the folded Marcony would make sense.

The NET base current does NOT change from adding drop wires. That's where
some writers go wrong, they assume it does (i.e. Orr in his folded 160
antenna articles, McCoy in his recent CQ articles). They seem to forget
one (or more) conductor continues past the feedpoint. None of it's current
is seen by the transmission line, yet it's current still causes I*I*R
system losses.

For example, assume I had a single wire vertical 1/4 wl element and for a
given the current was one ampere and the feedpoint voltage was 30 volts.
The feedline termination impedance (a combination of base radiation and
loss resistances) would be 30 ohms, and the directly coupled current in
the ground system would be one ampere.

If I added a second 1/4 wl parallel wire next to the original wire that
continued past the feedpoint and tied to the ground system, the following
changes take place:
Current divides between the two wires, so the feedline only supplies 1/2
ampere.
Radiated power remains the same, so the feedline voltage doubles and is
now 60 volts. The current in the ground system remains one ampere because
in-phase currents of 1/2 ampere from the wire and 1/2 ampere from the coax
shield add in it.
The feedpoint impedance has now multiplied by four to 120 ohms. The sum of
radiation and loss resistances remain 30 ohms. The efficiency of the
antenna and ground system remains absolutely unchanged.

>Also, making a quarterwave electrically into a halfwave
>would indeed save the need of a ground plane |||||| and not just raise
>the radiation resistance (effective height) by a comparably small amount.

The first part is true, but doing so with the same physical size radiator
may lower the radiation resistance unless the loading is done properly.
Radiation resistance is properly defined as the effective current that
caused the radiation divided by the total power radiated. Adding
carelessly placed lumped loading to make an antenna appear like a half
wave will concentrate current in a smaller area of the antenna and
increase the net current required to produce the same radiated field.
Lumped loading will also add extra loss resistance, perhaps at a faster
rate than the radiation resistance increases.

Radiation resistance and feedpoint resistance are not the same thing, and
if we freely interchange feedpoint resistance and radiation resistance
without measuring loss at the same point we will be misled.

 73,
Tom


From Unknown Thu Nov 16 05:32:19 1995
Path: news.epix.net!news.sprintlink.net!news.inc.net!news
From: rvanzant <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: 600mhz broadcast TV beam
Date: 12 Nov 1995 15:13:11 GMT
Organization: van.inc.net
Lines: 11
Message-ID: <4852u8$[e-mail]>
NNTP-Posting-Host: van.inc.net
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.12 (X11; I; Linux 1.3.39 i486)
X-URL: news:rec.radio.amateur.antenna#484qma$[e-mail]

Hi all,

      I'm attempting to build a yagi to receive broadcast TV channel 34, which
is approx 600mhz, if memory serves.  All the antenna sw I have seems to be
geared at 70cm or less, so I'd like to hear from anyone regarding antenna
design at the higher freq.  Will probably also need a single channel amp,
either commercial or homebrew, so advice there would be appreciated as well.

thanks in advance,
rvz  N9ORG



From Unknown Thu Nov 16 05:32:20 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.msfc.nasa.gov!sol.ctr.columbia.edu!news.oberlin.edu!ocvaxa.cc.oberlin.edu!PRUTH
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: 80-10m plus WARCs with one wire?
Date: 14 Nov 1995 14:16:03 GMT
Organization: Oberlin College, Oberlin, Ohio
Lines: 13
Message-ID: <48a8b3$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: alpha.cc.oberlin.edu

I'm currently using a G5RV with an autotuner without much success.
This doesn't surprise me since the autotuner can only handle a
range of 16-150 ohms impedance. What I'd like to do is replace the
G5RV with a resonant antenna system in an inverted-V configuration,
with one feedline to one antenna to cover 80-10m, including 30,
17 and 12 meters, and not to be longer than around 100'.  The
Alpha-Delta DX-CC looks promising, but I don't know if it would
serendipitously provide the WARCs along with its pre-WARC
bands of resonance.  A friend swears he was able to get a single-
wire dipole (a shortened 80m?) to tune up on all bands,
including the WARCs, with his autotuner.  Is anyone currently
using a single-feed wire antenna which provides the WARCs within
3:1 SWR?  --Bill KB8USZ [e-mail]


From Unknown Thu Nov 16 05:32:21 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!elroy.jpl.nasa.gov!sdd.hp.com!vixen.cso.uiuc.edu!usenet
From: [e-mail] (Ignacy Misztal)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 80-10m plus WARCs with one wire?
Date: 15 Nov 1995 18:46:46 GMT
Organization: University of Illinois
Lines: 23
Message-ID: <48dcim$[e-mail]>
References: <48a8b3$[e-mail]> <[e-mail]>
Reply-To: [e-mail] (Ignacy Misztal)
NNTP-Posting-Host: misz.animal.uiuc.edu
X-Newsreader: IBM NewsReader/2 v1.02

In <[e-mail]>, [e-mail] (WB3U) writes:
>   [e-mail] wrote:
>
>>I'm currently using a G5RV with an autotuner without much success.

If you "modify" G5RV to use the ladder line to the shack, terminate it
with a 4:1 transformer/balun.  A 450 Ohm line presents impedances of
90 to 2250 Ohm at 5:1 SWR, and your tuner is not likely to match most
of them.  After matching, impedances will be in the 22 to 600 Ohm
range, a range much easier for your transmatch.

Baluns/transformers will not transform reactances in an easily
predictable manner, but such an approach works here quite well
nevertheless.  Toroids do not have to be large.  In my shack, a 1.5
inch toroid does not heat at 500W power level even at a large
mismatch.


Ignacy Misztal              Ham radio: NO9E, SP8FWB
E-mail: [e-mail]
University Of Illinois      1207 W. Gregory Dr., Urbana, IL 61801, USA
tel. [phone]         Fax: [phone]



From Unknown Thu Nov 16 05:32:22 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 80-10m plus WARCs with one wire?
Date: 15 Nov 1995 16:05:39 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 14
Distribution: world
Message-ID: <48d34j$[e-mail]>
References: <48a8b3$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <48a8b3$[e-mail]>,
 <[e-mail]> wrote:
>I'm currently using a G5RV with an autotuner without much success.

A "real" antenna tuner would solve most of your problems.

>Is anyone currently using a single-feed wire antenna which provides
>the WARCs within 3:1 SWR?  --Bill KB8USZ [e-mail]

Bill, a number of us are wrestling with the problem. Beware anyone who sells
a device to lower SWR on a dipole. It is usually a dummy load resistor in
parallel with the antenna.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Thu Nov 16 05:32:23 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!munnari.OZ.AU!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: RE: 80-10m plus WARCs with one wire?
Date: 15 Nov 95 18:50:10 GMT
Organization: ucsd usenet gateway
Lines: 22
Message-ID: <9511151850.AA01154@dilbert>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

Bill KB8USZ-

I'm using a single wire loop, and granted it is longer
than you said you could put up, about 450 ft. I have a
4:1 balun at the feed point, and 50 ft. of RG-8 down
into the house. I can tune down under 1.5:1 on any band
10 - 160 meters with my matchbox, though it seems to
work better as an end fed, usually.
I used a length of 12 guage Romax, (house wiring), split
the outer jacket, and soldered the pieces end to end.
Then put it up from the house, to the tower, several
trees, the garage, and back to the house. Cost: a couple
of bucks for insulators, and about $15 for the balun. :-)
Try the wire approach, or a dipole, they're cheap, easy,
and work on a wide range of freqs.


Best regards,
Dave kb0tyz

[e-mail]   [phone]
7100 - 7150 khz CW


From Unknown Thu Nov 16 05:32:24 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!btnet!zetnet.co.uk!demon!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 80-10m plus WARCs with one wire?
Date: Wed, 15 Nov 95 05:43:11 GMT
Lines: 33
Message-ID: <[e-mail]>
References: <48a8b3$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4

   [e-mail] wrote:

>I'm currently using a G5RV with an autotuner without much success.
>This doesn't surprise me since the autotuner can only handle a
>range of 16-150 ohms impedance. What I'd like to do is replace the
>G5RV with a resonant antenna system in an inverted-V configuration,
>with one feedline to one antenna to cover 80-10m, including 30,
>17 and 12 meters, and not to be longer than around 100'.

Bill,

If there's a magic combination of radiator and feedline length that
will do that, no one's found it yet.

>The Alpha-Delta DX-CC looks promising, but I don't know if it would
>serendipitously provide the WARCs along with its pre-WARC
>bands of resonance.  A friend swears he was able to get a single-
>wire dipole (a shortened 80m?) to tune up on all bands,
>including the WARCs, with his autotuner.  Is anyone currently
>using a single-feed wire antenna which provides the WARCs within
>3:1 SWR?  --Bill KB8USZ [e-mail]

IMO, you have two choices.  You can either put up a trap dipole, or
you can put up a single wire, feed it with ladder line, and buy or
build a balanced tuner (link coupled).  The former is more convenient
from the standpoint of frequency changes, but the latter allows using
almost any antenna length that fits your property, while still
maintaining system efficiency.

73,

Jack  WB3U


From Unknown Thu Nov 16 05:32:25 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!miwok!anemone
From: [e-mail] (Justin May)
Newsgroups: rec.radio.amateur.antenna
Subject: A Mobile Magent-Mount Antenna
Date: 13 Nov 1995 22:08:57 GMT
Organization: North Bay Network, Inc. news server - not responsible for content
Lines: 11
Message-ID: <488flp$[e-mail]>
NNTP-Posting-Host: linex.com
X-Newsreader: TIN [version 1.2 PL2]

I'm planning to set up a station with 3 watts of power, and was wondering
if it'd be wise to use a magnet mount CB antenna. How well will it work?
Thanks in advance.

--
------------------------------------------------------------------------------
THIS SIGNATURE IS A JUST A PLUG FOR A REALLY GREAT BAY AREA BAND CALLED
ANEMONE. FOR MORE INFO ON ANEMONE JUST MAIL [e-mail], OR World Wide
Web to http://linex.com/~anemone

"That's the stupidest thing I've ever heard!" - Bill Gates


From Unknown Thu Nov 16 05:32:26 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!elroy.jpl.nasa.gov!usc!math.ohio-state.edu!magnus.acs.ohio-state.edu!cgreenha
From: [e-mail] (Christopher K Greenhalgh)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: A Mobile Magent-Mount Antenna
Date: 14 Nov 1995 15:52:30 GMT
Organization: The Ohio State University
Lines: 14
Message-ID: <48advu$[e-mail]>
References: <488flp$[e-mail]>
NNTP-Posting-Host: beauty.magnus.acs.ohio-state.edu

In article <488flp$[e-mail]>, Justin May <[e-mail]> wrote:
>I'm planning to set up a station with 3 watts of power, and was wondering
>if it'd be wise to use a magnet mount CB antenna. How well will it work?
>Thanks in advance.

Depends...what frequency and mode will you be transmitting on?



--
  +=================================+===================================+
  |Christopher K. Greenhalgh, N8WCT |[e-mail] |
  |Electronic/Computer Tech. @ OSU  |radio: n8wct@w8cqk.#cmh.oh.usa.noam|
  +=================================+===================================+


From Unknown Thu Nov 16 05:32:27 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!ulowell.uml.edu!vtc.tacom.army.mil!wx8l
From: [e-mail] (Sean McCarthy)
Newsgroups: rec.radio.amateur.antenna
Subject: Advice wanted: Stacking big antennas
Date: 11 Nov 1995 18:05:16 GMT
Organization: Vetronics Technology Center, US Army TACOM, Warren, Michigan USA
Lines: 24
Message-ID: <482oks$[e-mail]>
NNTP-Posting-Host: pm095-03.dialip.mich.net
X-Newsreader: News Xpress Version 1.0 Beta #4



I'm in the process of installing a 70 foot guyed tower at the homestead.
It will be Rohn 25G, to Rohn spec. I have a Hy-Gain TH7DX for the top and a
TailTwister to turn it all.

My question is regarding stacking a 2 element 40M beam over this. Finding
information on doing it "right" is impossible.

What spacing?
What type of mast?
What else to worry about?

It would be nice if 2" thick wall aluminum could be used, to keep the brackets
from needing alteration.
Rohn wont comment on anything above the apex of the tower, so I'm forced to
ask those who have done it with success.

On a side note, If you wanted to put up a 70 footer strictly for the lowbands,
and wanted 80-10+WARC, what would you put on it? (keep in mind I have the TH7
at this time)

Thanks,
Sean


From Unknown Thu Nov 16 05:32:27 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!uwm.edu!psuvax1!news.cc.swarthmore.edu!netnews.upenn.edu!Lehigh.EDU!Lehigh.EDU!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Balun on R7
Date: 14 Nov 1995 08:01:04 -0500
Lines: 11
Message-ID: <48a3ug$[e-mail]>
NNTP-Posting-Host: ns1-1.cc.lehigh.edu

In article <47q61e$[e-mail]>, [e-mail].o
h.us (W VanHorne) writes:
>[e-mail] wrote:
>: What is the collective opinion of using a balun on the Cushcraft R7?
>
>: Roland WF4P/AAR2AA
Why put a BALUN in when the antenna works off a counterpoise system with a
matching transformer input at the base ??

        Dick K8WHA
        >


From Unknown Thu Nov 16 05:32:29 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!EU.net!gatech2!wa4mei!ke4zv!gary
From: [e-mail] (Gary Coffman)
Subject: Re: Best Portable 6M Antenna?
Message-ID: <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
Organization: Destructive Testing Systems
References: <[e-mail]>
Date: Sun, 12 Nov 1995 05:16:50 GMT
Lines: 40

In article <[e-mail]> [e-mail] writes:
>
>Take a piece of RG58 or RG8-mini coax about 20 or 30 feet long.
>Install a PL-259 (or whatever connector you need) to one end.
>At the other end, measure off about 54" and carefully cut the outer
>black insulation all the way around without cutting into the braided
>shield within. Use a sharp Exact-o knife.  It will allow you to easily
>cut the insulation without having to apply too much pressure and you
>will be able to sense when you are touching the inner shield.
>Once you have cut all the way around, cut into the insulation from the
>ring you just made to the open end of the coax then peel away the
>insulation.  What you have now is 20 (or 30) feet of coax with the last
>54" exposed to the outer braid.  Now use a small jewelers screwdrivers
>(or any small pointed object) to seperate the inner conductor insulation
>from the outer braid at the point where the shield becomes exposed from
>the rest of the run of coax and pull them apart.
>Erect this as a dipole with the shield running opposite to the inner
>conductor  with the center coax running to the radio. Install it
>horizontally or vertically as required.

There's another way to do this that I like better. Instead of
separating the braid and extracting the inner conductor, just
push back on the braid so that it loosens like a Chinese finger
trap, reverse the braid at the end (like rolling a sock) and
roll it down so that it extends below the inner and over the
outer insulation  below the cut. When you're done, you have
a "sleeve" of coax braid extending down 1/4-wave and the inner
standing up 1/4-wave. Bend a small loop in the end of the inner
so you can hang it.

This is an easy antenna to make, an easy antenna to install,
and an easy antenna to roll up and pack away. And on top of
all that, it works too.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | emory!kd4nc!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | [e-mail]
Lawrenceville, GA 30244     |                     |


From Unknown Thu Nov 16 05:32:30 1995
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!news.bc.net!lancelot.dowco.com!NewsWatcher!user
From: [e-mail] (Scott Leaf)
Subject: Burt Fisher jokes not funny
Sender: [e-mail]
Message-ID: <ve7zvz-1111951828010001@206.12.26.40>
Date: Sun, 12 Nov 1995 01:28:21 GMT
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]>
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Organization: Mountain DX Club VA7SM
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In article <4835cg$[e-mail]>, Burt Fisher <[e-mail]> wrote:

-> Ham operator Jokes:
->
-> 1.  What is the thinnest book in the world?
->     What hams know about women.
->
-> 2.  How does a ham take a bubble bath?
->     He eats beans for dinner.
->
-> 3.  What's a ham's idea of foreplay?
->     A half hour of contesting.
->
-> 4.  How can you tell if a ham is sexually excited?
->     If he's still breathing.
->
-> 5.  How many hams does it take to change a roll of toilet paper?
->      We don't know...it has never happened.
->
-> 6.  What's a ham's idea of helping with the housework?
->      Lifting his leg so you can vacuum.
->
-> 7.  What does a ham consider a seven course meal?
->      A hot dog and a six pack of beer.

Not only are they not funny they are not even original, your going to have
to find better material Burt! :)

73's

--
Scott Leaf VE7ZVZ
[e-mail]
Port Coquitlam, British Columbia, Canada
Mountain DX Club VA7SM - "To Boldy VHF Where No Man Has VHFed Before"


From Unknown Thu Nov 16 05:32:31 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Burt Fisher jokes not funny
Date: 12 Nov 1995 11:28:48 GMT
Lines: 21
Message-ID: <484lpg$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <ve7zvz-1111951828010001@206.12.26.40>
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[e-mail] (Scott Leaf) wrote:
>In article <4835cg$[e-mail]>, Burt Fisher <[e-mail]>
>-> 7.  What does a ham consider a seven course meal?
>->      A hot dog and a six pack of beer.
>
>Not only are they not funny they are not even original, your going to have
>to find better material Burt! :)

They are half original.
I guess since the jokes are based on truisms they are not that funny.


#================#=====================================================#
|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
|    K1OIK       |  The less you say, the more people will remember    |
#================#=====================================================#
| [e-mail]                                [e-mail] |
#======================================================================#




From Unknown Thu Nov 16 05:32:32 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Burt Fisher jokes not funny
Date: 12 Nov 1995 11:30:18 GMT
Lines: 28
Message-ID: <484lsa$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <ve7zvz-1111951828010001@206.12.26.40> <[e-mail]>
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[e-mail] (R. Wiley) wrote:
>.
>
>I think they can be fixed, see below;
>
>>-> 7.  What does Burt Fisher consider a seven course meal?
>>->      A hot dog and a six pack of beer.
>
>
>Yeah, I know Burt gets off on seeing his name
>posted, but I couldn't resist.
>
>
>NE0R

I must admit you nailed me good.



#================#=====================================================#
|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
|    K1OIK       |  The less you say, the more people will remember    |
#================#=====================================================#
| [e-mail]                                [e-mail] |
#======================================================================#




From Unknown Thu Nov 16 05:32:33 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!tir.com!news
From: [e-mail] (Tim English)
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Burt Fisher jokes not funny
Date: Sun, 12 Nov 1995 15:23:34 GMT
Organization: The Internet Ramp
Lines: 31
Message-ID: <484oqi$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <ve7zvz-1111951828010001@206.12.26.40> <484lpg$[e-mail]>
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Burt, why dont you just go away someplace else. Your the only one who
enjoys your "so called" wit. We all think your a jerk. You must lead
an awfully sheltered dull life if this is all you can find to do for
fun...


Burt Fisher <[e-mail]> wrote:

>[e-mail] (Scott Leaf) wrote:
>>In article <4835cg$[e-mail]>, Burt Fisher <[e-mail]>
>>-> 7.  What does a ham consider a seven course meal?
>>->      A hot dog and a six pack of beer.
>>
>>Not only are they not funny they are not even original, your going to have
>>to find better material Burt! :)

>They are half original.
>I guess since the jokes are based on truisms they are not that funny.


>#================#=====================================================#
>|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
>| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
>|    K1OIK       |  The less you say, the more people will remember    |
>#================#=====================================================#
>| [e-mail]                                [e-mail] |
>#======================================================================#






From Unknown Thu Nov 16 05:32:34 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!news.math.psu.edu!psuvax1!news.cc.swarthmore.edu!netnews.upenn.edu!Lehigh.EDU!Lehigh.EDU!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Burt Fisher jokes not funny
Date: 12 Nov 1995 11:41:26 -0500
Lines: 37
Message-ID: <48583m$[e-mail]>
NNTP-Posting-Host: ns2-1.cc.lehigh.edu

>-> Ham operator Jokes:
>->
>-> 1.  What is the thinnest book in the world?
>->     What hams know about women.
>->
>-> 2.  How does a ham take a bubble bath?
>->     He eats beans for dinner.
>->
>-> 3.  What's a ham's idea of foreplay?
>->     A half hour of contesting.
>->
>-> 4.  How can you tell if a ham is sexually excited?
>->     If he's still breathing.
>->
>-> 5.  How many hams does it take to change a roll of toilet paper?
>->      We don't know...it has never happened.
>->
>-> 6.  What's a ham's idea of helping with the housework?
>->      Lifting his leg so you can vacuum.
>->
>-> 7.  What does a ham consider a seven course meal?
>->      A hot dog and a six pack of beer.
>
>Not only are they not funny they are not even original, your going to have
>to find better material Burt! :)

what? is burt putting himself down AGAIN? hell...he IS a ham
<well...technicly a ham at least>

DAvid
|-----------------------------------------------------------------------|
|         David Roseman       |          [e-mail]       OUTTA ORDER!
|                             |          Saucon Valley Sen. HS   |      |
|      SysOp of NODE 3 BBS    |          The Flying HAm - BBS    |      |
|     Running OBV/2 Software  |          Technomage - BBS        |      |
|                             |          N3SQE/1     - HAm       V      |
|                             |  [e-mail] - Packet  |


From Unknown Thu Nov 16 05:32:36 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Burt Fisher jokes not funny
Date: 13 Nov 1995 01:36:04 GMT
Lines: 18
Message-ID: <4867e4$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <ve7zvz-1111951828010001@206.12.26.40> <484lpg$[e-mail]> <484oqi$[e-mail]>
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[e-mail] (Tim English) wrote:
>Burt, why dont you just go away someplace else. Your the only one who
>enjoys your "so called" wit. We all think your a jerk. You must lead
>an awfully sheltered dull life if this is all you can find to do for

Then why do I get frequent messages that appreciate my comments?


#================#=====================================================#
|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
|    K1OIK       |  The less you say, the more people will remember    |
#================#=====================================================#
| [e-mail]                                [e-mail] |
#======================================================================#




From Unknown Thu Nov 16 05:32:37 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!howland.reston.ans.net!usc!newshub.cts.com!usenet
From: [e-mail] (Jason L.)
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Burt Fisher jokes not funny
Date: 13 Nov 1995 04:49:42 GMT
Organization: CTS Network Services
Lines: 12
Message-ID: <486ip6$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <ve7zvz-1111951828010001@206.12.26.40> <484lpg$[e-mail]>
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Well, DAWG! Burt Fisher's jokes not funny?
Y'all must got rocks fer brains! Ah'z just finishin'
readin' some print outs of Burt's jokes while
relaxin' in the bath -- fartin' up a storm.
Makes like a freakin' hot tub.

Ye haw! Let's hear it for Burt's humor!

--
[e-mail]
"I choose to assert my fifth amendment privilege."



From Unknown Thu Nov 16 05:32:38 1995
Path: news.epix.net!news.sprintlink.net!nuclear.microserve.net!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap
Subject: Burt Fisher Spamming the Net
Date: Mon, 13 Nov 95 17:31:01 GMT
Organization: Microserve Information Systems (800)-380-INET
Lines: 17
Distribution: world
Message-ID: <4899ms$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <488fb2$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
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rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.
antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec
radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.polic
y,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.sca
nner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running
,rec.scouting,rec.scuba,rec.skiing.alpine

Burt,

Why are you spamming all these groups?  Many of them have nothing
to do with Amateur Radio.

If you must post this antagonistic nonsense, please restrain yourself.
There are plenty of people to bother on R.R.A.Policy and R.R.A.Misc.

Jack WB3U


From Unknown Thu Nov 16 05:32:39 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!globe.indirect.com!grizzarv
From: [e-mail] (Robert V. Grizzard)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.rad
Subject: cancel <485q5e$[e-mail]>
Date: 12 Nov 1995 21:51:24 GMT
Organization: Internet Direct, Inc.
Lines: 7
Message-ID: <485q8s$[e-mail]>
NNTP-Posting-Host: bud.indirect.com
X-Newsreader: TIN [version 1.2 PL2]
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io.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Control: cancel <485q5e$[e-mail]>
X-Newsreader: TIN [version 1.2 PL2]
X-Newsreader: TIN [version 1.2 PL2]
Distribution:

Article cancelled from within tin [v1.2 PL2]


From Unknown Thu Nov 16 05:32:39 1995
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.misc,rec.radio.amateur.policy
Path: news.epix.net!news.sprintlink.net!mv!usenet
From: [e-mail]
Subject: Re: Do it for the log.
Message-ID: <30a55668.471157580@192.80.84.4>
Organization: At home.
Date: Sun, 12 Nov 1995 02:23:27 GMT
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825d3$[e-mail]>
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Lines: 22
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In <4825d3$[e-mail]>,
   Burt Fisher <Burt Fisher <[e-mail]>> wrote:
[16 lines or so of irrelevant header snipped -- I think he beats out
ARRL bulletins here]

|What others say:

Here follows a four-month old reprint of someone's posting and his
response.  He must really be getting desparate for material.  And I
would really love to know why he felt he had to post it to so many
groups.  Geez, I think he's gone off the deep end (except I thought
he had already).  I mean, rec.roller-coaster?  rec.skiing?

Newsgroups trimmed.

|from unix.ccsnet.com by ccsnet.com with smtp
|Date:         Wed, 5 Jul 1995 15:21:00 EDT
|From: Joe Esposito <[e-mail]>
|Subject:      Duh!

Says it all.



From Unknown Thu Nov 16 05:32:41 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.rad
Subject: Re: Do it for the log.
Date: 12 Nov 1995 11:35:52 GMT
Lines: 33
Message-ID: <484m6o$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825d3$[e-mail]> <[e-mail]>
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[e-mail] (Bruce Micales) wrote:

>In the first instance, I am clearly stating as to why I want your name..I do
>keep a log of my contacts.  Also this information can be used for sending QSL
>cards.  All of this is quickly said by asking for your name for the log.
>However, I guess I could say "I would like to know your name because I am a
>nice guy,, I am keeping a log, and I might send you a QSL card".  Hmmmm, seems
>a bit to much.

You prove my point that hams could give a damn about YOU they want your
name for the LOG so they can get an impersonal QSL card. Frequently I
hear hams on repeaters ask for a name FOR THE LOG, and not even a log for hams
there. Explain?



>Hams are very personable otherwise you would not have FM voice, AM voice, SSB
>voice, or even ATV.
>Bruce Micales

Be serious.
On voice what PERSONAL things do they say?

#================#=====================================================#
|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
|    K1OIK       |  The less you say, the more people will remember    |
#================#=====================================================#
| [e-mail]                                [e-mail] |
#======================================================================#




From Unknown Thu Nov 16 05:32:42 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!news.midplains.net!gw2.att.com!gw1.att.com!cmprime.cis.att.com!anchor.cis.att.com!newsadm
From: [e-mail] (USENet News System Manager)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Folded dipole-multiband
Date: 13 Nov 1995 14:25:40 GMT
Organization: AT&T Lincroft, NJ
Lines: 22
Distribution: world
Message-ID: <487kh4$[e-mail]>
References: <47r8co$[e-mail]> <4817b7$[e-mail]> <485gbm$[e-mail]>
NNTP-Posting-Host: anchor.cis.att.com
X-Newsreader: TIN [version 1.2 PL2]

Thanks Guys for the comments.  I am the originator of this thread, and
so far haven't had a lot of time to continue the experiments so just
let me sumamrize where I am:

the 80 folded dipole DID solve my big problem - the drastic changes in
Z as I QSY up and down the 80 m. band.  Now the tuning is smooth as silk,
all I have to do when QSYing is tune tune one control to bring the
system back to 1:1.  No more changing of taps on the coil.

On 40 it also tunes up snoothly.  Of course I hear lots of signals, LOUD.
I DO get out.  I am a bit concerned about the fellow who said I will have
a direct short across the feedpoint on 40 m. (Am  I operating off the
feeders only ?)  Now I want to get up a single band 40 m antenna to
use as a comparison with this folded dipole just to find out!

So....   see you all next week.  I'll be installing (probably) a sloping
regular old dipole off the tower.  Any one want to meet on the bands this
weekend and do a A-B comparison with me?

Rick  KT2Q




From Unknown Thu Nov 16 05:32:43 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!castle.nando.net!news
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Folded dipole-multiband
Date: 14 Nov 1995 00:05:50 GMT
Organization: News & Observer Public Access
Lines: 15
Message-ID: <488mgu$[e-mail]>
References: <47r8co$[e-mail]> <4817b7$[e-mail]> <485gbm$[e-mail]>
NNTP-Posting-Host: grail1716.nando.net
Mime-Version: 1.0
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To: [e-mail]

[e-mail] (Cecil A. Moore~) wrote:
>I wish we could standardize the language to "voltage", "current",
>and "choke" baluns where the choke type is single-turn and the
>voltage/current types are multiple-turns. Even if it's not 100%
>accurate, it would allow us to communicate mo'betta.
>
>73, Cecil, KG7BK, OOTC  (not speaking for my employer)

HI Cecil! Can you explain the difference between a current balun and a
current choke as I've always heard them called?  Example: I wind about 8
turns of feedline 6" in dia at the feedpoint of my dipole to minimize
feedline radiation...I've always called this a current choke...

73 de Dave WB4IUY



From Unknown Thu Nov 16 05:32:44 1995
Path: news.epix.net!news.sprintlink.net!nuclear.microserve.net!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: Mon, 13 Nov 95 17:12:07 GMT
Organization: Microserve Information Systems (800)-380-INET
Lines: 32
Distribution: world
Message-ID: <4898jf$[e-mail]>
References: <[e-mail]> <47naoh$[e-mail]> <[e-mail]> <47vvpm$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4

   [e-mail] (Cecil A. Moore~) wrote:

>The G5RV was discussed by Bill Orr in the Nov 92 CQ. He compared the
>original design to the W6SAI version. Here are the reported results.
>
>Freq.              SWR-original           SWR-W6SAI version
>                   102'/26.75' no balun   92.6'/37.25' with balun

             <<snip>>

>So both you guys are right. It's a reasonable "all-band" antenna
>but you will be disappointed unless you use an antenna tuner and
>there is almost no broadside radiation above 30m.

I can't help thinking that these SWR ratios are misleading without
considering the feedpoint impedance that results at the junction of
the ladder line and coax.  Those impedances are high on several bands,
and that translates to balun losses.  Similarly, I'm not sure it's
reasonable to discount that impedance on the premise of deleting the
balun, unless the user is willing to put up with feedline radiation
and perhaps shack RF.

Guess I just don't see the use for these antennas.  They may be the
best attempt yet to achieve a reasonable impedance on as many bands as
possible with a single wire, but the key word here is "attempt".  A
trap dipole would be much more useful than the specific feedline
lengths, high SWR tolerance, disregard for transmission line loss and
acceptance of feedline radiation required in order to use the G5RV.

73,

Jack  WB3U


From Unknown Thu Nov 16 05:32:45 1995
Path: news.epix.net!news.sprintlink.net!news.cirrus.com!bug.rahul.net!a2i!infoseek.com!uunet!in2.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 14 Nov 1995 11:18:55 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 34
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Hi Jack,
In article <4898jf$[e-mail]>,
[e-mail] (WB3U) writes:

>I can't help thinking that these SWR ratios are misleading without
>considering the feedpoint impedance that results at the junction of
>the ladder line and coax.

That's where I measured the one I tested.

>Those impedances are high on several bands,
>and that translates to balun losses.

Only on bands where the common mode voltage is high. That all goes back to
the Balun thread we were in. Common mode and transmission line mode
impedances don't necessarily track!

>Similarly, I'm not sure it's
>reasonable to discount that impedance on the premise of deleting the
>balun, unless the user is willing to put up with feedline radiation
>and perhaps shack RF.

I'd ALWAYS use a choke balun.

>Guess I just don't see the use for these antennas.

Then you give the reason ;-)

> They may be the best attempt yet to achieve a reasonable impedance on as
many >bands as possible with a single wire

Cheap and simple. Nuff said!

73 Tom


From Unknown Thu Nov 16 05:32:46 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!usenet.seri.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!btnet!zetnet.co.uk!demon!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: Tue, 14 Nov 95 18:42:45 GMT
Lines: 59
Message-ID: <[e-mail]>
References: <4898jf$[e-mail]> <48afhf$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
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X-Newsreader: News Xpress Version 1.0 Beta #4

Hi Tom,

I don't want to get involved in a long thread right now (famous last
words), but I can't resist a few more comments on this subject.

   [e-mail] (W8JI  Tom) wrote:
>[e-mail] (WB3U) writes:

>>Those impedances are high on several bands,
>>and that translates to balun losses.
>
>Only on bands where the common mode voltage is high.

Whether the balun is most susceptible to common mode or differential
voltage will depend to some extent on the type of balun.  In any event,
how would one predict what the common mode voltage would be unless they
knew everything about the individual installation, or measured the
voltage on an individual basis with the appropriate test equipment?

My point was, when a balun is used, the impedance/voltage at the
feedpoint would be much more critical in determining whether the system
could be expected to work properly than its SWR.  That's particularly
true considering the relatively low (for non-resonant dipoles) range of
SWR quoted by Cecil.

>>Similarly, I'm not sure it's
>>reasonable to discount that impedance on the premise of deleting the
>>balun, unless the user is willing to put up with feedline radiation
>>and perhaps shack RF.
>
>I'd ALWAYS use a choke balun.

So would I, but then there's the susceptibility to power loss and
imbalance as a result of excessive feedpoint impedance/voltage.

>>Guess I just don't see the use for these antennas.
>
>Then you give the reason ;-)

Misleading advertising that works well in conjunction with the lack
of disclosure by tuner manufacturers.  There are still many, many hams
who don't realize that a T-network with a balun is not an appropriate
method of feeding a system that presents high feedpoint impedances.

>> They may be the best attempt yet to achieve a reasonable impedance
>> on as many bands as possible with a single wire
>
>Cheap and simple. Nuff said!

Cheap and simple isn't sufficient to qualify anything as a desirable
antenna.  I'm sure we've both QSO'd plenty of guys who were entirely
satisfied with a piece of RG-8 connected to an end-fed wire or even
their rain gutter.  Actually, I suspect many of those systems are
jhust as efficient as a G5RV, if not more so.

73,

Jack  WB3U


From Unknown Thu Nov 16 05:32:48 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!lll-winken.llnl.gov!venus.sun.com!news2me.EBay.Sun.COM!jethro.Corp.Sun.COM!mandalay!aga
From: [e-mail] (Tony Angerame - Sun SE)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 15 Nov 1995 21:58:37 GMT
Organization: Sun Microsystems Inc.
Lines: 15
Distribution: world
Message-ID: <48dnqd$[e-mail]>
References: <48dgga$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: mandalay.corp.sun.com

I really felt left out not getting in on the G5RV controversy and never can resist
"Beating a dead horse". I have tried both a G5RV with and without baluns and a good
balanced tuner with a dipole fed with open wire line. I currently use an old 275
watt Johnson Matchbox and a 135 foot dipole with bent ends. I know it is not at all
scientific but after using an antenna system for a period of months one develops a
"Feel" for it's performance. I would opinion that the G5RV beat any coax fed dipoles
I had on 80-40-20 while affording much better frequency/swr agility. The ladder line
fed 135 foot dipole and matchbox beats them both. I don't care for any of them
above 20 mters or so because of their unpredictable directivity. Question is where do you find a good balanced tuner like the matchbox? I felt the G5RV wi
transmatch was a darn good compromise. Just qualitative judgements of course.


                                            Tony WA6LZH




From Unknown Thu Nov 16 05:32:49 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 15 Nov 1995 19:53:46 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 34
Distribution: world
Message-ID: <48dgga$[e-mail]>
References: <[e-mail]> <[e-mail]> <47vvpm$[e-mail]> <4898jf$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <4898jf$[e-mail]>,
WB3U <[e-mail]> wrote:

>I can't help thinking that these SWR ratios are misleading without
>considering the feedpoint impedance that results at the junction of
>the ladder line and coax.

Hi Jack, when I get my 300 ohm SWR/Power meter done, I will publish
the G5RV feedpoint impedance at the coax/ladder-line junction. I
know what EZNEC says it is but that's probably high.

>Those impedances are high on several bands,
>and that translates to balun losses.  Similarly, I'm not sure it's
>reasonable to discount that impedance on the premise of deleting the
>balun, unless the user is willing to put up with feedline radiation
>and perhaps shack RF.

On my original G5RV, a few turns of coax cured the shack RF problem.
I used a good antenna tuner and no balun.

>Guess I just don't see the use for these antennas.  They may be the
>best attempt yet to achieve a reasonable impedance on as many bands as
>possible with a single wire, but the key word here is "attempt".

It's hard to beat the performance/cost ratio of a home-brew G5RV. We
are still having balun problems after eliminating the coax. New balanced
antenna tuners seem to be unavailable. Everything seems to be a
compromise. Until we solve the 50ohm=>unknown-balanced-load problem,
like W8JITom sez, the G5RV is not a bad "all-band" antenna. I believe
there is something better, but I don't think traps is it. OTOH, a G5RV
requires a good antenna tuner - most built-in auto-tuners are not that
good.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Thu Nov 16 05:32:50 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (The2X4)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Gaps...the antenna issue that won't die
Date: 11 Nov 1995 17:14:40 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 21
Sender: [e-mail]
Message-ID: <48378g$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <[e-mail]>, [e-mail] writes:

>
>In a nutshell: I own a Gap,  model DX-VIII. Its an okay and sometimes
good
>antenna.
>But probably not a great antenna. Definitely not a dummy load.

I wish you hadn't mentioned that dummy load.

IMOO:
I still say compared to common ol' antennas, referring to a $10 piece of
wire in a V or as a dipole and that's how its done, the GAP is one
biiiiiigggg, expensive, overrated  external dummy load.

You would have been an S9 had you put that kind of money in a simple wire
radiator system that works all the time.


Carl
N9EFJ


From Unknown Thu Nov 16 05:32:51 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news.nic.surfnet.nl!sun4nl!inter.nl.net!waasdorp
From: Coen Waasdorp <[e-mail]>
Subject: Re: Gaps...the antenna issue that won't die
X-Nntp-Posting-Host: ldn99-16.leiden.nl.net
Message-ID: <[e-mail]>
Sender: [e-mail] (News at news)
Organization: NL Net
X-Newsreader: Turnpike Version 1.06 <V3qIi1cDYF6SVYARD7$C+H0$PN>
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Lines: 36

In article <48378g$[e-mail]>, The2X4 <[e-mail]>
writes
>In article <[e-mail]>, [e-mail] writes:
>
>>
>>In a nutshell: I own a Gap,  model DX-VIII. Its an okay and sometimes
>good
>>antenna.
>>But probably not a great antenna. Definitely not a dummy load.
>
>I wish you hadn't mentioned that dummy load.
>
>IMOO:
>I still say compared to common ol' antennas, referring to a $10 piece of
>wire in a V or as a dipole and that's how its done, the GAP is one
>biiiiiigggg, expensive, overrated  external dummy load.
>
>You would have been an S9 had you put that kind of money in a simple wire
>radiator system that works all the time.
>
>
>Carl
>N9EFJ

Hi Carl,

IMHO it's quite diffecult to have for $ 10 an antenna system in a small
backyard covering 8 bands.

The investment in traps, or multi dipoles, would be far greater, and not
to speak about the space requirements.

73's
--
Coen Waasdorp
PA0COE


From Unknown Thu Nov 16 05:32:52 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!cs.utexas.edu!usc!ccnet.com!rahul.net!a2i!news.clark.net!usenet
From: Jack Jeffery <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Good Magnet Wire Source ?
Date: 11 Nov 1995 11:44:44 GMT
Organization: Clark Internet Services, Inc.
Lines: 15
Message-ID: <4822bc$[e-mail]>
NNTP-Posting-Host: jeffery.clark.net
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

Does anyone have a recommendation for a good source of magnet wire?  I
use magnet wire for making my antennas invisible (I have antenna
restrictions at my QTH), and have been buying Radio Shack's wire.

I get the feeling I'm paying too much!  Also, Radio Shack only sells
their wire as a 3-spool package, each spool having a different guage.

I've checked Radioware's catalog, but didn't find any there.

Thanks a lot for any suggestions!

73,

Jack, KB4CG



From Unknown Thu Nov 16 05:32:53 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!soap.news.pipex.net!pipex!dish.news.pipex.net!pipex!lade.news.pipex.net!pipex!europa.chnt.gtegsc.com!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netcom.com!ghiscox
From: "George L. Hiscox" <[e-mail]>
Subject: Re: Good Magnet Wire Source ?
Content-Type: text/plain; charset=us-ascii
Message-ID: <[e-mail]>
To: [e-mail]
Sender: [e-mail]
Content-Transfer-Encoding: 7bit
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
References: <4822bc$[e-mail]>
Mime-Version: 1.0
Date: Wed, 15 Nov 1995 02:42:32 GMT
X-Mailer: Mozilla 1.2N (Windows; I; 16bit)
Lines: 15

You might want to take a look at some very thin stranded copper
clad steel wire available from "The Wireman", 1-800-727-9473.
It is flexible and has a black coating on it which ads to it's
value in constructing "stealth" antennas.  It's not cheap at
13/ft. but it is very strong so you will just have to build your
antenna once.  The magnet wire is very soft and fragile stuff.

73/George

--
| George L. Hiscox                 | Very funny Scotty... Now |
| [e-mail]               | beam down my clothes !!! |
| WA6RIK @ WB6YMH.#socal.ca.usa.na | ^^^^^^^^^^^^^^^^^^^^^^^^ |




From Unknown Thu Nov 16 05:32:54 1995
Path: news.epix.net!news.sprintlink.net!news.grove.net!usenet
From: [e-mail] (Bill Grove)
Newsgroups: rec.radio.shortwave,rec.radio.scanner,rec.radio.swap,rec.radio.amateur.antenna,rec.radio.amateur.equipment
Subject: Grove's OnLine Interactive Catalog
Date: Sun, 12 Nov 1995 17:32:04 GMT
Organization: Grove Enterprises, Inc.
Lines: 10
Message-ID: <485414$[e-mail]>
NNTP-Posting-Host: bill.grove.net
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.radio.shortwave:65974 rec.radio.scanner:40627 rec.radio.swap:50870 rec.radio.amateur.antenna:17068 rec.radio.amateur.equipment:21367

Grove Enterprises officially announces the arrival of its new
Interactive Online Catalog.  Along with specials just for the folks on
the Internet, we also offer samples of Monitoring Times and Satellite
Times.  To check out the latest and greatest radio source on the web,
direct your browsers to:

www.grove.net

These pages are NetScape 1.1 compatible.



From Unknown Thu Nov 16 05:32:55 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!elroy.jpl.nasa.gov!usc!news.cerf.net!news.titan.com!usenet
From: Bill Bennett <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: IC-706: what's best 2m/6m mobile antenna?
Date: 14 Nov 1995 21:12:32 GMT
Organization: The Titan Corporation, San Diego, CA, USA
Lines: 4
Message-ID: <48b0o0$[e-mail]>
References: <48amjl$[e-mail]>
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To: [e-mail]

the larsen 6meter mobile works fine as a 5/8 wave 2meter however this is
a mobile you would have to build a counterpoise(ground plane)
i have a antenna specialists 6m and it matches nicely at 6 also



From Unknown Thu Nov 16 05:32:56 1995
Path: news.epix.net!news.sprintlink.net!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Chris Boone <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: IC-706: what's best 2m/6m mobile antenna?
Date: 16 Nov 1995 00:13:31 GMT
Organization: GSU/ENTERGY
Lines: 15
Message-ID: <48dvnb$jj1$[e-mail]>
References: <48amjl$[e-mail]>

What brand of 5/8wave 2 mtr antenna did you try? You may wish to
try cutting the 2mtr antenna a little for better resonance in the
52 Mhz band....(I use Signals 2mtr antennas on 6 with little
problem!)

73
Chris
WB5ITT
(a 2/6 mtr diplexer is EASY to build...)

--

Chris Boone WB5ITT                     Compuserve 72732,2610
PO Box 3102                            FIDO 1:106/4267
Conroe, Texas 77305-3102               Sysop WBBS @ 409-447-4267


From Unknown Thu Nov 16 05:32:57 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!swrinde!cs.utexas.edu!usc!chi-news.cic.net!newsfeed.internetmci.com!news.kei.com!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: 12 Nov 1995 03:39:18 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 10
Distribution: world
Message-ID: <483q96$[e-mail]>
References: <47n930$a3k$[e-mail]> <47td9r$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com
Xref: news.epix.net rec.radio.amateur.antenna:17064 rec.radio.amateur.equipment:21358 rec.radio.amateur.misc:94204 uk.radio.amateur:9094

In article <47td9r$[e-mail]>,
Thomas  Brockdorf  <[e-mail]> wrote:

>Don't be worried about buying the 706. It is an excellent radio!
>I got mine last week, and I love it.

After the xmit open mod, will it transmit on 47 MHz? A Red-Cross
friend of mine wants to know.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Thu Nov 16 05:32:57 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: 14 Nov 1995 16:00:17 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 11
Distribution: world
Message-ID: <48aeeh$[e-mail]>
References: <47n930$a3k$[e-mail]> <47td9r$[e-mail]> <483q96$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com
Xref: news.epix.net rec.radio.amateur.antenna:17111 rec.radio.amateur.equipment:21422 rec.radio.amateur.misc:94300 uk.radio.amateur:9148

In article <483q96$[e-mail]>,
Cecil A. Moore~ <[e-mail]> wrote:

>After the xmit open mod, will it transmit on 47 MHz? A Red-Cross
>friend of mine wants to know.

Mike, N5AQM, answered the question for me. FYI, above 54 MHz, the IC706 will
not transmit on anything except 144-148 MHz. It will transmit on any frequency
below 54 MHz.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Thu Nov 16 05:32:59 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!ftpbox!mothost!lmpsbbs!NewsWatcher!user
From: [e-mail] (Karl Beckman)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: Wed, 15 Nov 1995 09:19:04 -0500
Organization: Mot RNSG - Private Data
Lines: 34
Distribution: world
Message-ID: <CSLE87-1511950919040001@145.39.1.10>
References: <47n930$a3k$[e-mail]> <47td9r$[e-mail]> <483q96$[e-mail]> <48aeeh$[e-mail]>
NNTP-Posting-Host: 145.39.1.10
Xref: news.epix.net rec.radio.amateur.antenna:17130 rec.radio.amateur.equipment:21451 rec.radio.amateur.misc:94355 uk.radio.amateur:9169

In article <48aeeh$[e-mail]>, [e-mail]
(Cecil A. Moore~) wrote:

> In article <483q96$[e-mail]>,
> Cecil A. Moore~ <[e-mail]> wrote:
>
> >After the xmit open mod, will it transmit on 47 MHz? A Red-Cross
> >friend of mine wants to know.
>
> Mike, N5AQM, answered the question for me. FYI, above 54 MHz, the IC706 will
> not transmit on anything except 144-148 MHz. It will transmit on any frequency
> below 54 MHz.
>
> 73, Cecil, KG7BK, OOTC  (not speaking for my employer)

Cecil, you might want to pass along a reminder to your co-worker:

The national headquarters Communications Group of the American National
Red Cross strictly enforces the ANRC policy of compliance with the FCC
rules; this includes Type Acceptance of all radio equipment used on ANRC
frequencies.  "483q96$[e-mail]" is seriously jeopardizing
his ANRC status as either volunteer or professional staff.  At the same
time he puts at risk both the ANRC local chapter radio license and his own
amateur license.  The IC706 does NOT meet the FCC's technical requirements
and is not permitted by ANRC.
--
Karl Beckman, P.E.                <    If our English language is so   >
Motorola RNSG Pvt Data            <  precise, why do you drive on the  >
Schaumburg, IL  /  Parma, OH      <  parkway and park on the driveway? >
Amateur radio WA8NVW                       NavyMARS NNN0VBH @ NOGBN.NOASI
** Opinions expressed here do not represent the views of Motorola Inc. **
By sending unsolicited commercially-oriented e-mail to this address, the
sender agrees to pay a $100 fee to the recipient for proofreading services.
--


From Unknown Thu Nov 16 05:33:00 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!torn!news.ccs.queensu.ca!news.rmc.ca!goyette
From: [e-mail] (goyette)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Impedance Matching Problem- Help!
Date: 11 Nov 1995 15:28:15 GMT
Organization: Royal Military College
Lines: 26
Message-ID: <482fef$[e-mail]>
References: <47rr12$[e-mail]> <47ssfm$[e-mail]>
NNTP-Posting-Host: goyette.anx.rmc.ca
X-Newsreader: News Xpress Version 1.0 Beta #3

In article <47ssfm$[e-mail]>,
   [e-mail] () wrote:
>>I spotted a 40 Meter Loop antenna design in the "Circuit Circus"
column
>>of the November 95 Popular Electronics Magazine.
>
>If I understand ig corectly the loop, the 4 turn transformer winding
and
>the capacitor are all in series.

>No. You forget that the transformer winding + core losses are part of
the
>deal. so the antenna will "work" because Rl becomes high enough.
>
How would I theoretically calculate these based on the parameters I
have?

>May be you should adhere to the well proven method of matching with a
>small air loop inside your antenna loop.
>
I've never heard of this (I'm a newby). Could you elaborate?
>
>
Thanks a bzillion.

[e-mail]


From Unknown Thu Nov 16 05:33:01 1995
Path: news.epix.net!news.sprintlink.net!in2.uu.net!newsfeed.internetmci.com!nuclear.microserve.net!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Input Baluns
Date: Wed, 15 Nov 95 07:26:30 GMT
Organization: Microserve Information Systems (800)-380-INET
Lines: 22
Distribution: world
Message-ID: <48df1t$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4

In my search for the ultimate tuner, I'm looking for a way to immunize
a balun from common mode voltage when it's placed at the input to a
balanced PI or T-network.  Previously, I used a balun wound in the
form of a 1:1 isolation transformer, but my results indicate it
isn't effective when faced with high common mode voltages.

Now I'm wondering if the problem might not have been that the
transformer was wound bifilar?  In that configuration, high common
mode voltage might have an easy path through the interwinding
capacitance.  That could explain the loss of balance I experienced
in my single-ended tuner when common mode voltage increased.

I'm considering winding another ferrite core isolation transformer,
but this time with each winding on opposite sides of the core.  Before
I do this though, does anyone here know whether the coefficient of
coupling is acceptable through this type transformer?  Also, will the
frequency response be adversely affected as a result of the windings
being physically separated?

73,

Jack  WB3U


From Unknown Thu Nov 16 05:33:02 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news1.digex.net!col1.caribsurf.com!root
From: "Joseph P. Feehan" <[e-mail]>
Newsgroups: rec.radio.amateur,rec.radio.amateur.antenna,rec.radio.amateur.digital,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment
Subject: Re: INTERESTING NEW WWW PAGE
Date: 11 Nov 1995 22:10:58 GMT
Organization: Myowncompany
Lines: 8
Message-ID: <48371i$[e-mail]>
References: <47s8l9$[e-mail]>
NNTP-Posting-Host: 205.214.206.33
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.2N (Windows; I; 16bit)
To: [e-mail]
Xref: news.epix.net rec.radio.amateur.antenna:17043 rec.radio.amateur.digital.misc:12568 rec.radio.amateur.equipment:21338

Greetings from the land of endless summer -- Tortola Island,
British Virgin Islands.
Congrats on your new page.  Obviously you are a heads-up company.
Too bad I can't visit your store.  Will keep looking for your
product info.

Joe, VP2VBL.



From Unknown Thu Nov 16 05:33:03 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!nwnews.wa.com!news1.halcyon.com!chinook!ki7zd
From: [e-mail] (Randy Seacat)
Newsgroups: rec.radio.amateur.antenna
Subject: JPOLE.BMP grab this! How to build.
Date: 12 Nov 1995 12:51:32 GMT
Organization: Northwest Nexus Inc.
Lines: 18
Message-ID: <484qkk$[e-mail]>
NNTP-Posting-Host: chinook.halcyon.com


I know this is not a binary group, but I dont think this will hurt.

Here is a complete description, with drawings, of how to build a Super-J.

I build these antennas all the time for people, and with so many asking
how, I htought putting this file together would help. Pass it around, and
enjoy.

If you have any questions, please email me.

[e-mail]

--
/-/-/  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  | Amateur Radio Station                       Inet: [e-mail]
  | KI7ZD
  | WWA  CN87  73's    _._ .. __... __.. _..   "If RST > 519, Reduce Power!"


From Unknown Thu Nov 16 05:33:04 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (james-m)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: JPOLE.BMP grab this! How to build.
Date: 13 Nov 1995 08:12:36 GMT
Organization: AE4BR
Lines: 33
Message-ID: <486ulk$[e-mail]>
References: <484qkk$[e-mail]>
NNTP-Posting-Host: ix-sav-ga1-22.ix.netcom.com
Mime-Version: 1.0
Content-Type: Text/Plain; charset=US-ASCII
X-NETCOM-Date: Mon Nov 13 12:12:36 AM PST 1995
X-Newsreader: WinVN 0.99.6

In article <484qkk$[e-mail]>, [e-mail]

says...
>
>
>I know this is not a binary group, but I dont think this will hurt.
>
>Here is a complete description, with drawings, of how to build a
Super-J.
>
>I build these antennas all the time for people, and with so many asking
>how, I htought putting this file together would help. Pass it around,
and
>enjoy.
>
>If you have any questions, please email me.
>
>[e-mail]
>
>--
>/-/-/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  | Amateur Radio Station                       Inet: [e-mail]
>  | KI7ZD
>  | WWA  CN87  73's    _._ .. __... __.. _..   "If RST > 519, Reduce
Power!"

I just asked another local ham tonight if he had this information..
Thanks to your post, I don't have to look any further..

Thanks
Don
AE4BR



From Unknown Thu Nov 16 05:33:05 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.msfc.nasa.gov!bcm.tmc.edu!news.tamu.edu!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Low Band DX'ing bu ON4UN...where?
Date: 13 Nov 1995 22:39:15 GMT
Organization: Texas A&M University, College Station, TX
Lines: 25
Message-ID: <488hej$[e-mail]>
References: <4884ta$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: 128.194.44.211
X-Newsreader: IBM NewsReader/2 v1.2

In <4884ta$[e-mail]>, [e-mail] (Terry Hubbard) writes:
>I am trying to locate the book Low Band DX'ing and can't find it anywhere
>in milwaukee. Can someone give me a source for ordering this book. Thanks
>for the help.
>
>--
>-----
>Terry Hubbard                  Internet:[e-mail]
>Cudahy, WI                     Compuserve: 75347,2614
>

The ARRL distributes it in the USA.  There are now two editions out there.
The old one was a pinkish cover.  The new one is creme colored.  You can
order it from the ARRL for $20, I think.  ARRL, 225 Main Street,
Nwewington, CT 06111.

Alternative, Gerald Williams, who runs Texas Towers in Plano, TX stocks
this book.  Texas Towers can be reached at 1-800-272-3467.  Gerald, K5GW,
is a darned nice guy who also like low band - has a 3el rotary array for 80M
up at 195 feet on his farm.

:)

Mike W5WQN as a guest at leviathan.tamu.edu



From Unknown Thu Nov 16 05:33:06 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Maximizing vertical antenna performance
Date: 11 Nov 1995 17:15:56 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 16
Sender: [e-mail]
Message-ID: <4837as$[e-mail]>
References: <4804nd$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

>You may have heard the old saying "a vertical antenna radiates equally
poorly
>in all directions".  It's not just a cute saying... it's (usually) the
truth.
>73, Bill W7LZP

Hi Bill,
If I was a vertical I'd be hurt by that.  Aren't you being a bit unkind to
verticals :-) ?
I have a 35 foot top loaded vertical that ties my dipole (at 135 feet
high) into Europe night after night on the low end of 80, and the soil
conductivity here in Atlanta is only a few mS/M. On 20 up that may be a
general rule with ground mounted verticals, but on 40 through 160 I've
always found verticals with good ground systems work very well.
Of course, results vary with effort in the ground system.
73 Tom


From Unknown Thu Nov 16 05:33:07 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!psgrain!nntp.teleport.com!usenet
From: Daniel Calzaretta <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: NEED ANTENNA ADVICE PLEASE!
Date: 15 Nov 1995 21:21:25 GMT
Organization: Pacific Crest Community School
Lines: 10
Message-ID: <48dlkl$[e-mail]>
NNTP-Posting-Host: ip-pdx05-07.teleport.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

>
> --------------------------------------------------------------------
> I am looking for an 80-6 meter vertical for either roof or ground mount that doesn't need an extensive radial system (I have a sma=
ll yard).  Any advice?  I want to get back on the air ASAP!

Thanks,

Dan N9BCC
[e-mail]



From Unknown Thu Nov 16 05:33:08 1995
Path: news.epix.net!news.sprintlink.net!nuclear.microserve.net!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: NEED ANTENNA ADVICE PLEASE!
Date: Wed, 15 Nov 95 10:46:25 GMT
Organization: Microserve Information Systems (800)-380-INET
Lines: 26
Distribution: world
Message-ID: <48dqop$[e-mail]>
References: <48dlkl$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4

   Daniel Calzaretta <[e-mail]> wrote:

> I am looking for an 80-6 meter vertical for either roof or ground
> mount that doesn't need an extensive radial system (I have a small
> yard).  Any advice?  I want to get back on the air ASAP!
>
>Thanks,
>
>Dan N9BCC
>[e-mail]

If you mount the vertical on the ground, you *will* need an extensive
radial system for good performance.  This applies regardless of
whether the vertical is supplied from the factory with counterpoises.

Without knowing your exact situation, my advice would be to purchase
a Cushcraft R7 for 40-10M and mount it above your roof.  Then, throw
up a monoband dipole for 80M, and an inexpensive 1/4 wave for 6M.

I know this isn't exactly what you're looking for, but from what I've
seen, commercial Amateur antennas that attempt to cover this wide a
range with a single radiator seriously compromise system efficiency.

73 & best of luck in your search,

Jack  WB3U


From Unknown Thu Nov 16 05:33:10 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Tom Griffin)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: NEED CASH?!!...Don't You?
Date: Fri, 10 Nov 1995 04:33:14 -0500
Organization: Netcom
Lines: 17
Message-ID: <481qu5$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]>
NNTP-Posting-Host: ix-col-sc1-05.ix.netcom.com
X-NETCOM-Date: Sat Nov 11  1:38:13 AM PST 1995
X-Newsreader: Forte Agent .99b.112
Xref: news.epix.net rec.puzzles:52014 rec.puzzles.crosswords:4582 rec.pyrotechnics:37596 rec.radio.amateur.antenna:17036 rec.radio.amateur.digital.misc:12562 rec.radio.amateur.equipment:21330 rec.radio.amateur.homebrew:11515 rec.radio.amateur.misc:94163 rec.radio.amateur.policy:31793 rec.radio.amateur.space:5680 rec.radio.cb:24376 rec.radio.noncomm:4962 rec.radio.scanner:40578 rec.radio.shortwave:65910 rec.radio.swap:50767 rec.roller-coaster:23161 rec.running:45166 rec.scouting:37574 rec.scuba:80139 rec.skiing.alpine:32754

[e-mail] (Bill Nelson) wrote:

>Please people, don't post all sorts of responses to this spam - it will not
>do any good.  What will work is sending a complaint to [e-mail],
>including the complete article.
>
>You will find that the person will have a severe "talking to" by the
>administrator - if the account is not pulled. Most universities have
>a statement in their user agreement that such posts are illegal and
>ground for immediate account revocation.
>
>Bill

No sooner said than done.

Tom



From Unknown Thu Nov 16 05:33:11 1995
Newsgroups: rec.radio.amateur.antenna
Subject: NEED CASH?!!...Don't You?
From: [e-mail] (Clint Bradford)
Path: news.epix.net!news.sprintlink.net!holonet!colossus.holonet.net!wwswinc!clint.bradford
Distribution: world
Message-ID: <[e-mail]>
Date: Sun, 12 Nov 95 11:34:00 -0500
Organization: WoodyWare Software, Inc. - 516-736-6662
Lines: 13

Subject: NEED CASH?!!...Don't You?

>>Follow these instructions EXACTLY...

>>5. Kent Backman 1370 Ululani St. #B415 Hilo, HI  96720

There's his name and address, folks!


Clint Bradford
---
 * TLX v4.00 * If there's one thing I can't stand, it's intolerance.
 ■ wcECHO 4.1 ≈ AR-Net: ATTENTION to Details ■ Mira Loma, CA ■ 909-681-6221


From Unknown Thu Nov 16 05:33:12 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!elroy.jpl.nasa.gov!ncar!ra.cgd.ucar.edu!tomas
From: [e-mail] (Bob Tomas)
Newsgroups: rec.radio.amateur.antenna
Subject: phone number for the people at butternut electronics
Date: 15 Nov 1995 17:40:13 GMT
Organization: Climate and Global Dynamics Division/NCAR, Boulder, CO
Lines: 6
Message-ID: <48d8lt$[e-mail]>
NNTP-Posting-Host: ra.cgd.ucar.edu

Can someone please provide me with a current phone number for
Butternut electronics?

Thanks.

Bob


From Unknown Thu Nov 16 05:33:13 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!usenet.eel.ufl.edu!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!newsfeed.internetmci.com!in1.uu.net!bashful.einsteininfo.com!bashful.einsteininfo.com!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: portable phone?
Date: 15 Nov 1995 23:40:04 -0500
Organization: # Sirius Cybernetics, Sirius City branch
Lines: 8
Message-ID: <48efb5$[e-mail]>
NNTP-Posting-Host: bashful.einsteininfo.com
X-Newsreader: TIN [version 1.2 PL2]

I'm aware that this may not be the correct group to post this to,but I
can't find anything closer.
I'd like to extend the usable range of my portable phone,and was
wondering if there is a simple hookup or antenna design that I could
put on the outside of the house to do so.I often take the phone outside
with me to work on the car/truck and unless I'm close,it don't work so
good.I only want about a one hundred foot increase.Any ideas?
       ***thanx***


From Unknown Thu Nov 16 05:33:14 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!geraldo.cc.utexas.edu!edb252e.edb.utexas.edu!user
From: [e-mail] (John Moore)
Newsgroups: rec.radio.amateur.antenna
Subject: Radio Shack Antenna Rotor
Date: Mon, 13 Nov 1995 10:17:48 -0700
Organization: UTAUSTIN
Lines: 12
Message-ID: <[e-mail]>
NNTP-Posting-Host: edb252e.edb.utexas.edu

I was given a new, unused, RS rotor.  It did not come with a controller
however.  It uses five wire cable.  I know that some RS employees hang out
here and wondered if they could tell me if the control boxes are still
available.  Or, I guess I could homebrew a controller.  What are the 5
inputs?  What voltage do these things use.  I hope to use it to rotate a
2m or 6m beam.
If not it will find a spot in my garage along with other gifts that were
too good to pass up.

Thanks,

AB5YQ John


From Unknown Thu Nov 16 05:33:15 1995
Path: news.epix.net!news.sprintlink.net!news.omnes.net!news.sinet.slb.com!news
From: [e-mail] (Your Name Here)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Radio Shack Antenna Rotor
Date: 15 Nov 1995 19:49:53 GMT
Organization: Your Organization
Lines: 30
Message-ID: <48dg91$[e-mail]>
References: <[e-mail]> <488hko$[e-mail]>
Reply-To: gcl
NNTP-Posting-Host: vaxport.red-deer.dowell.slb.com
X-Newsreader: WinVN 0.90.4

In article <488hko$[e-mail]>, [e-mail] (John Minger) says:
>
>In article <[e-mail]>,
>John Moore <[e-mail]> wrote:
>>I was given a new, unused, RS rotor.  It did not come with a controller
>>however.  It uses five wire cable.  I know that some RS employees hang out
>>here and wondered if they could tell me if the control boxes are still
>>available.  Or, I guess I could homebrew a controller.  What are the 5
>>inputs?  What voltage do these things use.  I hope to use it to rotate a
>>2m or 6m beam.
>>If not it will find a spot in my garage along with other gifts that were
>>too good to pass up.
>
>Good luck, the latest bargain rotator I bought there has only 3 wires.
>So far it works fine on a little 5 element vhf beam.
>
>73, John
>--
>___________________________________________________________________________
>John A Minger    KE6DTC          Opinions expressed are those of the author
>Los Angeles, CA                  and not those of anyone or anything else.

Most of the Radio Shack rotor controlers I played with were 5 wire systems.
Two of them were for the rotor motor which ran around 30 volts AC,they
use a capacitor for phase shifting to get direction control.the other 3
wires are for position sensing.There is a potentiometer in the rotor which
varies resistance when the rotor turns.
I hope this helps..

Skip MacAulay, VE6BGT


From Unknown Thu Nov 16 05:33:16 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!torn!nott!bcarh189.bnr.ca!nrtphba6.bnr.ca!brtph500.bnr.ca!news
From: Raul Salazar <[e-mail]>
Newsgroups: soc.culture.venezuela,soc.culture.uruguay,soc.culture.spain,soc.culture.peru,soc.culture.mexican.american,soc.culture.latin-america,soc.culture.ecuador,soc.culture.cuba,soc.culture.colombia,soc.culture.chile,soc.culture.bolivia,soc.culture.argentina,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: RADIOAFICIOANDOS ENLAZADOS VIA INTERNET
Date: 14 Nov 1995 19:28:32 GMT
Organization: Bell Northern Research
Lines: 6
Message-ID: <48aql0$[e-mail]>
References: <[e-mail]> <48844s$[e-mail]>
NNTP-Posting-Host: brtph597.bnr.ca
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1 (X11; I; HP-UX A.09.05 9000/712)
X-URL: news:48844s$[e-mail]
Xref: news.epix.net soc.culture.venezuela:42960 soc.culture.uruguay:4322 soc.culture.spain:81016 soc.culture.peru:10282 soc.culture.mexican.american:7617 soc.culture.latin-america:38780 soc.culture.ecuador:3956 soc.culture.cuba:29678 soc.culture.colombia:11600 soc.culture.chile:30851 soc.culture.bolivia:9913 soc.culture.argentina:26700 rec.radio.amateur.misc:94308 rec.radio.amateur.homebrew:11572 rec.radio.amateur.equipment:21427 rec.radio.amateur.digital.misc:12627 rec.radio.amateur.antenna:17115

Por primera vez veo un cross-posting que valio
la pena.
Ojala que este tipo de informacion (calidad)
continue.
Raul



From Unknown Thu Nov 16 05:33:17 1995
Path: news.epix.net!news.sprintlink.net!news.inc.net!news.uoregon.edu!chi-news.cic.net!news.math.psu.edu!news.cac.psu.edu!usenet
From: [e-mail] (Alvin Wang)
Newsgroups: rec.radio.amateur.antenna
Subject: Recommendations for Mobile Scanner Antenna
Date: 11 Nov 1995 17:04:21 GMT
Organization: Intercollegiate Taiwanese-American Students Association
Lines: 17
Message-ID: <482l2l$[e-mail]>
NNTP-Posting-Host: anw104.rh.psu.edu
Mime-Version: 1.0
X-Newsreader: WinVN 0.93.14

Hey All!

I'm looking for recommendations on a good mobile antenna to use with my
BCT-7.  Are the "converters" that let you use your regular AM-FM antenna
with a scanner any good?  I realize that nothing would compare to a
dedicated scanner antenna, but I don't really want to drill holes or use
a magnetic mount antenna.  Since part of what I want to monitor is the CB
band, I guess I should rule out glass mount antennas because I understand
that they transmit very little signal at low frequencies.  Any
recommendations you can give me would be great!

Thanks in advance!

- Alvin Wang
[e-mail]




From Unknown Thu Nov 16 05:33:18 1995
Path: news.epix.net!news.sprintlink.net!nuclear.microserve.net!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Replies to Burt Fisher are Spamming the Net
Date: Mon, 13 Nov 95 17:37:40 GMT
Organization: Microserve Information Systems (800)-380-INET
Lines: 9
Distribution: world
Message-ID: <489a3b$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4
Xref: news.epix.net rec.puzzles:52078 rec.puzzles.crosswords:4604 rec.pyrotechnics:37658 rec.radio.amateur.antenna:17107 rec.radio.amateur.digital.misc:12619 rec.radio.amateur.equipment:21418 rec.radio.amateur.homebrew:11566 rec.radio.amateur.misc:94290 rec.radio.amateur.policy:31853 rec.radio.amateur.space:5743 rec.radio.cb:24437 rec.radio.noncomm:4975 rec.radio.scanner:40688 rec.radio.shortwave:66056 rec.radio.swap:50964 rec.roller-coaster:23193 rec.running:45265 rec.scouting:37641 rec.scuba:80283 rec.skiing.alpine:32899

To all readers:

Please check the "Post To:" or "Newsgroups:" listing in your
newsreader before responding to Burt Fisher.  He is spamming many
groups with his posts and your followups are doing the same.

Thanks,

Jack


From Unknown Thu Nov 16 05:33:19 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!not-for-mail
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Request for help w/portable satcom
Date: 12 Nov 1995 17:43:51 GMT
Organization: Clark Internet Services, Inc., Ellicott City, MD USA
Lines: 13
Message-ID: <485bon$[e-mail]>
NNTP-Posting-Host: clark.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Newsreader: TIN [UNIX 1.3 950726BETA PL0]


[ Article reposted from rec.radio.amateur.space ]
[ Author was  ]
[ Posted on 12 Nov 1995 17:39:29 GMT ]

I am planning a hiking and backpacking trip and would like to try
portable packet ops via satellite. I am familiar with packet but have
never done any sat work.  Is it feasbile to do satellite packet in the
field with a handheld and "portable" antenna?  Any suggestions/advice
would be much appreciated.  Thanks.

Craig Peterson, N3DCT
[e-mail]


From Unknown Thu Nov 16 05:33:20 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!news.cc.nctu.edu.tw!serv.HiNet.net!news.uoregon.edu!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!cs.utexas.edu!usc!chi-news.cic.net!newsfeed.internetmci.com!in2.uu.net!wb3ffv!news.scn.org!scn.org!bb840
From: [e-mail] (James Aeschliman)
Subject: Re: rfi /light dimers
Message-ID: <[e-mail]>
Sender: [e-mail]
Reply-To: [e-mail] (James Aeschliman)
Organization: Seattle Community Network
References: <4817jb$[e-mail]>
Date: Sat, 11 Nov 1995 18:53:30 GMT
Lines: 14


In a previous article, [e-mail] () says:

>
>can any one help with silencing light dimer / triac noise 80 meters
>

You won't like this answer, but if it's your own, I'd remove it.
I found when I used a dimmer we never dimmed the lights anyway.
Someone else probably can suggest something more constructive.

--
Jim Aeschliman                      [e-mail]
Black Diamond, Washington           KD7MK


From Unknown Thu Nov 16 05:33:21 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netcom.com!charles1
From: [e-mail] (charles copeland)
Subject: Re: rfi /light dimers
Message-ID: <[e-mail]>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
References: <4817jb$[e-mail]> <[e-mail]>
Date: Sat, 11 Nov 1995 19:58:05 GMT
Lines: 21
Sender: [e-mail]

In article <[e-mail]>, James Aeschliman <[e-mail]> wrote:
>
>In a previous article, [e-mail] () says:
>
>>
>>can any one help with silencing light dimer / triac noise 80 meters
>>
>
>You won't like this answer, but if it's your own, I'd remove it.
>I found when I used a dimmer we never dimmed the lights anyway.
>Someone else probably can suggest something more constructive.

Triac dimmers slice up AC power to provide partial power.
The sharp corners of the slice produce a lot of RFI noise.
Junk the triac dimmer.

A variac could replace it. This is a transformer with a variable
secondary. They usually weight quit a bit, but its an option.





From Unknown Thu Nov 16 05:33:22 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!prodigy.com!usenet
From: [e-mail] (Chris Adams)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: rfi /ligth dimers
Date: 14 Nov 1995 19:19:37 GMT
Organization: Prodigy Services Company  1-800-PRODIGY
Lines: 38
Distribution: world
Message-ID: <48aq49$[e-mail]>
References: <4817jb$[e-mail]>
NNTP-Posting-Host: inugap3.news.prodigy.com
X-Newsreader: Version 1.2

<[e-mail]> wrote:
>
>
>can any one help with silencing light dimer / triac noise 80 meters


Here is my recent experience (last night).  We have a number of light
dimers
in our house (be they traics or whatever).  Certainly no conscious effort
was
made to select quiet ones when they were installed as getting re-involved
in
ham radio was light years from my mind.

However, now that I have become active again, I had a problem with a
single
dimmer.  Yesterday I purchased a Carlon Precision Controls Rotary Dimmer,

with FRI Suppression, model SDR600A.  The difference was dramatic.

Noise
                             3550                             3980
Before               S9+20                             S9
After                    S5                                   S0

The S5 noise is not from the SDR600A.  In fact I had almost everything in
the house turned off, including the power supply for the thermostats!  It
is either coming from the power lines or a neighbors house.

This model does have a plastic case, not a metal one, but it sure fixed
the problem


-
  CHRIS ADAMS  [e-mail]

  KE0RD    xN4VI, WB4LHK, WN4LHK



From Unknown Thu Nov 16 05:33:23 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Rules of ham DUMB.
Date: 11 Nov 1995 21:42:40 GMT
Lines: 22
Message-ID: <4835cg$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120>
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Ham operator Jokes:

1.  What is the thinnest book in the world?
    What hams know about women.

2.  How does a ham take a bubble bath?
    He eats beans for dinner.

3.  What's a ham's idea of foreplay?
    A half hour of contesting.

4.  How can you tell if a ham is sexually excited?
    If he's still breathing.

5.  How many hams does it take to change a roll of toilet paper?
     We don't know...it has never happened.

6.  What's a ham's idea of helping with the housework?
     Lifting his leg so you can vacuum.

7.  What does a ham consider a seven course meal?
     A hot dog and a six pack of beer.


From Unknown Thu Nov 16 05:33:24 1995
Path: news.epix.net!news.sprintlink.net!newsat!uswc.uswest.com!usenet
From: "Dennis A. Mason" <damason>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Rules of ham DUMB.
Date: 12 Nov 1995 03:09:03 GMT
Organization: USWest SA news server
Lines: 2
Message-ID: <483ogf$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]>
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well burt sounds like you are very educated.



From Unknown Thu Nov 16 05:33:25 1995
Path: news.epix.net!news.sprintlink.net!news.inc.net!uwm.edu!lll-winken.llnl.gov!decwrl!amd!netcomsv!uu4news.netcom.com!netcomsv!uu3news.netcom.com!ix.netcom.com!netnews
From: [e-mail] (Randol D. Williams )
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Rules of ham DUMB.
Date: 12 Nov 1995 03:21:00 GMT
Organization: Netcom
Lines: 27
Message-ID: <483p6s$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]>
NNTP-Posting-Host: ix-mia3-19.ix.netcom.com
X-NETCOM-Date: Sat Nov 11  7:21:00 PM PST 1995
Xref: news.epix.net rec.radio.swap:50826 rec.radio.shortwave:65949 rec.radio.scanner:40610 rec.radio.amateur.space:5693 rec.radio.amateur.policy:31810 rec.radio.amateur.misc:94194 rec.radio.amateur.homebrew:11526 rec.radio.amateur.equipment:21350 rec.radio.amateur.digital.misc:12575 rec.radio.amateur.antenna:17057

In <4835cg$[e-mail]> Burt Fisher <[e-mail]> writes:

>
>Ham operator Jokes:
>
>1.  What is the thinnest book in the world?
>    What hams know about women.
>
>2.  How does a ham take a bubble bath?
>    He eats beans for dinner.
>
>3.  What's a ham's idea of foreplay?
>    A half hour of contesting.
>
>4.  How can you tell if a ham is sexually excited?
>    If he's still breathing.
>
>5.  How many hams does it take to change a roll of toilet paper?
>     We don't know...it has never happened.
>
>6.  What's a ham's idea of helping with the housework?
>     Lifting his leg so you can vacuum.
>
>7.  What does a ham consider a seven course meal?
>     A hot dog and a six pack of beer.

What kinda beer?  Can or bottle?


From Unknown Thu Nov 16 05:33:26 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!castle.nando.net!news
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: Rules of ham DUMB.
Date: 13 Nov 1995 02:19:37 GMT
Organization: News & Observer Public Access
Lines: 41
Message-ID: <4869vp$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <483p6s$[e-mail]>  <485olj$[e-mail]> <[e-mail]>
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[e-mail] wrote:
>
>In Article<485olj$[e-mail]>, <[e-mail]> write:
>> Path: castle.nando.net!news
>> From: Dave Hockaday <[e-mail]>
>> Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amate=
ur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
>> Subject: Re: Rules of ham DUMB.
>> Date: 12 Nov 1995 21:24:03 GMT
>> Organization: News & Observer Public Access
>> Lines: 12
>> Message-ID: <485olj$[e-mail]>
>> References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835cg$[e-mail]> <483p6s$[e-mail]>
>> NNTP-Posting-Host: grail512.nando.net
>> Mime-Version: 1.0
>> Content-Type: text/plain; charset=us-ascii
>> Content-Transfer-Encoding: 7bit
>> X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
>> To: [e-mail]
>> Xref: castle.nando.net rec.radio.swap:47712 rec.radio.shortwave:61743 rec.radio.scanner:27055 rec.radio.amateur.space:5081 rec.ra=
dio.amateur.policy:29534 rec.radio.amateur.misc:88528 rec.radio.amateur.homebrew:10278 rec.radio.amateur.equipment:18962 rec.radio.a=
mateur.digital.misc:10944 rec.radio
>amateur.antenna:15344
>>
>> >>7.  What does a ham consider a seven course meal?
>> >>     A hot dog and a six pack of beer.
>> >
>> >What kinda beer?  Can or bottle?
>>
>> That is a question that deserves some serious consideration. I thought it
>> sounded like the perfect meal (I would require 2 hotdogs, though). Throw
>> in some chips and you're living good :-)
>>
>> Dave WB4IUY
>>
>So Dave, What do you do on the weekends???
>Chris KC4YLE

Partake of perfect meals, for one :-)...
WB4IUY



From Unknown Thu Nov 16 05:33:28 1995
Path: news.epix.net!news.sprintlink.net!news.wwwi.com!nntpdist.primenet.com!ip16-084.phx.primenet.com!reptile
From: [e-mail] (Mike)
Newsgroups: rec.radio.amateur.antenna
Subject: scanner antenna
Date: Sat, 11 Nov 1995 17:56:15 MST
Organization: Primenet
Lines: 9
Message-ID: <[e-mail]>
NNTP-Posting-Host: ip16-084.phx.primenet.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #4]

A friend of mine put up a scanner antenna on the roof of his 5 story building.
I was 20 miles away on my mobile 2 meter ham radio talking simplex on low
power (5W) and the next time I talked to him he said he couldn't hear me, only
the other end of the conversation. I thought something may be wrong with the
setup, perhaps the antenna is low gain for that band.
        I know I was talking to someone else with an antenna 70 above the ground
(only about a 10 foot different) and was able to talk to him on low power for
about 30 miles or more.
        Does anyone have any ideas why I wasn't picked up on the scanner?


From Unknown Thu Nov 16 05:33:29 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.compuserve.com!newsmaster
From: "Franklin M. Hays  VE6INA" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Shunt-fed Towers
Date: 11 Nov 1995 21:55:05 GMT
Organization: CompuServe Incorporated
Lines: 10
Message-ID: <48363p$[e-mail]>
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To: All

Need all info I can get about shunt feeding towers.
My tower is 48 feet high with a Cushcraft tri-bander on top.
My understanding is that the 48' tower would have an electrical lenght
of about 95 feet?
The gama rod lenght would be abt. 35 feet?
I would appreciate all tips (help) I can get, either here or via my
e-mail address: [e-mail].

Tu es 73 de Frank VE6INA



From Unknown Thu Nov 16 05:33:29 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.compuserve.com!newsmaster
From: "Franklin M. Hays  VE6INA" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Shunt-fed Towers
Date: 11 Nov 1995 21:55:55 GMT
Organization: CompuServe Incorporated
Lines: 10
Message-ID: <48365b$[e-mail]>
NNTP-Posting-Host: ad57-150.compuserve.com
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X-Mailer: Mozilla 1.1N (Windows; I; 16bit)

Need all info I can get about shunt feeding towers.
My tower is 48 feet high with a Cushcraft tri-bander on top.
My understanding is that the 48' tower would have an electrical lenght
of about 95 feet?
The gama rod lenght would be abt. 35 feet?
I would appreciate all tips (help) I can get, either here or via my
e-mail address: [e-mail].

Tu es 73 de Frank VE6INA



From Unknown Thu Nov 16 05:33:30 1995
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!news.cc.nctu.edu.tw!serv.HiNet.net!news.uoregon.edu!chi-news.cic.net!news.compuserve.com!newsmaster
From: "Franklin M. Hays  VE6INA" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Shunt-Feed Tower
Date: 11 Nov 1995 23:31:18 GMT
Organization: CompuServe Incorporated
Lines: 11
Message-ID: <483bo6$[e-mail]>
NNTP-Posting-Host: ad15-024.compuserve.com
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Need all info I can get about shunt feeding towers (80 meters).
My tower is 48 feet tall with a Cushcraft triband on top.

My understanding is that the 48' tower would have an electrical lenght
 of abt. 95 feet.

I would appreciate all help I can get either here or to my e-mail address:
[e-mail].

Tu es 73 de Frank VE6INA



From Unknown Thu Nov 16 05:33:31 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!puzzle.palace.net!k2wk
From: [e-mail] (Walt Kornienko)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Shunt-Feed Tower
Date: 13 Nov 1995 08:04:17 GMT
Organization: Crystal Palace Networking
Lines: 18
Distribution: inet
Message-ID: <486u62$[e-mail]>
References: <483bo6$[e-mail]>
NNTP-Posting-Host: crystal.palace.net
X-Newsreader: TIN [version 1.2 PL2]

Franklin M. Hays  VE6INA ([e-mail]) wrote:
: Need all info I can get about shunt feeding towers (80 meters).
: My tower is 48 feet tall with a Cushcraft triband on top.

: My understanding is that the 48' tower would have an electrical lenght
:  of abt. 95 feet.

: I would appreciate all help I can get either here or to my e-mail address:
: [e-mail].

: Tu es 73 de Frank VE6INA

I'm in the same boat. But, the tower here is 90' of Rohn 55G
with a 205CA at 90' and a 40-2CD at 102'.  Any help as to
where and how to place the gamma shorting bar. Can this be
modelled using EZNEC?  Any and all info is greatly appreciated.
73 de Walt - K2WK @crystal.palace.net



From Unknown Thu Nov 16 05:33:32 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!mr.net!news.mr.net!dawn.mmm.com!news
From: [e-mail] (Gary Hosler)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Shunt-Feed Tower
Date: Mon, 13 Nov 1995 09:00:12 +0000
Organization: 3M - St. Paul, MN  55144-1000 US
Lines: 5
Message-ID: <[e-mail]>
References: <483bo6$[e-mail]> <486u62$[e-mail]>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 2.0b2 (Windows; I; 32bit)

I would suggest that you obtain a copy of the book "Low Band
DX'ing" by ON4UN.  John covers shunt feeding of towers,
matching networks, formulas to determine how much top loading
your antennas provide, and drop wire information.  Regarding
the use of antenna software, EZNEC is great for this task.


From Unknown Thu Nov 16 05:33:33 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!sparky!nlcnews.nlc.state.ne.us!usenet
From: [e-mail] (Gary McDuffie, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Somewhat high signal loss with glass mount normal?
Date: Sat, 11 Nov 1995 22:03:37 GMT
Organization: AG0N's Radio Ranch
Lines: 45
Message-ID: <4836gk$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: 198.206.239.248
X-Newsreader: Forte Agent .99b.112

On Sat, 11 Nov 1995 00:25:00 GMT, [e-mail] (William
Kucharski) wrote:

>Excuse my naivete if this is obvious...

>I've been running with a Larsen 2/70 NMO mag mount connected to my Yaesu 5100
>for a while now, but decided I wanted something more permanent.  I didn't want
>to cut a hole in my roof, so I went with a Larsen 2/70 glass mount.

>My question is whether a "large" signal loss is normal due to the inherent loss
>of capacitvely coupled antennas as compared to direct wire.

>What I see is, for example, a station that is full strength on the LCD signal
>strength bar meter on my 5100 when the mag mount is attached will read at a bit
>less than half scale when I'm connected to the glass mount.  I can get out and
>the repeaters can get in just fine, it just appears I'm losing what, according
>to the signal strength meter anyway, is a fair amount of signal.

>The obvious question is, is this is normal, or might I have a defective unit or
>damaged coax somewhere?

My son and I put a KG-144 on his car a few years ago.  We did extensive tests
in the driveway while we had the chance.  I live on "high" ground and have
access to repeaters almost 100 miles away.  In all cases, we could not tell
enough difference to measure.  We used a Larsen NMO mag mount in the center of
the roof and switched back and forth with the KG.

We have both since switched to dual band antennas (KG-2/70) but have done no
comparisons.  I have no idea how the dual bander compares under the same
circumstances.  I don't even have a uhf mobile at this point, but the 2m side
works very well.

Your loss from full scale to half scale seems to indicate a bigger problem
somewhere.  I would suspect the installation and begin deeper investigation.
Especially when you consider that the scale is more than likely very
logarithmic, you are seeing a very large drop in signal.  I'm assuming you
have moved around and aren't just sitting in a null.

For what its worth...
 _____                       _____ _____ ___ _____
|   __|___ ___ _ _    ___   |  _  |   __|   |   | |
|  |  | .'|  _| | |  |___|  |     |  |  | | | | | |
|_____|__,|_| |_  |         |__|__|_____|___|_|___|
              |___| [e-mail]



From Unknown Thu Nov 16 05:33:35 1995
Path: news.epix.net!news.sprintlink.net!news1.sunbelt.net!usenet
From: [e-mail] (Steve Breland)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap
Subject: re: spamming the net - was Re: The idiot ham trade.
Date: Mon, 13 Nov 1995 23:03:53 GMT
Organization: Richland Memorial Hospital
Lines: 14
Message-ID: <488fb2$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]>
NNTP-Posting-Host: seb.rmh.edu
X-Newsreader: Forte Agent .99a.107
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Burt Fisher <[e-mail]> wrote:

>I said: "I have a VIC 20 I want to trade for a IC-781" (how long do we
>have read thesre messages where some ham wants to trade his junk for
>something woth something).
>
Burt,
How's about trimming the non-radio groups from your posting
Newsgroups?
Thanks,

-Steve
email: [e-mail]



From Unknown Thu Nov 16 05:33:36 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Steel Pony )
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap
Subject: Still Need Sinadder info/manual
Date: 12 Nov 1995 22:48:11 GMT
Organization: Netcom
Lines: 10
Message-ID: <485tjb$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825d3$[e-mail]> <30a6439c.3935195@165.113.1.21>
NNTP-Posting-Host: ix-ont6-01.ix.netcom.com
X-NETCOM-Date: Sun Nov 12  2:48:11 PM PST 1995
Xref: news.epix.net rec.radio.amateur.antenna:17071 rec.radio.amateur.digital.misc:12589 rec.radio.amateur.equipment:21373 rec.radio.amateur.homebrew:11538 rec.radio.amateur.misc:94224 rec.radio.amateur.policy:31821 rec.radio.amateur.space:5709 rec.radio.cb:24399 rec.radio.noncomm:4964 rec.radio.scanner:40633 rec.radio.shortwave:65986 rec.radio.swap:50886

 Hi fellow hams:

 Still looking for info on Sinadder Model #S-101. Also willing to trade
 a goodie from the qrp junque box for good data. OR willing to pay cos-
 ts for repro's.


 Tnx,

 John, N5INZ


From Unknown Thu Nov 16 05:33:37 1995
Path: news.epix.net!news.sprintlink.net!news.texas.net!imci2!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: SWR meter
Date: 13 Nov 1995 13:44:13 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 20
Sender: [e-mail]
Message-ID: <4883lt$[e-mail]>
References: <47qoqa$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <47qoqa$[e-mail]>,
[e-mail] writes:

>I recently constructed a single element quad antenna for CB use.The array
>has a rated impedance of 120 ohms.I also built a matching transformer
from
>a six foot length of RG-59/u (rated at 70 ohms) coming from the "active"
>wire,into the coax back to the set.(RG-8/u rated at 51 ohms) This is
>supposed to impedance match the antenna to the set.Do I now need to
>modify my SWR meter to match this setup?It is my understanding that most
>currently available meters operate on 50 ohms.How would I make the
>changes,if necessary? The set has a bulit in SWR meter,and I added a
>meter which shows modulation,watts and SWR. THE two don't match in their
>readings. Any response will be appreciated.THANX!

If you have a good meter, you shoudn't have to change it. The line is 50
ohms and the meter is 50 ohms, that's all that matters. Probably the meter
is junque!

Tom


From Unknown Thu Nov 16 05:33:38 1995
Path: news.epix.net!news.sprintlink.net!matlock.mindspring.com!kr4tg.mindspring.com!kr4tg
From: [e-mail] (mike del pozzo)
Newsgroups: rec.radio.amateur.antenna
Subject: The 160 mtr. Lazy-H
Date: Wed, 15 Nov 1995 08:25:09 -0400
Organization: MindSpring Enterprises, Inc.
Lines: 15
Message-ID: <[e-mail]>
NNTP-Posting-Host: kr4tg.mindspring.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B]

hello folks , Whatdaya think?
 2 dipoles stacked, @ 50 ft spacing
 450 Ohm line between ea.
 450 Ohm lien feeding in center of both to Tunner
 this thing produces nice DX on 160/80/40 mtrs.
 160 : two Dipoles stacked brings the takeoff angle down
 80   : Agn very low takeoff & slight " clover " pattern
 40   : Agn very low takeoff & very distinctive " clover"
 20 - 6 : not very directional , but will work
 No need for switching or turning
 very high gain on 80 , and higher on 40
Gud Luck 73 de KR4TG, Mike
[e-mail]
Woodstock,GA



From Unknown Thu Nov 16 05:33:39 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: THE biggest THE ham THE problem.
Date: 11 Nov 1995 21:43:37 GMT
Lines: 25
Message-ID: <4835e9$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120>
NNTP-Posting-Host: 199.172.47.193
Mime-Version: 1.0
Content-Type: multipart/mixed;
        boundary="-------------------------------46492684123405"
X-Mailer: Mozilla 1.1N (Windows; I; 16bit)
Xref: news.epix.net rec.radio.swap:50794 rec.radio.shortwave:65921 rec.radio.scanner:40587 rec.radio.amateur.space:5686 rec.radio.amateur.policy:31796 rec.radio.amateur.misc:94175 rec.radio.amateur.homebrew:11519 rec.radio.amateur.equipment:21337 rec.radio.amateur.digital.misc:12566 rec.radio.amateur.antenna:17040

This is a multi-part message in MIME format.

---------------------------------46492684123405
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=us-ascii

From K1OIK:

---------------------------------46492684123405
Content-Transfer-Encoding: 7bit
Content-Type: text/plain

      Frequently I hear hams say, THE name HERE is______.
How often do you say when you meet someone (assuming your name
is Charlie), THE name HERE is Charlie? You never do that right? After
to do so is so impersonal and asinine that you would not want
to seem like a fool-then why do it on the air? Just because you
are a ham is no excuse not to be personal. Of course you could
really sound like THE jerk of the year by saying, THE first
personal here is Charlie (at least if you are not personal-you are
using the word-albeit it in an extremely impersonal way).
Also why say "here", is your name any different when you are "there?"

73 from we here (not there) at K1OIK where THE name are Burt.
---------------------------------46492684123405--


From Unknown Thu Nov 16 05:33:40 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!alterdial.uu.net!not-for-mail
From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: THE Burt
Date: 13 Nov 1995 01:47:11 GMT
Lines: 23
Message-ID: <48682v$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835e9$[e-mail]> <485uds$[e-mail]>
NNTP-Posting-Host: 199.172.47.193
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Windows; I; 16bit)
To: [e-mail]
Xref: news.epix.net rec.radio.swap:50900 rec.radio.shortwave:65999 rec.radio.scanner:40635 rec.radio.amateur.space:5712 rec.radio.amateur.policy:31829 rec.radio.amateur.misc:94236 rec.radio.amateur.homebrew:11540 rec.radio.amateur.equipment:21376 rec.radio.amateur.digital.misc:12592 rec.radio.amateur.antenna:17072


[e-mail] (Tim Hynde ka8ddz/qrp Rochester, MI ) wrote:

>Did it ever occour to you that meeting someone in person is differnt
>than meeting them on the air? In my 15 brief years as a ham and SWL I
>have never heard a conversation, amateur or commercial that resembled
>one I would have with someone face to face.

>Tim Hynde ka8ddz

You mean in person you are supposed to sound like a person but on
the air sounding like an ass is OK? All my conversations are spoken
as much as they would be in person as possible.

#================#=====================================================#
|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
|    K1OIK       |  The less you say, the more people will remember    |
#================#=====================================================#
| [e-mail]                                [e-mail] |
#======================================================================#




From Unknown Thu Nov 16 05:33:42 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Donald R. Sanchez )
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: THE Burt
Date: 13 Nov 1995 03:40:19 GMT
Organization: Netcom
Lines: 36
Message-ID: <486en3$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835e9$[e-mail]> <485uds$[e-mail]> <48682v$[e-mail]>
NNTP-Posting-Host: ix-slc3-23.ix.netcom.com
X-NETCOM-Date: Sun Nov 12  7:40:19 PM PST 1995
Xref: news.epix.net rec.radio.swap:50921 rec.radio.shortwave:66007 rec.radio.scanner:40648 rec.radio.amateur.space:5722 rec.radio.amateur.policy:31838 rec.radio.amateur.misc:94256 rec.radio.amateur.homebrew:11545 rec.radio.amateur.equipment:21385 rec.radio.amateur.digital.misc:12601 rec.radio.amateur.antenna:17082

In <48682v$[e-mail]> Burt Fisher <[e-mail]> writes:

>
>
>[e-mail] (Tim Hynde ka8ddz/qrp Rochester, MI ) wrote:
>
>>Did it ever occour to you that meeting someone in person is differnt
>>than meeting them on the air? In my 15 brief years as a ham and SWL I
>>have never heard a conversation, amateur or commercial that resembled
>>one I would have with someone face to face.
>
>>Tim Hynde ka8ddz
>
>You mean in person you are supposed to sound like a person but on
>the air sounding like an ass is OK? All my conversations are spoken
>as much as they would be in person as possible.
>
>#================#====================================================
#
>|  Burt Fisher   |  Teacher of video, broadcasting and electronics
|
>| Amateur call   |         South Dennis, Ma. (Cape Cod)
|
>|    K1OIK       |  The less you say, the more people will remember
|
>#================#====================================================
#
>| [e-mail]                                [e-mail]
|
>#=====================================================================
#
>
>

on the air he tries to come through as much of a person as possible,
but on the internet he comes through as quite the ASS!


From Unknown Thu Nov 16 05:33:43 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!ix-nhv-ct1-26
From: [e-mail] (Ronald C. Barnes)
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: THE Burt
Date: Mon, 13 Nov 95 15:55:59 GMT
Organization: Netcom
Lines: 29
Message-ID: <487put$[e-mail]>
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835e9$[e-mail]> <485uds$[e-mail]> <48682v$[e-mail]> <486en3$[e-mail]>
NNTP-Posting-Host: ix-nhv-ct1-26.ix.netcom.com
X-NETCOM-Date: Mon Nov 13  7:58:21 AM PST 1995
X-Newsreader: News Xpress Version 1.0 Beta #4
Xref: news.epix.net rec.radio.swap:50939 rec.radio.shortwave:66034 rec.radio.scanner:40671 rec.radio.amateur.space:5731 rec.radio.amateur.policy:31841 rec.radio.amateur.misc:94271 rec.radio.amateur.homebrew:11551 rec.radio.amateur.equipment:21395 rec.radio.amateur.digital.misc:12607 rec.radio.amateur.antenna:17090

In article <486en3$[e-mail]>,
   [e-mail] (Donald R. Sanchez ) wrote:

_____ LOTS OF STUFF NUKED _____

>
>on the air he tries to come through as much of a person as possible,
>but on the internet he comes through as quite the ASS!


Here's an original idea here....


                        IGNORE THE ASS...  KILL FILES ARE OUR FRIENDS

I added Burt to my killfile, and WHOA..  the number of messages my newsreader
thinks it has is about half what it was.

Now... if there is only a way of filtering out responses.


--
****************************************************************
The opinions contained herein are mine and mine alone, so there!
For only I am capable of spewing forth such absurdities and my
boss / internet provider / own mother will laugh heartily at any
attempt to bring them into this and disavow any knowlege of me.
Then we'll have a beer and have a good laugh at your expense.
****************************************************************


From Unknown Thu Nov 16 05:33:44 1995
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!eskimo!news
From: STOP @CROSS-POSTING.COM
Subject: Re: THE Burt
X-Nntp-Posting-Host: tia1.eskimo.com
Message-ID: <[e-mail]>
Followup-To: [e-mail]
Keywords: cross-posting
Sender: [e-mail] (News User Id)
Reply-To: [e-mail]
Organization: NoMoreCross-posting Inc.
X-Newsreader: Forte Agent .99.82
References: <NEWTNews.816104817.1257.amsoft@486dx4_120> <4835e9$[e-mail]> <485uds$[e-mail]> <48682v$[e-mail]>
Date: Mon, 13 Nov 1995 16:05:22 GMT
Lines: 46
Xref: news.epix.net rec.radio.swap:50958 rec.radio.shortwave:66050 rec.radio.scanner:40680 rec.radio.amateur.space:5739 rec.radio.amateur.policy:31848 rec.radio.amateur.misc:94282 rec.radio.amateur.homebrew:11561 rec.radio.amateur.equipment:21410 rec.radio.amateur.digital.misc:12614 rec.radio.amateur.antenna:17102

Burt Fisher <[e-mail]> wrote:


>[e-mail] (Tim Hynde ka8ddz/qrp Rochester, MI ) wrote:

>>Did it ever occour to you that meeting someone in person is differnt
>>than meeting them on the air? In my 15 brief years as a ham and SWL I
>>have never heard a conversation, amateur or commercial that resembled
>>one I would have with someone face to face.

>>Tim Hynde ka8ddz

>You mean in person you are supposed to sound like a person but on
>the air sounding like an ass is OK? All my conversations are spoken
>as much as they would be in person as possible.

>#================#=====================================================#
>|  Burt Fisher   |  Teacher of video, broadcasting and electronics     |
>| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
>|    K1OIK       |  The less you say, the more people will remember    |
>#================#=====================================================#
>| [e-mail]                                [e-mail] |
>#======================================================================#

                      COME ON BURT !!!!!!!!!!!!!

>rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur..space,
>rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,
>rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna

  BURT,
 Annoying, slandering, mean-spirited are all easy attributes
and you excel in every field. You occasionally kinda sorta
show some intelligence. Why don't you quit taking the LAZY
route of cross-posting, and instead narrow it to the respective
group.
 If seeing the responses generated by your remarks fascinates
you, I'm sure somewhere in the halls of M.U. is a psychology
professor that may be able to help you.
 Of course, practicing what you preach would be nice too !!!

>|  Burt Fisher   |  The less you say, the more people will remember |

regards,
founding member of the Stamp Out Cross-Posters Society   SOCS



From Unknown Thu Nov 16 05:33:46 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (InterSource )
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Date: 12 Nov 1995 20:41:17 GMT
Organization: Netcom
Lines: 46
Message-ID: <485m5d$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]>
NNTP-Posting-Host: ix-lv6-01.ix.netcom.com
X-NETCOM-Date: Sun Nov 12 12:41:17 PM PST 1995
Xref: news.epix.net rec.puzzles:52044 rec.puzzles.crosswords:4592 rec.pyrotechnics:37623 rec.radio.amateur.antenna:17070 rec.radio.amateur.digital.misc:12588 rec.radio.amateur.equipment:21370 rec.radio.amateur.homebrew:11537 rec.radio.amateur.misc:94221 rec.radio.amateur.policy:31820 rec.radio.amateur.space:5707 rec.radio.cb:24398 rec.radio.noncomm:4963 rec.radio.scanner:40631 rec.radio.shortwave:65983 rec.radio.swap:50879 rec.roller-coaster:23176 rec.running:45204 rec.scouting:37605 rec.scuba:80205 rec.skiing.alpine:32815

In <4825eh$[e-mail]> Burt Fisher <[e-mail]> writes:

>
>I said: "I have a VIC 20 I want to trade for a IC-781" (how long do we
>have read thesre messages where some ham wants to trade his junk for
>something woth something).
>
>
>From: KH2KQ@KA6EYH.#NOCAL.CA.USA.NOAM
>To  : [e-mail]


Burt there is a Salvation Army Thrift Store in Thornton Colorado (on
Washington Blvd.) that as of last week, had a box with 4 Vic 20's for
sale for $10 --- is that a hint ???? --- surely you were not serious
about that type of trade or was it a typo.>

>Hello Burt,
>
>You actually got one of those VIC-20's you wanna trade?
>
>I do not have a Icom 781, but I does have a Kenwood 950SDX - howsa
bout dat?
>
>Only problem is dat it am attached under the counter of a 36 foot
>motorhome. So if youse trade for da 950 youse gotta take the motorhome
>too. Its got a generator and only 123 actual miles. But the problem
der
>is dat it am havin a dead battery and it can't start and it is in the
>driveway of my vacation home at the beach in Malibu - so youse also
>gotta take the house in Malibu if youse want the 950SDX.
>
>Howsomever, there is a beach bunny and her girlfriend that said they
>would just die if I sold the Malibu house on the beach, so they come
>with the house and the motorhome and the radio.
>
>If dat am OK, then weese got a deal!
>
>Oh yeah, does the VIC-20 got a DC power supply with it?
>
>By the by, if you hear of anyone who has a Kenwood TS-50 attached to a
>Mercedes 450SLC - I would like to trade a Radio Shack 202 for
it!!!!!!!
>
>73 de Chuck



From Unknown Thu Nov 16 05:33:47 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!globe.indirect.com!grizzarv
From: [e-mail] (Robert V. Grizzard)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Followup-To: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Date: 12 Nov 1995 21:49:34 GMT
Organization: Internet Direct, Inc.
Lines: 9
Message-ID: <485q5e$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <485m5d$[e-mail]>
NNTP-Posting-Host: bud.indirect.com
X-Newsreader: TIN [version 1.2 PL2]
Xref: news.epix.net rec.puzzles:52049 rec.puzzles.crosswords:4594 rec.pyrotechnics:37629 rec.radio.amateur.antenna:17074 rec.radio.amateur.digital.misc:12595 rec.radio.amateur.equipment:21378 rec.radio.amateur.homebrew:11542 rec.radio.amateur.misc:94247 rec.radio.amateur.policy:31834 rec.radio.amateur.space:5715 rec.radio.cb:24402 rec.radio.noncomm:4965 rec.radio.scanner:40638 rec.radio.shortwave:66004 rec.radio.swap:50912 rec.roller-coaster:23179 rec.running:45220 rec.scouting:37611 rec.scuba:80218 rec.skiing.alpine:32831

InterSource ([e-mail]) wrote:
: In <4825eh$[e-mail]> Burt Fisher <[e-mail]> writes:
: >From: KH2KQ@KA6EYH.#NOCAL.CA.USA.NOAM
: >To  : [e-mail]
[chomp]

Folks, can we trim those followup-to lines?  This has nothing to do with
pyrotechnics or rocketry.  Or puzzles.  Or skiing.  Or - but you *do*
have the idea, right?


From Unknown Thu Nov 16 05:33:48 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!fangz.com!whirlwind
From: [e-mail] ()
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Followup-To: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Date: 13 Nov 1995 17:23:23 GMT
Organization: The DataXchange Network, Inc
Lines: 11
Message-ID: <487uub$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <485m5d$[e-mail]>
NNTP-Posting-Host: fangz.com
X-Newsreader: TIN [version 1.2 PL2]
Xref: news.epix.net rec.puzzles:52066 rec.puzzles.crosswords:4601 rec.pyrotechnics:37651 rec.radio.amateur.antenna:17093 rec.radio.amateur.digital.misc:12610 rec.radio.amateur.equipment:21397 rec.radio.amateur.homebrew:11553 rec.radio.amateur.misc:94274 rec.radio.amateur.policy:31843 rec.radio.amateur.space:5734 rec.radio.cb:24429 rec.radio.noncomm:4968 rec.radio.scanner:40673 rec.radio.shortwave:66039 rec.radio.swap:50946 rec.running:45249 rec.scouting:37628 rec.scuba:80256 rec.skiing.alpine:32872

Speaking of idiots, this wound up in a very inappropritate newsgroup. I've
taken the liberty of leaving that newsgroup out of further discussion.

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Barry K. Swank, Jr.                                          Rochester, NY
[e-mail]

Sig under construction!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



From Unknown Thu Nov 16 05:33:50 1995
Path: news.epix.net!news.sprintlink.net!i-2000.com!usenet
From: [e-mail] (Doug Randall)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Date: Mon, 13 Nov 1995 22:08:45 GMT
Organization: I-2000 Inc. - Internet Services
Lines: 23
Message-ID: <488ff6$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]>
NNTP-Posting-Host: dougrand.dh.i-2000.com
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.puzzles:52072 rec.puzzles.crosswords:4603 rec.pyrotechnics:37654 rec.radio.amateur.antenna:17096 rec.radio.amateur.digital.misc:12613 rec.radio.amateur.equipment:21406 rec.radio.amateur.homebrew:11557 rec.radio.amateur.misc:94279 rec.radio.amateur.policy:31845 rec.radio.amateur.space:5737 rec.radio.cb:24433 rec.radio.noncomm:4971 rec.radio.scanner:40679 rec.radio.shortwave:66045 rec.radio.swap:50955 rec.roller-coaster:23191 rec.running:45259 rec.scouting:37635 rec.scuba:80267 rec.skiing.alpine:32879

Burt Fisher <[e-mail]> wrote:

>I said: "I have a VIC 20 I want to trade for a IC-781" (how long do we


>Howsomever, there is a beach bunny and her girlfriend that said they
>would just die if I sold the Malibu house on the beach, so they come
>with the house and the motorhome and the radio.

>By the by, if you hear of anyone who has a Kenwood TS-50 attached to a
>Mercedes 450SLC - I would like to trade a Radio Shack 202 for it!!!!!!!
>
>73 de Chuck
Hello Chuck,

I gotta Mercedes 350SL and it comes with a Alinco DR600.  Been
thinking that I might want to trade for those two beach bunnies if you
don't want them any more...

73's Doug

KN2Y



From Unknown Thu Nov 16 05:33:51 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!mr.net!news.mr.net!mixer.visi.com!usenet
From: [e-mail] ([e-mail])
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap
Subject: Re: The idiot ham trade.
Date: Mon, 13 Nov 1995 20:42:37 GMT
Organization: Vector Internet Services
Lines: 12
Message-ID: <488apa$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <485m5d$[e-mail]> <487uub$[e-mail]>
NNTP-Posting-Host: stevesam.visi.com
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.radio.amateur.antenna:17103 rec.radio.amateur.digital.misc:12615 rec.radio.amateur.equipment:21411 rec.radio.amateur.homebrew:11562 rec.radio.amateur.misc:94284 rec.radio.amateur.policy:31849 rec.radio.amateur.space:5740 rec.radio.cb:24434 rec.radio.noncomm:4972 rec.radio.scanner:40681 rec.radio.shortwave:66052 rec.radio.swap:50959

[e-mail] () wrote:

>Speaking of idiots, this wound up in a very inappropritate newsgroup. I've
>taken the liberty of leaving that newsgroup out of further discussion.

<sig cut>
<inappropriate groups cut>

Why not use your judgement and remove ALL inappropriate groups like I
did?
Me



From Unknown Thu Nov 16 05:33:51 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!mr.net!news.mr.net!mixer.visi.com!usenet
From: [e-mail] ([e-mail])
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap
Subject: Re: The idiot ham trade.
Date: Tue, 14 Nov 1995 17:22:05 GMT
Organization: Vector Internet Services
Lines: 11
Message-ID: <48ajd5$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <488ff6$[e-mail]> <[e-mail]>
NNTP-Posting-Host: stevesam.visi.com
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.radio.amateur.antenna:17113 rec.radio.amateur.digital.misc:12625 rec.radio.amateur.equipment:21423 rec.radio.amateur.homebrew:11569 rec.radio.amateur.misc:94303 rec.radio.amateur.policy:31855 rec.radio.amateur.space:5745 rec.radio.cb:24439 rec.radio.noncomm:4977 rec.radio.scanner:40696 rec.radio.shortwave:66065 rec.radio.swap:50970

[e-mail] (CrazyOne - Greg Pacek) wrote:

>In article <488ff6$[e-mail]>, [e-mail] (Doug Randall) wrote:

<snip>
<inappropriate groups cut>

PLEASE check your subject lines people!
REC.PYROTECHNICS DOESN'T CARE!
Me



From Unknown Thu Nov 16 05:33:53 1995
Path: news.epix.net!news.sprintlink.net!gatech2!usenet.eel.ufl.edu!freenet3.freenet.ufl.edu!afn17891
From: "Thomas W. Castle" <[e-mail]>
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.rad
Subject: Re: The test.
Date: Sun, 12 Nov 1995 23:44:05 -0500
Lines: 17
Message-ID: <[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <[e-mail]> <482526$[e-mail]>
NNTP-Posting-Host: freenet3.afn.org
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <482526$[e-mail]>
Xref: news.epix.net rec.puzzles:52054 rec.puzzles.crosswords:4596 rec.pyrotechnics:37635 rec.radio.amateur.antenna:17084 rec.radio.amateur.digital.misc:12602 rec.radio.amateur.equipment:21387 rec.radio.amateur.homebrew:11547 rec.radio.amateur.misc:94262 rec.radio.amateur.policy:31839 rec.radio.amateur.space:5726

Gee Burp... I see your going to be a pain in the ass in several
news groups.... I don't know  <or care> if your problem is caused
RF, Magnetic fields or your just a plain foamer & drooler...

Why don't you try some of the other news groups for some help?
//www/ Dr. Kavor.@ death.com, Birth contol retro-active, or one
of the www// sites for "Do it yourself Frontal lobotomy, Electro-
shock therapy or just wait for your new Lithuim tablets to
come in....

If your that bored with life an have nothing better to do than
complain; maybe we can get you on the "Uni-B" X-mas mailing list...

Don't go away mad just go away....

KD4QHH a.k.a. Tom



From Unknown Thu Nov 16 05:33:54 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!torn!nott!bcarh189.bnr.ca!nrtphba6.bnr.ca!dstone
From: [e-mail] (Danny Stone NT)
Newsgroups: rec.radio.amateur.antenna
Subject: Tuner Recommendation
Date: 15 Nov 1995 17:26:58 GMT
Organization: Bell Northern Research
Lines: 29
Message-ID: <48d7t2$[e-mail]>
NNTP-Posting-Host: nrtps13a.bnr.ca
X-Newsreader: TIN [version 1.2 PL2]

Hiya!

I'm planning to put up a simple multiband wire antenna,
'thinking about approx. 250 feet center fed with 450 Ohm
line.

I plan to use this for 160 - 10 meters (Incl WARC).

Does anyone have any recommendations for a good
commercially available antenna tuner that would
work with this configuration?

Tnx,
d.

--

******************************************************
*                                                    *
*  [e-mail]          Research Triangle Park, NC *
*  WB4ETY                                            *
*                                                    *
*  Danny "Miscreant" Stone:                          *
*     A Professional Grouch AND                      *
*     Misanthrope in Training...                     *
*                                                    *
*  "Don't Blame Me, Blame the Testosterone!"         *
*                                                    *
******************************************************


From Unknown Thu Nov 16 05:33:55 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!btnet!demon!pinetree
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Tuner Recommendation
Date: Wed, 15 Nov 95 17:01:53 GMT
Lines: 25
Message-ID: <[e-mail]>
References: <48d7t2$[e-mail]>
NNTP-Posting-Host: pinetree.microserve.com
X-NNTP-Posting-Host: pinetree.microserve.com
X-Newsreader: News Xpress Version 1.0 Beta #4

   [e-mail] (Danny Stone NT) wrote:

>I'm planning to put up a simple multiband wire antenna,
>'thinking about approx. 250 feet center fed with 450 Ohm
>line.
>
>I plan to use this for 160 - 10 meters (Incl WARC).
>
>Does anyone have any recommendations for a good
>commercially available antenna tuner that would
>work with this configuration?

There are no commercial tuners on the Amateur market for this purpose.
All of the presently available tuners use baluns to provide balanced
output.  Baluns cannot be used to feed the excessively high impedances
that will result on some bands from the combination you described.

For optimum system performance, you will need to build a balanced,
link-coupled tuner.  An alternative might be to look for a used
Johnson Match Box, although these won't tune 160M or 30M.

73,

Jack  WB3U


From Unknown Thu Nov 16 05:33:56 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!eskimo!localhost
From: [e-mail] (Bill Turner)
Subject: Re: UHF connector losses
X-Nntp-Posting-Host: tia1.eskimo.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News User Id)
Organization: Eskimo North (206) For-Ever
X-Newsreader: News Xpress Version 1.0 Beta #4
References: <[e-mail]>
Date: Sun, 12 Nov 1995 02:30:42 GMT
Lines: 25

In article <[e-mail]>,
   [e-mail] (Jari Jokiniemi) wrote:
>
>I have to make a choise between buying some very high quality coaxial
>cable between a relay box and a HF antenna, which will require
>additional connectors, and using common RG-213 cable, which I can
>manage with the common UHF connectors at both ends without any
>additional N to UHF connectors. In order to make this choise I
>would like to know how much loss does an UHF connector cause at 28
>MHz. Anyone knows?
>
---------------------------------------------------------------------
My answer is not very scientific, but highly practical:  I just fired up my
rig and did a 30 second CQ on 10 meter RTTY at 1500 watts output.  I have five
UHF connectors in the shack (output from amplifier, input to low pass filter,
output from low pass filter, input to antenna switch, output from antenna
switch), and they all felt faintly warm -- perhaps about one watt dissipation
in each one.  At the 1500 watt level, one watt is about .003 dB if my math is
correct.  In other words, go ahead and use 'em.

And of course, nobody answered.


73, Bill W7LZP
[e-mail]


From Unknown Thu Nov 16 05:33:57 1995
Path: news.epix.net!news.sprintlink.net!in2.uu.net!van-bc!fonorola!news.magi.com!magi03p32
From: [e-mail] (Jeff Brunet)
Newsgroups: rec.radio.amateur.antenna
Subject: Vertical antenna
Date: 13 Nov 1995 04:08:45 GMT
Organization: Magi Data Consulting
Lines: 4
Message-ID: <486gcd$[e-mail]>
NNTP-Posting-Host: magi03p32.magi.com
To: all
X-Newsreader: News Xpress Version 1.0 Beta #3

Hi, I am in need of a good vertical antenna. Will do a lot of dx'ing. Need
your suggestion and your opinion.
                        Any help will be grately appreciated.
                          Thanks, [e-mail]


From Unknown Thu Nov 16 05:33:58 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!cs.utexas.edu!news.eas.asu.edu!news.asu.edu!aztec.asu.edu!ajsklar
From: [e-mail] (ALLEN SKLAR)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Vertical antenna
Date: 13 Nov 1995 07:28:01 GMT
Organization: Arizona State University
Lines: 15
Message-ID: <486s21$[e-mail]>
NNTP-Posting-Host: aztec.asu.edu


Hi Jeff,
  I would like to help you, but you need to narrow down
what your looking for....daytime dx (20-15-10 meters)
nitetime dx (80-40 meters) how tall do you want to go???
Do you want phased vert. (4 tower)????
Two good places to start looking are The ARRL ANTENNA BOOK
this is VERY GOOD for all kinds of antenna info.
Anouthe very good book is VERTICAL ANTENNAS by
Paul Lee UN
Paul Lee USN Ret. He died a few years ago, but the book
can still be found at any store that has Ham Radio Books.
The CQ book store show it for $9.95, Good Luck and enjoy.
de AA7BJ Allen...
--


From Unknown Thu Nov 16 05:33:58 1995
Path: news.epix.net!news.sprintlink.net!in2.uu.net!newsxfer.itd.umich.edu!chi-news.cic.net!news.wctc.net!spcuna!citicorp.com!jackers-pc
From: [e-mail] (John Ackers)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: WANTED: Antenna Software
Date: 13 Nov 1995 15:27:10 GMT
Organization: Citicorp - CGIN
Lines: 7
Message-ID: <487o4e$[e-mail]>
References: <481ab6$[e-mail]>
NNTP-Posting-Host: jackers-pc.cdr.gb.citicorp.com
X-Newsreader: News Xpress Version 1.0 Beta #3

In article <481ab6$[e-mail]>,
   [e-mail] (Dedelvis04) wrote:
>Please tell me where I can get antenna software !!

So do, I especially for 11 meter beams and phased verticals.

John


From Unknown Thu Nov 16 05:33:59 1995
Path: news.epix.net!news.sprintlink.net!news.inc.net!news.sol.net!spool.mu.edu!uwm.edu!chi-news.cic.net!news.compuserve.com!news.production.compuserve.com!news
From: Roger A. Cox <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: WANTED: Antenna Software
Date: 13 Nov 1995 18:29:36 GMT
Organization: Telex Communications, Inc.
Lines: 3
Message-ID: <4882qg$frk$[e-mail]>
References: <481ab6$[e-mail]>

NEC (Numerical Electromagnetics Code) ver.2 and Mininec 3 are
available at ftp.netcom.com/pub/ra/rander/NEC as well as a few
other places.


From Unknown Thu Nov 16 05:34:00 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (Dedelvis04)
Newsgroups: rec.radio.amateur.antenna
Subject: WANTED: The Elmer files for antennas
Date: 12 Nov 1995 03:18:13 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 2
Sender: [e-mail]
Message-ID: <484ak5$[e-mail]>
Reply-To: [e-mail] (Dedelvis04)
NNTP-Posting-Host: newsbf02.mail.aol.com

I keep seeing poiinters for these elmer files at cs.buffalo.edu but I
cannot find the antenna files anywhere. Please help.


From Unknown Thu Nov 16 05:34:01 1995
Path: news.epix.net!news.sprintlink.net!matlock.mindspring.com!kr4tg.mindspring.com!kr4tg
From: [e-mail] (mike del pozzo)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: WANTED: The Elmer files for antennas
Date: Wed, 15 Nov 1995 08:14:38 -0400
Organization: MindSpring Enterprises, Inc.
Lines: 18
Message-ID: <[e-mail]>
References: <484ak5$[e-mail]>
NNTP-Posting-Host: kr4tg.mindspring.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B]

In article <484ak5$[e-mail]> [e-mail] (Dedelvis04) writes:
>From: [e-mail] (Dedelvis04)
>Subject: WANTED: The Elmer files for antennas
>Date: 12 Nov 1995 03:18:13 -0500

>I keep seeing poiinters for these elmer files at cs.buffalo.edu but I
>cannot find the antenna files anywhere. Please help.
Hello wabbit - I'm hunting Elmers
If you read this newsgroup often - you might be amazed at all you could
learn... If you want to read about specific antennas Try :
                                1. ARRL antenna Book
                                2. Low band DX'ing (ON4UN )
                                3. Practical Antenna Handbook ( Carr)
                                4. All About ** Antennas (books by Orr & Cowan)
                                5. QRZ online for ant. software (shareware)
                                6. Ur buddy next door w/lots of QSL cards
but don't take suggestions to LAW experiment on ur own - this is how we get
things to talk about......... Gud Luck de KR4TG,Mike


From Unknown Thu Nov 16 05:34:02 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail]
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: What some think about sexy hams
Date: Mon, 13 Nov 1995 11:53:57 GMT
Organization: Netcom
Lines: 10
Message-ID: <487bgm$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]>
NNTP-Posting-Host: ix-hou6-01.ix.netcom.com
X-NETCOM-Date: Mon Nov 13  3:51:50 AM PST 1995
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.puzzles:52058 rec.puzzles.crosswords:4599 rec.pyrotechnics:37641 rec.radio.amateur.antenna:17085 rec.radio.amateur.digital.misc:12603 rec.radio.amateur.equipment:21390 rec.radio.amateur.homebrew:11550 rec.radio.amateur.misc:94266 rec.radio.amateur.policy:31840 rec.radio.amateur.space:5729 rec.radio.cb:24426 rec.radio.noncomm:4966 rec.radio.scanner:40665 rec.radio.shortwave:66026 rec.radio.swap:50933 rec.roller-coaster:23187 rec.running:45235 rec.scouting:37621 rec.scuba:80235 rec.skiing.alpine:32860

Burt Fisher <[e-mail]> wrote:

(snip)

What the hell does this have to do with rollercoasters?

Please remove rec.roller-coaster from this thread.





From Unknown Thu Nov 16 05:34:04 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!tank.news.pipex.net!pipex!demon!intlog.demon.co.uk
From: [e-mail] (Sparrow)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: What some think about sexy hams
Date: Mon, 13 Nov 1995 17:14:54 GMT
Lines: 17
Message-ID: <[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]>
NNTP-Posting-Host: intlog.demon.co.uk
X-NNTP-Posting-Host: intlog.demon.co.uk
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.puzzles:52063 rec.puzzles.crosswords:4600 rec.pyrotechnics:37650 rec.radio.amateur.antenna:17092 rec.radio.amateur.digital.misc:12608 rec.radio.amateur.equipment:21396 rec.radio.amateur.homebrew:11552 rec.radio.amateur.misc:94273 rec.radio.amateur.policy:31842 rec.radio.amateur.space:5733 rec.radio.cb:24428 rec.radio.noncomm:4967 rec.radio.scanner:40672 rec.radio.shortwave:66037 rec.radio.swap:50942 rec.roller-coaster:23189 rec.running:45248 rec.scouting:37627 rec.scuba:80254 rec.skiing.alpine:32871

[e-mail] (Jim Clarke) wrote:


>Oh, I see, the self-righteous calling the self-righteous self-righteous.

>I've only been an amateur radio operator for 18 years and I would have to
<>SNIP><
>Don't let the bad apples spoil the excitement that can be found in amateur
>radio, there is something there for everyone (wives/girlfriends too).

Rec.puzzles.crosswords DOES NOT CARE. Please return to a ham radio newsgroup,
or even better go back to your bloody radio and talk to people who do.

Bloody but unbowed=
==============Spug (Sparrow) London.==========================



From Unknown Thu Nov 16 05:34:05 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!bloom-beacon.mit.edu!newsxfer.itd.umich.edu!tank.news.pipex.net!pipex!newsfeed.internetmci.com!mr.net!news.mr.net!mixer.visi.com!usenet
From: [e-mail] ([e-mail])
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap
Subject: Re: What some think about sexy hams
Date: Mon, 13 Nov 1995 20:41:12 GMT
Organization: Vector Internet Services
Lines: 18
Message-ID: <488amm$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <[e-mail]>
NNTP-Posting-Host: stevesam.visi.com
X-Newsreader: Forte Free Agent 1.0.82
Xref: news.epix.net rec.radio.amateur.antenna:17095 rec.radio.amateur.digital.misc:12612 rec.radio.amateur.equipment:21405 rec.radio.amateur.homebrew:11556 rec.radio.amateur.misc:94278 rec.radio.amateur.policy:31844 rec.radio.amateur.space:5736 rec.radio.cb:24432 rec.radio.noncomm:4970 rec.radio.scanner:40678 rec.radio.shortwave:66044 rec.radio.swap:50954

[e-mail] (Sparrow) wrote:

>[e-mail] (Jim Clarke) wrote:

<snip>
>Rec.puzzles.crosswords DOES NOT CARE. Please return to a ham radio newsgroup,
>or even better go back to your bloody radio and talk to people who do.
>
>Bloody but unbowed=
>==============Spug (Sparrow) London.==========================

<inappropriate groups cut>

PLEASE PLEASE PLEASE stop this thread.
Re-issue it with a new groups line.
rec.pyrotechnics doesn't care either.
Me



From Unknown Thu Nov 16 05:34:07 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!info.ucla.edu!library.ucla.edu!agate!remarque.berkeley.edu!asya
From: [e-mail] (Asya)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space
Subject: Re: What some think about sexy hams
Followup-To: rec.radio.amateur.misc
Date: 14 Nov 1995 17:25:12 GMT
Organization: TGV Inc., Santa Cruz, CA
Lines: 15
Message-ID: <48ajdo$[e-mail]>
References: <[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]>
NNTP-Posting-Host: remarque.berkeley.edu
Xref: news.epix.net rec.radio.amateur.antenna:17118 rec.radio.amateur.digital.misc:12629 rec.radio.amateur.equipment:21429 rec.radio.amateur.homebrew:11577 rec.radio.amateur.misc:94313 rec.radio.amateur.policy:31857 rec.radio.amateur.space:5746

In article <487hjv$[e-mail]>, Jim Clarke <[e-mail]> wrote:
>Don't let the bad apples spoil the excitement that can be found in amateur
>radio, there is something there for everyone (wives/girlfriends too).

I've been told that watching paint dry is really exciting.  I
tried it and I just couldn't see it!

Maybe you can spell out what excitement can be found in amateur radio,
especially that "(wives/girlfriends too)" part.

[newsgroup line trimmed. followups set to the group I think is appropriate]
--
                        __o
Asya Kamsky             \<_       Ride.  Eat.  Sleep.    California AIDS Ride 3
Santa Cruz, CA       ( )/( )        Ride.  Eat.  Sleep.  2000/545/7 Jun 2-9 '96


From Unknown Thu Nov 16 05:34:08 1995
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From: Burt Fisher <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.
Subject: Re: What some think about sexy hams
Date: 15 Nov 1995 01:06:29 GMT
Lines: 36
Message-ID: <48beel$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <488jl6$[e-mail]> <489chl$[e-mail]>
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>>>who does this Burt think he is? A am a ham, have been since I was ten.
>>>And thats before I had my first bra! And before I got my first modeling
>>>job. Even before I had my first sex (with a ham btw). Grow up you creep!

What a doll you must be. Having sex with an old fat white ham.
Is your last name Barker? Certainly not Fox?



>>>My boyfriend is NOT a ham, and even if he was, I would find him just as
>>>attractive! Hey, Idea, how many "hams" have posed for playboy? Hummm,
>>>maybe I'll be the first! Anyone know?
>>>face it burt fisher, you hate women, you hate men, you hate yourself!

I am not into dogs or pigs.


>>>Ciar
>>>>xxxxxx <-callsign removed because this burt guy might bother me, and his
>>>antenna probly isn't big enough for my tower's anyway!

Come look at my erection (tower of course).


>
>>#================#=====================================================#
>>|  Burt Fisher   |  Teacher of abuse, badmouthing and divorce          |
>>| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
>>|    K1OInK       |  The more you say, the less people will forget      |
>>#================#=====================================================#
>>| [e-mail]                                [e-mail]  |
>>#======================================================================#





From Unknown Thu Nov 16 05:34:09 1995
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.
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From: [e-mail] (David Feldman)
Subject: Re: What some think about sexy hams
Message-ID: <[e-mail]>
Followup-To: rec.radio.amateur.misc
Organization: Organization? Me?
References: <488jl6$[e-mail]> <489chl$[e-mail]> <48beel$[e-mail]>
Date: Wed, 15 Nov 1995 02:39:42 GMT
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In article <48beel$[e-mail]> Burt Fisher <[e-mail]> writes:
>
>>>>who does this Burt think he is? A am a ham, have been since I was ten.
>Is your last name Barker? Certainly not Fox?



From Unknown Thu Nov 16 05:34:10 1995
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From: [e-mail] (David Feldman)
Subject: Re: What some think about sexy hams
Message-ID: <[e-mail]>
Followup-To: rec.radio.amateur.misc
Organization: Organization? Me?
References: <4825g6$[e-mail]> <487hjv$[e-mail]> <48be57$[e-mail]>
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In article <48be57$[e-mail]> [e-mail] (Don Welch) writes:
>[e-mail] (Jim Clarke) writes:
>
>>I've only been an amateur radio operator for 18 years and I would have to


From Unknown Thu Nov 16 05:34:11 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!nwnews.wa.com!news1.halcyon.com!chinook!ki7zd
From: [e-mail] (Randy Seacat)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.
Subject: Re: What some think about sexy hams
Date: 15 Nov 1995 05:55:18 GMT
Organization: Northwest Nexus Inc.
Lines: 72
Message-ID: <48bvc6$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <488jl6$[e-mail]> <489chl$[e-mail]> <48beel$[e-mail]>
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PEOPLE!!!

IGNORE THIS CRAP!!!

JUST LIKE ANYONE ELSE IN THE WORLD WITH A POOR ATTITUDE, IF YOU IGNORE THEM
THEY WILL GO AWAY!

(But I have to admit, the new burt signature is a roll!!) ahhaha

I dont many hams over 40 years old, so, I guys Im not a ham then.. Most
hams I know are all under 40, some under 20. And about 30% of them are women.
Its the 90's, and women enjoy hobbies of this sort also. More power to
the lady trying out for playboy, good luck to you. I used to date a model
that worked for "Hef".
You'll have fun im sure..

See ya all later...
ki7zd
Rock Musician, Lawyer, Author, artist, Ham, and above all, a father!


Burt Fisher <[e-mail]> writes:


>>>>who does this Burt think he is? A am a ham, have been since I was ten.
>>>>And thats before I had my first bra! And before I got my first modeling
>>>>job. Even before I had my first sex (with a ham btw). Grow up you creep!

>What a doll you must be. Having sex with an old fat white ham.
>Is your last name Barker? Certainly not Fox?

I dont a 19 year old woman cares too much for fat old men!

>>>>My boyfriend is NOT a ham, and even if he was, I would find him just as
>>>>attractive! Hey, Idea, how many "hams" have posed for playboy? Hummm,
>>>>maybe I'll be the first! Anyone know?
>>>>face it burt fisher, you hate women, you hate men, you hate yourself!

>I am not into dogs or pigs.

Calling yourself a pig now.. Good.....


>>>>Ciar
Love this name!

>>>>>xxxxxx <-callsign removed because this burt guy might bother me, and his
>>>>antenna probly isn't big enough for my tower's anyway!

>Come look at my erection (tower of course).


>>
>>>#================#=====================================================#
>>>|  Burt Fisher   |  Teacher of abuse, badmouthing and divorce          |
>>>| Amateur call   |         South Dennis, Ma. (Cape Cod)                |
>>>|    K1OInK       |  The more you say, the less people will forget      |
>>>#================#=====================================================#
>>>| [e-mail]                                [e-mail]  |
>>>#======================================================================#


H ahha ha hahahahah WHO DID THIS? this is funny....

Humm dont worry folks, this will soon stop..

--
/-/-/  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  | Amateur Radio Station                       Inet: [e-mail]
  | KI7ZD
  | WWA  CN87  73's    _._ .. __... __.. _..   "If RST > 519, Reduce Power!"


From Unknown Thu Nov 16 05:34:13 1995
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From: [e-mail] (Eric M. Bienert)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.rad
Subject: Re: What some think about sexy hams
Date: Wed, 15 Nov 1995 19:07:35 GMT
Organization: CAC
Lines: 7
Message-ID: <[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <48be57$[e-mail]>
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In article <48be57$[e-mail]> [e-mail] (Don Welch) writes:

>Speaking of HAM radios, could this group help me out?  Every time I go and
>dive with my radio set, the fuse blows.  What's the trick here?

maybe your submarine forgot to do it's 5 minute stop or left the screen doors
open.


From Unknown Thu Nov 16 05:34:13 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!torn!nott!bcarh189.bnr.ca!crchh327.rich.bnr.ca!news
From: Wieslaw Syposz <[e-mail]>
Newsgroups: rec.photo.technique.nature,rec.photo.technique.people,rec.ponds,rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment
Subject: Re: Will YOU Be The Grim Reapers NEXT Victim ??
Date: 15 Nov 1995 15:36:25 GMT
Organization: Bell Northern Research
Lines: 5
Message-ID: <48d1dp$[e-mail]>
References: <48a985$[e-mail]>
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Does it affect photographers more than other people?  If not, please kindly
remove that kind of comments from this group>
Cheers,
Wes



From Unknown Tue Nov 21 18:55:52 1995
Newsgroups: rec.radio.amateur.antenna
Subject: "tigertails"?
From: [e-mail] (Chris Smart)
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!usenet.eel.ufl.edu!spool.mu.edu!howland.reston.ans.net!newsfeed.internetmci.com!info.ucla.edu!library.ucla.edu!unixg.ubc.ca!van-bc!news.mindlink.net!uniserve!fonorola!news.crso.com!canrem.com!chris.smart
Distribution: world
Message-ID: <[e-mail]>
Date: Sun, 19 Nov 95 11:14:00 -0500
Organization: CRS Online  (Toronto, Ontario)
Lines: 12

Has anybody used one of these "tiger tails" on their 440 MHZ ht?  I would
rather build one then spend money for a little piece of wire; that is, if
they actually improve things.

So, how do I build one?  Does it matter if I use coax, or some other wire?

Responses to my email address [e-mail] are prefered.

Thanks for any info/experiences/instructions etc.

.. 73, VE3 SHT.  19 years old, and licensed since June 15, 1987!
___ Blue Wave/QWK v2.12


From Unknown Tue Nov 21 18:55:53 1995
Path: news.epix.net!news.sprintlink.net!malgudi.oar.net!gwis.com!uunet!in2.uu.net!winternet.com!alpha.sky.net!solar!chrism7
From: [e-mail] (Chris Morrison)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: "tigertails"?
Date: 20 Nov 1995 01:12:23 -0600
Organization: SkyNET Corporation
Lines: 24
Message-ID: <chrism7.816851451@solar>
References: <[e-mail]>
NNTP-Posting-Host: solar.sky.net

[e-mail] (Chris Smart) writes:

>Has anybody used one of these "tiger tails" on their 440 MHZ ht?  I would
>rather build one then spend money for a little piece of wire; that is, if
>they actually improve things.

>So, how do I build one?  Does it matter if I use coax, or some other wire?

>Responses to my email address [e-mail] are prefered.

>Thanks for any info/experiences/instructions etc.

>.. 73, VE3 SHT.  19 years old, and licensed since June 15, 1987!
>___ Blue Wave/QWK v2.12

Chris,

Just attach a 1/4-wave wire (electrical length...not necessarily physical
length) to the grounded part of the antenna connector.  It's just a
counterpoise, much like you commonly read about with indoor HF antennas.

73,
Chris Morrison KG5NK



From Unknown Tue Nov 21 18:55:54 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: /PN=Scott.C.Werling/O=wallace/PRMD=iadps/ADMD=attmail/C=us/@safe.ia.GOV
Newsgroups: rec.radio.amateur.antenna
Subject: (none)
Date: 19 Nov 95 00:09:01 GMT
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Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

>From /PN=Scott.C.Werling/O=wallace/PRMD=iadps/ADMD=attmail/C=us/ Sat Nov 18 18:12:38 CST 1995 remote from osiint.safe.ia.gov
Date: 18 Nov 1995 18:04:52 -0600
X400-Trace: US*ATTMAIL*IADPS
        arrival 18 Nov 1995 18:04:52 -0600
        action Relayed
From: /PN=Scott.C.Werling/O=wallace/PRMD=iadps/ADMD=attmail/C=us/@osiint.safe.ia.gov
To: "/RFC-822=Ham-Ant(a)UCSD.EDU/OU=OSI-INTERNET/O=WALLACE/PRMD=IADPS/ADMD=ATTMAIL/C=US/"@osiint.safe.ia.gov
In-Reply-To: <"\"/RFC-822=199511172236.OAA23632(a)mail.ucsd.edu/OU=OSI-INTERNET/O=WALLACE/PRMD=IADPS/ADMD=ATTMAIL/C=US/\""@osiint.safe.ia.gov>
Subject: RE: antenna tuner kit
Importance: normal
Autoforwarded: FALSE
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> Date: 17 Nov 1995 16:34:43 GMT
> From: [e-mail] (Cecil A. Moore~)
> Subject: Tuner Recommendation
>
> Antenna tuners are one of the few things that are still easy to homebrew.
> For half the cost of a new tuner, one can build a balanced antenna tuner.
> Fair Radio Sales has all the parts needed and I'm building one.
>
> 73, Cecil, KG7BK, OOTC  (not speaking for my employer)
> ------------------------------
Hi Cecil, I am a fairly new ham but little tech expertise; but learning.
I want to try to build an antenna tuner; assuming it isn't too terribly
complicated.  I haven't heard of Fair Radio Sales, any info on kits you
could forward to me would be appreciated.

Where does a person buy kits anymore?  Like the old Heathkit radios etc?

Scott N0XZY
[e-mail]
"Home of the World's Largest Spam Sigs, front and back!"



From Unknown Tue Nov 21 18:55:55 1995
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From: USCG TELECOMMS <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: 40 OHMS OF GROUND LOSS??
Date: Tue, 21 Nov 1995 08:06:22 -0500
Organization: Capital Area Internet Service [e-mail] 703-448-4470
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I HAVE A TOP LOADED VERTICAL (A TEE WITH 75' VERTICAL AND A 200' FLATOP)
WITH ABOUT 40 RADIALS LAYING ON THE GROUND.  THE RADIALS ARE A MIXTURE OF
40' AND 120 FOOT LENGTHS.  THE SYSTEM OPERATES ON 160 METERS AND ALL
WIRE, INCLUDING RADIALS, STILL HAVE THE INSULATION (#12 GUAGE).  ALL
RADIALS ARE GROUNDED AT THE FEEDPOINT.  I TUNE THIS ANTENNA WITH A
REMOTELY TUNED L NETWORK (THE NETWORK IS AT THE BASE OF THE ANTENNA).
EZNEC AND NEC/WIRES PREDICTS THE RESISTIVE COMPONENT TO BE PRETTY CLOSE
TO 50 OHMS WITH ABOUT A 300 OHM REACTIVE COMPONENT.  I RECENTLY USED AN
OLD BOONTON RX METER TO DETERMINE THE FEEDPOINT RESISTANCE; IT SAYS THE
RESISTANCE IS 90 OHMS.  THIS VALUE IS CLOSE BECAUSE WHEN IF I TUNE OUT
THE REACTANCE USING A SERIES CAPACITOR, THE SWR IS NEARLY 2:1.  WHERE IS
THIS EXTRA 40 OHMS COMING FROM, GROUND LOSS (I DOUBT IT), TREE LOSS, OR
WIRE LOSS?  ANYBODY OUT THERE WITH ANY IDEAS?.....RON, W4VR


From Unknown Tue Nov 21 18:55:56 1995
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From: [e-mail] (John N0ISL)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 80-10m plus WARCs with one wire?
Date: 21 Nov 1995 11:06:14 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 13
Sender: [e-mail]
Message-ID: <48stdm$[e-mail]>
References: <48dcim$[e-mail]>
Reply-To: [e-mail] (John N0ISL)
NNTP-Posting-Host: newsbf02.mail.aol.com

I've had great luck with the Fritzel FD-4. Its an off-center fed wire
antenna
that loads without a tuner on 80 thru 10 with the exception of 15 and 30m.
Those
two bands load perfectly with the tuner. Its about 105 feet long erected
and the center need not be above 32 feet. Check out the design of these
Windom antennas. 73 and good luck DX'ing

John N0ISL

John Douglas, N0ISL
AX.25 N0ISL@KZ7I.#MSP.MN.USA.NOAM
I'm in Minnesota only because I must be somewhere!


From Unknown Tue Nov 21 18:55:57 1995
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From: Ian G3SEK <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 9913 coax & condensation
Date: Fri, 17 Nov 1995 13:09:10 GMT
Organization: IFWtech
Lines: 65
Message-ID: <[e-mail]>
References: <48gi7v$[e-mail]> <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: ifwtech.demon.co.uk
X-Broken-Date: Friday, Nov 17, 1995 13.09.10
X-Newsreader: Newswin Alpha 0.7

Tony, G3SKR wrote in response to "PTracy":
:
: > Been thinking of piercing a VERY SMALL hole in the coax (inside) through
: > the outer braid/foil, and through the outer layer of dialectric.  Then, I
: > can make a metal clamp complete with "O" ring seals and a Schraeder valve
: > type fitting, etc... to cover the punctured spot, and pissing a little
: > Nitrogen through this adaptor or fitting and into the coax.  I have no
: > idea how well the N connectors will seal, in fact I am sure they wont, but
: > this will supply some dry (low dew point) gas into the air space and
: > possibly preventing condensation.  Is this a really bad idea?
:
: Unless you intend and are able to maintain at least some miniscule amount
: of perpetual positive internal pressure from a source of dry nitrogen from
: now and hereafter (weekends, vacations, etc. not excepted), I would wish
: to discourage you. Leaky connectors are not a problem apart from the cost
: of the lost gas, so long as your supply is up to maintaining the pressure.
: Also I am not familiar with 9913 construction and I don't know whether the
: positive pressure will propagate throughout the cable braid along your
: full run.  If the gas pressure does not propagate, then the protection
: will only be local to your access point and fairly useless.  Finally,
: doing this to a fairly old cable may be bolting the barn door too late.

Tony's right: you have to maintain positive pressure in the cable
forever afterwards.

I've been doing that with a 150ft run of 7/8in airspaced heliax for the
past ten years, using a small fish-tank pump. But positive pressure is
not enough - it also needs to be dry air, because otherwise in winter
you get condensation in the cold parts of the cable outside. I've had
some success with a tube of silica gel crystals (self-indicating type
which starts out blue and turns pink when saturated with water) but
it takes some dedication to keep up with changing the gel every week
in winter, and baking it on a tray in the oven to regenerate the used
crystals.

Owing to various lapses on my part, the attenuation of the cable
has definitely crept up by a few tenths of a dB over the years.

Since I use Westflex 103 (semi-airspaced rather like 9913) for the
jumper around the rotators, the air pressure propagates all the
way through into the preamp box, where it's a great benefit in keeping
water out. Solid-dielectric cable such as RG213 provides too much flow
resistance to pressurize anything effectively at the far end.

Air pressure propagates right on through ordinary in-line N connectors,
leaking past the PTFE washers, but it would be stopped by a chassis
socket. The seal between properly installed in-line N connectors and
the outside environment is very good, especially if you tape over the
whole joint.

When eventually I replace the semi-airspaced 7/8in with foam, I'll
probably  continue to use the pump and silica gel, just to keep the
preamp box pressurized. The foam cable has a hollow inner conductor,
so air pumped into the side of one connector will still appear in the
connector at the far end, and will then leak onwards through the
jumper cable and into the preamp box.


--
73 from Ian G3SEK            Editor, 'The VHF/UHF DX Book'
                            'In Practice' columnist for RadCom (RSGB)
Professionally:
IFW Technical Services       Clear technical English - anywhere.



From Unknown Tue Nov 21 18:55:58 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netcom.com!alfoders
From: [e-mail] (Al Foders)
Subject: Alford Slot Antenna Designs
Message-ID: <48r0rc$[e-mail]>
Sender: [e-mail]
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
X-Newsreader: News Xpress Version 1.0 Beta #4
Date: Mon, 20 Nov 1995 22:52:28 GMT
Lines: 10

I would appreciate any information on designing the Alford Slot antenna.

Impedance characteristics, dimensions, fabrication hints, construction
materials, technical papers, advice, encouragements, etc...

Any and all information will be appreciated.  No one will be turned away!!

Please post to the group or email to me: [e-mail]

73 de KB4RTG>>>


From Unknown Tue Nov 21 18:55:59 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!news.flinet.com!news1.inlink.com!usenet
From: [e-mail] (Gary V. Deutschmann, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Antenna Info required
Date: Tue, 21 Nov 1995 18:00:54 GMT
Organization: Inlink
Lines: 32
Message-ID: <48t3uf$[e-mail]>
References: <48bno3$[e-mail]>
NNTP-Posting-Host: slip217.inlink.com
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Jeff Hill) wrote:

>Hi,

>I am placing this message for my brother who is into designing antennas for the
>family/friends and requires some info on Antenna design. If this is not the
>appropriate newsgroup, please let me know where I should post this message.

>He is interested in text documents or programs on FTP sites or even books on the
>following:

>Antenna design
>Yogi Antenna Optimizers
>Designing Yogi Array
>Gamma matching
>Phased Array Design

>If you have any info please post into this newsgroup or back to me, whichever
>you think appropriate.

>Thanks for your time

>Jeff


It's the right newsgroup Jeff!
Unfortunately, I don't remember the name of the books to recommend.
I do know which one to tell you to stay away from though, the ARRL
Antenna Book.  Overpriced, Over-rated, not much useful information.
Gary - KG0ZP




From Unknown Tue Nov 21 18:56:00 1995
Path: news.epix.net!news.sprintlink.net!malgudi.oar.net!catseye.bluemarble.net!usenet.ucs.indiana.edu!vixen.cso.uiuc.edu!sdd.hp.com!swrinde!newsfeed.internetmci.com!news.kei.com!simtel!swidir.switch.ch!scsing.switch.ch!news.belwue.de!news.uni-ulm.de!rz.uni-karlsruhe.de!news.uni-stuttgart.de!deap1032
From: [e-mail] (Bruegemann)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Antenna Theory references ??
Date: 16 Nov 1995 09:12:41 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 18
Message-ID: <48eva9$[e-mail]>
References: <hbaker-1111951457300001@10.0.2.15>
NNTP-Posting-Host: servus11.rus.uni-stuttgart.de

>Physics tells us about 'black body' radiation, where the best radiator is
>also the best receiver.  But is it possible for an antenna to grab _all_ of
>the impinging radiation without having any of it reflect away?

>So what does a 'black body' antenna look like?

Hi,

Here you are really confusing two things. the best absorber (black body)
for radio waves is the paint they put on stealth fithter planes. I would
not recomend for antennas, although it will help to prevent  reflection of
incoming signals.

An antenna should convert EM fields into currents on an transmission line,
without too much losses. It is your receiver first stage that should be
matched such that no reflections occur.

73, Moritz DL5UH


From Unknown Tue Nov 21 18:56:01 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!usenet.eel.ufl.edu!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netcom.com!NewsWatcher!user
From: [e-mail] (Henry Baker)
Subject: auto am/fm radio antenna questions
Message-ID: <hbaker-1711952015400001@10.0.2.15>
Sender: [e-mail]
Organization: nil organization
Date: Sat, 18 Nov 1995 04:15:40 GMT
Lines: 29

Due to a burglary, I had to replace the radio in my wife's car.  I wanted
to get as good reception as possible on both the AM & FM bands, and the
installer didn't do such a hot job, but I'm not so sure that he could
do much better, since none of the people at the installation place really
knew very much about radios.

I looked through the information that came with my automobile radio, and
couldn't find anything regarding the following questions:

1.  What is the characteristic impedence of the coax to the antenna from
the am/fm radio?

2.  The cables I saw at radio shack had a capacitor in the end that plugged
into the radio.  My old cable had a 100 pf capacitor in series with the
inner wire of the coax.  What is the function of this capacitor, and is
this the correct value?

3.  The replacement antennas at radio shack indicated that one should
'tune' the radio in the AM band after installing the antenna by adjusting
some sort of 'trim' screw.  I looked at all the radios at radio shack and
could find none with such a trim screw.  Is this some sort of impedence
matching device?  If so, why don't radios have it any more?  (Is it because
no one cares about AM anymore?)

Thanks in advance for any help on these questions.

--
www/ftp directory:
ftp://ftp.netcom.com/pub/hb/hbaker/home.html


From Unknown Tue Nov 21 18:56:02 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Balun on R7
Date: 18 Nov 1995 14:27:09 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 55
Sender: [e-mail]
Message-ID: <48lc2d$[e-mail]>
References: <48g0e5$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Hi Jim,
In article <48g0e5$[e-mail]>, [e-mail] (Jim
Cummings) writes:

>Would you be kind enough to explain why a balun is needed for that
>antenna?
 I'll try.

>The R7 is a half-wave antenna

Nope, it's shorter than that. It may be loaded to appear like a half wave,
but it isn't an actual half-wave on any band. It is an asymmetrical
vertical with a very small counterpoise.

>Thus which, without the impedance
>matching network at the base, theoretically is an open circuit.  In real
>like the impedance could be measured in terms of thousands of ohms.

Probably not. If it were, they would have a hard time feeding it on multi
bands!!! The element is short. Plus the end impedance of a real half-wave
varies with L/D ratio of the element, and can range from a few hundred
ohms for a thick conductor to a few thousand ohms for a very thin wire.

There was a thread covering this, I think it was end feeding a 40 meter(?)
vertical.

>the impedance matching networks allows the amateur to use easily
>available 50 ohm coaxial cable to match the antenna to the line.  Why on
>earth would anyone want to put a balun there?

Because the ground plane at the bottom is too small to establish a good
ground reference. Considerable voltage exists at it's junction to the
antenna element. Since the feedlines shield indirectly couples to that
point, unwanted parallel current will flow.

>The inclusion of a balun would probably introduce wierd circulating
currents because >the input to the impedance matching network is expecting
to looking at a 50 ohm >line.

Not at all. As a matter of fact, the exact opposite occurs. Without a
choke balun, unwanted parallel mode currents flow down the feedcable since
the ground plane is so very tiny in that antenna. The transformer at the
base of the R7 reduces the parallel currents, but does not entirely
eliminate them. The balun cures it while still presenting the correct 50
ohm source to the antenna.

I use choke baluns on all my antennas. During technical calls about RFI or
RF feedback, the first step is always to ask if that general type of
antenna is being used.
In most cases, I always recommend adding a choke balun. By the way, I
generally handle several severe RFI and RF feedback complaints a year when
R7's and similiar (cough) "ground independent" antennas are used with
amplifiers!

73 Tom


From Unknown Tue Nov 21 18:56:03 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!spool.mu.edu!bloom-beacon.mit.edu!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!newsfeed.internetmci.com!in2.uu.net!news.ios.com!robertm
From: [e-mail] (robert morgenstern)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: BARE wire source?
Date: 16 Nov 1995 03:37:09 GMT
Organization: Internet Online Services
Lines: 22
Message-ID: <48ebl5$[e-mail]>
References: <489ah5$[e-mail]>
NNTP-Posting-Host: styx.ios.com
X-Newsreader: TIN [version 1.2 PL2]

Gary Schwartz ([e-mail]) wrote:

: While we're on the subject of sources for magnet/enameled wire, does
: anyone know of a source for bare wire in 20-24 ga sizes?  I've checked
: with wire and cable distributors and all they have is 20/22 ga tinned bus
: wire at a pretty hefty price.

: --
: 73, Gary K9GS    (You have to STOP the Q-Tip when there's resistance !)
:          ________________________________________________________________
:         |                                                                |
:         | Gary Schwartz  K9GS           E-Mail: [e-mail] |
:         | Society of Midwest Contesters   Packet:[e-mail] |
:         | Greater Milwaukee DX Association Secretary/Treasurer           |
:         |________________________________________________________________|

Gary;
Try T.V. repair shops for old yokes. They will give them to you for free.
I'm not sure how fine a gauge the wire is and it also has a fine enamal
coat which comes of very easily with steel wool. Hey..its free.
Bob..WA2EAW



From Unknown Tue Nov 21 18:56:05 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!dish.news.pipex.net!pipex!europa.chnt.gtegsc.com!paladin.american.edu!gatech2!newsfeed.pitt.edu!uunet!in1.uu.net!interaccess!usenet
From: [e-mail] (Tom Geletka N9CBA)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: beam w/ no reflector?
Date: Sat, 18 Nov 1995 04:55:55 GMT
Organization: InterAccess, Chicago's best Internet Service Provider
Lines: 21
Message-ID: <48jmar$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: d130.he.interaccess.com
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Roger A. McCarty) wrote:

>I am contemplating building a 3 element beam for the 6 meter band, using the
>arrl yagi modeling program. It has occurred to me that on this band, and
>considering that my main purpose is to use it on an AM round table where many
>long path individuals will be west, and many locals to the east, that maybe a
>3 element sans reflector would be a good design choice. Is there any inherent
>problems with this design (other than poor f/b, which I hope to put to
>use) that I am not aware?

>Thanks in advance

>Roger KD6CC

If I remember correctly, a two element antenna with a resonate
parasitic element and 0.25 wavelength spacing gives equal lobes. That
makes the paracitic element at the crossroads between being a
reflector and a directtor.
Tom
N9CBA



From Unknown Tue Nov 21 18:56:06 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!nntp.crl.com!crl5.crl.com!not-for-mail
From: [e-mail] (Henry B. Smith)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc
Subject: Before you respond to Burt
Date: 18 Nov 1995 21:58:00 -0800
Organization: Dallas, TX
Lines: 34
Message-ID: <48mh18$[e-mail]>
NNTP-Posting-Host: crl5.crl.com
X-Newsreader: TIN [version 1.2 PL2]
Xref: news.epix.net rec.radio.amateur.homebrew:11656 rec.radio.amateur.antenna:17215 rec.radio.amateur.digital.misc:12699

Please, those of you who are responding to the "Burt" posts are not just
posting to this newsgroup, you are also posting to:

rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,
rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,
rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,
rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,
rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,
rec.scouting,rec.scuba,rec.skiing.alpine

These newsgroups are included in the "reply to" part of the header of the
"Burt" messages.

Some of these newsgroups have nothing to do with ham radio and they are
rightfully complaining.

This is not my attempt to be a "newsgroup cop".  Some of you simply
were not aware of this crossposting issue.

Burt seems to be attempting to show the dark side of hamdom and by using
this crossposting technique,  He is succeeding.

BTW, I am crossposting this message (hopefully) to the following
newgroups:
    rec.radio.amateur.digital.misc
    rec.radio.amateur.homebrew
    rec.radio.amateur.antennas

If you wish to respond to me, do it directly to [e-mail]. Dont bother the
newsgroups.

--
Henry Smith ([e-mail])



From Unknown Tue Nov 21 18:56:07 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsjunkie.ans.net!butch!news.sanders.com!usenet
From: FSPAULDI <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Big wheel antenna
Date: 19 Nov 1995 20:41:36 GMT
Organization: SANDERS - A Lockheed Martin Company
Lines: 9
Message-ID: <48o4q1$[e-mail]>
NNTP-Posting-Host: 129.86.35.154
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Windows; I; 16bit)

Does anyone have any info on the Big Wheel antenna (especially design
info)?  It was invented by Carl Milner W1FVY/K1JSG in the early
60's...was omnidirectional, horizontally polarized.  I think Cush-Craft
might have manufactured them for a while, too.  Any info would be
appreciated.


Disclaimer -- not speaking for my employer!!



From Unknown Tue Nov 21 18:56:08 1995
Newsgroups: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!sparky.insinc.net!newsfeed.direct.ca!imci2!newsfeed.internetmci.com!news.kei.com!simtel!col.hp.com!news.dtc.hp.com!hplextra!hplb!hpwin055.uksr!hpqmoea!dstock
From: [e-mail] (David Stockton)
Subject: Re: Burt Fisher jokes not funny
Sender: [e-mail] (SQF News Admin)
Message-ID: <[e-mail]>
Date: Thu, 16 Nov 1995 12:52:13 GMT
References: <4867e4$[e-mail]>
Nntp-Posting-Host: hpqmocc.sqf.hp.com
Organization: Hewlett-Packard LTD, South Queensferry, Scotland
X-Newsreader: TIN [version 1.1 PL8.8]
Followup-To: rec.radio.swap,rec.radio.shortwave,rec.radio.scanner,rec.radio.amateur.space,rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Lines: 15
Xref: news.epix.net rec.radio.swap:51097 rec.radio.shortwave:66148 rec.radio.scanner:40777 rec.radio.amateur.space:5765 rec.radio.amateur.policy:31900 rec.radio.amateur.misc:94399 rec.radio.amateur.homebrew:11612 rec.radio.amateur.equipment:21470 rec.radio.amateur.digital.misc:12651 rec.radio.amateur.antenna:17158

Burt Fisher ([e-mail]) wrote:


: Then why do I get frequent messages that appreciate my comments?


    Is this the first contact with non-human sapient entities ?

    Or is someone going to suggest that any message that likes Burt's
humour..........   No,  who would be so cruel ?


     Cheers,
              David



From Unknown Tue Nov 21 18:56:09 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!usenet.eel.ufl.edu!mandrake!jnh
From: [e-mail] (Jordan Hazen)
Newsgroups: rec.radio.amateur.antenna,rec.audio.tech
Subject: Re: CATV+PC+CD+RECEIVER=HUMMMMM!
Date: 20 Nov 1995 15:11:19 GMT
Organization: University of Florida, Dept. of Electrical Engineering
Lines: 15
Message-ID: <48q5qn$[e-mail]>
References: <48p1at$[e-mail]>
NNTP-Posting-Host: mandrake.cen.ufl.edu
Xref: news.epix.net rec.radio.amateur.antenna:17235 rec.audio.tech:24884

> [ground loop-induced hum problem]

Try disconneting or bending out the outer shields of your
computer->stereo RCA patch cables (on the stereo end).  If this
doesn't help, an isolation transformer, sold by Radio Shack for about
$15, should solve the problem.

BTW, anyone want to comment on possible distortions that might be
introduced by these devices?  I've been using one for some time with
no audible artifacts, but undoubtedly there must be at least some due
to hysteresis in the transformer core, magnetic coupling between the
left & right channels, etc...

--
Jordan.


From Unknown Tue Nov 21 18:56:09 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Collapsible HT antenna ?
Date: Fri, 17 Nov 1995 05:52:10 GMT
Organization: Netcom
Lines: 13
Message-ID: <48ii03$[e-mail]>
NNTP-Posting-Host: ix-rea-pa1-11.ix.netcom.com
X-NETCOM-Date: Fri Nov 17  9:49:55 AM PST 1995
X-Newsreader: Forte Free Agent 1.0.82

Looking for information on collapsible HT antennas.
Particularly interested in dual band antennas for 2m/70cm HTs.
Do they tell you what length to extend it to for the "other" band, or
are they true dual band antennas?  (I know the Radio Shack version
does exactly that!)

I also wonder if it's worth the trouble to get one of these antennas?
I plan on using it when traveling for greater range.  Any brand
information, suggested retailers, etc. would be greatly appreciated.

                                        Thanks.. Mike  (WB3LBH)




From Unknown Tue Nov 21 18:56:10 1995
Path: news.epix.net!news.sprintlink.net!news.accessone.com!news
From: [e-mail] (Dave Whitney)
Newsgroups: rec.radio.amateur.antenna
Subject: Combining antennas for scanner
Date: 20 Nov 1995 20:14:24 GMT
Organization: Whitney Computer Service
Lines: 6
Message-ID: <48qnj0$[e-mail]>
NNTP-Posting-Host: davew.accessone.com
Mime-Version: 1.0
Content-Type: Text/Plain; charset=ISO-8859-1
X-Newsreader: WinVN 0.99.5

Looking to have two antennas, one for 43Mhz and one for the 150-450Mhz range,
coinnected to a BNC T connector on th back of the scanner. What is, or is there
a correct way to do this and what recommendations do you have for it?

DaveW



From Unknown Tue Nov 21 18:56:11 1995
Path: news.epix.net!news.sprintlink.net!news.accessone.com!news
From: [e-mail] (Dave Whitney)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Combining antennas for scanner
Date: 21 Nov 1995 14:50:41 GMT
Organization: Whitney Computer Service
Lines: 26
Message-ID: <48sp01$[e-mail]>
References: <48qnj0$[e-mail]> <[e-mail]>
NNTP-Posting-Host: davew.accessone.com
Mime-Version: 1.0
Content-Type: Text/Plain; charset=ISO-8859-1
X-Newsreader: WinVN 0.99.5

If anyone knows more about this I'd really like to here form you about how to
do it.

DaveW

In article <[e-mail]>, [e-mail] says...
>
>In article <48qnj0$[e-mail]> [e-mail] (Dave Whitney)
writes
>:
>
>
>
>>Looking to have two antennas, one for 43Mhz and one for the 150-450Mhz range,
>>coinnected to a BNC T connector on th back of the scanner. What is, or is
there
>
>>a correct way to do this and what recommendations do you have for it?
>
>>DaveW
>
>I asked the same question and from what I understand, it's more complicated
>than that. You'd have to attach each antenna to special circuitry to match
>impedances....I don't know very much about it only that it's more complicated
>than simply connecting the two antennas together.



From Unknown Tue Nov 21 18:56:12 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail] (Pat Barthelow, AA6EG)
Newsgroups: rec.radio.amateur.antenna
Subject: Connector Grease, ZnCr paint
Date: 18 Nov 95 15:45:12 GMT
Organization: Monterey Gaming System - Monterey, CA - [phone]
Lines: 34
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]


                             Connector Grease, Zinc Chromate

Anyone have experience or knowledge of the effect of directly
applying silicone grease to mating surfaces of RF connectors, with
the intent of reducing corrosion or intrusion of moisture, in antenna
feedlines?  Will a PL-259, BNC, or N connector have any less metal
to metal surface area in contact with each other if something like
Dow Corning grease is applied prior to connnection?  Most of my use
is at HF, 3-30mHz, so impedance bumps are not a real problem, but
I am also curious, if the presence of Dow Corning inside the
connector adversely affects it's 50 ohm matched properties, really
only a possible problem at  UHF or Above....

Another Item:

Somewhere, an antenna thread had a comment about use of partially
conductive paints being applied to aluminum beams for anti corrosion
purposes.  It was said, that skin effect causes the RF current to seek
the surface of the conductor, and that at HF and above this current
flow can occupy as little as a couple of mils of depth of the
conductor.  That being the case, what does the RF do when it
"sees" Zinc Chromate paint covering the surface of the aluminum....
does it try to come to the surface of the Zinc Chromate, and it's
possible poor conductivity, or does the ZnCr have any bad effects,
dissipating any significant power?  Or does the RF lurk below the
Zinc Chromate in the aluminum and stay happy?

Bairlig!  (Tuvan for So Long!)

Patrick Barthelow, AA6EG


[e-mail]


From Unknown Tue Nov 21 18:56:13 1995
Path: news.epix.net!news.sprintlink.net!nntp.primenet.com!nntpdist.primenet.com!ip211.phx.primenet.com!reptile
From: [e-mail] (Mike)
Newsgroups: rec.radio.amateur.antenna
Subject: dual band antenna vs.  two antennas
Date: Fri, 17 Nov 1995 23:23:53 MST
Organization: Primenet
Lines: 2
Distribution: world
Message-ID: <[e-mail]>
NNTP-Posting-Host: ip211.phx.primenet.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #4]

I want to get a dual band mobile. Is it better to get a seperate 2 meter and
440 antenna or a single dual band antenna?


From Unknown Tue Nov 21 18:56:14 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!howland.reston.ans.net!torn!nott!cunews!cheungw
From: [e-mail] (Wendy Wing Chi Cheung)
Subject: ELNEC/EZNEC: Need help in modeling ground
X-Nntp-Posting-Host: solomon.sce.carleton.ca
Message-ID: <[e-mail]>
Keywords: ELNEC, Shield Modeling
Sender: [e-mail]
Organization: Systems & Computer Engineering Department, Carleton University, Ottawa, Canada
Date: Sun, 19 Nov 1995 00:44:18 GMT
Lines: 41

Hi ELNEC users:

I have troubling modeling a loop antenna in free space.  One leg is
Strip line fed, the other is connected to ground.   I don't know how
to connect the leg to ground in free space.  The impedance is 50 ohms,
an unbalanced system.

Picture of antenna:
 --------------------
|                   |
|   -----------------
|   |
|   |
(1)  (2)

(1) is Strip line feed.
(2) is connected to ground.

My other more general question involves modeling a polygonal shaped
metallic shielding in free space.

One ELNEC user has pointed out the ELNEC is not capable of modeling a real
ground as part of the antenna system.  I need a full NEC implementation,
such as EZNEC.

Does that mean I can't model the polygonal shielding in free space?
I also notice the impedance of my simulation is not quite right.
IF so, I will need to look for an inexpensive NEC.
Does anyone have information on EZNEC?

Thanks in advance.

Regards,
Wendy Cheung
[e-mail]

--
=============================================================================
Wendy W.C. Cheung                                     [e-mail]
Systems Engineering (Communications)                  Tel. [phone]
Carleton University                                   Fax. [phone]


From Unknown Tue Nov 21 18:56:15 1995
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From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 15 Nov 1995 18:52:46 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 54
Sender: [e-mail]
Message-ID: <48duge$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <[e-mail]>,
[e-mail] (WB3U) writes:

>
>My point was, when a balun is used, the impedance/voltage at the
>feedpoint would be much more critical in determining whether the system
>could be expected to work properly than its SWR.  That's particularly
>true considering the relatively low (for non-resonant dipoles) range of
>SWR quoted by Cecil.

That's true, but choke baluns have little problem with differential
voltage. It's the common mode current and voltage that are the real
problem. The G5RV is a good antenna in this respect because the feedline
has a Vp nearly the same in either mode, and the terminal impedance at the
end of the ladder line more accurately reflects the stress on the current
balun. In other words, the design limits random errors, since the feedline
and antenna element are of fixed types and lengths.

>Misleading advertising that works well in conjunction with the lack
>of disclosure by tuner manufacturers.  There are still many, many hams
>who don't realize that a T-network with a balun is not an appropriate
>method of feeding a system that presents high feedpoint impedances.

And the G5RV limits this impedance on several bands! Of course an open
wire fed dipole could do that if antenna and feedline lengths and styles
were defined correctly.

>>> They may be the best attempt yet to achieve a reasonable impedance
>>> on as many bands as possible with a single wire
>>
>>Cheap and simple. Nuff said!
>
>Cheap and simple isn't sufficient to qualify anything as a desirable
>antenna.  I'm sure we've both QSO'd plenty of guys who were entirely
>satisfied with a piece of RG-8 connected to an end-fed wire or even
>their rain gutter.  Actually, I suspect many of those systems are
>jhust as efficient as a G5RV, if not more so.

Gee, my G5RV works very well. I can't hardly tell the difference between
it and a open wire line fed dipole or a coax fed dipole up through 20
meters. Common guys, lighten up. Less than 3:1 without a tuner isn't bad
on 80, 40, and 20 out of a no trap antenna! If anyone thinks a 3:1 or less
is bad, they need a serious lesson on transmission line efficiency vs SWR.

On the other hand, a ladder line fed dipole can vary from a few ohms to
several thousand ohms depending on the length of line and element. Try to
match that with a "T" net tuner and voltage balun, or even a KW Matchbox!
I'm not saying the line and antenna length can't be trimmed to present a
more moderate impedance. I am saying telling someone to throw any old
length of ladder line on any length of dipole is asking for trouble. All
of these antennas are compromises, and the G5RV is one of the best and
most predictable designs.

73 Tom


From Unknown Tue Nov 21 18:56:16 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 16 Nov 1995 16:36:11 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 23
Distribution: world
Message-ID: <48fp9r$[e-mail]>
References: <4898jf$[e-mail]> <48afhf$[e-mail]> <[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <[e-mail]>,
WB3U <[e-mail]> wrote:

>My point was, when a balun is used, the impedance/voltage at the
>feedpoint would be much more critical in determining whether the system
>could be expected to work properly than its SWR.  That's particularly
>true considering the relatively low (for non-resonant dipoles) range of
>SWR quoted by Cecil.

Hi Jack, but one point that newer hams may not realize is: the lower the
SWR, the closer to the characteristic impedance of the transmission line
is the load. Low SWRs represent an easier-to-match and a more narrow range
of impedances that the tuner must match. High SWRs represent a broader and
tougher range of impedances that a tuner must match. The extremes of the
broad ranges cause considerable losses in the tuner (and balun).

IMO, it is an advantage to get one's SWR as low as possible *before* worrying
about matching the impedance. A small SWR circle on the Smith Chart limits
the range of possible impedances that the tuner sees which, in general, results
in neglible losses in the tuner. The G5RV seems to have achieved this condition
(by accident) on some HF bands.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Tue Nov 21 18:56:17 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!news.ssd.intel.com!chnews!scorpion.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 17 Nov 1995 18:07:10 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 29
Distribution: world
Message-ID: <48ij0e$[e-mail]>
References: <[e-mail]> <48duge$[e-mail]>
NNTP-Posting-Host: scorpion.ch.intel.com

In article <48duge$[e-mail]>,
W8JI  Tom <[e-mail]> wrote:

>That's true, but choke baluns have little problem with differential
>voltage. It's the common mode current and voltage that are the real
>problem.

OTOH, It would seem that a voltage balun has little problem with
common mode currents since they tend to neutralize each other's
fluxes in the core. Is it true that a voltage balun is relatively
unaffected by common mode currents and the worst that can happen
is feed-line radiation? If so, one could equalize the differential
currents with series L's or C's and forget about feedline radiation
unless, of course, it is excessive.

>And the G5RV limits this impedance on several bands! Of course an open
>wire fed dipole could do that if antenna and feedline lengths and styles
>were defined correctly.

Consider this: If one knows the SWR on the ladder-line and the location
of a current node, one knows the impedance looking into the ladder-
line. Then one can decide if the impedance is so outrageous that some-
thing needs to be done. If something needs to be done, the same Smith
Chart that gives one the impedance looking into the transmission line
will tell one where to hang a stub to cure the problem. The stub can
be a quick connect/disconnect item close to the transmitter. I can
visualize a stub per band that drops the SWR on the ladder-line to 1:1

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Tue Nov 21 18:56:19 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!agate!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: G5RV: It wants 70 feet of coax?
Date: 19 Nov 1995 18:55:33 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 37
Sender: [e-mail]
Message-ID: <48og5l$[e-mail]>
References: <48ij0e$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Hi Cecil,

In article <48ij0e$[e-mail]>, [e-mail]
(Cecil A. Moore~) writes:

>OTOH, It would seem that a voltage balun has little problem with
>common mode currents since they tend to neutralize each other's
>fluxes in the core. Is it true that a voltage balun is relatively
>unaffected by common mode currents and the worst that can happen
>is feed-line radiation? If so, one could equalize the differential
>currents with series L's or C's and forget about feedline radiation
>unless, of course, it is excessive.

Actually a voltage balun does a good job of neutralizing current balance
if the load impedance is not perfectly balanced with respect to ground!
 ;-) Is this going to be another balun thread?

>>And the G5RV limits this impedance on several bands! Of course an open
>>wire fed dipole could do that if antenna and feedline lengths and styles
>>were defined correctly.
>
>Consider this: If one knows the SWR on the ladder-line and the location
>of a current node, one knows the impedance looking into the ladder-
>line. Then one can decide if the impedance is so outrageous that some-
>thing needs to be done. If something needs to be done, the same Smith
>Chart that gives one the impedance looking into the transmission line
>will tell one where to hang a stub to cure the problem. The stub can
>be a quick connect/disconnect item close to the transmitter. I can
>visualize a stub per band that drops the SWR on the ladder-line to 1:1

I use stub tuned lines when I want to run very high power. Switching the
stubs is a pain in the *** !

Anyway, this is getting away from the real question here about G5RV's,
coax, SWR and performance. BTW Cecil, don't you use a G5RV?

73 Tom


From Unknown Tue Nov 21 18:56:20 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news1.is.net!news1.i1.net!imci2!newsfeed.internetmci.com!news.kei.com!simtel!news3.noc.netcom.net!ix.netcom.com!netcom.com!jgardner
From: [e-mail] (Jerry Gardner)
Subject: Re: Gaps...the antenna issue that won't die
Message-ID: <[e-mail]>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
X-Newsreader: TIN [version 1.2 PL1]
References: <[e-mail]> <48378g$[e-mail]>
Date: Wed, 15 Nov 1995 20:13:56 GMT
Lines: 15
Sender: [e-mail]

The2X4 ([e-mail]) wrote:
: In article <[e-mail]>, [e-mail] writes:

: You would have been an S9 had you put that kind of money in a simple wire
: radiator system that works all the time.

Carl,

Please tell me how someone can put an 80M or even a 40M wire dipole in
a yard that measures 10'x12'?

The Gap is for those of us who, for whatever reasons, just don't have the
space to erect wire antennas or lay out large radial systems.
--
Jerry Gardner          | Maintainer of the Large Format Digest
[e-mail]    | Send subscription requests to [e-mail]


From Unknown Tue Nov 21 18:56:21 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!in2.uu.net!news.ios.com!robertm
From: [e-mail] (robert morgenstern)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Good Magnet Wire Source ?
Date: 16 Nov 1995 03:20:54 GMT
Organization: Internet Online Services
Lines: 25
Message-ID: <48eamm$[e-mail]>
References: <4822bc$[e-mail]> <[e-mail]>
NNTP-Posting-Host: styx.ios.com
X-Newsreader: TIN [version 1.2 PL2]

WB3U ([e-mail]) wrote:
:    Jack Jeffery <[e-mail]> wrote:

: >Does anyone have a recommendation for a good source of magnet wire?  I
: >use magnet wire for making my antennas invisible (I have antenna
: >restrictions at my QTH), and have been buying Radio Shack's wire.

: Try a local company that rebuilds electric motors.  In my experience,
: they're more reasonably priced for small quantities.  Also, the
: insulation appears to be better quality, probably because they buy
: wire that must withstand considerable heat.  The ones in my area also
: carry enameled wire at 14 and 12 gauge, perfect for baluns and high
: power RF transformers.

: 73,

: Jack  WB3U
I have used sneaky antennas in the past. I found a good source of " fine "
wire was the yokes of old T.V. sets. Some repair shops I called on the
phone were glad to let me have some yokes for free. Hundreds of feet of
enamaled wire. I found that if I used the wire for a long wire, end fed,
the wire will sag and 200', became 215' in about a week. But its free and
very fine gauge.
73'2 and gud luck,Bob, WA2EAW



From Unknown Tue Nov 21 18:56:21 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!news.kei.com!world!blanket.mitre.org!linus.mitre.org!usenet
From: Lee Goldschmidt <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Good Magnet Wire Source ?
Date: 17 Nov 1995 21:47:01 GMT
Organization: The MITRE Corp.
Lines: 8
Message-ID: <48ivsl$[e-mail]>
References: <4822bc$[e-mail]> <48e594$[e-mail]>
NNTP-Posting-Host: m23480-mac.mitre.org
Mime-Version: 1.0
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Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Macintosh; I; 68K)
X-URL: news:48e594$[e-mail]



        Parden my asking, but are there particular properties that are
characteristic to magnetic wire. Kindly explain.

                Thanks - Lee




From Unknown Tue Nov 21 18:56:23 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!freenet3.freenet.ufl.edu!afn17891
From: "Thomas W. Castle" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Ham-M vs Ham IV queries
Date: Sat, 18 Nov 1995 01:06:14 -0500
Lines: 23
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: freenet3.afn.org
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <[e-mail]>

On Fri, 17 Nov 1995, Sandy Lynch wrote:
> Just curious ......are the physical dimensions of the HAM-M different
> from the HAM-IV?  The Ham-IV is just a tiny bit too big for my tower. ;-(
> Also ... anybody know what the maximum windloading is on the Ham-M?
> I want to put 16 sq ft worth of yagis on the tower ... and not sure if
> the Ham-M would turn it ... or if I would have to resort to the TELREX
> chain drive rotator (that mounts outside the tower) that came with it.
>
> Thanks for any comments.
> 73, Sandy WA6BXH
> [e-mail]

Hi Tom here: better stick to what came with it... The CDE Ham M rotor
wont like the wind-load or turning torque for long. The Ham II, III
or IV would handle it especially if you used load bearing at top of
tower... I had 6 ele. <with 36' boom an 70lbs of dead weight> at abt
100' for over 10 years same Ham IV rotor in Pt. St. Lucie, Fl.
It even survived the so-called hurricane David... There aren't any
short cuts or easy way outs for big antennas' an tall towers...
If you try an take one, they usually come back an haunt you...

G/L De Tom KD4QHH



From Unknown Tue Nov 21 18:56:24 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!in2.uu.net!ulowell.uml.edu!vtc.tacom.army.mil!news2.acs.oakland.edu!detroit.freenet.org!detroit.freenet.org!aa024
From: [e-mail] (Kenneth Vito Zichi)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.swap
Subject: Hams please read ....
Date: 18 Nov 1995 20:10:55 GMT
Organization: Greater Detroit Free-Net, Detroit, MI
Lines: 18
Message-ID: <48lekf$[e-mail]>
Reply-To: [e-mail] (Kenneth Vito Zichi)
NNTP-Posting-Host: detroit.freenet.org
Xref: news.epix.net rec.radio.amateur.antenna:17204 rec.radio.amateur.digital.misc:12685 rec.radio.amateur.equipment:21533 rec.radio.amateur.homebrew:11646 rec.radio.amateur.misc:94464 rec.radio.amateur.policy:31941 rec.radio.amateur.space:5780 rec.radio.cb:24521 rec.radio.noncomm:4995 rec.radio.scanner:40863 rec.radio.swap:51239


If you guys want to spam all the rec radio amateur gorups I couldn't care less
but why the H*ll are these stupid ham debate posts spilling into the
shortwave, scanner and puzzles (among others) groups.  Watch the
reply lines guys.  One spam is bad enough but when you all reply to all
the groups it is just plain RUDE.

Leave the rest of us in peace -- and if your must spam, do it via e-mail
to the original poster and again, leave the rest of us in peace.

Thanks for letting me rant.   73  //kvz


--
kv zichi,  [e-mail]
                                      (PGP Public Key Available on Request)
"Lasciate ogni speranza, voi ch'entrante"  --Dante
         Kind of appropriate for the Internet, eh?


From Unknown Tue Nov 21 18:56:24 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!xmission!charnel.ecst.csuchico.edu!waldorf.csc.calpoly.edu!isnews.csc.calpoly.edu!hertz.elee.calpoly.edu!ceustaqu
From: Cal Eustaquio <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.swap
Subject: Re: Hams please read ....
Date: Tue, 21 Nov 1995 07:49:12 -0800
Organization: Cal Poly, San Luis Obispo
Lines: 13
Message-ID: <[e-mail]>
References: <48lekf$[e-mail]> <48rbap$[e-mail]>
NNTP-Posting-Host: hertz.elee.calpoly.edu
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
NNTP-Posting-User: ceustaqu
In-Reply-To: <48rbap$[e-mail]>
Xref: news.epix.net rec.radio.amateur.antenna:17240 rec.radio.amateur.digital.misc:12714 rec.radio.amateur.equipment:21584 rec.radio.amateur.homebrew:11671 rec.radio.amateur.misc:94545 rec.radio.amateur.policy:31964 rec.radio.amateur.space:5792 rec.radio.cb:24562 rec.radio.noncomm:4997 rec.radio.scanner:40938 rec.radio.swap:51380

Dan:
One meaning may be for "Society for the Presevation of Amplitude
Modulation." Otherwise, its a generic term for a meat product that was
invented during WW2 that is still put out in the market by Hormel (I think).


On 21 Nov 1995, Daniel Calzaretta wrote:

> I'm new to this.  What does "spam" mean?  Is it Italian or Latin for
> something?
>
>
>


From Unknown Tue Nov 21 18:56:25 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!news.kreonet.re.kr!news.dacom.co.kr!news.uoregon.edu!elvis.delphi.com!imci2!newsfeed.internetmci.com!in2.uu.net!hearst.acc.Virginia.EDU!pen.k12.va.us!clowery
From: [e-mail] (Charles D. Lowery)
Subject: Help Butternut HF6V
Message-ID: <[e-mail]>
Date: Thu, 16 Nov 1995 21:56:16 GMT
Organization: Virginia's Public Education Network
Lines: 6

A friend bought a Butternut HF6V antenna at a hamfest that was
missing the 75 ohm matching section from the feedline
connection.  Any one care to help with the length of the RG-11
so we can get him on the air the SWR is horrible now.
Thanks Chuck AB4YR



From Unknown Tue Nov 21 18:56:26 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!news.eas.asu.edu!noao!ncar!ra.cgd.ucar.edu!tomas
From: [e-mail] (Bob Tomas)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Butternut HF6V
Date: 17 Nov 1995 17:18:29 GMT
Organization: Climate and Global Dynamics Division/NCAR, Boulder, CO
Lines: 28
Message-ID: <48ig55$[e-mail]>
References: <[e-mail]> <48iaak$[e-mail]>
NNTP-Posting-Host: ra.cgd.ucar.edu

Charles D. Lowery ([e-mail]) wrote:
: A friend bought a Butternut HF6V antenna at a hamfest that was
: missing the 75 ohm matching section from the feedline
: connection.  Any one care to help with the length of the RG-11
: so we can get him on the air the SWR is horrible now.
: Thanks Chuck AB4YR

Chuck,

I just did this a month or so ago.

You want to use 0.25 wavelength of coax at 14.2 (or so) MHz.

You can calculate the length using:

        Length(feet) = 246V
                       ----
                        f

where:
        V is the velocity factor of the coax
        f is the frequency in MHz


If you do not know the velocity factor of the coax, I can provide you
with a guess based upon the dielectric material.

bob


From Unknown Tue Nov 21 18:56:27 1995
Path: news.epix.net!plum.epix.net!gmfoster
From: Garry Foster <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Butternut HF6V
Date: Mon, 20 Nov 1995 14:26:27 -0500
Organization: epix.net
Lines: 15
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: plum.epix.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <[e-mail]>

Its a quater wavelength at 20 meters. Also it is only designed to help at
on the 20 meter band so don't expect to much. Foer low lower I have used
75 ohm tv cable.
                                                Garry WB0NNO

On Thu, 16 Nov 1995, Charles D. Lowery wrote:

> A friend bought a Butternut HF6V antenna at a hamfest that was
> missing the 75 ohm matching section from the feedline
> connection.  Any one care to help with the length of the RG-11
> so we can get him on the air the SWR is horrible now.
> Thanks Chuck AB4YR
>
>
>


From Unknown Tue Nov 21 18:56:28 1995
Path: news.epix.net!mango.epix.net!gmfoster
From: Garry Foster <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Butternut HF6V
Date: Mon, 20 Nov 1995 15:56:50 -0500
Organization: epix.net
Lines: 21
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: mango.epix.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <[e-mail]>



On Mon, 20 Nov 1995, Garry Foster wrote:

;> Its a quater wavelength at 20 meters. Also it is only designed to help at
;> on the 20 meter band so don't expect to much. Foer low lower I have used
                                        ------- For low power-----
;> 75 ohm tv cable.>                                            Garry WB0NNO

'> On Thu, 16 Nov 1995, Charles D. Lowery wrote:
'>
'> > A friend bought a Butternut HF6V antenna at a hamfest that was
; > missing the 75 ohm matching section from the feedline
;> > connection.  Any one care to help with the length of the RG-11
;> > so we can get him on the air the SWR is horrible now.
;> > Thanks Chuck AB4YR
;> >
;> >
;> >
;>
;>


From Unknown Tue Nov 21 18:56:29 1995
Path: news.epix.net!news.sprintlink.net!sundog.tiac.net!news.kei.com!newsfeed.internetmci.com!newsfeed.direct.ca!usenet
From: [e-mail] (John Puffer)
Newsgroups: rec.radio.amateur.antenna
Subject: Help, Looking for Video Earth Receiving dish/unit (construction of)
Date: 20 Nov 1995 05:20:34 GMT
Organization: Internet Direct Inc.
Lines: 6
Message-ID: <48p372$[e-mail]>
NNTP-Posting-Host: 204.174.244.114
X-Newsreader: WinVN 0.92.5

Pretty much what the Subject says, I am looking to build or assemble a
TV/Video reciever station for my apartment.  I need the mini unit/dish that
will fit either on my patio or livingroom floor.   Any ideas??

Thanks in advance!
John


From Unknown Tue Nov 21 18:56:31 1995
Path: news.epix.net!news.sprintlink.net!news.crd.ge.com!usenet
From: [e-mail] (John A. Sutliff)
Newsgroups: rec.radio.amateur.antenna
Subject: How important is antenna height on 6m ssb
Date: Fri, 17 Nov 1995 14:52:19 GMT
Organization: GE Corp R&D Center, Schenectady NY
Lines: 9
Message-ID: <48i7ih$[e-mail]>
NNTP-Posting-Host: backscatter.crd.ge.com
X-Newsreader: Forte Free Agent 1.0.82

Before I spend time/money on a "the best" antenna setup for 6m I was
hoping to learn just what incremental gain one gets by putting a given
6m antenna (for both vertical and horizontal polarization) higher up
in the air (for mostly flat local terrain).  Any comments/help is
appreciated.


John Sutliff



From Unknown Tue Nov 21 18:56:32 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!freenet3.freenet.ufl.edu!afn17891
From: "Thomas W. Castle" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How important is antenna height on 6m ssb
Date: Sat, 18 Nov 1995 00:53:56 -0500
Lines: 43
Message-ID: <[e-mail]>
References: <48i7ih$[e-mail]>
NNTP-Posting-Host: freenet3.afn.org
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <48i7ih$[e-mail]>

On Fri, 17 Nov 1995, John A. Sutliff wrote:

> Before I spend time/money on a "the best" antenna setup for 6m I was
> hoping to learn just what incremental gain one gets by putting a given
> 6m antenna (for both vertical and horizontal polarization) higher up
> in the air (for mostly flat local terrain).  Any comments/help is
> appreciated.
> John Sutliff

Well all I can bring into the question is just some first-hand
experiences... The higher the better is what most people say.
This seems to be more noticiable on vert. than horizontal...
On 6mtrs at least 1 wave length works ok for horizontal and on a
vertical <beam or omni> 3 to 4 wave lengths above ground works...

The biggest point I have found for myself is that the higher
the antenna can possibly be: the less front end overload of
home-entertainment equiptment...  In other words: it can help keep
your neighbors from trying to kill you when 6 is open an its
Football weekend... It won't stop it, but makes it possible to
filter using a good notch type filter to clean it up more....

Heres how it worked for me.

52.525 @ 100w at 35' above ground on 4 ele vert = totally unhappy
neighbors an wife...

52.525 @ 100w at 100' above ground 4 ele vert = happy wife an
neighbors...?

The beam has 2 rotors: one the boom goes thru, to rotate it
from vertical to horizontal <Alliance rotor if I remember>
and one in the tower to rotate it <az. 360 degree>
Also I did change from RG-213 to 1/2 hardline from inside to
tower top flex loop... Did this because the hardline was given
to me and was trying to keep neighbors from adjusting my SWR
with 12 gauge shotguns!!! You see I live in the country an the
boon-docks are between me an town, there is no cable tv here...
Just a lot of good ole boys who like weekend sports...


Good luck... De Tom a.k.a. KD4QHH



From Unknown Tue Nov 21 18:56:34 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Christopher Scibelli)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: HT telescoping antenna question
Date: Thu, 16 Nov 1995 04:39:22 GMT
Organization: Netcom
Lines: 27
Message-ID: <48efah$[e-mail]>
References: <48do6r$[e-mail]>
NNTP-Posting-Host: ix-spr-ma1-11.ix.netcom.com
X-NETCOM-Date: Wed Nov 15  8:39:45 PM PST 1995
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] wrote:

>I have been wondering if purchasing a telescoping antenna to replace
>the rubber duckie antenna on HT is at all worth while?
>I realize that the convenience of the flexable antenna will be lost,
>but I am looking for portable range, expecially when traveling.
>I also wonder if anyone has experience with dual band versions of
>these antennas?  I've been told that dual band means that the
>manufacturer tells you how far to collapse the antenna for the "other
>band" .   My HT is a Yaesu FT-530, dual band 2m/70cm.

>Any recommendations would be greatly appreciated.
>                                          Thanks..  Mike (WB3LBH)

I replaced the rubber duckie on my HT with the telescoping antenna
sold by Radio Shack.  There was a huge improvement!  There are
enclosed instructions for setting the lenghth for various bands.

Chris
NU1O



----------------------
[e-mail]
[e-mail]



From Unknown Tue Nov 21 18:56:35 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!news.eas.asu.edu!news.asu.edu!aztec.asu.edu!cjpratsj
From: [e-mail] (CAMILLE J. PRAT, SJ)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: HT telescoping antenna question
Date: 18 Nov 1995 06:18:56 GMT
Organization: Arizona State University
Lines: 41
Message-ID: <48jtsg$[e-mail]>
Reply-To: [e-mail] (CAMILLE J. PRAT, SJ)
NNTP-Posting-Host: aztec.asu.edu


>[e-mail] wrote:
>
>>I have been wondering if purchasing a telescoping antenna to replace
>>the rubber duckie antenna on HT is at all worth while?
>>I realize that the convenience of the flexable antenna will be lost,
>>but I am looking for portable range, expecially when traveling.
>>I also wonder if anyone has experience with dual band versions of
>>these antennas?  I've been told that dual band means that the
>>manufacturer tells you how far to collapse the antenna for the "other
>>band" .   My HT is a Yaesu FT-530, dual band 2m/70cm.
>
>>Any recommendations would be greatly appreciated.
>>                                          Thanks..  Mike (WB3LBH)
>
>I replaced the rubber duckie on my HT with the telescoping antenna
>sold by Radio Shack.  There was a huge improvement!  There are
>enclosed instructions for setting the lenghth for various bands.
>
>Chris
>NU1O
>
>
>
>----------------------
>[e-mail]
>[e-mail]
>

Let me add my two cents' worth of experience. Almost 3 yrs ago, I got a
Smiley telescoping antenna to replace the rubber duck on my dual-band HT.
For me, the results were -- and are -- excellent.  FYI, I also added what's
called a "Tiger Tail" from Antennas West (in Utah), which helps provide
a small radial-like ground to improve the efficiency.  [Seems to me one does
not need to buy this. Just loop a flexible wire around the BNC connector and
let it dangle some 18 or 18.5 inches. Just don't touch it during TX, to avoid
skewing the signal.....]   Good luck  and 73...

--

            Camille Prat  KB7LBN  [ [e-mail] ]


From Unknown Tue Nov 21 18:56:36 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!freenet3.freenet.ufl.edu!afn17891
From: "Thomas W. Castle" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: IC-706: what's best 2m/6m mobile antenna?
Date: Sat, 18 Nov 1995 00:12:27 -0500
Lines: 24
Message-ID: <[e-mail]>
NNTP-Posting-Host: freenet3.afn.org
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <48fub5$[e-mail]>

In regards to 2m/6m antenna:

I have been using a cut down Stainless steel whip <was 102">,
that I cut down to 64" and use a stardard 3/8 x 24 mount.
It works well with my 726 Yaesu in my Suburban using a comet
tri-plexor.... 6, 2 & 70cm.  It allows me to do 6, 2 & 440 with
just 1 antenna... It doesn't work gang busters on 440 but it
will work <vswr 1.9 & up >  Real plane jane but it works...

BTW> with the simple 3/8 x 24 mount you can also substitute
any or all HF resonators. I prefer roof top mount over trunk
but do what you have to...

Also if your into pain, take any old heavy duty "CB" fiberglass
copper wound shrink tubing covered antenna; take off the shrink
tube an rewind it as a dual or tri-band antenna... I've got a working
<GOOD> dual bander so far. Haven't got the hang of the 3 bander
yet... A trip to a really good electronic parts store <hamfest>
will get you some more shrink tubing.
Good Luck
Tom
KD4QHH




From Unknown Tue Nov 21 18:56:37 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!newsfeed.internetmci.com!in2.uu.net!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Subject: Re: IC706
Date: 17 Nov 1995 16:30:43 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 10
Distribution: world
Message-ID: <48idbj$[e-mail]>
References: <47n930$a3k$[e-mail]> <483q96$[e-mail]> <48aeeh$[e-mail]> <CSLE87-1511950919040001@145.39.1.10>
NNTP-Posting-Host: vegas.ch.intel.com
Xref: news.epix.net rec.radio.amateur.antenna:17171 rec.radio.amateur.equipment:21497 rec.radio.amateur.misc:94413 uk.radio.amateur:9199

In article <CSLE87-1511950919040001@145.39.1.10>,
Karl Beckman <[e-mail]> wrote:

>The IC706 does NOT meet the FCC's technical requirements
>and is not permitted by ANRC.

I assume my friend will transmit only during emergencies,
which is legal and permitted by ANRC.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Tue Nov 21 18:56:38 1995
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!lll-winken.llnl.gov!decwrl!amd!netcomsv!uu4news.netcom.com!netcomsv!uu3news.netcom.com!ix.netcom.com!netcom.com!netcom11!faunt
From: [e-mail] (Doug Faunt N6TQS [phone])
Subject: Re: IC706
In-Reply-To: [e-mail]'s message of Sat, 18 Nov 1995 22:12:37 GMT
Message-ID: <[e-mail]>
Sender: [e-mail]
Organization: at home, in Oakland
References: <47n930$a3k$[e-mail]>
        <[e-mail]>
        <[e-mail]> <48li87$[e-mail]>
Date: Sun, 19 Nov 1995 00:30:33 GMT
Lines: 4
Xref: news.epix.net rec.radio.amateur.antenna:17213 rec.radio.amateur.equipment:21545 rec.radio.amateur.misc:94485 uk.radio.amateur:9222

I'm slightly disappointed with the specs of the IC706.  Why didn't
they include a synchronous detector for SWLing?  That'd be rather more
useful in a mobile environment than the WBFM coverage.
73, doug


From Unknown Tue Nov 21 18:56:40 1995
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.equipment,rec.radio.amateur.misc,uk.radio.amateur
Path: news.epix.net!news.sprintlink.net!holonet!colossus.holonet.net!yama.mcc.ac.uk!warwick!usenet.eel.ufl.edu!spool.mu.edu!howland.reston.ans.net!swrinde!cssun.mathcs.emory.edu!wa4mei!ke4zv!gary
From: [e-mail] (Gary Coffman)
Subject: Re: IC706
Message-ID: <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
Organization: Destructive Testing Systems
References: <47n930$a3k$[e-mail]> <[e-mail]> <[e-mail]> <48li87$[e-mail]>
Date: Sun, 19 Nov 1995 08:20:17 GMT
Lines: 93
Xref: news.epix.net rec.radio.amateur.antenna:17214 rec.radio.amateur.equipment:21551 rec.radio.amateur.misc:94494 uk.radio.amateur:9224

In article <48li87$[e-mail]> [e-mail] (Manfred Lange) writes:
>[e-mail] (Gary Coffman) wrote:
>> On HF, though, it's a dream. I love the 1 Hz tuning, and the ability
>> to slow the tuning rate to 1/4 normal for digital. Tuning steps are
>> selectable at 1 Hz, 10 Hz, 1 kHz, and 1 MHz. I wish they hadn't skipped
>> 100 Hz, that would be useful for rapid band scans. 1 kHz is too coarse
>> for anything other than rapidly tuning to a selected band segment and
>> then shifting back to 10 Hz or 1 Hz. (Another firmware change.)
>
>Hi Gary,
>
>100-Hz-steps are possible, no problem. If you select the
>10-Hz-Function and press the "TS"-Button for about 2 Sec., the rig
>will jump into the 100-Hz-mode.

Actually, that changes you between 1 Hz and 10 Hz tuning steps. However,
there is a way to get 100 Hz (and several other) step sizes. The fine manual
explains it on page 17 as I discovered on rereading it. Just push TS until
the marker is over the kHz digit, hold it for 2 seconds, and you're in a
menu that lets you select 0.1, 1, 5, 9, 10, 12.5, 15, 20, or 100 kHz tuning
steps.  Whew! They didn't leave out a thing.

>>For those who like to scan VHF Hi-band, we've discovered a mod that
>>restores sensitivity, but at the cost of reduced sensitivity below
>>120 MHz.
>
>Could you post this mod here or via E-Mail?

This is the "yellow wire" mod, but one of my correspondents has
found a better way that actually allows the filter to switch at
the corner frequency (apparently around 129 MHz) as you tune. Now
PROCEED AT YOUR OWN RISK, there are no guarantees you won't trash
your radio, this is reverse engineering with no schematics, Icom
doesn't warrantee this mod, etc, but here's the mod anyway. :-)

Remove the radio top and bottom covers according to the manual.
Remove the speaker. Now with the radio facing you and right side
up, you'll see a single connector with discrete wires at the rear
of the control board. The fourth wire from your left should be a
yellow wire (caution, the 5th and 6th wires on the other end of
the connector are yellow too, don't get confused). Disconnect this
wire from the connector. This will enable the 2 meter pass filter
outside the 2 meter band, and will restore sensitivity between about
130 MHz and about 165 MHz (above and below that range, sensitivity
still stinks, especially above 165 MHz). Before this mod, a low pass
filter with a corner frequency around 129 MHz was in the circuit all
the time except when you were actually tuning inside the 2 meter band,
and that killed high band sensitivity completely. Before removing the
yellow wire, sensitivity at 155 MHz was 30 uV for an S1 indication,
after the yellow wire is removed, sensitivity increases so that only
0.5 uV is required for a S1 reading. At 165 MHz after the mod, sensitivity
is 3 uV for an S1 reading, before the mod, a very large signal (more than
I wanted to feed into the radio) was required for an indication.

Disconnecting the yellow wire has the unfortunate side effect of
reducing sensitivity between 60 and 129 MHz since the radio never
switches from the 2m bandpass filter to the low pass filter. Signals
below 60 MHz don't go through either filter and are unaffected by
the mod. Now here's how to get the low pass filter back when tuning
below 129 MHz. On the bottom board, right behind the MENU button,
there are 5 SMD transistors. These transistors apparently switch the
VCOs for the various band segments. The one in the middle of the
5 apparently switches the 60-129 MHz VCO. The single pin (one
side of the SMD transistor has 2 pins the other only 1) switches
to 5 volts when this VCO is active, and is low otherwise. This
is exactly what we need to feed the yellow wire. There's a board
trace coming from this pin over to a feedthru hole near J8. Connect
the yellow wire you disconnected earlier here.

The filter should now toggle between low pass and 2m bandpass
as you tune below and above 129 MHz, and you should have good
sensitivity both above and below this frequency (at least up
through 165 MHz).

Remember, CAUTION WARNING and all that trash. This is tiny SMD
stuff. If you trash your radio, you're on your own. Thanks go
to our correspondent from Finland, whose call I do not know,
who discovered this latest mod, and to WB6JDI for relaying it
to me.

A final PS to all you mod freaks. There may be *a better way*
than this mod to restore high band sensitivity. If you're a
worry wart, or unsure of your skills working with tiny stuff,
wait for the schematics and board layouts to come out on the
radio. Icom says January. Then we may find a better way. If
you're brave of heart, then happy mods to you.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | emory!kd4nc!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | [e-mail]
Lawrenceville, GA 30244     |                     |


From Unknown Tue Nov 21 18:56:41 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!usenet.kornet.nm.kr!agate!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (W. Dennis Zeares )
Newsgroups: rec.radio.amateur.antenna
Subject: Indoor Ant. ideas
Date: 17 Nov 1995 23:08:25 GMT
Organization: Netcom
Lines: 12
Message-ID: <48j4l9$[e-mail]>
NNTP-Posting-Host: ix-dfw15-17.ix.netcom.com
X-NETCOM-Date: Fri Nov 17  3:08:25 PM PST 1995

I live in a second floor apartment and I can not put up an ant.
outside. I also am running only 5 watts. Presently I have a 20 M (32
feed) dipole in my living room. It is in the shape of a diamond with
the ends being about four feet apart on the far wall. I am using 50 ohm
coax. By using a diamond, the wire only touches the walls at 5 points
and the ant. is away from the walls.

Any other ideas?  Should I change to 300/450 ohm line? What about and
end fed long wire out of the tunner up and around the room in the same
shape?

What antennas have others tried with success using low power.


From Unknown Tue Nov 21 18:56:42 1995
Path: news.epix.net!news.sprintlink.net!news.texas.net!news.kei.com!newsfeed.internetmci.com!solaris.cc.vt.edu!newsrelay.netins.net!news.netins.net!usenet
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Indoor Ant. ideas
Date: 19 Nov 1995 03:37:30 GMT
Organization: INS Information Services, Des Moines, IA USA
Lines: 33
Message-ID: <[e-mail]>
References: <48j4l9$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: ins.netins.net

In article <48j4l9$[e-mail]>, [e-mail] (W. Dennis Zeares ) writes:
>I live in a second floor apartment and I can not put up an ant.
>outside. I also am running only 5 watts. Presently I have a 20 M (32
>feed) dipole in my living room. It is in the shape of a diamond with
>the ends being about four feet apart on the far wall. I am using 50 ohm
>coax. By using a diamond, the wire only touches the walls at 5 points
>and the ant. is away from the walls.
>
>Any other ideas?  Should I change to 300/450 ohm line? What about and
>end fed long wire out of the tunner up and around the room in the same
>shape?
>
>What antennas have others tried with success using low power.
Let me tell you what I have done in the past, in your situation.
First of all I am also a Qrp op. I have used my old Argonaut 509 with 5 watts and a
random length of fine gauge wire, up only about 20 feet and had good results in
actual operating. One big question, can you get any of the antenna outside? One of the
reasons I had fine, like 28 gauge wire, is so I could sneak it out a window and into a
nearby tree, again only up 20 or so feet. No one could really see it and it worked well,
end fed with a cheap $29 tuner. I know of some hams who, living up on the second or higher
floors, have a length of fine wire with a weight on the end. They feed the wire out and
over the window sill, balcony,what-have-you at night and actually have good results. Again
the question: can you get anything out the window and outside?
You can feed full size dipoles indoors and use tuners to feed them on several bands. You
can use coax or balanced type line. A twenty meter dipole and a tuner will work aceptably
on 40 meters. I had a friend in college who fed the screen in his dorm window and had a
blast. I knew a guy who had a dipole, (not sold now but once available comercially) made
of two slinkys fed in the middle. Try a helically wound dipole, same idea.
For theory or practical building info I would go to about 2 years of back issues of QST
and maybe CQ magazines and get ARRL antenna book (a must). Lots of hams have been in
you situation, myself included, and done very well. Even QRP.
Good luck my friend
73 de WB0FDJ


From Unknown Tue Nov 21 18:56:43 1995
Path: news.epix.net!news.sprintlink.net!nwnews.wa.com!news1.halcyon.com!coho!ki7zd
From: [e-mail] (Randy Seacat)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Indoor Ant. ideas
Date: 19 Nov 1995 10:43:10 GMT
Organization: Northwest Nexus Inc.
Lines: 10
Message-ID: <48n1nu$[e-mail]>
References: <48j4l9$[e-mail]> <[e-mail]>
NNTP-Posting-Host: coho.halcyon.com


Another option would be a loop on a wall!

[]_radio

--
/-/-/  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  | Amateur Radio Station                       Inet: [e-mail]
  | KI7ZD
  | WWA  CN87  73's    _._ .. __... __.. _..   "If RST > 519, Reduce Power!"


From Unknown Tue Nov 21 18:56:44 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!oleane!in2p3.fr!swidir.switch.ch!swsbe6.switch.ch!scsing.switch.ch!news.belwue.de!news.informatik.uni-stuttgart.de!gelleric
From: [e-mail] (Wolfgang Gellerich)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Indoor Ant. ideas
Date: 20 Nov 1995 12:26:28 GMT
Organization: Informatik, Uni Stuttgart, Germany
Lines: 3
Sender: gelleric@kafka (Wolfgang Gellerich)
Distribution: world
Message-ID: <48ps5k$[e-mail]>
References: <48j4l9$[e-mail]>
NNTP-Posting-Host: kafka.informatik.uni-stuttgart.de

You should consider building a magnetic loop !

73, Wolfgang DJ3TZ


From Unknown Tue Nov 21 18:56:45 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!sundog.tiac.net!news.kei.com!newsfeed.internetmci.com!news.twave.net!not-for-mail
From: [e-mail] (Douglas E Lail)
Subject: info on antenna design
Message-ID: <b137cb$[e-mail]>
Date: Sun, 19 Nov 1995 03:21:07 GMT
Reply-To: [e-mail]
X-Newsreader: Forte Free Agent 1.0.82
Lines: 10

I need any information of the Garant wire antenna made inThunder
Bay,Canada. i need to know if anyone has had any success with this
product.(swr, ect.)

James Lail
WB4OVO

The Overlord
<[e-mail]>




From Unknown Tue Nov 21 18:56:46 1995
From: [e-mail] (Doug Reed)
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!rosevax!hamlink!fredmail
Newsgroups: rec.radio.amateur.antenna
Subject: Is Old hardline any good?
Message-ID: <[e-mail]>
Date: Sat, 18 Nov 1995 06:25:07 -0100
X-FTN-To: All
Lines: 16

I have access to some 20+ year old 7/8" 50 ohm hardline.  It is so old
it is bare copper (painted) outside, not plastic covered like all newer
hardline.  A radio service tech whose opinion I value said not to bother
using it because the bare copper tended to cause intermittant and
corroded connections when mounted on a tower.  The bad connections
generate intermod with local signals.

Has anyone else had similar experiance using OLD copper hardline?
Thank's for the info.
73's.
Doug Reed, N0NAS            email: [e-mail]
St Paul, Minnesota

 * SLMR 2.1a * On a clear disk you can seek forever




From Unknown Tue Nov 21 18:56:46 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!news.tele.fi!news.inet.fi!usenet
From: [e-mail] (Osmo Vuorio)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Is Old hardline any good?
Date: 18 Nov 1995 18:38:12 GMT
Organization: Telecom Finland, Engineering
Lines: 15
Message-ID: <48l96k$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: vuorios1.dial.tele.fi
X-Newsreader: WinVN 0.92.6+

In article <[e-mail]>, [e-mail] (Doug Reed) says:
>

>Has anyone else had similar experiance using OLD copper hardline?
>Thank's for the info.
>73's.
>Doug Reed, N0NAS            email: [e-mail]
>St Paul, Minnesota

You see, these things work as they are used. About 30 years ago
the Cu/CuO was used in the ring modulators in the FDM equipment.
Of course, there are many other nonlinear metal connections too.

Osmo, OH2EU



From Unknown Tue Nov 21 18:56:48 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!gatech!newsfeed.internetmci.com!howland.reston.ans.net!news.cac.psu.edu!usenet
From: John Passaneau <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile Whips as Short Dipoles??
Date: 20 Nov 1995 14:07:44 GMT
Organization: Penn State University
Lines: 43
Message-ID: <48q23g$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: thing-two.phys.psu.edu
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

"George J. Molnar" <[e-mail]> wrote:
>Has anyone had success using mobile whips as limited-space antennas
>on 80 meters? I know the bandwidth would be VERY limited, but that's
>okay -- would just like to get out on a small part of the band -- at
>all! My initial tries (2 whips fed with coax in the attic) work about
>as well as a dummy load. I must be missing something, eh?
>
>Any input is appreciated.
>
>73,
>
>--
>George J. Molnar
>Highlands Ranch, Colorado
>Internet: [e-mail]
>Packet: KF2T@N0QCU.#NECO.CO.USA.NOAM
>http://www.interealm.com/p/gmolnar/index.html

Hi George

I made a dual band dipole out of 4 "hamsticks", two on 80 and two on 40 at 90 DEG.
to each other. I seems to work for me. I made a home-brew current balun for the
feed. I modeled the antenna using EZNEC on 40 meters and compared it to a full size
dipole at the same hight. As I am using them at a very low hight most of the signal
goes straght up in both antennas, but the full size had a slightly wider blob with
slightly more radation at lower angles. Gain for the full size (at 90 DEG.) was
7.22 dbi and for the shortened antenna, 4.29 dbi. That makes the shortend antenna
3 dbi down from the full size antenna. This is a better than real life number. With
shortened antennas, the radation resistance is very low, (about 5 ohmns) and any
extra loss in connections to the whip etc. can make a large differance in the
proformance of the antenna. So to get the best you can out of an antenna like this,
you need to make all connections as low impedance as possible. I used 1" wide copper
strap to connect my whips and the balun was made with #12 wire and I used good
solder connectons for every thing. I also made sure to use high grade insolators for
lowest loss. The bigest thing I could do to improve the proformance would be to use
something like Texas Bug Cachers instead of the "hamsticks" as they are not the best
moble antennas on the market. Not to say that they are not the best of there type of
moble antennas though.
Hope this helps you.
John Passaneau, WB8EIY, State College Pa.





From Unknown Tue Nov 21 18:56:49 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!paladin.american.edu!gatech2!newsfeed.pitt.edu!uunet!in2.uu.net!ulowell.uml.edu!vtc.tacom.army.mil!wx8l
From: [e-mail] (Sean McCarthy)
Newsgroups: rec.radio.amateur.antenna
Subject: Mosley PRO-67B - info wanted
Date: 18 Nov 1995 03:45:23 GMT
Organization: Vetronics Technology Center, US Army TACOM, Warren, Michigan USA
Lines: 10
Message-ID: <48jksj$[e-mail]>
NNTP-Posting-Host: wx8l.tacom.army.mil
X-Newsreader: News Xpress Version 1.0 Beta #4


Hello all,

Any Mosley PRO-67B users out here want to comment on how you like it?

I currently have a TH7DX, and was looking for 2L on 40M to stack 10' above
it at 85 foot, but am now thinking the 67B may be a better solution.

Thanks,
Sean


From Unknown Tue Nov 21 18:56:50 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!sol.ctr.columbia.edu!news.oberlin.edu!ocvaxa.cc.oberlin.edu!PRUTH
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Multiband inverted vee questions
Date: 20 Nov 1995 16:30:34 GMT
Organization: Oberlin College, Oberlin, Ohio
Lines: 15
Message-ID: <48qafa$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: alpha.cc.oberlin.edu

I am considering putting up either a 105' trap dipole for
5-band coverage (Spi-Ro) or an 82' parallel dipole (Alpha-Delta
DX-CC) which is also 5-band.  Which of these two would give
better performance, particularly with regard to having WARC
band tunability?
  Regarding inverted vees generally, what angle would be
optimal to produce an omnidirectional pattern?  The dipole
I'm using now has a shallow angle, with peak at 35' and ends
at 15', using a 102' flattopped G5RV style antenna.  I can
hear Europe and California well even though the ends are
pointing due east and west from my northern Ohio location.
  Whichever antenna I eventually get, I'm hoping to have
less problems with feedline radiation and RFI to the neighbors
than with the G5RV.  Wish me luck.  --Bill KB8USZ
[e-mail]


From Unknown Tue Nov 21 18:56:50 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news.nic.surfnet.nl!news.sara.nl!news.pi.net!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: multiband mobile
Date: Sun, 19 Nov 95 22:22:42 PDT
Organization: Planet Internet
Lines: 14
Message-ID: <[e-mail]>
NNTP-Posting-Host: maa19.pi.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
X-Newsreader: NEWTNews & Chameleon -- TCP/IP for MS Windows from NetManage


Cause off lack off an antenna at my home QTH I have some sucsesfull
expirence with some modified CB antenna's for mobile work.
However band changing involkes the problem off changing the
antennatip which means finding a parking lot.
So I would like to modify a CB antenna to a multiband one.
this causes some mechanical problems as a coil might be to heavy.

Any suggestions please.

Pascal de PA3FKM





From Unknown Tue Nov 21 18:56:52 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!in2.uu.net!gti.gti.net!gti.gti.net!not-for-mail
From: [e-mail] (John Monaco)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: NEED ANTENNA ADVICE PLEASE!
Date: 15 Nov 1995 23:57:10 -0500
Organization: GTI GlobalNet - [phone]
Lines: 17
Message-ID: <48egb6$[e-mail]>
References: <48dlkl$[e-mail]>
NNTP-Posting-Host: gti.gti.net
X-Newsreader: TIN [version 1.2 PL2]

Daniel Calzaretta ([e-mail]) wrote:
: >
: > --------------------------------------------------------------------
: > I am looking for an 80-6 meter vertical for either roof or ground
: > mount that doesn't need an extensive radial system (I have a small
: > yard).  Any advice?  I want to get back on the air ASAP!


Two possibilities that come to mind are the Butternut HF9VX with CPK
counterpoise, and the GAP Challenger DX.  If I am not mistaken, both
of these antennas offer 80 through 6 meter coverage, though I do not
have personal experience with either of them.

I hope this helps.

--
John Monaco  <[e-mail]>


From Unknown Tue Nov 21 18:56:53 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!bcm.tmc.edu!news.tamu.edu!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Phased Antenna design
Date: 16 Nov 1995 02:48:50 GMT
Organization: Texas A&M University, College Station, TX
Lines: 34
Message-ID: <48e8qi$[e-mail]>
References: <48dlg6$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: 128.194.44.211
X-Newsreader: IBM NewsReader/2 v1.2

In <48dlg6$[e-mail]>, [e-mail] (BBS Login) writes:
>
>What's the best way for phased antenna design?
>
>Is this being posted properly?
>
>73's
>J.W.
>

First the fun part!  This is like Alice asking the Caterpillar, "Which path
should I take?"  Recall the answer, "Well, where are you going?"  Alice,
"I really don't know!"  Caterpillar, "Well, then it really doesn't make any
difference which path you take, now does it!"

Now the serious part.

For you or anyone else to know the answer to this question, requires that
you first postulate what kind of antenna is involved!  For example, is this
antenna to be a set of multiple elements of a horizontally polarized array?
Is it to be a number of elements in vertical mode?  Is it circular?

Does the ground matter because it is relatively close to the antenna, as far
as, say, being within a wavelength or so from ground?

Actually, the vertical vs. horizontal bit may not matter at all if the antenna
is to be out in free space, or something like that!  But, all kidding aside,
tell us, the curious, what kind of antenna you are thinking about and what
you want to do with it.

Then, maybe, real help may appear as if by magic!

Mike @ W5WQN as a guset at leviathan.tamu.edu



From Unknown Tue Nov 21 18:56:54 1995
Path: news.epix.net!news.sprintlink.net!news1.channel1.com!wizard.pn.com!news.zeitgeist.net!news.pixi.com!vine
From: [e-mail] (BBS Login)
Newsgroups: rec.radio.amateur.antenna
Subject: Phasing Antennas
Date: 18 Nov 1995 07:12:34 GMT
Organization: INTERACT! - Hawaii's FUN Online Service Summary:  Keywords:
Lines: 12
Message-ID: <48k112$[e-mail]>
NNTP-Posting-Host: oahu.ohana.com
X-Newsreader: TIN [version 1.2 PL2]


Does any one know how to provide 90 degree phasing between two antennas
without using a length of coax for a particular frequency?
Any broadband 1-30MHz phase power splitter / combiners?

Any circuit to vary phase, DSP?

How long does this posting last?  I finally saw my other posting only just
for a few day(s).

73's
J.W.


From Unknown Tue Nov 21 18:56:55 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Phasing Antennas
Date: 18 Nov 1995 14:47:50 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 25
Sender: [e-mail]
Message-ID: <48ld96$[e-mail]>
References: <48k112$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <48k112$[e-mail]>, [e-mail] (BBS Login) writes:

>
>Does any one know how to provide 90 degree phasing between two antennas
>without using a length of coax for a particular frequency?
>Any broadband 1-30MHz phase power splitter / combiners?
>
>Any circuit to vary phase, DSP?
>
>How long does this posting last?  I finally saw my other posting only
just
>for a few day(s).
>
>73's
>J.W.

There are ways to do this JW, but the choice varies with the application.
I use a technique that may be similar to what you need in my receiving
arrays. The cover several octaves of frequency with no major change in
directivity, and no adjustment.

Usually the designer doesn't want the phase shift to remain constant. What
is the exact application??

73 Tom


From Unknown Tue Nov 21 18:56:56 1995
Path: news.epix.net!news.sprintlink.net!news.scott.net!acara.snsnet.net!HiWAAY.net!imci2!newsfeed.internetmci.com!info.ucla.edu!psgrain!nntp.teleport.com!usenet
From: [e-mail] (Roy Lewallen)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Phasing Antennas
Date: 20 Nov 1995 05:17:19 GMT
Organization: ELNEC/EZNEC Software
Lines: 35
Message-ID: <48p30v$[e-mail]>
References: <48k112$[e-mail]>
NNTP-Posting-Host: ip-pdx01-04.teleport.com
X-Newsreader: SPRY News 3.03 (SPRY, Inc.)

>   [e-mail] (BBS Login) writes:
>
>  Does any one know how to provide 90 degree phasing between two antennas
>  without using a length of coax for a particular frequency?
>  Any broadband 1-30MHz phase power splitter / combiners?
>
>  Any circuit to vary phase, DSP?
>
>  How long does this posting last?  I finally saw my other posting only just
>  for a few day(s).
>
>  73's
>  J.W.
>

Quite a number of years ago, I wrote a section for the ARRL Antenna Book on
phased arrays. Included was a few paragraphs titled "The Magic Bullet". This
describes a circuit which would give 90 degrees phasing between two elements,
independent of element impedance. It wasn't even required to be broadbanded.
Anyone who knows of such a circuit was (and is -- it's still in the Antenna
Book) asked to contact either me or the ARRL. I haven't heard of any responses.
(There are and have been systems sold which purport to be able to do this.
They don't.)

Unless you can keep the element impedances constant with frequency, I don't
believe there's a circuit which will deliver any phase shift other than 0 or
180 degrees to the elements over a wide frequency range. If you'll settle for
a design which works with the specific impedances of the elements at one
frequency and phasing condition, there are several ways, one of which is
described in Chapter 8 of the ARRL Antenna Book. Alternatively, you can make
the elements very lossy so their impedances don't appreciably change with
frequency.

Roy Lewallen, W7EL



From Unknown Tue Nov 21 18:56:57 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!bcm.tmc.edu!news.tamu.edu!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: portable phone?
Date: 16 Nov 1995 08:29:07 GMT
Organization: Texas A&M University, College Station, TX
Lines: 33
Message-ID: <48esoj$[e-mail]>
References: <48efb5$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: 128.194.44.211
X-Newsreader: IBM NewsReader/2 v1.2

In <48efb5$[e-mail]>, [e-mail] writes:
>I'm aware that this may not be the correct group to post this to,but I
>can't find anything closer.
>I'd like to extend the usable range of my portable phone,and was
>wondering if there is a simple hookup or antenna design that I could
>put on the outside of the house to do so.I often take the phone outside
>with me to work on the car/truck and unless I'm close,it don't work so
>good.I only want about a one hundred foot increase.Any ideas?
>       ***thanx***

The simplest way to get a shot at extra range might be to simply change the
location of the base unit!  Because radio waves don't behave exactly like a
non-technical person thinks, you may be surprised to find that moving it a few
feet or so may help you.  For example, if you carry a pager, you may have
discovered that moving it even a few inches may make it either receive or
miss pages!

That same effect works on your portable phone, sometimes, but less so than
on most pagers.

Try shifting the location of the phone.  It goes without saying, that the
obvious is usually true.  If you can get that 100 feet closer to the garage
by just moving the phone, you may have solved your problem!

The last tip is if you happen to live in a mobile home and the garage is
outside.  The metal on a mobile home acts as a shield for your phone radio
waves.  If this is the problem, and you can get the base unit where it can
out the window, adjacent to the glass, you will likely be a happy camper.

Trying to fit most of these devices with better antennae in not very practical.

Mike - W5WQN as a guest at leviathan.tamu.edu



From Unknown Tue Nov 21 18:56:58 1995
Path: news.epix.net!news.sprintlink.net!news.heurikon.com!uwvax!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (TeaForOne)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Radio Shack Antenna Rotor
Date: 21 Nov 1995 01:59:20 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 5
Sender: [e-mail]
Message-ID: <48rtc8$[e-mail]>
References: <[e-mail]>
Reply-To: [e-mail] (TeaForOne)

I have one and it does not use five wire cable, it only uses three.
If your not going to use it, how about sending it on to me since I already
have a controller  ...  ;-)

73 de KB2TMA


From Unknown Tue Nov 21 18:56:59 1995
Path: news.epix.net!news.sprintlink.net!news.onramp.net!news.tcst.com!dildog.lgc.com!news.sesqui.net!darwin.sura.net!dcc.uchile.cl!library.ucla.edu!info.ucla.edu!newsfeed.internetmci.com!in2.uu.net!elvis.delphi.com!usenet
From: DOUG GAVILANES <[e-mail]>
Newsgroups: soc.culture.venezuela,soc.culture.uruguay,soc.culture.spain,soc.culture.peru,soc.culture.mexican.american,soc.culture.latin-america,soc.culture.ecuador,soc.culture.cuba,soc.culture.colombia,soc.culture.chile,soc.culture.bolivia,soc.culture.argentina,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: RADIOAFICIOANDOS ENLAZADOS VIA INTERNET
Date: 16 Nov 1995 06:54:03 GMT
Organization: Delphi Internet Services
Lines: 14
Message-ID: <48en6b$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: slip134-69.bb.delphi.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Windows; I; 16bit)
Xref: news.epix.net soc.culture.venezuela:42985 soc.culture.uruguay:4341 soc.culture.spain:81199 soc.culture.peru:10340 soc.culture.mexican.american:7654 soc.culture.latin-america:38844 soc.culture.ecuador:3981 soc.culture.cuba:29776 soc.culture.colombia:11680 soc.culture.chile:30942 soc.culture.bolivia:9959 soc.culture.argentina:26778 rec.radio.amateur.misc:94402 rec.radio.amateur.homebrew:11614 rec.radio.amateur.equipment:21474 rec.radio.amateur.digital.misc:12652 rec.radio.amateur.antenna:17160

Saludos desde la zona W6,
             Que tal si la proxima vez usamos una repetidora de 2M o
440MHz en Los Angeles? El sistema de 1.2 GHz no tiene mucho uso aqui en
Los Angeles. Les felicito por el hecho. Acabo de comprar Internet Phone y
reconozco que hacer la conexion resulta sumamente facil. Voy a averiguar
si hay alguna repetidora mas accesible que quiere participar para otro
enlace. Hasta pronto,

73 cordiales desde Disneylandia,

Douglas Gavilanes Russo, N6XQY
[e-mail]




From Unknown Tue Nov 21 18:57:00 1995
Path: news.epix.net!news.sprintlink.net!online!wb3ffv!news.cais.net!news.structured.net!news.ism.net!usenet
From: Josh  <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: RAIbeam 2 el phased array
Date: 14 Nov 1995 18:58:54 GMT
Organization: Internet Services Montana, Inc.
Lines: 7
Message-ID: <48aote$[e-mail]>
NNTP-Posting-Host: slip10.denver.net
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.12(Macintosh; I; 68K)
X-URL: news:rec.radio.amateur.antenna

Is any body usintg a RAI beam, the new 2 el phased array?

Any personal experience with performance and construction?

Josh WX7K




From Unknown Tue Nov 21 18:57:01 1995
Path: news.epix.net!news.sprintlink.net!matlock.mindspring.com!kr4tg.mindspring.com!kr4tg
From: [e-mail] (mike del pozzo)
Newsgroups: rec.radio.amateur.antenna
Subject: Rotating Tower
Date: Mon, 20 Nov 1995 07:35:01 -0400
Organization: MindSpring Enterprises, Inc.
Lines: 8
Message-ID: <[e-mail]>
NNTP-Posting-Host: kr4tg.mindspring.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B]

Can anyone give me information on construction of & possibly manufacturers of
parts to a Rotating tower. This is a project I would like to start on Possibly
by next summer. I have alot of very large yagis and the mast is not
compattible with such a stacked array . By E-Mail or here is fine . Tnx in
advance. 73 de KR4TG, Mike :-)
                                Woodstock,GA
                                [e-mail]



From Unknown Tue Nov 21 18:57:02 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!news.suba.com!qni.com!gwatts
From: Gary Watts <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Satellite Audio?
Date: Sun, 19 Nov 1995 15:09:19 -0600
Organization: Suba Communications
Lines: 50
Message-ID: <[e-mail]>
References: <48im7f$[e-mail]> <[e-mail]>
NNTP-Posting-Host: qni.com
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <[e-mail]>

2000 is a bit HIGH for used equipment.
That price would be for NEW equipment with a descrambler
You could set up a used 6 - 10 ft dish
older receiver and lna for 200.00 - 300.00

I just went to a sat dealer who would had sold me a
old heavy disk for about 50.00 then the receiver 100
and then lnb's and acuator.
Besided receiving the Satellite swl outlets/feeds  you would also be able
to receive
Nasa Select to watch the video from the sSpace Shuttle..

One more note
the SW audio can be received with the sat video receiver
no special receiver is needed

Good luck
Gary Watts  de  N0OXV
Kansas City Mo
81 GL1100I


On Sat, 18 Nov 1995, Robert Smits wrote:

> [e-mail] (Lcdreamr) writes:
>
> >I'm interested in receiving satellite audio to recieve shortwave radio,
> >anyone know how?
> >[e-mail] Just give me the chocolate and nobody gets hurt!
>
> While some Shortwave Broadcasters have satellite feeds, you don't need to
> get a satellite system to receive shortwave radio. In fact, there are only
> a few you can access that way - Deutsche Welle, RAI, BBC, as well as the
> WRN one hour rebroadcasts of RCI, WLE, etc, while a real shortwave radio
> has hundreds of frequencies to choose from.
>
> To receive satellite audio you need a Cband satellite dish, a polar mount,
> and a satellite receiver. Then you tune some of the satellite FM
> subcarriers on the appropriate channel to receive them. It's probably
> worth on the order of $2000, while you should be able to set up a receiver
> for a couple of hundred bucks and some wire.
>
>
>
> --
> [e-mail]
>
> She never was really charming till she died.
>
>


From Unknown Tue Nov 21 18:57:03 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news1!ts1-ind-2
From: [e-mail] (Patrick Croft)
Subject: Seeking  HyGain TX7DXX
X-Nntp-Posting-Host: ts1-ind-2.iquest.net
Message-ID: <[e-mail]>
Sender: [e-mail] (News Admin)
Organization: IQuest Network Services
X-Newsreader: News Xpress Version 1.0 Beta #2.1
Date: Fri, 17 Nov 1995 00:36:23 GMT
Lines: 4

Looking for TH7DXX Tribander in good condx.  Prefer to locate something within reasonable driving range of Indianapolis, IN.
Let me know what condx, price and location.  Call, fax, or email.  Thanks to all!
                  WB9IQI     Patrick  Croft    Day Tel[phone]       Fax[phone]          email:[e-mail]



From Unknown Tue Nov 21 18:57:04 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news1!ts1-ind-2
From: [e-mail] (Patrick Croft)
Subject: SEEKING ROHN 45/55 TOWERS
X-Nntp-Posting-Host: ts1-ind-2.iquest.net
Message-ID: <[e-mail]>
Keywords: TOWERS
Sender: [e-mail] (News Admin)
Organization: IQuest Network Services
X-Newsreader: News Xpress Version 1.0 Beta #2.1
Date: Fri, 17 Nov 1995 00:45:54 GMT
Lines: 11

I'm hunting sections of Rohn 45 and/or 55 towers, and the various hardware accessories that go with them.  Additionally,
I'd be interested in buying a Dick Webber (RTS)  rotating tower system for Rohn 25,45, or 55.

With all the swap nets, corners of garages holding 'spares', and plans that get changed, keep this WTB in mind
when you hear someone looking to sell!

Thanks!                       WB9IQI  -  Patrick Croft
                                  Daytime Tel:[phone]
                                          Fax:[phone]
                                        email:[e-mail]



From Unknown Tue Nov 21 18:57:05 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!ulowell.uml.edu!aspen.uml.edu!vx701205
From: [e-mail] (SOME CALL ME THE BIG BOPPER)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Smith Charting Programme
Date: 17 Nov 95 14:12:10 -0500
Organization: University of Massachusetts Lowell
Lines: 12
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: aspen.uml.edu

In article <[e-mail]>, [e-mail] (Peter Ireson) writes:
> I'm trying to track down a Smith Charting programme for a friend and
> not having much luck. Does one exist?
>
> If so where can I get it and how much does it cost (if not shareware).

This is my first time here, and I am looking for software (of a more
general type ) too.  But, just in case it is appropriate, I note that
in the MATLAB program (put out by Mathworks, Natick, Mass.), which
has its own Usenet news group, I believe I have seen reference to
Smith chart plotting.



From Unknown Tue Nov 21 18:57:06 1995
Path: news.epix.net!news.sprintlink.net!castle.nando.net!news
From: [e-mail] (Doug Hall)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Smith Charting Programme
Date: Sat, 18 Nov 1995 03:47:49 GMT
Organization: JPS Communications, Inc.
Lines: 23
Message-ID: <48jl18$[e-mail]>
References: <[e-mail]> <[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: vyger1516.nando.net
X-Newsreader: Forte Agent .99a.107

[e-mail] (SOME CALL ME THE BIG BOPPER) wrote:

>In article <[e-mail]>, [e-mail] (Peter Ireson) writes:
>> I'm trying to track down a Smith Charting programme for a friend and
>> not having much luck. Does one exist?
>>
>> If so where can I get it and how much does it cost (if not shareware).
>
>This is my first time here, and I am looking for software (of a more
>general type ) too.  But, just in case it is appropriate, I note that
>in the MATLAB program (put out by Mathworks, Natick, Mass.), which
>has its own Usenet news group, I believe I have seen reference to
>Smith chart plotting.
>

MicroSmith is available from the ARRL, and is reasonably priced at
around $40 or so. It does an excellent job.

73,
Doug Hall, KF4KL
http://emporium.turnpike.net/J/JPS/jps.html




From Unknown Tue Nov 21 18:57:06 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!utnut!utcsri!newsflash.concordia.ca!sunqbc.risq.net!news.riq.qc.ca!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: static problem with my J-pole.
Date: Sun, 19 Nov 95 21:03:27 PDT
Organization: Reseau Internet Quebec
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I have a problem with my J-pole antenna.

I ge this static sound that comes every 10 second or so and that goes away
after 2-3 seconds.  I've tried puting a ground but nothing as changed.
I've raised the J-pole higher but not difference...

Can anybody help me?

Maxime Caron
[e-mail]
VA2MRX



From Unknown Tue Nov 21 18:57:07 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!EU.net!Germany.EU.net!news.dfn.de!server2.rz.uni-leipzig.de!news.uni-jena.de!news.tu-ilmenau.de!prakinf2.PrakInf.TU-Ilmenau.DE!news.uni-stuttgart.de!moritz
From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: static problem with my J-pole.
Date: 21 Nov 1995 15:50:26 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 13
Message-ID: <48ssg2$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de

>I ge this static sound that comes every 10 second or so and that goes away
>after 2-3 seconds.

Hi Maxime,

The noise is caused by parasitic elements, described in antenna books.
Unfortionately they can gradually spread down the antenna cable and will
eventually cause receiver failure.

73, Moritz DL5UH





From Unknown Tue Nov 21 18:57:08 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.inc.net!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!torn!nott!cunews!cheungw
From: [e-mail] (Wendy Wing Chi Cheung)
Subject: TEST, Do not read.
X-Nntp-Posting-Host: solomon.sce.carleton.ca
Message-ID: <[e-mail]>
Sender: [e-mail] (News Administrator)
Organization: Systems & Computer Engineering Department, Carleton University, Ottawa, Canada
Date: Sun, 19 Nov 1995 01:01:16 GMT
Lines: 6

Just a test.
--
=============================================================================
Wendy W.C. Cheung                                     [e-mail]
Systems Engineering (Communications)                  Tel. [phone]
Carleton University                                   Fax. [phone]


From Unknown Tue Nov 21 18:57:09 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: The 160 mtr. Lazy-H
Date: 18 Nov 1995 14:04:52 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 19
Sender: [e-mail]
Message-ID: <48laok$[e-mail]>
References: <48fug7$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <48fug7$[e-mail]>, pete brunelli <[e-mail]>
writes:

>>hello folks , Whatdaya think?
>> 2 dipoles stacked, @ 50 ft spacing
>*snip*
>> No need for switching or turning
>> very high gain on 80 , and higher on 40
>
>Broadside Gain?

Very high gain? With 50 foot broadside spacing on 80 and 40? I think not!


>No Tuning.... as in "no transmatch"?

He said no tuRning, not no tuNing.

73 Tom


From Unknown Tue Nov 21 18:57:10 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (--- )
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Date: 16 Nov 1995 09:19:48 GMT
Organization: Netcom
Lines: 1
Message-ID: <48evnk$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <485m5d$[e-mail]>
NNTP-Posting-Host: ix-lv7-15.ix.netcom.com
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From Unknown Tue Nov 21 18:57:11 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsjunkie.ans.net!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!newsfeed.internetmci.com!news1.i1.net!news1.inlink.com!usenet
From: [e-mail] (Gary V. Deutschmann, Sr.)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Date: Thu, 16 Nov 1995 16:21:07 GMT
Organization: Inlink
Lines: 4
Message-ID: <48fo6h$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]> <485m5d$[e-mail]> <485q5e$[e-mail]>
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Xref: news.epix.net rec.puzzles:52160 rec.puzzles.crosswords:4616 rec.pyrotechnics:37711 rec.radio.amateur.antenna:17169 rec.radio.amateur.digital.misc:12659 rec.radio.amateur.equipment:21494 rec.radio.amateur.homebrew:11620 rec.radio.amateur.misc:94411 rec.radio.amateur.policy:31909 rec.radio.amateur.space:5770 rec.radio.cb:24495 rec.radio.noncomm:4989 rec.radio.scanner:40798 rec.radio.shortwave:66161 rec.radio.swap:51124 rec.roller-coaster:23225 rec.running:45418 rec.scouting:37756 rec.scuba:80500 rec.skiing.alpine:33121

If I fix a HAM & CHEESE on Jewish Rye, is it KOSHER, or must I use
Kosher Pickles to get the effect?




From Unknown Tue Nov 21 18:57:12 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!brighton.openmarket.com!decwrl!tribune.usask.ca!aa266
From: [e-mail] (Graeme Humphries)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: The idiot ham trade.
Followup-To: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Date: 18 Nov 1995 23:09:32 GMT
Organization: Saskatoon Free-Net
Lines: 1
Message-ID: <48lp3c$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825eh$[e-mail]>
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Xref: news.epix.net rec.puzzles:52193 rec.puzzles.crosswords:4624 rec.pyrotechnics:37757 rec.radio.amateur.antenna:17205 rec.radio.amateur.digital.misc:12687 rec.radio.amateur.equipment:21534 rec.radio.amateur.homebrew:11648 rec.radio.amateur.misc:94470 rec.radio.amateur.policy:31944 rec.radio.amateur.space:5781 rec.radio.cb:24524 rec.radio.noncomm:4996 rec.radio.scanner:40866 rec.radio.shortwave:66232 rec.radio.swap:51250 rec.roller-coaster:23237 rec.running:45504 rec.scouting:37799 rec.scuba:80625 rec.skiing.alpine:33269

        What about free BEEF???


From Unknown Tue Nov 21 18:57:13 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!news.emf.net!overload.lbl.gov!news.kreonet.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!in2.uu.net!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Tuner Recommendation
Date: 17 Nov 1995 16:34:43 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 11
Distribution: world
Message-ID: <48idj3$[e-mail]>
References: <48d7t2$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <48d7t2$[e-mail]>, Danny Stone NT <[e-mail]> wrote:

>Does anyone have any recommendations for a good
>commercially available antenna tuner that would
>work with this configuration?

Antenna tuners are one of the few things that are still easy to homebrew.
For half the cost of a new tuner, one can build a balanced antenna tuner.
Fair Radio Sales has all the parts needed and I'm building one.

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Tue Nov 21 18:57:14 1995
Path: news.epix.net!usenet
From: [e-mail] (Scott Walker)
Newsgroups: rec.radio.amateur.antenna
Subject: Wanted: Cushcraft R57K
Date: 19 Nov 1995 17:10:24 GMT
Organization: epix.net
Lines: 7
Message-ID: <48noe0$[e-mail]>
NNTP-Posting-Host: lwbyppp125.epix.net
Mime-Version: 1.0
X-Newsreader: WinVN 0.93.10

I am looking for the kit to upgrade an R5 to an R7.  Cushcraft no longer
makes it, and I didn't even know about it when they did!  Any info on
sources appreciated.

Scott Walker
[e-mail]



From Unknown Tue Nov 21 18:57:15 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!news.ultranet.com!bigboote.WPI.EDU!news3.near.net!tristram.edc.org!news
From: Kevin Kelleher <kevink>
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine,rec.org.mensa.flame.flame.flame
Subject: Re: What some think about sexy hams
Date: 16 Nov 1995 14:37:17 GMT
Organization: Education Development Center
Lines: 4
Message-ID: <48fiat$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487bgm$[e-mail]> <48fhq6$[e-mail]>
NNTP-Posting-Host: tristram.edc.org
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After reading the original "sexy hams" message, I see that the hams in
question where not anatomical, but radio hams.  Sorry.  I just assumed
that in a rec.running, hams were the... well you know.



From Unknown Tue Nov 21 18:57:16 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!rahul.net!a2i!bug.rahul.net!a2i!infoseek.com!uunet!in2.uu.net!news3.digex.net!news1.digex.net!news.spaceworks.com!news.spaceworks.com!not-for-mail
From: [e-mail] (bill harris)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: What some think about sexy hams
Date: 16 Nov 1995 02:20:46 -0500
Organization: SpaceWorks, Incorporated
Lines: 12
Sender: [e-mail]
Message-ID: <48eooe$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]>
NNTP-Posting-Host: mars.spaceworks.com
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Xref: news.epix.net rec.puzzles:52148 rec.puzzles.crosswords:4612 rec.pyrotechnics:37698 rec.radio.amateur.antenna:17155 rec.radio.amateur.digital.misc:12650 rec.radio.amateur.equipment:21467 rec.radio.amateur.homebrew:11610 rec.radio.amateur.misc:94397 rec.radio.amateur.policy:31899 rec.radio.amateur.space:5764 rec.radio.cb:24483 rec.radio.noncomm:4986 rec.radio.scanner:40773 rec.radio.shortwave:66146 rec.radio.swap:51093 rec.roller-coaster:23218 rec.running:45394 rec.scouting:37737 rec.scuba:80472 rec.skiing.alpine:33079

>>I've only been an amateur radio operator for 18 years and I would have to
(snip)
>>Don't let the bad apples spoil the excitement that can be found in amateur
>>radio, there is something there for everyone (wives/girlfriends too).

>Speaking of HAM radios, could this group help me out?  Every time I go and
>dive with my radio set, the fuse blows.  What's the trick here?

Next time you dive make sure there is water in the pool.

Bill - K5MIL



From Unknown Tue Nov 21 18:57:17 1995
Path: news.epix.net!news.sprintlink.net!news.missouri.edu!news
From: Sarah Godfrey <[e-mail].>
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.ra
Subject: Re: What some think about sexy hams
Date: 16 Nov 1995 18:41:55 GMT
Organization: University of Missouri - Columbia
Lines: 3
Message-ID: <48g0lj$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <48be57$[e-mail]>
NNTP-Posting-Host: mac1.phlab.missouri.edu
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What is all this???




From Unknown Tue Nov 21 18:57:18 1995
Path: news.epix.net!news.sprintlink.net!news.onramp.net!news.mind.net!chi-news.cic.net!io.org!van-bc!news.mindlink.net!agate!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!news.ultranet.com!bigboote.WPI.EDU!news3.near.net!tristram.edc.org!news
From: Kevin Kelleher <kevink>
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: What some think about sexy hams
Date: 16 Nov 1995 14:28:22 GMT
Organization: Education Development Center
Lines: 4
Message-ID: <48fhq6$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487bgm$[e-mail]>
NNTP-Posting-Host: tristram.edc.org
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Please add rec.org.mensa.flame.flame.flame to this thread.

And let me say that I love running behind a woman with sexy hams.



From Unknown Tue Nov 21 18:57:19 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!paladin.american.edu!hookup!swrinde!newsfeed.internetmci.com!globe.indirect.com!grizzarv
From: [e-mail] (Robert V. Grizzard)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb
Subject: Re: What some think about sexy hams
Followup-To: rec.radio.amateur.misc
Date: 17 Nov 1995 01:23:00 GMT
Organization: Internet Direct, Inc.
Lines: 12
Message-ID: <48go5l$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <48be57$[e-mail]> <48g0lj$[e-mail]>
NNTP-Posting-Host: bud.indirect.com
X-Newsreader: TIN [version 1.2 PL2]
Xref: news.epix.net rec.puzzles:52175 rec.puzzles.crosswords:4618 rec.pyrotechnics:37716 rec.radio.amateur.antenna:17179 rec.radio.amateur.digital.misc:12671 rec.radio.amateur.equipment:21508 rec.radio.amateur.homebrew:11626 rec.radio.amateur.misc:94424 rec.radio.amateur.policy:31918 rec.radio.amateur.space:5772 rec.radio.cb:24502

Sarah Godfrey ([e-mail].) wrote:
: What is all this???


Sarah, this is a thread with a hitherto untrimmed followup-to line.

Since this doesn't fit anywhere else in the known ham radio universe, I'm
going to arbitrarily set the followups to rec.radio.amateur.misc.

I don't know where it started from.

KG7YY (posting from rec.pyrotechnics)


From Unknown Tue Nov 21 18:57:22 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.starlink.com!usenet
From: Bill Funk <[e-mail]>
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: What some think about sexy hams
Date: 18 Nov 1995 18:10:20 GMT
Organization: Star Link Internet Services
Lines: 19
Message-ID: <48l7ic$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <48be57$[e-mail]>
NNTP-Posting-Host: pm1-29.starlink.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.2N (Windows; I; 16bit)
Xref: news.epix.net rec.puzzles:52190 rec.puzzles.crosswords:4623 rec.pyrotechnics:37746 rec.radio.amateur.antenna:17199 rec.radio.amateur.digital.misc:12681 rec.radio.amateur.equipment:21530 rec.radio.amateur.homebrew:11643 rec.radio.amateur.misc:94460 rec.radio.amateur.policy:31938 rec.radio.amateur.space:5778 rec.radio.cb:24518 rec.radio.noncomm:4994 rec.radio.scanner:40855 rec.radio.shortwave:66218 rec.radio.swap:51222 rec.roller-coaster:23235 rec.running:45494 rec.scouting:37790 rec.scuba:80610 rec.skiing.alpine:33248


>Speaking of HAM radios, could this group help me out?  Every time I go and
>dive with my radio set, the fuse blows.  What's the trick here?
>

Ah, yes...
There was a time when having a HAM ticket *meant* something...
When a fuse blows consistantly, it's because there's more current going
thru the fuse than the fuse is rated to carry. The fuse, being a safety
device, blows to prevent this excess current from flowing, possibly
damaging something.
Check to make sure the fuse is the proper rating for the gear. Do *not*
replace it with a higher-rated fuse! If it is the correct fuse, then the
gear is drawing too much current. This needs to be corrected. Maybe it's a
short in the power line, maybe the gear is not a boat anchor. Either
extreme, and all points in between should be checked, and corrected.
Good luck.
Bill



From Unknown Tue Nov 21 18:57:23 1995
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,re
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From: [e-mail] (Tom Perigrin)
Subject: Re: What some think about sexy hams
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In article <48q0d2$[e-mail]>, Bob Crownfield
<[e-mail]> wrote:
>
> Bill Funk <[e-mail]> wrote:
> >
> >>Speaking of HAM radios, could this group help me out?  Every time I go and
> >>dive with my radio set, the fuse blows.  What's the trick here?
> >>
> >
> >Ah, yes...
> >There was a time when having a HAM ticket *meant* something...
> >When a fuse blows consistantly, it's because there's more current going
> >thru the fuse than the fuse is rated to carry. The fuse, being a safety
> >device, blows to prevent this excess current from flowing, possibly
> >damaging something.
> >Check to make sure the fuse is the proper rating for the gear. Do *not*
> >replace it with a higher-rated fuse! If it is the correct fuse, then the
> >gear is drawing too much current. This needs to be corrected. Maybe it's a
> >short in the power line, maybe the gear is not a boat anchor. Either
> >extreme, and all points in between should be checked, and corrected.
> >Good luck.
> >Bill
> >
>
> Bill:
>       Why are you talking about radios in rec.scuba? How did this ham
> chat get lost in rec.scuba in the first place?

Personally, I think a group of less than laudable people got together and
decided to have fun by posting a series of totally meaningless messages in
a set of totally inappropriate places.  Theater of the absurd.   Okay guys,
we've seen it; I give it a 3 on difficulty and a 4 on creativity.   No
medal, not even honorable mention.  So, wrap up the production, go away...
don't call us, we'll call you.


---

If I was smart, I'd have a clever .sig


From Unknown Tue Nov 21 18:57:24 1995
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From: [e-mail] (Ken Cook)
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Subject: Re: Which HF Vertical
Date: 21 Nov 1995 14:49:21 GMT
Organization: Netcom
Lines: 39
Message-ID: <48soth$[e-mail]>
References: <Pine.BSD/[e-mail]>
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In <Pine.BSD/[e-mail]> Kory
Hamzeh <[e-mail]> writes:
>
>
>Hi Everyone,
>
>I'm looking for a good HF vertical for DXing. I need 10M, 20M, and
40M.
>80M would be great, but not mandatory. I've looked at the Cushcraft,
>Butternut, Hygain, Hustler. I would like to hear about your
experiences
>with these antennas, how much power you where running. what band and
what
>contacts where made.
>
>I know verticals are less than ideal for DXing, but nothing else is
>possible right now.
>
>Thanks,
>Kory
>KE6VWO
>
I picked up a second hand Butternut HF-6V a few years ago, planted it
in my back yard with a good ground rod, lots of radials (more is
better!) and I think it does pretty darn good for an almost all band
antenna.  I also have a problem putting up what I would really like to
have so I use inverted vees, rotatable dipoles made of hamsticks (20
meters but I will be adding others to test later) and all sorts of
strange G5RV type configurations that are pretty well hidden in the
trees and do pretty well keeping up with the big boys.

My Butternut is actually in the middle of several trees and within 18
feet or so of my two story house and I still have not noticed any great
loss.  They is likely no "perfect" antenna anyway so part of the fun is
just stringing up what your pocketbook and covenants will allow and
giving it a whirl!

Good luck
Ken Cook / N5RVK


From Unknown Tue Nov 21 18:57:25 1995
Path: news.epix.net!news.sprintlink.net!gatech2!swrinde!newsfeed.internetmci.com!in1.uu.net!news.uiowa.edu!VECTRAM035.REQS.UIOWA.EDU
From: email_user_id@email_address
Newsgroups: rec.radio.amateur.antenna
Subject: WTB:  TET Swiss Quad prefer 20m, but wuold consider 15m 0r 10m
Date: Fri, 17 Nov 95 14:42:40
Organization: University of Iowa, Iowa City, IA, USA
Lines: 2
Distribution: world
Message-ID: <48is7p$[e-mail]>
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Call me at 319-335-0387 or 319-351-3844(eves) or leave maessage here.
Tns,     Cul,     73,     John    AA0LG


From Unknown Tue Nov 21 18:57:26 1995
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From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help butternut hf6v"
Date: 17 Nov 95 19:03:54 GMT
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The mailing list "butternut" could not be found.
You may use the INDEX command to get a listing
of available mailing lists.


From Unknown Tue Nov 21 18:57:27 1995
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From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help butternut hf6v"
Date: 18 Nov 95 01:10:36 GMT
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The mailing list "butternut" could not be found.
You may use the INDEX command to get a listing
of available mailing lists.


From Unknown Tue Nov 21 18:57:27 1995
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From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help butternut hf6v"
Date: 18 Nov 95 15:59:07 GMT
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Message-ID: <[e-mail]>
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The mailing list "butternut" could not be found.
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of available mailing lists.


From Unknown Tue Nov 21 18:57:28 1995
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From: Listserv@ucsd (Mailing List Processor)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: your LISTSERV request "help the helpless"
Date: 18 Nov 95 15:59:09 GMT
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The mailing list "the" could not be found.
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From Unknown Sun Nov 26 04:43:05 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!murphy.worldweb.net!not-for-mail
From: [e-mail] (Luiz Marcondes)
Subject: Re: "Taper" program?
Message-ID: <b167cb$[e-mail]>
Date: Wed, 22 Nov 1995 06:41:23 GMT
References: <48rcu9$[e-mail]>
X-Newsreader: Forte Agent .99b.113
Lines: 32

On 20 Nov 1995, [e-mail] wrote:

>I was wondering if anyone out there has heard of the taper program? I'm
>not sure if it is dos based or windows,or what would be a good ftp or
>web site to look to.Basically,it is program that calculates the dif-
>ference in shaft diameters in beam elements as to resistance and im-
>pedance.I'm designing myself a set of 11 meter beams,and this would be
>the final parameter in the design.Thanx in advance!   **STEPS**

The companion diskette for the ARRL Antenna Book has a basic program
called TAPER that will take a constant diameter element and give you the
equivalent tapered design. This is a sample run:

Frequency (MHz)? 100
Cylinder halflength (wavelengths)? .24
Cylinder diameter (wavelengths)? .01
Number of pieces per half-element ( <= 9 )? 4
Part 1  length (inches), diameter (eighth-inches)? 8,4
Part 2  length (inches), diameter (eighth-inches)? 8,2
Part 3  length (inches), diameter (eighth-inches)? 8,1
part 4                   diameter (eighth-inches)? .5
>> End piece length =   7.5324 inches <<
Another case (y or n)? n

I don't know of a program that will take impedance values and will give
direct lenghts and diameters
Regards,

Luiz Marcondes
--
<[e-mail]> - PGP key available




From Unknown Sun Nov 26 04:43:06 1995
Path: news.epix.net!news.sprintlink.net!news.cirrus.com!bug.rahul.net!a2i!infoseek.com!uunet!in1.uu.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (Ken KD1XS)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: "tigertails"?
Date: 23 Nov 1995 23:31:58 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 8
Sender: [e-mail]
Message-ID: <493hrv$[e-mail]>
References: <[e-mail]>
Reply-To: [e-mail] (Ken KD1XS)
NNTP-Posting-Host: newsbf02.mail.aol.com

The "Tigertail" looks like just a piece of wire.  On HF it would be called
a radial or counterpoise.  234/F in MHz should give you the lenght in
feet.

HT antennas are very inefficient.  I would guess that anything added to it
would help.

Ken KD1XS


From Unknown Sun Nov 26 04:43:07 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!overload.lbl.gov!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!uwm.edu!msunews!netnews.upenn.edu!Lehigh.EDU!Lehigh.EDU!not-for-mail
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: 10 GHz dish feed needed
Date: 24 Nov 1995 16:01:21 -0500
Lines: 12
Message-ID: <495br1$[e-mail]>
NNTP-Posting-Host: ns1-1.cc.lehigh.edu

Hello, i need some info on an EASY to biuld 10 GHz dish feed


thanks
DAvid
|-----------------------------------------------------------------------|
|         David Roseman       |          [e-mail]       OUTTA ORDER!
|                             |          Saucon Valley Sen. HS   |      |
|      SysOp of NODE 3 BBS    |          The Flying HAm - BBS    |      |
|     Running OBV/2 Software  |          Technomage - BBS        |      |
|                             |          N3SQE/1     - HAm       V      |
|                             |  [e-mail] - Packet  |


From Unknown Sun Nov 26 04:43:08 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 10 GHz dish feed needed
Date: 25 Nov 1995 13:41:07 GMT
Organization: The DataXchange Network, Inc
Lines: 31
Message-ID: <4976dj$[e-mail]>
References: <495br1$[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <495br1$[e-mail]>, [e-mail] says...
>
>Hello, i need some info on an EASY to biuld 10 GHz dish feed
>
>
>thanks
>DAvid
>|---------------------------------------------------------------------
--|
>|         David Roseman       |          [e-mail]       OUTTA
ORDER!
>|                             |          Saucon Valley Sen. HS   |
  |
>|      SysOp of NODE 3 BBS    |          The Flying HAm - BBS    |
  |
>|     Running OBV/2 Software  |          Technomage - BBS        |
  |
>|                             |          N3SQE/1     - HAm       V
  |
>|                             |  [e-mail] - Packet
 |
Use the penny splash feed.  It just so happens that 3/4 copper pipe
makes excellent waveguide for 10ghz.  A copper disk or pcb board cut
circular to 3/4" mounted 3/4" from the end of the copper tubing will
splash the signal into the tubing.  Of course all this mounts thru the
center of the dish and the disc is located 3/4" short of the focus.

Refer to the ARRL Microwave handbook for more info . . .

KG5VE [e-mail]



From Unknown Sun Nov 26 04:43:09 1995
Path: news.epix.net!news.sprintlink.net!news.scott.net!acara.snsnet.net!HiWAAY.net!imci2!newsfeed.internetmci.com!globe.indirect.com!s125.phxslip4.indirect.com!tracker
From: [e-mail] (Mark Saunders)
Newsgroups: rec.radio.amateur.antenna
Subject: 160m vertical.  Need ideas!
Date: Fri, 24 Nov 1995 08:05:41 UNDEFINED
Organization: Amateur Radio Station KJ7BS
Lines: 11
Message-ID: <[e-mail]>
NNTP-Posting-Host: s125.phxslip4.indirect.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #1]

Well, I finally got a rig that will go down to 160m.  Now the problem is an
antenna.  I live on a larger than average residential lot (85' X  70').  I
would like to build a 160m antenna and I think the only option I have at this
point is a vertical.  Please help me with any ideas and design information.  I
would like to have it for the 160m contest in January (I think).

Reach me at any of the electronic addresses listed below.

Thanks




From Unknown Sun Nov 26 04:43:10 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!info.ucla.edu!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail] (DENIS)
Newsgroups: rec.radio.amateur.antenna
Subject: 20 meter delta beam-anybody got dimensions?
Date: 23 Nov 95 22:52:15 GMT
Organization: ucsd usenet gateway
Lines: 13
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

Hello all,

I can only get a beam up 30 feet and it also must be lightweight.
A delta beam sould give reasonable results at that height and if made
with wire and plastic/fiberglass tubing should satisfy the second
condition. I need dimensions for a two element and also for a three
element design that will cover 20 meters.

Any comments on feeding/matching also welcome.

Thanks in advance

Denis


From Unknown Sun Nov 26 04:43:11 1995
Path: news.epix.net!news.sprintlink.net!news.azstarnet.com!usenet
From: Wes Stewart <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 40 OHMS OF GROUND LOSS??
Date: 22 Nov 1995 03:36:19 GMT
Organization: Arizona Daily Star - AZSTARNET
Lines: 47
Message-ID: <48u5rj$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: usr8ip33.azstarnet.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
To: [e-mail]

USCG TELECOMMS <[e-mail]> wrote:
>I HAVE A TOP LOADED VERTICAL (A TEE WITH 75' VERTICAL AND A 200' FLATOP)
>WITH ABOUT 40 RADIALS LAYING ON THE GROUND.  THE RADIALS ARE A MIXTURE OF
>40' AND 120 FOOT LENGTHS.  THE SYSTEM OPERATES ON 160 METERS AND ALL
>WIRE, INCLUDING RADIALS, STILL HAVE THE INSULATION (#12 GUAGE).  ALL
>RADIALS ARE GROUNDED AT THE FEEDPOINT.  I TUNE THIS ANTENNA WITH A
>REMOTELY TUNED L NETWORK (THE NETWORK IS AT THE BASE OF THE ANTENNA).
>EZNEC AND NEC/WIRES PREDICTS THE RESISTIVE COMPONENT TO BE PRETTY CLOSE
>TO 50 OHMS WITH ABOUT A 300 OHM REACTIVE COMPONENT.  I RECENTLY USED AN
>OLD BOONTON RX METER TO DETERMINE THE FEEDPOINT RESISTANCE; IT SAYS THE
>RESISTANCE IS 90 OHMS.  THIS VALUE IS CLOSE BECAUSE WHEN IF I TUNE OUT
>THE REACTANCE USING A SERIES CAPACITOR, THE SWR IS NEARLY 2:1.  WHERE IS
>THIS EXTRA 40 OHMS COMING FROM, GROUND LOSS (I DOUBT IT), TREE LOSS, OR
>WIRE LOSS?  ANYBODY OUT THERE WITH ANY IDEAS?.....RON, W4VR

First things first.  Please turn off your caps lock key.

I built a quick model of your antenna in EZNEC and more or less
get the same results as you did. I don't know the conductor size
of your vertical or the exact modeling freq, but good enough.

One other thing I don't know about is whether your RX meter resistance
reading was with the 'C' dial at 0 pF. If it was not, I believe that
may be the source of your confusion. The Boonton RX meter reports the
parallel equivalent R+/-C. To get the series equivalent, your must first
convert the capacitance reading to reactance at the measurement frequency
and then do a parallel to series conversion to get a comparable number
to the EZNEC prediction.

You may be well aware of the above, in which case, I hope I haven't
offended you. I can think of one other possibility that might corrupt
the measurement and that is BC band interference.  The RX meter uses
two oscillators separated by 250 KHz to generate a 250 KHz IF. When you
adjust the "detector tuning", you are setting this differance frequency.
It could be that there is a BC band signal that is close enough to one
of these frequencies to be downconverted into the IF, where it screws
up the null. You might test this theory by modeling the antenna at some
higher frequency and then performing a measurement at that frequency.

Of course, all of the above is conjecture and your SWR measurement
tends to confirm the other test data, so I dunno...

Tell us more.

73, Wes -- N7WS




From Unknown Sun Nov 26 04:43:13 1995
Path: news.epix.net!news.sprintlink.net!news.azstarnet.com!usenet
From: Wes Stewart <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 40 OHMS OF GROUND LOSS??
Date: 22 Nov 1995 03:37:08 GMT
Organization: Arizona Daily Star - AZSTARNET
Lines: 47
Message-ID: <48u5t4$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: usr8ip33.azstarnet.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
To: [e-mail]

USCG TELECOMMS <[e-mail]> wrote:
>I HAVE A TOP LOADED VERTICAL (A TEE WITH 75' VERTICAL AND A 200' FLATOP)
>WITH ABOUT 40 RADIALS LAYING ON THE GROUND.  THE RADIALS ARE A MIXTURE OF
>40' AND 120 FOOT LENGTHS.  THE SYSTEM OPERATES ON 160 METERS AND ALL
>WIRE, INCLUDING RADIALS, STILL HAVE THE INSULATION (#12 GUAGE).  ALL
>RADIALS ARE GROUNDED AT THE FEEDPOINT.  I TUNE THIS ANTENNA WITH A
>REMOTELY TUNED L NETWORK (THE NETWORK IS AT THE BASE OF THE ANTENNA).
>EZNEC AND NEC/WIRES PREDICTS THE RESISTIVE COMPONENT TO BE PRETTY CLOSE
>TO 50 OHMS WITH ABOUT A 300 OHM REACTIVE COMPONENT.  I RECENTLY USED AN
>OLD BOONTON RX METER TO DETERMINE THE FEEDPOINT RESISTANCE; IT SAYS THE
>RESISTANCE IS 90 OHMS.  THIS VALUE IS CLOSE BECAUSE WHEN IF I TUNE OUT
>THE REACTANCE USING A SERIES CAPACITOR, THE SWR IS NEARLY 2:1.  WHERE IS
>THIS EXTRA 40 OHMS COMING FROM, GROUND LOSS (I DOUBT IT), TREE LOSS, OR
>WIRE LOSS?  ANYBODY OUT THERE WITH ANY IDEAS?.....RON, W4VR

First things first.  Please turn off your caps lock key.

I built a quick model of your antenna in EZNEC and more or less
get the same results as you did. I don't know the conductor size
of your vertical or the exact modeling freq, but good enough.

One other thing I don't know about is whether your RX meter resistance
reading was with the 'C' dial at 0 pF. If it was not, I believe that
may be the source of your confusion. The Boonton RX meter reports the
parallel equivalent R+/-C. To get the series equivalent, your must first
convert the capacitance reading to reactance at the measurement frequency
and then do a parallel to series conversion to get a comparable number
to the EZNEC prediction.

You may be well aware of the above, in which case, I hope I haven't
offended you. I can think of one other possibility that might corrupt
the measurement and that is BC band interference.  The RX meter uses
two oscillators separated by 250 KHz to generate a 250 KHz IF. When you
adjust the "detector tuning", you are setting this differance frequency.
It could be that there is a BC band signal that is close enough to one
of these frequencies to be downconverted into the IF, where it screws
up the null. You might test this theory by modeling the antenna at some
higher frequency and then performing a measurement at that frequency.

Of course, all of the above is conjecture and your SWR measurement
tends to confirm the other test data, so I dunno...

Tell us more.

73, Wes -- N7WS




From Unknown Sun Nov 26 04:43:14 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!paladin.american.edu!gatech!newsfeed.internetmci.com!in2.uu.net!pgh!billyboy
From: [e-mail] (Robert Mazza)
Subject: Ant. for heath 6m A.M.
Message-ID: <[e-mail]>
Date: Thu, 23 Nov 1995 05:43:47 GMT
Organization: Nauticom - Internet Access Provider
X-Newsreader: TIN [version 1.2 PL2]
Lines: 10

I recently picked up a Heath six meter transceiver. Does any of you good
folk know of a good, cheep, and effective antenna for that rig?





Thank you,

[e-mail]


From Unknown Sun Nov 26 04:43:14 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!paladin.american.edu!gatech!newsfeed.internetmci.com!news-feed.mci.newscorp.com!news.delphi.com!usenet
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Ant. for heath 6m A.M.
Date: Fri, 24 Nov 95 02:36:51 -0500
Organization: Delphi ([e-mail] email, 800-695-4005 voice)
Lines: 10
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: bos1g.delphi.com
X-To: Robert Mazza <[e-mail]>

Robert Mazza <[e-mail]> writes:

>I recently picked up a Heath six meter transceiver. Does any of you good
>folk know of a good, cheep, and effective antenna for that rig?

Gee, was that a Sixer? I had one in the late 50s or early 60s when they first
ns of fun with it. I used a dipole up not very high and worked
all kinds of stuff when the band was open. When the band is open any thing,
vertical, dipole, etc will work great. I even made a lot of "skip" contacts
when mobule with a halo.               Lucky you............de N6WR.


From Unknown Sun Nov 26 04:43:15 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!news.sover.net!uunet!in1.uu.net!prodigy.com!usenet
From: [e-mail] (Alan Maslin)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Ant. for heath 6m A.M.
Date: 25 Nov 1995 03:05:59 GMT
Organization: Prodigy Services Company  1-800-PRODIGY
Lines: 15
Distribution: world
Message-ID: <49616n$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: inugap1.news.prodigy.com
X-Newsreader: Version 1.2

You could build a simple dipole and it should work just fine.  I was
active on 6 for a number of years in the '60's. Best antenna I had was a
5 element Cushcraft beam. These antennas are not very expensive
(depending on your definition of "expensive") and they work just great.

If your Heath rig is a "Sixer" you should have lots of fun with it.
Matter of fact, I still have one of those here although it hasn't been
turned on in years.

73,

Al
W3DZI




From Unknown Sun Nov 26 04:43:16 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news1.i1.net!news1.inlink.com!usenet
From: [e-mail] (Gary V. Deutschmann, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Ant. for heath 6m A.M.
Date: Sat, 25 Nov 1995 19:32:11 GMT
Organization: Inlink
Lines: 24
Message-ID: <497qqi$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: slip17.inlink.com
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Robert Mazza) wrote:

>I recently picked up a Heath six meter transceiver. Does any of you good
>folk know of a good, cheep, and effective antenna for that rig?

For several years I used a halo-antenna mobile yet.  But on the base I
run two separate antennas.  My old Heathkit Sixer LunchBox is hooked
up to a 6-meter homebrew J-Pole and my Yaesu FT620B is hooked up to a
6-meter Ringo.  I like the J-Pole better!

If you want plans for the J-Pole, drop me an e-mail and I will forward
a copy to you.

Gary - KG0ZP





>Thank you,

>[e-mail]




From Unknown Sun Nov 26 04:43:17 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!spool.mu.edu!torn!news.unb.ca!scratchy.mi.net!fougereg
From: [e-mail] (fougereg)
Newsgroups: rec.radio.amateur.antenna
Subject: Antenna design wanted
Date: Thu, 23 Nov 95 23:59:16 GMT
Organization: MIS Saint John
Lines: 2
Message-ID: <4931sk$[e-mail]>
NNTP-Posting-Host: fougereg.mi.net
To: all
X-Newsreader: News Xpress Version 1.0 Beta #3

I need a design for a CB antenna.  Email me at [e-mail]



From Unknown Sun Nov 26 04:43:17 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!spool.mu.edu!olivea!express.ior.com!news
From: [e-mail] (Joe Pfeuffer)
Newsgroups: rec.radio.amateur.antenna
Subject: Anybody Use W9INN Antennas ?
Date: 23 Nov 1995 22:08:22 GMT
Organization: Internet On-Ramp, Inc.
Lines: 4
Message-ID: <492rcm$[e-mail]>
NNTP-Posting-Host: cs2-05.ior.com
Mime-Version: 1.0
Content-Type: Text/Plain; charset=ISO-8859-1
X-Newsreader: WinVN 0.99.5

Any experience / opinion appreciated -

Joe - KW1K



From Unknown Sun Nov 26 04:43:19 1995
Path: news.epix.net!news.sprintlink.net!druid.borland.com!ico.net!pacbell.com!nntp-hub2.barrnet.net!news1.digital.com!uunet!in2.uu.net!news.tele.fi!news.csc.fi!nokia.fi!news.nmp.nokia.com!news
From: Ilkka Kontola <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Balun on R7
Date: 24 Nov 1995 07:30:25 GMT
Organization: NMP
Lines: 37
Message-ID: <493sah$[e-mail]>
References: <48lc2d$[e-mail]> <48revh$e6c$[e-mail]>
NNTP-Posting-Host: trepc227.nmp.nokia.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.2N (Windows; I; 16bit)

Roger A. Cox <[e-mail]> wrote:
>You should NOT have to use a balun on an R7 or any other
>of this type antenna.  It is an off-center fed vertical
>dipole fed with a matching unit.  The matching unit
>converts the 200-300 ohm feedpoint to unbalanced 50 ohms.

A current mode balun (choke balun) which reduces common
mode current in the feed line should work well with
R7. As a matter of fact in the black matching box there
is one already. Rumor has it the built-in balun is not
very efficient ie the (common mode) impedance could be
higher.

A more traditional (transformer-like) voltage balun would
probably worsen the situation. Voltage baluns work well
only when load is very symmetric (balanced).

See ARRL Handbook for more a complete description of the
balun types (1992 version: pages 16-8 and 16-9)

My setup:
- R7 on a 2m mast atop a 6m high building
- a few meters of coiled RG-213 as a common mode choke
- a split tube ferrite core on the coiled cable in order
  to reduce the Q of the choke
- two split tube ferrite cores a few meters apart on the
  feed line

>73, Roger WB0DGF

73,  Ilkka OH3NJC
--
Ilkka Kontola                           Amateur radio: oh3njc
Nokia Mobile Phones
Tampere, Finland




From Unknown Sun Nov 26 04:43:19 1995
Path: news.epix.net!news.sprintlink.net!hermes.is.co.za!news.pix.za!usenet
From: Danie Brynard <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Beacon antenna for 1296
Date: 23 Nov 1995 06:51:31 GMT
Organization: PiX - Proxima information X-change
Lines: 5
Message-ID: <4915lj$[e-mail]>
NNTP-Posting-Host: net-6.pta.pix.za
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
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X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

I am looking for ideas for an antenna for 1296MHz for a beacon for
test purposes. The antenna must be omni directional and
horizontally polarized. It must be relatively easy to build it ie
from description say sent via Internet.



From Unknown Sun Nov 26 04:43:20 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!csnews!coopnews.coop.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Beacon antenna for 1296
Date: 25 Nov 1995 13:12:40 GMT
Organization: The DataXchange Network, Inc
Lines: 16
Message-ID: <4974o8$[e-mail]>
References: <4915lj$[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <4915lj$[e-mail]>, [e-mail] says...
>
>I am looking for ideas for an antenna for 1296MHz for a beacon for
>test purposes. The antenna must be omni directional and
>horizontally polarized. It must be relatively easy to build it ie
>from description say sent via Internet.
>
There is a simple antenna called the Alford Slot...basically it is a
verticle piece of tubing with a quarter-wave slot cut parrallel with
the tubing.  It is then fed with 50 ohm coax on the top end.  I am at
work and don't have the design info with me right now but I'll try to
get u some dimensions/formulas to work with.  I might can even scan the
pictures as jpg for u to clear up any unknowns in its design.

73 KG5VE [e-mail]



From Unknown Sun Nov 26 04:43:21 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!usc!sol.ctr.columbia.edu!proto.ida.org!proto.ida.org!not-for-mail
From: [e-mail] (Ed Feustel)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Big wheel antenna
Date: 23 Nov 1995 09:02:00 -0500
Organization: IDA, Alexandria, Virginia
Lines: 36
Message-ID: <491uso$[e-mail]>
References: <48o4q1$[e-mail]> <48q742$[e-mail]>
NNTP-Posting-Host: dmsoproto.ida.org

I have a 4 element stacked bigwheel for 2 meters.
Drop me a large SASE and I will
send you a copy of what Cushcraft provided me for "manuals". Tried to get
Cushcraft to provide me with refurbished cables, but they were not willing
to do so.  Guess that I'll do it myself one day.

Richard Karlquist ([e-mail]) wrote:
: In article <48o4q1$[e-mail]>,
: FSPAULDI  <[e-mail]> wrote:
: >Does anyone have any info on the Big Wheel antenna (especially design
: >info)?  It was invented by Carl Milner W1FVY/K1JSG in the early
: >60's...was omnidirectional, horizontally polarized.  I think Cush-Craft
: >might have manufactured them for a while, too.  Any info would be
: >appreciated.
: >
: >
: >Disclaimer -- not speaking for my employer!!
: >

: It was described in older editions of the ARRL VHF Manual.
: Unfortunately, it doesn't appear in the newer ones.  It's
: three full wave loops laid out in a plane to form a cloverleaf.
: I believe you drive them in phase.  The VHF manual doesn't
: go into much detail about the shape; apparently the exact
: shape isn't critical.   It was supposed to have wider bandwidth
: and a little more gain compared to a halo (another antenna that
: no longer appears in the VHF Manual).  Perhaps you can find
: an old VHF Manual at a hamfest.

: Rick N6RK

--
Edward A. Feustel, Research Staff Member
Institute for Defense Analyses           Phone: [phone]
1801 N. Beauregard Street                Fax:   [phone]
Alexandria, Va. 22311-1772               Email: [e-mail]


From Unknown Sun Nov 26 04:43:22 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!swrinde!newsfeed.internetmci.com!in2.uu.net!news.micron.net!news
From: Terry Dobler KJ7F <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Big wheel antenna
Date: Fri, 24 Nov 1995 09:13:02 -0800
Organization: Micron Internet Services
Lines: 7
Message-ID: <[e-mail]>
References: <48o4q1$[e-mail]> <48q742$[e-mail]>
NNTP-Posting-Host: cs018p02.boi.micron.net
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 2.0b2a (Windows; I; 16bit)

I found a very brief description of the antenna in my 1978
ARRL Handbook on page 328.    You might try checking your
local public library.    The local public library is lacking
in many areas but does have almost every handbook for the 50's
on as well as a good selection of other ARRL books.

Terry KJ7F


From Unknown Sun Nov 26 04:43:23 1995
Path: news.epix.net!news.sprintlink.net!news.magicnet.net!news.supernet.net!usenet.eel.ufl.edu!psgrain!news.tek.com!netman.ens.tek.com!not-for-mail
From: [e-mail] (Terry Burge)
Newsgroups: rec.radio.amateur.antenna
Subject: coax as a ground
Date: 22 Nov 1995 08:33:25 -0800
Organization: Tektronix, Inc., Beaverton, OR, USA
Lines: 18
Message-ID: <48vjcl$[e-mail]>
NNTP-Posting-Host: netman.ens.tek.com

While at the Rickereal hamfest I met an fellow who told me about something
the US Army was doing to get a good ground. It was suggested I do this for
my old boatanchors like my SX-71. 'Really makes the old radios work better'...

Take about a hundred feet of old RG8, RG213, etc. and every 4 feet you short
sheild to center conductor. Lay this in the ground with 1 foot (or so) rods
connected at the shorting spots sticking down into the ground. Run this below
the surface a few inches and lay the coax out in a straight line or a curve or
whatever you can do just to give it as much area as you can reasonably.

This is suppose to help most any radio receive a little better when connecting
the ground to it. I can't really say how well it would protect your prized
possessions from a lightning stike but then nothing really can guarantee that.

Terry
KI7M




From Unknown Sun Nov 26 04:43:24 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!math.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!wariat.org!pcohio!john.palinkas
Distribution: world
Newsgroups: rec.radio.amateur.antenna
Subject: COMET GP-3 ANT.
From: [e-mail] (John Palinkas)
Message-ID: <[e-mail]>
Date: Fri, 24 Nov 1995 18:54:00 -0500
Organization: PC-OHIO PCBOARD - Cleveland, OH - 216-381-3320
Lines: 11

I am considering buying the the Comet GP-3 antenna.  Does anyone have
any experience with this antenna?  Or for that matter any other reports
in the same price range as the GP-3?  Thanks, Happy Holidays. John
KB8YTB.
---
 ■ OLXWin 1.00 ■ [e-mail]

 _ _  ---------------------------------------------------------------
|_|_| PC-OHIO PCBoard OIS      pcohio.com      HST 16.8: 216-381-3320
|_|_| The Best BBS in America  Cleveland, OH  V34+ 33.6: 216-691-3030
      ---------------------------------------------------------------


From Unknown Sun Nov 26 04:43:25 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!news.micron.net!cs021p11.boi.micron.net!stuthill
From: [e-mail] (Scott Tuthill)
Newsgroups: rec.radio.amateur.antenna
Subject: Dynamic Electronics Phased Vertical Array
Date: Tue, 21 Nov 1995 09:20:11
Organization: Micron Internet Services
Lines: 9
Message-ID: <[e-mail]>
NNTP-Posting-Host: cs021p11.boi.micron.net
X-Newsreader: Trumpet for Windows [Version 1.0 Rev A]

In the Feb. 95 issue of The Ham Radio MarketPlace, Dynamic Electronics had an
ad for a 10-40m vertical phased array. I was intrigued by the specs and
interested in something like that for my QTH since I can't have a tower.
However, I am also somewhat skeptical. For example, how can one set of
12' verticals, at one set spacing, offer directivity and gain on 4 different
bands. Has anyone out there had any experience with this antenna array? Can
anyone offer any thoughts?

Scott/AA7TF  [e-mail]


From Unknown Sun Nov 26 04:43:25 1995
Path: news.epix.net!news.sprintlink.net!sparky.insinc.net!newsfeed.direct.ca!imci2!newsfeed.internetmci.com!lamarck.sura.net!news.uky.edu!ukcc.uky.edu!WALLY
From: [e-mail] (Walter R Francis)
Newsgroups: rec.radio.amateur.antenna
Subject: Fold-over feature sturdy/Diamond ant.
Date: Sun, 19 Nov 95 22:47:00 EST
Organization: The University of Kentucky
Lines: 13
Message-ID: <[e-mail]>
NNTP-Posting-Host: ukcc.uky.edu

I am in the market for a dual band antenna with maximum gain for both
2 metres and 70 centimetres, and several options I have looked at have
fold-over features.  However a friend has mentioned he had a fold-ver
antenna several years ago which did not last long with frequent road
trips..

I assume they are made better than were then, but opinions and the like
would be greatly appreciated..

Also, are Diamond antennas constructed with proprietary mount designs,
such that they require you to purchase Diamond mounts?

Thanks!


From Unknown Sun Nov 26 04:43:27 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!sdd.hp.com!usc!news.service.uci.edu!usenet
From: [e-mail] (Brian Williams)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Fold-over feature sturdy/Diamond ant.
Date: 22 Nov 1995 23:00:57 GMT
Organization: UCI Medical Center
Lines: 18
Message-ID: <490a39$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: dialin9062.slip.uci.edu
Mime-Version: 1.0
Content-Type: Text/Plain; charset=ISO-8859-1

In article <[e-mail]>, [e-mail]
says...
>
>I am in the market for a dual band antenna with maximum gain for both
>2 metres and 70 centimetres, and several options I have looked at have
>fold-over features.  However a friend has mentioned he had a fold-ver
>antenna several years ago which did not last long with frequent road
>trips..
Diamond and comet antennas both have the fold-over designs for their
higher gain mobile antennas.  I have owned a comet fold-over for about
5 years without trouble other than having to replace the allen screws
which can loosen after a while. Check every time you replace the oil
in your vehicle.  I have known about 10 people that use the Diamond
or Comet fold-over antennas and have heard nothing but good things from
them.

Brian



From Unknown Sun Nov 26 04:43:28 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.westnet.com!westnet.com!rschaps
From: [e-mail] (Robert Schaps)
Newsgroups: rec.radio.amateur.antenna
Subject: FS Antenna Rotor Cable
Date: 23 Nov 1995 18:54:36 GMT
Organization: WestNet Internet Services
Lines: 24
Message-ID: <492g1c$[e-mail]>
NNTP-Posting-Host: westnet.com
X-Newsreader: TIN [version 1.2 PL2]

I have 250 feet of Beldon 9405 rotor cable.  It is made up of 6 # 18 and
2 # 16.  Never used.  I'll pay shipping with the U.S.  If you're
interested, email your best offer.

TNX es 73,

Bob

--
______________________________________________________________________________
Robert S. Schaps                Internet:       [e-mail]
Signacon Controls, Inc.         Office Phone:   [phone] ext. 110
6 Westchester Plaza             Office Fax:     [phone]
Elmsford, NY  10523-1611
                                Amateur Radio   [e-mail]
Opinions expressed are mine,    APS             159603
and not that of my employer.
------------------------------------------------------------------------------
                        Signacon Controls, Inc.

Specialists in design, sales, installation, and service of closed circuit
television, card access control, fire alarm, parking control, traffic control,
sound, instructional technology, video imaging, intercom, and bar code systems
______________________________________________________________________________


From Unknown Sun Nov 26 04:43:29 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: GAP DX-VI 80 m Performance
Date: 25 Nov 95 11:21:04 GMT
Organization: ucsd usenet gateway
Lines: 14
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

Has anyone had any experience attempting to improve the efficiency of
the GAP DX V, VI, VII, etc series of antennas on 80 m?  This is the
31.5' model, not it's big brother that only covers 160 m - 20 m.  GAP
admits that the DX-VI works best on 40 m and above.  I've found this to
be true, with the GAP being equal to a horizontal dipole at least on 40
m and 20 m.  GAP admitted to me that the matching system used on 80 m,
degrades the efficiency of the antenna.  I find it to be down 10 - 15
db over a dipole at 60'.  My particular antenna uses 4-15' and 4-25'
counterpoise wires.  I think the newer versions dropped the 15' wires.
Perhaps it's as good as it's going to get.  However, if anyone has been
able to improve on GAP's design I'd appreciate hearing about it. TNX,
de Rick, KN3C




From Unknown Sun Nov 26 04:43:30 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!usenet.kornet.nm.kr!agate!howland.reston.ans.net!newsfeed.internetmci.com!news.kei.com!simtel!lll-winken.llnl.gov!uwm.edu!vixen.cso.uiuc.edu!FirePower.com!airwaves!rrb
From: Ian Butt <[e-mail]>
Newsgroups: alt.business.telecommunication.services,alt.radio.digital,rec.radio.amateur.antenna,rec.radio.amateur.misc,rec.radio.antenna.misc,rec.radio.broadcasting,rec.radio.info,rec.radio.shortwave,uw.radio.amateur
Subject: Help - Low speed Radio Communication
Followup-To: rec.radio.broadcasting
Date: 23 Nov 1995 07:43:45 GMT
Organization: The University of Western Ontario, London, Ont. Canada
Lines: 22
Approved: [e-mail]
Distribution: world
Message-ID: <4918nh$[e-mail]>
NNTP-Posting-Host: clm.aiss.uiuc.edu
Originator: [e-mail]
Xref: news.epix.net alt.business.telecommunication.services:64 alt.radio.digital:1322 rec.radio.amateur.antenna:17274 rec.radio.amateur.misc:94610 rec.radio.broadcasting:18532 rec.radio.info:10431 rec.radio.shortwave:66363



Hi,

   I have to do a paper on low speed radio communication.  Low speed, I
mean up to and including Amplitude modulation(AM) and shortwave radio.  I
don't really want to know much about the physics of radio communication.
I am suppose to write about error correction, error detection, and
physical faults with this communication.  It is for a fourth year
information, coding theory course.  I have looked through our library and
there isn't much I can find on it.  Any help or information would be much
appreciated....

Thanks very much...

Sincerely,
Ian Butt
4th Year Computer Science
University Of Western Ontario                [e-mail]
Canada                                       Voice: 519-850-7949




From Unknown Sun Nov 26 04:43:31 1995
Path: news.epix.net!news.sprintlink.net!news.us.world.net!ns2.mainstreet.net!news.jersey.net!news.win.bright.net!brutus.bright.net!chi-news.cic.net!newsfeed.internetmci.com!miwok!usenet
From: Robert Meyer <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Help with antenna for portable radio
Date: 24 Nov 1995 20:28:18 GMT
Organization: North Bay Network, Inc. news server - not responsible for content
Lines: 8
Message-ID: <4959t2$[e-mail]>
NNTP-Posting-Host: srf-37.nbn.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1 (Macintosh; U; 68K)
X-URL: news:rec.radio.amateur.antenna

I have a Sony portable radio/tape/cd player with a single pull out
antenna. The radio has no provision for adding a seperate antenna. Is
there anyway that I can improve my reception? Are there any
modifications I can make to the existing antenna? Can I remove the
existing antenna and replace it with something else? Any help would be
greatly appreciated. Thanks




From Unknown Sun Nov 26 04:43:31 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news1.digex.net!news3.digex.net!digex.net!not-for-mail
From: [e-mail] (Michael Effron)
Newsgroups: rec.radio.amateur.antenna
Subject: HF6V  Manual
Date: 25 Nov 1995 06:45:19 -0500
Organization: Express Access Online Communications, Greenbelt, MD USA
Lines: 11
Message-ID: <496vkf$[e-mail]>
NNTP-Posting-Host: acy1.digex.net


Would anyone have a copy of the Butternut HF6V installation manual? I
would gladly cover charges for a complete copy.

Thanks - Mike

--
<< Michael Effron >>

[e-mail]   =   Internet
[e-mail]    =   Amateur Radio TCP/IP


From Unknown Sun Nov 26 04:43:32 1995
Path: news.epix.net!news.sprintlink.net!dfw.nkn.net!news.startext.net!news
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: How to put Tropez 900mhz cordless phones' antenna on roof?
Date: 24 Nov 1995 23:12:44 GMT
Organization: StarText department of the Fort Worth Star Telegram
Lines: 8
Message-ID: <495jhc$[e-mail]>
NNTP-Posting-Host: dial9.startext.net
X-Newsreader: SPRY News 3.03 (SPRY, Inc.)

Probably the wrong newsgroup, but it's the closest I could find..<grin>
I've a Tropez 900mhz digital cordless phone.. I can use it from about 6-7 houses away
as-is.. What would I need to do to place the antenna (one made for the purpose..) on
the roof? Just a coax cable hooked to the antenna connection (on the inside of the
phone.. no plugs) and grounded to the phone itself?...
There any laws concerning how high the antenna can be placed? I've friends who
have one on the 4th floor (3rd floor with loft) of their apt...



From Unknown Sun Nov 26 04:43:33 1995
Path: news.epix.net!news.sprintlink.net!news.heurikon.com!uwvax!fullfeed!tricia!pendragon.jsc.nasa.gov!news.msfc.nasa.gov!newsfeed.internetmci.com!in2.uu.net!li.net!bbruhns
From: [e-mail] (Bob Bruhns)
Newsgroups: rec.radio.amateur.antenna
Subject: Is Old hardline any good?
Date: 22 Nov 1995 05:59:44 GMT
Organization: LI Net (Long Island Network)
Lines: 19
Message-ID: <48ue8g$[e-mail]>
NNTP-Posting-Host: linet04.li.net
X-Newsreader: TIN [version 1.2 PL2]

  Corrision on the inner surface of the shield and the outer surface of
the center conductor will degrade performance, from the upper frequencies
down.  If your application is HF, it may not be a problem.

  Some old police radio guys once told me about how they had to insulate
their uninsulated hardline from the tower legs, because they got intermod
when the shield touched the tower.  I think there must be significant
currents flowing on the outside of the shield (pickup from antennas
around the cable); poor, dissimilar-metal contact with the tower leg,
perhaps involving arcing through paint, combines these signals in a most
unpleasant fashion.

  They took 2 X 4's and notched them, then clamped two together around
the several hardlines and a tower leg.  After they insulated and
supported the entire lengths of the hardlines with several of these
stockades, the cables were neatly dressed, and the intermod was gone.
Note that the antennas were still "grounded" to the tower by the mounts;
evidently, a good connection causes no problem.



From Unknown Sun Nov 26 04:43:34 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!info.ucla.edu!library.ucla.edu!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: RE: Mobile antennas for Limited Space
Date: 22 Nov 95 19:44:52 GMT
Organization: ucsd usenet gateway
Lines: 14
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

"George J. Molnar" <[e-mail]> wrote:
>Has anyone had success using mobile whips as limited-space antennas
>on 80 meters? I know the bandwidth would be VERY limited, but that's
>okay -- would just like to get out on a small part of the band -- at
>all! My initial tries (2 whips fed with coax in the attic) work about
>as well as a dummy load. I must be missing something, eh?

The company that sells Hamsticks (Lakeview, I think) makes a dipole
mount which allows you to use 2 hamsticks as a rotatable dipole.  I
tried it once with 2 80m hamsticks.  My impression of the test was that
there was no difference between the dipole mount and the single
hamstick.  Never tried it on any other band.  de Rick, KN3C




From Unknown Sun Nov 26 04:43:35 1995
Path: news.epix.net!news.sprintlink.net!ionews.ionet.net!usenet
From: Hank Blackstock <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: RE: Mobile antennas for Limited Space
Date: 23 Nov 1995 13:18:49 GMT
Organization: IONet
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To: [e-mail]

Hello Rick,
  You basic problem is using a Ham stick on 80 meters to begin
with. I think if you used two texas bugcatchers in a dipole
config. that the results would be much improved. Read info in
ARRL handbook on HF mobile antennas and you will find that in
order to have a decent shortened antenna you just got to have a
big coil! This is particulary true on 80 Meters. You will also
find that the Bugcatcher has a very low feedpoint impedance
therefore some matching network will be required.
   Another solution might be a pair of the so called
screwdriver antennas therby getting around the bandwith
problem. I have homebrew version of screwdriver antenna but
with much larger coil. I have thougth of building a dipole
version using one drive motor for such an application.
           73 Hank  WA5JRH



From Unknown Sun Nov 26 04:43:36 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Ken Cook)
Newsgroups: rec.radio.amateur.antenna
Subject: RE: Mobile antennas for Limited Space
Date: 24 Nov 1995 02:23:32 GMT
Organization: Netcom
Lines: 41
Message-ID: <493ab4$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: ix-hou5-20.ix.netcom.com
X-NETCOM-Date: Thu Nov 23  6:23:32 PM PST 1995

In <[e-mail]>
[e-mail] writes:
>
>"George J. Molnar" <[e-mail]> wrote:
>>Has anyone had success using mobile whips as limited-space antennas
>>on 80 meters? I know the bandwidth would be VERY limited, but that's
>>okay -- would just like to get out on a small part of the band -- at
>>all! My initial tries (2 whips fed with coax in the attic) work about

>>as well as a dummy load. I must be missing something, eh?
>
>The company that sells Hamsticks (Lakeview, I think) makes a dipole
>mount which allows you to use 2 hamsticks as a rotatable dipole.  I
>tried it once with 2 80m hamsticks.  My impression of the test was
that
>there was no difference between the dipole mount and the single
>hamstick.  Never tried it on any other band.  de Rick, KN3C
====================================================================>
Rick.....

I use two hamstick type mobil antennas mounted as dipoles and rotate
them with a Radio Shack rotor.  I use 20 meter hamsticks but have
considered "stacking" others just under the 20 meter pair.

My antenna's are mounted on the chimney just above my two story house.
They are about 45 feet high.  I have been very pleased with the setup
over the last couple of years and do find that they are directional and
work better, of course, if rotated broadside to the station worked.

Now, as to whether I could accomplish the same thing with one hamstick
properly grounded, I really don't have a clue.  Anyway, I am very
pleased with that arrangement and certainly suggest that folks give it
a try as it is rather simple and inexpensive, not to mention (and this
is the main reason I use them), they just don't attract a lot of
attention.

I would also like to hear comments from others regarding this subject.

Ken / N5RVK

=====================================================================


From Unknown Sun Nov 26 04:43:38 1995
Path: news.epix.net!news.sprintlink.net!cs.utexas.edu!news.ti.com!usenet
From: [e-mail] (J.Fitter   BV/N0IAT)
Newsgroups: rec.radio.amateur.antenna
Subject: RE: Mobile antennas for Limited Space
Date: 24 Nov 1995 11:42:19 GMT
Organization: Taipei, TAIWAN R.O.C
Lines: 52
Message-ID: <494b2r$[e-mail]>
References: <[e-mail]> <493ab4$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: 137.167.36.115
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.2

>I use two hamstick type mobil antennas mounted as dipoles and rotate
>them with a Radio Shack rotor.  I use 20 meter hamsticks but have
>considered "stacking" others just under the 20 meter pair.

see my comment below instead of stacking...just offset their position by 60 or 90 degrees
(looks like a star or plus sign from above).

>My antenna's are mounted on the chimney just above my two story house.
>They are about 45 feet high.  I have been very pleased with the setup
>over the last couple of years and do find that they are directional and
>work better, of course, if rotated broadside to the station worked.
>
>Now, as to whether I could accomplish the same thing with one hamstick
>properly grounded, I really don't have a clue.  Anyway, I am very
>pleased with that arrangement and certainly suggest that folks give it
>a try as it is rather simple and inexpensive, not to mention (and this
>is the main reason I use them), they just don't attract a lot of
>attention.
>
>I would also like to hear comments from others regarding this subject.
>
>Ken / N5RVK
>
>=====================================================================

I have used the COMET series of mobile HF antennas in a dipole configuration, also
on 20 meters.  However, I've used them on 17 and 15 as well, with better performance
the higher in freq you go.  The Q on these antennas are pretty high, so the tuning
bandwidth is low.  As a plus, the high Q tends to reduce TVI and out-of-band rejection.
When in JA, I used this configuration but I "multibanded" the setup by mounting the three
loaded wip dipoles at 60 degree angles to eachother at the top of a 1 meter mast using a
cheap TV rotator.  I fed them independendently and just used a "template" on the rotor
box to indicate direction (remember, each dipole was 60 degrees offset from the next.  The
mounting was at the top of the 1 meter mast, so the dipoles did not have to be "spaced"
apart.  Performance was as good as a "full sized" trap rotatable dipole, though power
handling was only 150 watts max or so.

For best results, I've found nothing beat my Texas Bugcatcher mounted on the ground to an 8
foot groundrod in Dallas, TX.  I could work all bands (80 thru 10 anyway) and the antenna was
pretty low profile.  However, it was about 11 feet tall (7 foot whip, 1 foot coil, 2 foot
lower support mast).  I used _no_ radials and just a coaxial balun at the base of the
antenna.  For a while, I even used an old Drake L4-B amp with the setup...causing TVI all
over the apartment complex but was able to crack several pileups on 40!  Never ran much on 80
or 75 with it, but it worked well on 40 cw and 30 cw.

73,  and hope to see ya in the CQWW CW contest.
--
73 from Joe BV2/N0IAT now in  Taipei, Taiwan R.O.C.

Ex. 7J1AOF(Japan) KA0ZDH(novice) YU3/N0IAT(Slovenia)
Licensed Radio Amateur since 1986 //comments are mine only



From Unknown Sun Nov 26 04:43:39 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Date: 25 Nov 1995 07:41:32 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 27
Sender: [e-mail]
Message-ID: <4972ts$[e-mail]>
References: <491sbp$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

In article <491sbp$[e-mail]>, Hank Blackstock
<[e-mail]> writes:

> I think if you used two texas bugcatchers in a dipole
>config. that the results would be much improved

Hi Hank,

Actually you could do much better than a bug catcher. The Bugcatcher's hat
is positioned improperly. The ideal hat location is at the open end of the
antenna, not near the coil.

The hat could be properly located in a home dipole, where the hat wouldn't
snag on obstructions.

Also, current loop radiation resistance increases by a factor of nearly
four when a short antenna is end rather than feedpoint loaded. If a hat is
used, and the coil is moved to the outer ends, even a loading coil with a
few times more loss resistance will have more net efficiency.

The Q and bandwidth of the overall system is more dependent on the
inductance of the coil at resonance than losses in the coil.

The screwdriver technique is an interesting idea, especially if the coils
were moved out to the ends of the element.
73 Tom



From Unknown Sun Nov 26 04:43:40 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Ron Klein)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mosley PRO-67B - info wanted
Date: 25 Nov 1995 14:58:06 GMT
Organization: Netcom
Lines: 35
Message-ID: <497atu$[e-mail]>
References: <48jksj$[e-mail]>
NNTP-Posting-Host: ix-ftc-co1-14.ix.netcom.com
X-NETCOM-Date: Sat Nov 25  6:58:06 AM PST 1995

In <48jksj$[e-mail]> [e-mail] (Sean McCarthy)
writes:

>Hello all,
>
>Any Mosley PRO-67B users out here want to comment on how you like it?
>
>I currently have a TH7DX, and was looking for 2L on 40M to stack 10' above
>it at 85 foot, but am now thinking the 67B may be a better solution.
>
>Thanks,
>Sean

My 67B went up in September of '92 on top of my 50 foot tower here in
Colorado. I am pleased with it's performance. The front to back on 20 is
nothing to brag about, but it does well in spite of it. The mechanical
construction is designed to survive in the high wind environment of the
Colorado front range and mine has done just fine.

It went together well, once the poorly done manual was understood. And, the
customer support by telephone from Mosley was excellent - both before and
after the sale.

I would highly recommend the 67B for a good general purpose single antenna to
us on 40 through 10 including the 12 and 17 meter bands. And, it's certainly
built to last.

73,
--
Ron Klein - W0OSK
-----------------
[e-mail]





From Unknown Sun Nov 26 04:43:42 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: multiband ant. for oldtimer?
Date: 25 Nov 1995 13:27:48 GMT
Organization: The DataXchange Network, Inc
Lines: 50
Message-ID: <4975kk$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <[e-mail]>,
[e-mail] says...
>
>I have a neighbor, Kevin ZL1BKK, who is at an advanced age (obtained
his
>first class marine operator ticket in 1928) and while he can still
copy CW
>"in his sleep", he's getting to the stage where keeping his rig
(FT-101)
>safely matched to its antenna system is becoming a problem. He'd be
happy
>if he could operate on, say, 80, 40 and 20m and not have to worry
about
>clobbering his finals when he switches bands. What I'm asking for is
your
>ideas on what might be the best antenna / matcing system for him,
keeping
>in mind that he doesn't have a whole lot of money to spend here.
>
>FWIW, I thought maybe a base-loaded vertical with suitable radials and
>bandswitch may do the trick.
>
>Thanks in advance,
>Tony ZL1TTG
>
>--
>PGP fingerprint: 8D 40 36 1C 60 51 DE 2F  DA E0 A1 10 86 0D 0A E5
>
>     Make no friendship with an elephant keeper
>     unless you have room to entertain an elephant.
>                            - Saadi of Shiraz -
Wrong!  Any loaded antenna is going to defeat ur purpose!  Loaded
antennas have reduced bandwidth which is just opposite of what you are
looking for.  I suggest a multi-wire inverted-V fed from 50 ohm coax.
It is simple to build but does require a little area to cover 80/40
meters.  Cut a center fed dipole for each band and attach all dipoles
to the SAME piece of feedline.  Get the feedpoint as high as possible
and fan the dipoles out at least 3 feet apart at the ends.  You might
want to use some pvc tubing as insulators at several places to maintain
spacing.  This system will have to be pruned to get each dipole
positioned in the band where he wants to work.  On 80m he will have a
bandwidth of about 100khz 2:1 SWR, 150khz on 40m, and probably about
the entire band on 20m.  80m/40m bandwidth can be increased by
replacing part of the wire with 1/4 in aluminum tubing near the ends.
I suggest about 4 feet of tubing at the end of each leg on 40 & 80.
Also, when building the antenna use at least #12 or #10 wire for the
greatest possible bandwidth.

KG5VE [e-mail]



From Unknown Sun Nov 26 04:43:43 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!iglou!n4lq
From: [e-mail] (Steve Ellington)
Subject: Re: multiband ant. for oldtimer?
X-Nntp-Posting-Host: iglou.iglou.com
Message-ID: <[e-mail]>
Sender: [e-mail] (News Administrator)
Organization: IgLou Internet Services (1-800-436-4456)
X-Newsreader: TIN [version 1.2 PL2]
References: <[e-mail]>
Date: Sat, 25 Nov 1995 16:16:38 GMT
Lines: 7


Use a trap inverted vee. Much better than most verticals for normal
distance type qsos and no tuning required. I think B&W sells one. Don't
get their so called broad banded 1.8-30 mhz job, it's just a dummy load.
Get the trap dipole model. They work pretty well. 73
--
Steve Ellington [e-mail]  Louisville, Ky


From Unknown Sun Nov 26 04:43:43 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: multiband ant. for oldtimer?
Date: 25 Nov 1995 20:27:15 GMT
Organization: The DataXchange Network, Inc
Lines: 14
Message-ID: <497u73$[e-mail]>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: s103.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <[e-mail]>, [e-mail] says...
>
>
>Use a trap inverted vee. Much better than most verticals for normal
>distance type qsos and no tuning required. I think B&W sells one.

Again, traps are loads and they will REDUCE bandwidth.  Physically
shortened antennas will defeat what you are trying to achieve.  I have
been using the antenna that I described in my first response for years
with excellent results.

Jim Dear, KG5VE
[e-mail]



From Unknown Sun Nov 26 04:43:45 1995
Path: news.epix.net!news.sprintlink.net!connix.com!news
From: pete brunelli <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: multiband mobile
Date: 22 Nov 1995 18:50:12 GMT
Organization: Connix - The Connecticut Internet Exchange
Lines: 30
Message-ID: <48vrd4$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: pcb.connix.com
Mime-Version: 1.0
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X-Mailer: Mozilla 1.2N (Windows; I; 16bit)

[e-mail] wrote:
>
>Cause off lack off an antenna at my home QTH I have some sucsesfull
>expirence with some modified CB antenna's for mobile work.
>However band changing involkes the problem off changing the
>antennatip which means finding a parking lot.
>So I would like to modify a CB antenna to a multiband one.
>this causes some mechanical problems as a coil might be to heavy.
>
>Any suggestions please.

You could try to feed several of these modified 11-Meter whips
at the same feed point.  Make a mount with 3 antenna attachments
and ground feed it against a good ground.

it could work!

>Pascal de PA3FKM

GL OM, es Sked /M?


------------------------------------------------------------------
Pete Brunelli                             Amateur Call N1QDQ
             Check out http://www.connix.com/~pcb
            Home of the Rolling Thunder Contest Club
               Mobileering for a Better Tomorrow
------------------------------------------------------------------




From Unknown Sun Nov 26 04:43:45 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (HOUNDY1)
Newsgroups: rec.radio.amateur.antenna
Subject: Need design for 220 Mhz directional antenna
Date: 23 Nov 1995 10:30:02 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 7
Sender: [e-mail]
Message-ID: <49241r$[e-mail]>
Reply-To: [e-mail] (HOUNDY1)
NNTP-Posting-Host: newsbf02.mail.aol.com

I have tried to design this antenna, but end up with strange results.  Can
someone assist me a designing a very directional (yagi?) antenna.

I really appreciate it. E-Mail me with your winning answer. This is for an
FM wireless transmitter used in Broadcast field work.

houndy1


From Unknown Sun Nov 26 04:43:46 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Need design for 220 Mhz directional antenna
Date: 25 Nov 1995 13:32:05 GMT
Organization: The DataXchange Network, Inc
Lines: 16
Message-ID: <4975sl$[e-mail]>
References: <49241r$[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <49241r$[e-mail]>, [e-mail] says...
>
>I have tried to design this antenna, but end up with strange results.
 Can
>someone assist me a designing a very directional (yagi?) antenna.
>
>I really appreciate it. E-Mail me with your winning answer. This is
for an
>FM wireless transmitter used in Broadcast field work.
>
>houndy1
You will get excellent results using one of the NBS designs published
in the ARRL Handbook

KG5VE [e-mail]



From Unknown Sun Nov 26 04:43:47 1995
Path: news.epix.net!news.sprintlink.net!bighorn.accessnv.com!usenet
From: [e-mail] ([e-mail])
Newsgroups: rec.radio.amateur.antenna
Subject: Need Help
Date: Sat, 25 Nov 95 06:08:58 GMT
Organization: accessnv.com
Lines: 19
Message-ID: <496btq$[e-mail]>
NNTP-Posting-Host: bighorn
Keywords: Need Help: What is it worth
To: all
X-Newsreader: News Xpress Version 1.0 Beta #3

Hi!

Could anybody please tell me what following is worth:

Heathkit SSB Transceiver, Model HW-100

with Assembly Manual

somebody must have modified it or so, because on one of the two pieces (on the
large one), there is an opening cut in and on the top of the opening something
was build on it. I have no idea about this thing.
I also don't know if it works, because there is no Powercabel.

Any help would be appreciated, or if somebody is interested in it, please
make me an fair offer!

Thanks
Johanna
[e-mail]


From Unknown Sun Nov 26 04:43:48 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!usenet.seri.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!in2.uu.net!news.cais.net!wb3ffv!blkcat.blkcat.com!f41.n109.z1.fidonet.org!f42.n109.z1.fidonet.org!lastdx.blkcat.com!not-for-mail
Date: Wed, 22 Nov 1995 16:16:00 -0500
From: [e-mail] (Clayton Botkin)
Subject: Oscar AZ/EL Rotor
Message-ID: <NOMSGID_1=3A109=[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Organization: Net 109 Fidonet<->Internet gateway
Lines: 8
X-Gateway: FIDOGATE 3.9.3

Do I need to run an AC 115 volt line up to control a Yaesu 5400 AZ/EL
rotor???

I'm about to install all needed cables / hardline, but will not have
the rotor in hand until late December.

Thanks,
ke4rtm


From Unknown Sun Nov 26 04:43:49 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.westnet.com!westnet.com!rschaps
From: [e-mail] (Robert Schaps)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Oscar AZ/EL Rotor
Date: 25 Nov 1995 22:00:05 GMT
Organization: WestNet Internet Services
Lines: 32
Message-ID: <4983l5$[e-mail]>
References: <NOMSGID_1=3A109=[e-mail]>
NNTP-Posting-Host: westnet.com
X-Newsreader: TIN [version 1.2 PL2]

Clayton Botkin ([e-mail]) wrote:
: Do I need to run an AC 115 volt line up to control a Yaesu 5400 AZ/EL
: rotor???
:
: I'm about to install all needed cables / hardline, but will not have
: the rotor in hand until late December.
:
: Thanks,
: ke4rtm

--
No-  you need 2 runs of 6 conductor # 20 AWG (for up to 100 feet) for AZ
and EL.  Don't forget about mast mounted amplifiers!

73 es GUD DX!

Bob WB2NVR
______________________________________________________________________________
Robert S. Schaps                Internet:       [e-mail]
Signacon Controls, Inc.         Office Phone:   [phone] ext. 110
6 Westchester Plaza             Office Fax:     [phone]
Elmsford, NY  10523-1611
                                Amateur Radio   [e-mail]
Opinions expressed are mine,    APS             159603
and not that of my employer.
------------------------------------------------------------------------------
                        Signacon Controls, Inc.

Specialists in design, sales, installation, and service of closed circuit
television, card access control, fire alarm, parking control, traffic control,
sound, instructional technology, video imaging, intercom, and bar code systems
______________________________________________________________________________


From Unknown Sun Nov 26 04:43:50 1995
Path: news.epix.net!news.sprintlink.net!hermes.is.co.za!news.pix.za!usenet
From: Danie Brynard <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re dipole for 6m
Date: 23 Nov 1995 06:53:51 GMT
Organization: PiX - Proxima information X-change
Lines: 4
Message-ID: <4915pv$[e-mail]>
NNTP-Posting-Host: net-6.pta.pix.za
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I have a horizontal dipole for 6m. I would like to interface it to
a normal 50 Ohm coax line. What is the easiest method of
transforming the about 50R from about 70R ?



From Unknown Sun Nov 26 04:43:51 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Re dipole for 6m
Date: 25 Nov 1995 13:16:37 GMT
Organization: The DataXchange Network, Inc
Lines: 13
Message-ID: <4974vl$[e-mail]>
References: <4915pv$[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <4915pv$[e-mail]>, [e-mail] says...
>
>I have a horizontal dipole for 6m. I would like to interface it to
>a normal 50 Ohm coax line. What is the easiest method of
>transforming the about 50R from about 70R ?
>
If the figure 8 pattern is not important, and fairly omni directional
characteristics is acceptable, the easiest way to lower the feed
impedance is to slope the elements and convert the antenna to an
inverted-V.

KG5VE [e-mail]



From Unknown Sun Nov 26 04:43:52 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!tank.news.pipex.net!pipex!demon!mail2news.demon.co.uk!genesys.demon.co.uk
From: Duncan Clark <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Remote Tuning Quad Reflector
Date: Sat, 25 Nov 1995 18:32:31 GMT
Organization: GeneSys Ltd.
Lines: 29
Message-ID: <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: genesys.demon.co.uk
X-Broken-Date: Saturday, Nov 25, 1995 18.32.31
X-Newsreader: Newswin Alpha 0.7
X-SMTP-Posting-Host: genesys.demon.co.uk [Sat, 25 Nov 95 18:36:34 GMT]
X-SMTP-Posting-Host: post.demon.co.uk [Sat, 25 Nov 95 18:42:04 GMT]

Hi Folks,

I use a homebrew 4ele 5band cubical quad on 20m through to 10m. The
loop dimensions were taken straight from the Quad handbook and
although it works very well there is still a need to get a better
front to back. That may not be the case in the US but over here Europe
generates a lot of QRM off the back! The only way I can lower the
antenna (and for that matter get it up) is via tilting the mast
over which means the quad fires straight upwards and I cannot therefore
tune the reflector stub actually on a signal.

I was wondering if can I put a electrical half wavelength of say 75ohm
twin at the reflector and use a capacitor at the ground to tune it
remotely. Once I have the best setting I would then use a fixed
capacitor at the reflector itself. I would only need to do this once
for each band and hopefully problem solved. If anyone has any
other bright ideas please let me know.

Many thanks

Duncan
G4ELJ

 --
-----------------------------------------------------------------------------

A distraction is only a distraction if you pay attention to it.



From Unknown Sun Nov 26 04:43:53 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!news2.acs.oakland.edu!newshub.gmr.com!rcsuna.gmr.com!news
From: [e-mail] (Val Breault)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: rfi /light dimers
Date: 21 Nov 1995 20:48:21 GMT
Organization: General Motors R&D Center
Lines: 10
Message-ID: <[e-mail]>
References: <4817jb$[e-mail]> <[e-mail]>
        <[e-mail]>
NNTP-Posting-Host: rinhp750.gmr.com
In-reply-to: [e-mail]'s message of Sat, 11 Nov 1995 19:58:05 GMT

There are light dimmers that are much quieter than others.  I replaced
a noisy one with a Levitron unit that claimed to cause little or no
RFI.  It worked for me.


--
Val Breault [e-mail]          \      /|     ars N8OEF
GM R&D Center - instrumentation dept.  \    / |     pres GM ARC
My opinions are not necessarily those   \  /__|     HF mobile on
of GM R&D or of the GM Corporation.      \/   |___  14.200 +/-


From Unknown Sun Nov 26 04:43:54 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!cs.utexas.edu!bcm.tmc.edu!news.msfc.nasa.gov!newsfeed.internetmci.com!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: RE: RV Antenna Construction
Date: 22 Nov 95 19:43:52 GMT
Organization: ucsd usenet gateway
Lines: 26
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

>I've noticed that many RVs and homes are using amplified,
>omnidirectional TV antennas.  These are disk shaped, about 20" dia. and
>3" thick.  Radio Shack sells one for $100.00
>
>Building the amplifier is easy enough, but could someone give me
>details on the "antenna" inside?  I'd like to build one, and would
>appreciate any help.

The antennas I'm familiar with were made by RCA, now TDP, I think.
They are used on virtually every TV station Electonic Newsgathering
Vehicle (microwave truck).  The antenna has two sections.  The VHF is a
metal band mounted around the circumference of a styrofoam circle.  One
end is terminated, the other end is connected to a preamp.  I guess
it's supposed to some type of rhombic, but I'm not certain.  The UHF
portion is nothing more than a small beam pressed into the top of the
styrofoam pancake.  If I remember correctly, the UHF portion is not
amplified.  It is simply combined into the downlead at the output of
the coax.  They don't work too badly, all things considered.  I'm told
that the front end of the preamp is sensitive to strong RF.  It is
easily wiped out.  I've never experienced this, however.  The styrofoam
pancake is driven by a small gear motor, so the antenna is directional.
 The TDP version includes a schematic of the preamp.

Rick, KN3C




From Unknown Sun Nov 26 04:43:55 1995
Path: news.epix.net!news.sprintlink.net!news.azstarnet.com!usenet
From: Wes Stewart <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: static problem with my J-pole.
Date: 22 Nov 1995 03:53:21 GMT
Organization: Arizona Daily Star - AZSTARNET
Lines: 20
Message-ID: <48u6rh$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: usr6ip29.azstarnet.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
To: [e-mail]

[e-mail] wrote:
>
>I have a problem with my J-pole antenna.
>
>I ge this static sound that comes every 10 second or so and that goes away
>after 2-3 seconds.  I've tried puting a ground but nothing as changed.
>I've raised the J-pole higher but not difference...
>
>Can anybody help me?


This could be almost anything. We need more information.  What band (2m?) and mode.
It is probably not an antenna problem, but some external noise source. Does it
go away when you disconnect the antenna?  If not, that's a clue. Does it interfere
with other signals?  Is it just the sound of the squelch opening? These are the
kinds of things we need to try and help.

73, Wes -- N7WS




From Unknown Sun Nov 26 04:43:56 1995
Path: news.epix.net!news.sprintlink.net!news.heurikon.com!uwvax!uwm.edu!lll-winken.llnl.gov!enews.sgi.com!sgigate.sgi.com!olivea!sfgw!usenet
From: [e-mail] (Fabrizio MODINA)
Newsgroups: rec.radio.amateur.antenna
Subject: test
Date: 21 Nov 1995 06:32:10 GMT
Organization: OLIVETTI
Lines: 2
Message-ID: <48rrpa$[e-mail]>
NNTP-Posting-Host: hqlab172.ico.olivetti.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.2

Test mail



From Unknown Sun Nov 26 04:43:57 1995
Path: news.epix.net!news.sprintlink.net!hermes.is.co.za!news.pix.za!usenet
From: Danie Brynard <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Wanted Software for Horn Design
Date: 23 Nov 1995 06:48:55 GMT
Organization: PiX - Proxima information X-change
Lines: 4
Message-ID: <4915gn$[e-mail]>
NNTP-Posting-Host: net-6.pta.pix.za
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

I am looking for some software to design horn antennas. Could
anybody point me to a ftp or web site with some interesting stuff ?
Any pointers to commercial software would also be welcome.



From Unknown Sun Nov 26 04:43:57 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsxfer.itd.umich.edu!news.itd.umich.edu!wbecks
From: [e-mail] (William G. Becks)
Newsgroups: rec.radio.amateur.antenna
Subject: Wanted: GR-1606 A/B
Date: 23 Nov 1995 19:33:58 GMT
Organization: University of Michigan
Lines: 6
Message-ID: <492ib6$[e-mail]>
NNTP-Posting-Host: pm068-07.dialip.mich.net
X-Newsreader: News Xpress Version 1.0 Beta #4

Wanted: General Radio Model 1606 A -or- B R.F. Impedance Bridge.

Reply to: William G. Becks, KE8KB
          906-341-8088
          [e-mail]



From Unknown Sun Nov 26 04:43:59 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsjunkie.ans.net!Rezonet.net!news0.accent.net!usenet
From: [e-mail] (Marc Dufour)
Newsgroups: rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.amateur.policy,rec.radio.amateur.space,rec.radio.cb,rec.radio.noncomm,rec.radio.scanner,rec.radio.shortwave,rec.radio.swap,rec.roller-coaster,rec.running,rec.scouting,rec.scuba,rec.skiing.alpine
Subject: Re: What some think about sexy hams
Date: Sun, 26 Nov 1995 02:36:38 GMT
Organization: Is there really one?
Lines: 27
Message-ID: <498k6u$[e-mail]>
References: <[e-mail]> <47uhb8$[e-mail]> <481qu5$[e-mail]> <4825g6$[e-mail]> <487hjv$[e-mail]> <48be57$[e-mail]>
NNTP-Posting-Host: ppp-372.accent.net
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==============================================================
[e-mail] (Don Welch)
Θcrivit le - wrote on 14 Nov 1995 17:01:27 -0800:
--------------------------------------------------------------

>[e-mail] (Jim Clarke) writes:

>>I've only been an amateur radio operator for 18 years and I would have to
>(snip)
>>Don't let the bad apples spoil the excitement that can be found in amateur
>>radio, there is something there for everyone (wives/girlfriends too).

>Speaking of HAM radios, could this group help me out?  Every time I go and
>dive with my radio set, the fuse blows.  What's the trick here?

   It could have something to do with your set antenna's SWR. What does
the S-meter says just before the fuse blows?

-----------------Pour la RΘpublique Franτaise du QuΘbec-----------------
In a Republic, society should be  like school, whose prime mission is to
teach citizens how  to  judge for themselves by their own natural light.
In a democracy, it is school that must look like society, and it's prime
mission is solely to produce people adapted to the job market.
                   RΘgis Debray in "Are you a democrat or a republican?"
- Marc Dufour -- [\]ACUC 6 31874 & TDI -- http: will soon be relocated -



From Unknown Sun Nov 26 04:44:01 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!gatech!newsfeed.internetmci.com!solaris.cc.vt.edu!newsrelay.netins.net!news.netins.net!usenet
From: [e-mail]
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Subject: Re: Which HF Vertical
Date: 23 Nov 1995 01:45:52 GMT
Organization: INS Information Services, Des Moines, IA USA
Lines: 41
Message-ID: <[e-mail]>
References: <Pine.BSD/[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: ins.netins.net
Xref: news.epix.net rec.radio.amateur.equipment:21634 rec.radio.amateur.antenna:17268

In article <Pine.BSD/[e-mail]>, Kory Hamzeh <[e-mail]> writes:
>
>Hi Everyone,
>
>I'm looking for a good HF vertical for DXing. I need 10M, 20M, and 40M.
>80M would be great, but not mandatory. I've looked at the Cushcraft,
>Butternut, Hygain, Hustler. I would like to hear about your experiences
>with these antennas, how much power you where running. what band and what
>contacts where made.
>
>I know verticals are less than ideal for DXing, but nothing else is
>possible right now.
>
>Thanks,
>Kory
>KE6VWO
>
Here's my two cents worth Kory. I have run verticals since I got my license back in '71 and
they are not as bad as everyone would have you believe. (You know the old joke: a vertical
is an antenna that radiates equally poorly in all directions.) I, and a lot of other hams
have had good luck with verticals. Properly installed they can have low angle of radiation
which is good for DX. Mulitband verticals have the advantage of several bands on one coax.
And no kidding, I have worked DX stations that some of my buddies didn't because I didn't
have to adjust a rotor for a beam. (On the other hand they have beat me out of quite a few
more.)The real question for anyone who is gonna use a vertical is: can you really get a lot
of radials out? If you look at the ARRL antenna book and others you see that for a ground
mounted vertical to be reasonably effecient you have to put out a BUNCH of radials. I'm
talking like 120 of them. Less radials and the effeciency of the antenna drops considerably.
You have other options. One is mount the vertical up off the ground. This is what I did
when I lived in North Dakota. I had a 14 AVQ up on the roof with about three or four radials
per band and it worked very well. Ran a lot of QRP with it.
You can also mount shorter verticals i.e. 10-20 meters as vertical dipoles. Especially on
ten meters this is very do-able. Just build a 10 meter dipole out of some kind of metal and
stand it on it's side.
If you don't want to put out a gazillion radials for efficiency get a vertical with an
elevated feed point. This is where antennas like the GAP make sense. With a GAP and 3
watts I worked a UA on twenty meters just a couple of years ago, after the solar peak.
But they aren't perfect either. On 80 mine is pretty poor.
Anyway go out and experiment with your vertical ideas. I always like to have one as a back
up to whatever else I am using. Good luck.
de WB0FDJ


From Unknown Sun Nov 26 04:44:02 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!ihnp4.ucsd.edu!news1.ucsd.edu!news-mail-gateway
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Re:Which HF Vertical
Date: 25 Nov 95 03:09:22 GMT
Organization: ucsd usenet gateway
Lines: 28
Message-ID: <[e-mail]>
NNTP-Posting-Host: ucsd.edu
Originator: [e-mail]

In a message dated 95-11-23 02:42:14 EST, Kory wrote:

> I've looked at the Cushcraft,
>>Butternut, Hygain, Hustler. I would like to hear about your
>experiences

Kory:

I, too, had a Butternut HF-6V.  It was roof mounted on a two stroy house with
a 10' tripod.  At first I used the *stub tuned radial* kit from Butternut,
but they did not survive the first winter.  I then made 4 radials for each
band out of 12g wire.  My small lot size did not permit full size radials on
80m, but I found a company in QST that sold what they called *dipole
shorteners*.  Two pair of those got me on 80m.

It worked great, for a vertical.  Even the RARE occasion when I would pull
the mic out of the box in a drawer, I was able to break more than one pileup,
with only 100 watts.

The bandwidth on 40 and especially 80m is rather narrow.  However, I have
read of people installing motor controled capacitors to tune the antenna from
band edge to band edge.

Good Luck,
Bob
KD8WU




From Unknown Sun Nov 26 04:44:02 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!spool.mu.edu!olivea!express.ior.com!news
From: [e-mail] (Joe Pfeuffer)
Newsgroups: rec.radio.amateur.antenna
Subject: WTB R-7  Email price & condx  73
Date: 23 Nov 1995 22:09:21 GMT
Organization: Internet On-Ramp, Inc.
Lines: 2
Message-ID: <492reh$[e-mail]>
NNTP-Posting-Host: cs2-05.ior.com
Mime-Version: 1.0
Content-Type: Text/Plain; charset=ISO-8859-1
X-Newsreader: WinVN 0.99.5





From Unknown Thu Nov 30 12:10:37 1995
Path: news.epix.net!news.sprintlink.net!worldlinx.com!onlink3.onlink.net!usenet
From: [e-mail] (kgsmith)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 160 vertical vs Inverted Vee - What say
Date: Wed, 29 Nov 1995 16:13:42 GMT
Organization: Ontario Northland--ONLink
Lines: 49
Message-ID: <49i0cr$[e-mail]>
References: <[e-mail]> <47laqd$[e-mail]>
NNTP-Posting-Host: nrba2_onlink16.onlink.net
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] () wrote:

>>Station is located 200 above salt water with sharp slope to water in B.C.
>>Canada.
>>
>>Last year used Inverted Vee at 120 feet.
>>This summer put up 135 foot vertical with one elevated radial.

>Hi Bill,

>Acording to some articles in our Ham-mag based on practical
>comparisions as well as simulations a inverted vee 1/4 wl
>up will normally beat a vertical quarterwave. *But* the vertical should be
>clearly superior, if two conditions are met:

>1. Ground conduction is good, i.e. you are at the sea shore.
>   so here you are OK.
>2. The vertal has a good ground plane. By the looks of it you are on the
>   safe side with a very large number of radials lying on the ground,
>   which sounds awkward on 160. As to the elevated radials, there is not
>   really a lot of evidence that they actually do work better than ground
>   mounted ones.

>This all referrs to the signal strength, on reception verticals
>are reported to have a poor noise performance.

>BTW, I am also interested in other's opinions/experience with the question
>of a 1/4 wl vertical vs. inverted vee or delta loop with the apex 1/4 wl up.

>73, Moritz DL5UH

Bill
I just finished the cqww cw using a couple of 80 mtr antennas and can
offer these observations. I have a 3 el wire beam for 80 at 70 ft. and
a 70 foot tower with 20/40 yagi on top which is gamma fed for 80.
during the contest the vertical consistantly outperformed the wire
beam, which I wasn't sure as to why. I had noticed during the cqww ssb
that the wire beam was better. After the contest I modelled the beam
at its design freq of 3.79 mhz and at 3.55 mhz. on cw the beam lost
all directivity and gain, and was almost the same as a simple inverted
V. So I think that the vertical would be better than an inverted V for
the long haul stuff. The vertical has 12 radials 130 ft. long on the
ground.
Hope this confuses things

Ken VA3SK





From Unknown Thu Nov 30 12:10:38 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!nntp.crl.com!newshub.cts.com!usenet
From: Dave Perkins <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: 40-Meters on a Rainy Day...??
Date: 27 Nov 1995 05:42:49 GMT
Organization: CTS Network Services
Lines: 5
Message-ID: <49bj4p$[e-mail]>
NNTP-Posting-Host: davep.cts.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

  Ive got a longwire dipole outside on the roof...Is it ok to operate
while its raining or while its foggy..??

  Dave in San Diego-KC6ZBE



From Unknown Thu Nov 30 12:10:38 1995
Path: news.epix.net!news.sprintlink.net!castle.nando.net!news
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 40-Meters on a Rainy Day...??
Date: 28 Nov 1995 00:43:59 GMT
Organization: News & Observer Public Access
Lines: 6
Message-ID: <49dm0f$[e-mail]>
References: <49bj4p$[e-mail]>
NNTP-Posting-Host: grail714.nando.net
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

I've never had a problem operating on a dipole when it was rainy or
foggy. You might monitor your SWR just to see what it does when the
antenna is wet.

73 de Dave WB4IUY



From Unknown Thu Nov 30 12:10:40 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!uwm.edu!caen!kuhub.cc.ukans.edu!avalon.chinalake.navy.mil!usenet
Newsgroups: rec.radio.amateur.antenna
Subject: 6 meter mobil with gain?
Message-ID: <[e-mail]>
From: Bill Harwood <[e-mail]>
Date: Thu, 30 Nov 1995 01:44:04 GMT
Sender: [e-mail] (NAWS news admin)
References: <[e-mail]>
Organization: NAWS, China Lake, CA
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
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Lines: 25

I am looking for a six meter antenna with some gain.  I have a pretty
good 1/4 wave vertical solution (standard California larsen 2 meter 5/8
wave trimmed to 6 meters).  A top or center loaded 5/8 wave or 1/4 over
1/4 is the type solution I would like.

1.  Does anyone knoe of a commercial built antenna for 6 meters which
has gain over a 1/4 wave?

2.  Has anyone successfully built a six meter mobile from a CB whip and
coaxial matching sections.  If so could you pass on the instructions.
My theoretical one did not work well.

3.  How about a six meter match box that would handle the CB whip.

Thanks,

  \------------------------------------------------------/
   \  Bill Harwood           U play it, I'll dance it   /
    \ AB6DY                         or                 /
     \                      I'll play it, U dance it  /
      \----------------------------------------------/






From Unknown Thu Nov 30 12:10:41 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!sdd.hp.com!hp-pcd!news1.boi.hp.com!news
From: dave eckhardt <[e-mail]>
Subject: Re: 70cm Helix Question....HELP!
Sender: [e-mail] (Boise Site News Server)
Message-ID: <[e-mail]>
Date: Mon, 27 Nov 1995 20:26:44 GMT
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=us-ascii
References: <49clkg$[e-mail]>
Nntp-Posting-Host: hpgreck.gr.hp.com
Mime-Version: 1.0
X-Mailer: Mozilla 1.2N (Windows; I; 16bit)
Organization: Hewlett-Packard / Boise, Idaho
Lines: 28

Yes, the helix ideally has a whole number multiple of turns.  However,
what you are describing will only have a minor  effect on gain.  The
feed impedance of a helix in nominally 90 to 100 ohms, giving roughly a
2:1 SWR to 50 0hm caoxial feedlind.  There are two easy methods I have
used to match a helix to 50-ohm line:
     1) Use a 1/4 wavelength matching line section
     2) Use a tapered line section

1/4 wavelength (in the line) of 71-ohm cable inserted in series between
the bottom of the helix and the 50-ohm line works nicely.  You have a
couple of choices as to the line type to use.  Standard 73-ohm CATV foam
coas works nicely.  The velocity constant of this line is nearly unity
(about 0.94), so a free-space 1/4 is close.

The other line option is to take advantage of the back-plane of the
helix.  You can do a 1/4 wavelength of 71-ohm line in air microstrip.
Using the helix backplane as the return ("ground") of this line, just use
standard microstrip equations for the width (I think about 0.100" width
in air is close) and cut it 1/4 free space wavelengths  long.

The last option is to use a one free space wavelength of
linearly tapered microstrip.  You can taper both spacing and linewidth
to finetune the final match to 50 ohms.  This is ultimately the easiest
to adjust in practice because you have two degrees of freedon to adjust.

     Dave W6LEV
     [e-mail]



From Unknown Thu Nov 30 12:10:42 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Garth Klatt <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 70cm Helix Question....HELP!
Date: 30 Nov 1995 05:42:25 GMT
Organization: CompuServe, Inc. (1-800-689-0736)
Lines: 18
Message-ID: <49jg81$g80$[e-mail]>
References: <49clkg$[e-mail]>

David,

Don;t worry about being 1/2 turn short. All this will do is very
slightly affect the gain and raise the oprimum operating
frequency a bit. Helicals are very broad band so you should be
OK.  Tuning is done at the feed point only.  The easiest way is
to let the last turn simple approach the ground plane and secure
it with a feed-thru when it is almost touching. This provides a
taper match to 50 Ohms. The exact final spacing is fairly
critical but there's a formula and method somewhere in the book.
An even better way is to solder a gradually widening metal strip
to the end of the last turn and use that for setting the
terminating impedance.  I have mine rigged with a nylon
thumbscrew for precise accuracy.  If you don't have the info you
need to do this, E-mail me and i'll send some notes.

Regards,
GK.


From Unknown Thu Nov 30 12:10:43 1995
Path: news.epix.net!news.sprintlink.net!newsat!engineer.mrg.uswest.com!news.uoregon.edu!newsfeed.internetmci.com!in2.uu.net!news.micron.net!cs021p12.boi.micron.net!user
From: [e-mail] (Russ Ellsworth)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Advice on radials sought
Date: Tue, 28 Nov 1995 20:08:32 -0700
Organization: Alster Communications
Lines: 21
Message-ID: <[e-mail]>
References: <[e-mail]> <491qio$[e-mail]>
NNTP-Posting-Host: cs021p12.boi.micron.net

snip....
> (based on NEC models) that claims four elevated radials are sufficent or
> equal to 120 radials on the ground. Two commercial broadcast station
> proofs and my own measurements indicate four elevated radials are 5 to 7
> dB down from 120 radials on the surface of the ground.
>
Tom, this sounds pretty good as evidence that the elevated radial theory
is pretty well justified.  If I can put up 4 radials and come within one s
unit of 120 radials, I will do it every time. My experience is that when
adding radials, one can add until the feed point impedance doesn't show
much change with the latest addition. Doing that with a ground mounted
vertical starting at say four radials, there is a definite change as the
radiation resistance becomes a larger part of the total imput
impedance..i.e. the ground loss is going down. On the other hand, adding
elevated radials above four, the change in impedance is much less dramatic
with each addition. I've always felt that would be not a bad way to look
at the overall payoff of effort/money vs. added performance. My inverted L
on (75 ft vertical..140 ft horizontal) 160/75 with 16 elevated radials at
abt 12 feet works very well indeed. Of course the backyard looks like a
giant spider lives here!!
Regards, Russ WA6CWV, Boise Idaho


From Unknown Thu Nov 30 12:10:44 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!usenet.seri.re.kr!news.dacom.co.kr!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Advice on radials sought
Date: 29 Nov 1995 09:55:51 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 60
Sender: [e-mail]
Message-ID: <49hs9n$[e-mail]>
References: <[e-mail]>
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>Should I either 1) use metal pipe for my sprinkler system and/or 2) bury
>wire along with the sprinkler system -- in order get more coverage?  The
>sprinkler lines appear to be about 10-15 ft apart.  Also, should I tie in
>the pool (& use salt-water :-) ?

Do as much as you can, esp near the antenna feedpoint! I would fill the
pool with swimsuit models, they have great conductivity!

In a message dated 95-11-28 22:08:29 EST, you write:

>>
>Tom, this sounds pretty good as evidence that the elevated radial theory
>is pretty well justified.  If I can put up 4 radials and come within one
s
>unit of 120 radials, I will do it every time.

Actually that's much closer to two S units, by common "standards" of rigs
today! No radio (and hence operator) uses the 5 dB per S unit value
suggested as a "standard" years ago, it makes the receiver look bad, hi.
But your idea has merit. If 5dB loss doesn't affect your desired
operation, it isn't worth the effort.

Also remember.... the 5dB loss value is for a full size quarter wave. The
loss increases quickly as the radiator is shortened or folded over. There
aren't any "tricks" that will negate this rule (suck as a folded
monopole), despite what some authors profess.

>My experience is that when
>adding radials, one can add until the feed point impedance doesn't show
>much change with the latest addition. Doing that with a ground mounted
>vertical starting at say four radials, there is a definite change as the
>radiation resistance becomes a larger part of the total imput
>impedance..i.e. the ground loss is going down. On the other hand, adding
>elevated radials above four, the change in impedance is much less
dramatic
>with each addition. I've always felt that would be not a bad way to look
>at the overall payoff of effort/money vs. added performance.

That's a good idea, but don't forget losses come in two forms. The direct
connection loss (directly related to base impedance) and field induced
losses. You are primarily measuring only one form with direct as opposed
to FS measurements.

> My inverted L
>on (75 ft vertical..140 ft horizontal) 160/75 with 16 elevated radials at
>abt 12 feet works very well indeed. Of course the backyard looks like a
>giant spider lives here!!

Ham antennas are esoteric, aren't they! ;-) We often go by feel more than
science!

Actually, data with 16 radials and a quarter wave (un-bent) radiator was
within a few dB of a 60 radial system. I suspect your system should work
pretty well with 16 wires. My points are: 1.) four just aren't enough...
2.) four do NOT come close to equaling 120....3.) elevating makes no real
difference when more than a dozen wires are used... 4.) Loss problems are
increased with shortened radiators.

73 Tom


From Unknown Thu Nov 30 12:10:45 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!bloom-beacon.mit.edu!hookup!gatech!newsfeed.internetmci.com!uwm.edu!homer.alpha.net!news.jersey.net!ns2.mainstreet.net!bug.rahul.net!a2i!news.erinet.com!ragnarok.oar.net!malgudi.oar.net!news.rcinet.com!sally.dma.org!millersg
From: [e-mail] (Steve Miller)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Advice on radials sought
Date: 30 Nov 1995 02:24:33 GMT
Organization: Dayton Microcomputer Association; Dayton, Ohio, USA
Lines: 24
Message-ID: <49j4l1$[e-mail]>
References: <[e-mail]> <491qio$[e-mail]> <[e-mail]>
NNTP-Posting-Host: dmapub.dma.org

In article <[e-mail]>,
Russ Ellsworth <[e-mail]> wrote:
>snip....
>> (based on NEC models) that claims four elevated radials are sufficent or
>> equal to 120 radials on the ground. Two commercial broadcast station
>> proofs and my own measurements indicate four elevated radials are 5 to 7
>> dB down from 120 radials on the surface of the ground.
>>
>Tom, this sounds pretty good as evidence that the elevated radial theory
>is pretty well justified.  If I can put up 4 radials and come within one s
>unit of 120 radials, I will do it every time.

Really, 5 to 7 dB is an awful lot to give up. I certainly wouldn't want a
-7 dB efficiency on my transmit/receive capability, nor the power I
purchase from the utility company. Also, a 5 to 7 dB difference is not
'justified', it is poor agreement between model and measurement and
unacceptable by professional standards.



--
Steve Miller
[e-mail]
WD8IXE - Ridin' the aethereal waves


From Unknown Thu Nov 30 12:10:46 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!chi-news.cic.net!usc!sdd.hp.com!hp-pcd!news1.boi.hp.com!news
From: dave eckhardt <[e-mail]>
Subject: Re: Antenna design wanted
Sender: [e-mail] (Boise Site News Server)
Message-ID: <[e-mail]>
Date: Mon, 27 Nov 1995 19:59:23 GMT
Content-Transfer-Encoding: 7bit
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Organization: Hewlett-Packard / Boise, Idaho
Lines: 3

Any of the 10-meter designs given in the ARRL Handbook or Antenna
Manual can be easily scaled to the CB band.



From Unknown Thu Nov 30 12:10:47 1995
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From: [e-mail] (KG7FU)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: antenna switch reactance
Date: Wed, 29 Nov 1995 00:57:40 GMT
Organization: Seiko Communications Systems, Inc.
Lines: 36
Message-ID: <49gb54$[e-mail]>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: kaplan.seikotsi.com
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Paul Erickson) wrote:

>I am in the process of doing some antenna comparisons and in order
>to speed up antenna changes I built a switch in a small metal box
>a ceramic rotary switch and 4 bnc connectors. As is probably not
>suprising, the switch introduces enough reactance to necessitate
>altering the settings on the seperate tuners for each antenna from
>their settings if used alone for a given frequency. Should I attempt
>to tune out the reactance, or should I leave well enough alone and
>simply adjust the individual tuners as necessary to compensate?

>Thanks in advance.

>cheers, Paul
>VE7CQK
>email: [e-mail]

Unless you're working with VHF and above frequencies your switch
should have negligeable reactances present. Make sure that the UNUSED
ports of your switch are grounded while making your measurements. What
may be occurring is parasitic reactance (capacitively coupled) due to
the proximity of your other feedlines. Test your switch by connecting
a 50 Ohm resistor to all the ports and one by one replace 50 Ohms with
another value, such as 200 Ohms and note the results. If you are
working with VHF and above you may be aboe to get away with simple T
networks at the switch common point as the components are relatively
small.

gl de KG7FU

"YOU kill what YOU fear and YOU fear what YOU don't understand"

[e-mail]
[e-mail]
[e-mail]



From Unknown Thu Nov 30 12:10:48 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!psgrain!nntp.teleport.com!usenet
From: [e-mail] (Roy Lewallen)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Antenna Theory references ??
Date: 30 Nov 1995 04:57:03 GMT
Organization: ELNEC/EZNEC Software
Lines: 16
Message-ID: <49jdiv$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: ip-pdx15-31.teleport.com
X-Newsreader: SPRY News 3.03 (SPRY, Inc.)

>   [e-mail] (Bart Rowlett) writes:
>  In article <hbaker-1111951457300001@10.0.2.15>,
>  Henry Baker <[e-mail]> wrote:

[Much very good info deleted]

>  >Does anyone have any recommendations about good books to read which explain
>  >things at this level of generality & technical detail?

I'd like to add to Bart's list

_Antenna Handbook_ by Lo & Lee. It's very thorough and has an excellent mix of theory and
application information.

Roy Lewallen, W7EL



From Unknown Thu Nov 30 12:10:49 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (Ken KD1XS)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Anybody Use W9INN Antennas ?
Date: 27 Nov 1995 07:26:09 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 9
Sender: [e-mail]
Message-ID: <49cap1$[e-mail]>
References: <493djo$[e-mail]>
Reply-To: [e-mail] (Ken KD1XS)
NNTP-Posting-Host: newsbf02.mail.aol.com

Steve:

I have one of W9INN's dipole.  High quality construction throughout.  Bill
is very helpfull in helping you choose the right antenna.  He sets it up
for your frequencies.

I would not hesitate to buy another.

Ken KD1XS


From Unknown Thu Nov 30 12:10:50 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!news.ssd.intel.com!news.jf.intel.com!news
From: Douglas Braun <dbraun>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.antenna
Subject: Anyone know a source for Yagi antenna parts
Date: 29 Nov 1995 17:51:13 GMT
Organization: Intel Corp., Hillsboro, OR
Lines: 9
Message-ID: <49i6ih$[e-mail]>
NNTP-Posting-Host: dtthp166.jf.intel.com
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X-URL: news:rec.radio.amateur.homebrew
Xref: news.epix.net rec.radio.amateur.homebrew:11803 rec.radio.amateur.antenna:17387

I want to find a source for element-to-boom fittings so
I can build some 2-Meter and 70-cm yagi antennas.  Is there
any place or person that sells these? (I can get plenty of Aluminum
tubing without any problem...)

Thanks,

Doug Braun (SV/N1OWU)



From Unknown Thu Nov 30 12:10:51 1995
Path: news.epix.net!news.sprintlink.net!castle.nando.net!news
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Autotuner vs. trap dipole
Date: 26 Nov 1995 13:46:00 GMT
Organization: News & Observer Public Access
Lines: 42
Message-ID: <499r2o$[e-mail]>
References: <498o45$[e-mail]>
NNTP-Posting-Host: grail1110.nando.net
Mime-Version: 1.0
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>I upgraded my antenna this weekend from a G5RV to a 5-band 105'
>trap dipole which supposedly covers 80, 40, 20, 15 and 10 without
>a tuner.  I have the apex up 35', ends up 15', using a metal mast
>for a support, keeping 6" between feedpoint and mast.  The ends

<snip>

>The instructions that came with the trap
>dipole says that in case of high SWR to iadd a 12' jumper in the
>coax and cut off 1-2 feet at a time until SWR drops.  Is there
>a way I can get the trap dipole to work as promised with an
>autotuner, or should I start consideringother antenna styles
>to use with the autotuner?  These wire experiments are getting
>to be discouraging.  Thanks.  --Bill KB8USZ [e-mail]

Hi Bill! There is a simple parallel dipole design that I have been using
for years that is reasonant, requires no tuner, but does require a little
pruning and space. I heard it called a maypole years ago, and it does
look like those maypoles seen in schoolyards of days gone by. It's
basically several dipoles fed from the same feedpoint, with wach dipole
pulled off in dirrerent directions. I've built them for all hf bands
inlcuding 6. Cut dipoles for the bottom of bands you desire and attach
them to the same feedpoint. Wind 8-10 turns of feedline into a coil about
6" dia at the feedpoint for a current choke to keep RF off of the
feedline's shield. Tune the lowest dipole to resonance first, then the
next lowest, etc...tune the highest band last. There is a little
interaction between dipoles, but you will tune that out. On 40, I've
found it hard to get the feedpoint impedance to 50 ohms, but you can vary
the angle of the dipole to correct for that (pulling the ends down always
seems to do the trick).


The 2:1 bandwidth is as good or better than that of a single dipole.
Bandswitching is automatic, since the nonresonant dipoles present a high
impedance to the feedpoint. I have hung this array underneath each other,
with the lowest band on top, but have found the 2:1 bandwidth to be
compromised if there is less than 3" between the dipoles.

Just my $.02. Good luck in finding an antenna design for your station.
73 de Dave WB4IUY




From Unknown Thu Nov 30 12:10:52 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Autotuner vs. trap dipole
Date: 26 Nov 1995 14:42:39 GMT
Organization: The DataXchange Network, Inc
Lines: 28
Message-ID: <499ucv$[e-mail]>
References: <498o45$[e-mail]> <499r2o$[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4


>
>The 2:1 bandwidth is as good or better than that of a single dipole.
>Bandswitching is automatic, since the nonresonant dipoles present a
high
>impedance to the feedpoint. I have hung this array underneath each
other,
>with the lowest band on top, but have found the 2:1 bandwidth to be
>compromised if there is less than 3" between the dipoles.
>
>Just my $.02. Good luck in finding an antenna design for your station.
>73 de Dave WB4IUY
>
>
Ditto on WB4IUY comments...but, I have found that putting all the wires
under each other in the same planes seems to slightly widen the
bandwidth.  No other adverse effects noticed.  Use 1/2" PVC pipe as
spacers between the wires to keep their distance apart constant or your
SWR will vary when the wind blows.  Also, another advantage is that you
only have to have 2 points to tie the ends off and a mast/tree/tower to
support the feedpoint.  I use a section of 1" square aluminum tubing as
a side mount on a 55 ft. tower to support the feedpoint.  Attach a $2
pulley and some rope and you can quickly and easily raise and lower the
entire antenna system for pruning!

Jim Dear,KG5VE
[e-mail]



From Unknown Thu Nov 30 12:10:53 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (LORMARSCO1)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Autotuner vs. trap dipole
Date: 26 Nov 1995 22:57:57 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 14
Sender: [e-mail]
Message-ID: <49bd05$[e-mail]>
References: <499r2o$[e-mail]>
Reply-To: [e-mail] (LORMARSCO1)
NNTP-Posting-Host: newsbf02.mail.aol.com

Good luck on trying to get the trap dipole to work correctly.  Tuning the
various sections can be a nightmare and the resulting losses associated
with the traps can be discouraging.  As the prior ham stated the maypole
dipole may be much easier to tune than the trap dipole and actually save
some power because there are no losses associates with the traps.

For years I have thrown the coax, traps, and antenna pruning out the door
and have used tuners with ladder line.  Negligable line losses even at
very high antenna SWR and I always have 1:1 at the amplifier.

Study the ARRL antenna guide and you will find a wealth of knowledge on
simple antennas that work.  Good luck.

WBOHNS.


From Unknown Thu Nov 30 12:10:54 1995
Date: 27 Nov 1995 14:16:00 EDT
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!hookup!noc.tor.hookup.net!ve3ied!gts!feline!humnet.humberc.on.ca!hduff
Newsgroups: rec.radio.amateur.antenna
From: [e-mail] (Hugh Duff)
Message-ID: <[e-mail]>
Organization: HumberNet LSS, Humber College, Canada
References: <4974o8$[e-mail]>
Subject: Re: Beacon antenna for 1296
Lines: 35


> In article <4915lj$[e-mail]>, [e-mail] says...
> >
> >I am looking for ideas for an antenna for 1296MHz for a beacon for
> >test purposes. The antenna must be omni directional and
> >horizontally polarized. It must be relatively easy to build it ie
> >from description say sent via Internet.
> >
> There is a simple antenna called the Alford Slot...basically it is a
> verticle piece of tubing with a quarter-wave slot cut parrallel with
> the tubing.  It is then fed with 50 ohm coax on the top end.  I am at
> work and don't have the design info with me right now but I'll try to
> get u some dimensions/formulas to work with.  I might can even scan the
> pictures as jpg for u to clear up any unknowns in its design.
>
> 73 KG5VE [e-mail]
>


I hope it is as simple as you suggest.  I've had several people tell me
how "simple" it is but nobody can provide me DETAILS on constructing
one. I've had quick "lunch-napkin descriptions" of it but never enough
info to actually build one. I understand that it uses a series of
phased coax within the antenna tubing too !?
I built a 1296 beacon that needs a decent horizontal-omni antenna.
This would really fill the bill.  I'd also appreciate more info if you
have it. I'll gladly reimburse your photocopying and postage fees if
you could kindly send the info to me.

Regards..Hugh Duff  VA3TO  Toronto



---
 ■ NFX v1.3 [000]


From Unknown Thu Nov 30 12:10:56 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!simtel!nntp.coast.net!harbinger.cc.monash.edu.au!news.mel.connect.com.au!news.syd.connect.com.au!news.bri.connect.com.au!exchange.datanet.net.au!troll.apana.org.au!quux.apana.org.au!not-for-mail
From: [e-mail] (Paul love)
Newsgroups: rec.radio.amateur.antenna
Subject: CTW Antenna
Date: 28 Nov 1995 18:52:10 +1000
Organization: quux -- APANA Redcliffe
Lines: 34
Distribution: world
Message-ID: <49eijq$[e-mail]>
NNTP-Posting-Host: quux.apana.org.au
X-Newsreader: TIN [version 1.2 PL2]


Greetings All,
Well in my quest for a handy small block antenna ( particularly for 40 metres)
, refer to my previous posts regarding the folded marconi vertical( which I
have abandonned). Now there is another interesting contender , very much a
comprise antenna that would probably upset the purists in this news group.
An article appeared in the June'95 edition of Amateur Radio magazine about
what the author called a CTW vertical multiband antenna. It is as follows:
a telescoping of 2 x 6metres of alumina tube , making antenna lenght 12 metres
mounted on a wooden post , 1 1/2 metre above the ground. It is feed through
a 4>1 balun, with an insulated wire traveling up the centre of the tubing to
the top, where it is connected. Like a lot of articles on antennas this one
was pretty "thin" on facts, but it's potential for suburban hams, without the
space to pursue the "ideal" looked liked it deserved further investigation.
You apparently have to also use an antenna tuner , but all band coverage is
claimed. Given the length I thought that it would have to radiate *ok* on
bands down to 40 metres anyway.

I not so much had myself in mind for this antenna , but the amateur who lives
on a tiny block of suburban dirt, ( even townhouse's with small yard ). Claims
of NO TVI ! problems were also made in the article, of course this can only be
as good as any one particle location and installation. The lack of any radials
or counterpoises made it a realistic possiblity , allowing amateurs who have
almost zero ground space to get on the air on most bands. The height could of
course be a drawback in some locations ( you could always hang a flag on it !)

Any input from users of this type of antenna would be interesting, and of
course theoretical discussion is always stimulating.
=============================================================================
* vk4xd@vk4itm.#bne.qld.aus.oc            MEMBER : Redcliffe Radio Club Inc.*
* vk4xd.ampr.org                                 : Qld. Digital Group       *
* IP [ 44.136.138.118 ]                   E-Mail :[e-mail]   *
*             -*****  FRIENDSHIP   THROUGH   RADIO  *****-                  *
=============================================================================


From Unknown Thu Nov 30 12:10:57 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!bloom-beacon.mit.edu!newsfeed.internetmci.com!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (Bob Raymond)
Newsgroups: rec.radio.amateur.antenna
Subject: DXtreme Amateur Radio Station Log System V2.0
Date: 28 Nov 1995 23:37:42 GMT
Organization: DXtreme Software
Lines: 17
Message-ID: <49g6g6$[e-mail]>
NNTP-Posting-Host: ix-nas-nh1-09.ix.netcom.com
X-NETCOM-Date: Tue Nov 28  3:37:42 PM PST 1995
X-Newsreader: WinVN 0.92.6

DXtreme Amateur Radio Station Log System(TM) Version 2.0

Designed for HF DXers, this affordable logging program lets you maintain
a database of your contacts and track the DXCC performance of your station.
DXtreme(TM) features attractive, easy-to-use screens, and a full range of
inquiries and reports.

PC/AT-compatibles, MS-DOS 5.0+.  Only $29.95 plus $3.00 shipping in NA.
Write for data sheet:

DXtreme Software
26 Langholm Drive, Nashua, NH 03062
Internet: [e-mail]

Thanks and 73,

Bob Raymond, NE1I


From Unknown Thu Nov 30 12:10:58 1995
Path: news.epix.net!news.sprintlink.net!news.azstarnet.com!usenet
From: Wes Stewart <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: ELNEC/EZNEC: Need help in modeling ground
Date: 27 Nov 1995 13:50:11 GMT
Organization: Arizona Daily Star - AZSTARNET
Lines: 10
Message-ID: <49cfmj$[e-mail]>
References: <[e-mail]> <48ukvu$[e-mail]> <48vou6$[e-mail]> <49bol6$[e-mail]>
NNTP-Posting-Host: usr6ip33.azstarnet.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
To: [e-mail]

[e-mail] (Peter Gerba) wrote:
>Well Wes;
>
[snip]

>Maybe I misunderstood your remark ?
>

Apparently.



From Unknown Thu Nov 30 12:10:59 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!nntp.crl.com!crl4.crl.com!not-for-mail
From: [e-mail] (Peter Gerba)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: ELNEC/EZNEC: Need help in modeling ground
Date: 27 Nov 1995 08:46:16 -0800
Organization: CRL Dialup Internet Access        [phone]  [Login: guest]
Lines: 18
Message-ID: <49cq0o$[e-mail]>
References: <[e-mail]> <48ukvu$[e-mail]> <48vou6$[e-mail]> <49bol6$[e-mail]> <49cfmj$[e-mail]>
NNTP-Posting-Host: crl4.crl.com
X-Newsreader: TIN [version 1.2 PL2]

Please accept my apology.

pete, kn6bi
[e-mail]



Wes Stewart ([e-mail]) wrote:
: [e-mail] (Peter Gerba) wrote:
: >Well Wes;
: >
: [snip]

: >Maybe I misunderstood your remark ?
: >

: Apparently.



From Unknown Thu Nov 30 12:10:59 1995
Path: news.epix.net!news.sprintlink.net!nwnews.wa.com!uw-coco!uw-beaver!cornellcs!newsstand.cit.cornell.edu!news.kei.com!newsfeed.internetmci.com!swrinde!sdd.hp.com!col.hp.com!news.dtc.hp.com!hpscit.sc.hp.com!rkarlqu
From: [e-mail] (Richard Karlquist)
Newsgroups: rec.radio.amateur.antenna
Subject: Ferrite rod antenna bibliography
Date: 28 Nov 1995 04:43:49 GMT
Organization: Hewlett-Packard
Lines: 24
Message-ID: <49e425$[e-mail]>
NNTP-Posting-Host: hpscrj.scd.hp.com


Someone had posted last week looking for info on
ferrite rod antennas for pagers.  Here is a terse
bibliography of the articles I have collected so
far.  Hope this helps.



            FERRITE ANTENNA BIBLIOGRAPHY:

1.  Philips Technical Review, V24, P332, 1962
2.  IEEE Trans. Inst. Meas. March 77, p25
3.  Tele-tech & Electronic Industries, Feb. 1955, p 84
4.  Elec. Industries, March 1958, p66
5.  IEEE Trans. Ant. Prop. Nov. 1980, p 904
6.  RadioCommunication, Sept. 1991, p51; April 1989, p. 48
     Nov. 1982 p 944, Nov. 1991, p 29, Feb. 1991, p 38
7.  Wireless World, Sept. 1977, p47, Sept. 91, p 736
8.  QST, April 88, p22
9.  Demaw, Ferromagnetic Core Design & Application Handbook,
p 39-63.


Rick N6RK


From Unknown Thu Nov 30 12:11:01 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!noc.near.net!usenet.continental.com!usenet
From: Paul Christensen <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: GAP DX-VI 80 m Performance
Date: 28 Nov 1995 16:58:46 GMT
Organization: Continental Cablevision
Lines: 15
Message-ID: <49ff46$[e-mail]>
References: <[e-mail]>
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To: [e-mail]

In all fairness to GAP, when you indicate 10-15 dB below a dipole at 60'
are you refering to DX stations with low-angle incoming signals, or
local/regional contacts where the majority of signal is received with
NVIS propagation?

I would expect your dipole to be vastlt superior to the GAP on local
contacts.  The radiation pattern for this antenna, like all vertical
antennas is a major lobe at long angles with very little radiation
(received or transmitted) at angles above 30-40 degrees.

Perhaps Roy, W7EL can jump in and tell us more about the exact numbers
with comparisons of 1/4 wave and 1/2 wave vertical radiators.

-Paul



From Unknown Thu Nov 30 12:11:01 1995
Path: news.epix.net!lwbyppp124.epix.net!user
From: [e-mail] (Steve Anderson)
Newsgroups: rec.radio.amateur.antenna
Subject: Help - Does this antenna exist?
Date: Wed, 29 Nov 1995 10:23:29 -0500
Organization: epix.net
Lines: 20
Message-ID: <[e-mail]>
NNTP-Posting-Host: lwbyppp124.epix.net

If this is a dumb question, please forgive my ignorence as I'm not an
amateur radio/antenna buff. That said, does fixed position antenna exist
that can very
accurately identify:
1) the direction*, and/or (*this type is of primary interest)
2) the signal strength, and/or
3) time of signal arrival
of a spread spectrum 902MHz-928MHz signal? The signal would be low watt
and generated within 1-1 1/2 miles of the antenna. If not at these
variables (MHz/wattage, etc.) at what others might something be available?

Please reply directly via email to:
[e-mail]
Thanks in advance.

Steve Anderson
[e-mail]

Steve Anderson
[e-mail]


From Unknown Thu Nov 30 12:11:02 1995
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From: [e-mail] (Michael Donohue)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Butternut HF6V
Date: 26 Nov 1995 13:11:20 GMT
Organization: IGS - Information Gateway Services
Lines: 18
Message-ID: <499p1o$[e-mail]>
References: <[e-mail]> <48iaak$[e-mail]>
NNTP-Posting-Host: mdonohue.renc.igs.net
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In article <48iaak$[e-mail]>, [e-mail] says...
>
>Charles D. Lowery ([e-mail]) wrote:
>: A friend bought a Butternut HF6V antenna at a hamfest that was
>: missing the 75 ohm matching section from the feedline
>: connection.  Any one care to help with the length of the RG-11
>: so we can get him on the air the SWR is horrible now.
>: Thanks Chuck AB4YR

  It all depends on whether you have the counterpoise kit or not:

  With counterpoise kit the length is 33' with PL-259 on both ends.

  Without the Counterpoise kit the length is 11' with a PL-259 on
  one end and solder lugs on the other.

  73 De Michael VE3DMJ



From Unknown Thu Nov 30 12:11:05 1995
Path: news.epix.net!news.sprintlink.net!hookup!usenet.eel.ufl.edu!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help needed - Quarter Wave Sloper.
Date: 28 Nov 1995 02:01:04 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 40
Sender: [e-mail]
Message-ID: <49ec3g$[e-mail]>
References: <49cmdc$[e-mail]>
X-Newsreader: AOL Offline Reader

Hi Terry,
In article <49cmdc$[e-mail]>, [e-mail] (Terry
Hubbard) writes:

>I am trying to install a temporary quarter wave sloper. I have a 60 foot
>tower with a sloper for 40 and 80 meters that is bracketed to the tower
>which is the counterpoise for these two permanent antennas. The temporary

>antenna for 80 meters is pulled up the tower via a rope and pulley and is

>not bracketed to the tower. For the ground I used 8 guage solid copper
>dropped to the ground and bonded to the bottom of the tower which is
>connected to a radial system.

A long ground lead is not a ground at all for RF Terry. If the tower is 60
ft tall, and the ground lead is the same, it is actually an very high
impedance at the sloper!

It would actually be a better "ground" if you disconnected the ground lead
and it completely floated in air except for the connection at the sloper.
The impedance inverts every 1/4 wl., so a low Z at one end becomes a high
Z at the other.

> I think the problem has to do somehow with
>the fact that there are 2 grounded elements in close proximity they being

>the tower and the ground leed from the temporary antenna although the
>permanent antennas were unaffected by the temporary antenna. Is it
>necessary to somehow isolate the two grounds from each other via a balun
>or some type of capacitor or sould this have worked and I should continue

>looking for some other problem. Your insight is greatly appreciated.
>
Top fed 1/4 wl slopers depend on the tower being a low Z at the antenna
mounting point in order to work properly. A lot of systems will not fit
this profile. You may need to hang one or more counterpoise wires from the
slopers ground connection (at the sloper) out in the other direction.

GL
Tom


From Unknown Thu Nov 30 12:11:06 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!chi-news.cic.net!uwm.edu!news.sol.net!daily-planet.execpc.com!earth!n9osk
From: [e-mail] (Shawn Balcerzak)
Newsgroups: rec.radio.amateur.antenna
Subject: Help Needed-70cm J-pole
Date: 28 Nov 1995 06:17:47 GMT
Organization: Exec-PC
Lines: 7
Message-ID: <49e9ib$[e-mail]>
NNTP-Posting-Host: earth.execpc.com
X-Newsreader: TIN [version 1.2 PL2]

I would appreicate if someone could post a "true diagram" for the J-pole
along with formulas, explaining the lengths, ect. I have gotten a copy of
a diagram with formulas explaining lengths vs freq. and so on. I built
one and noticed upon building that the formulas would not come out.
Perhaps you could shed some light on this for me...
   Thanks Much... 73 de n9osk -Shawn



From Unknown Thu Nov 30 12:11:07 1995
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From: [e-mail] (Gary V. Deutschmann, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Needed-70cm J-pole - 14872 (0/1)
Date: Tue, 28 Nov 1995 18:11:42 GMT
Organization: Inlink
Lines: 22
Message-ID: <49fj8j$[e-mail]>
References: <49e9ib$[e-mail]>
NNTP-Posting-Host: slip167.inlink.com
X-Newsreader: Forte Free Agent 1.0.82

[e-mail] (Shawn Balcerzak) wrote:

>I would appreicate if someone could post a "true diagram" for the J-pole
>along with formulas, explaining the lengths, ect. I have gotten a copy of
>a diagram with formulas explaining lengths vs freq. and so on. I built
>one and noticed upon building that the formulas would not come out.
>Perhaps you could shed some light on this for me...
>   Thanks Much... 73 de n9osk -Shawn

Measurements must take into account the diameter of the pipe see
K-factor in your handbook.

Measurements must also take into account the speed of the signal
through the pipe, just like it does through coax.  The pipe is cut to
the electrical length, not a wave in free space.

Copper Cactus Plans as attachment:

Gary - KG0ZP





From Unknown Thu Nov 30 12:11:07 1995
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From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Needed-70cm J-pole - 14872 (0/1)
Date: 29 Nov 1995 18:19:37 GMT
Organization: Comp.Center (RUS), U of Stuttgart, FRG
Lines: 13
Message-ID: <49i87p$[e-mail]>
References: <49e9ib$[e-mail]> <49fj8j$[e-mail]>
NNTP-Posting-Host: ipers1.e-technik.uni-stuttgart.de

>Measurements must also take into account the speed of the signal
>through the pipe, just like it does through coax.

Hi Gary,

Surely you are joking here. If you build an antenna from pipe,
you should make sure you feed it such that the signal travels on the
*outside* and not on the inside. Else you wont be heard.

73, Moritz





From Unknown Thu Nov 30 12:11:10 1995
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From: [e-mail] (Gary V. Deutschmann, Sr.)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Help Needed-70cm J-pole - 14872 (1/1)
Date: Tue, 28 Nov 1995 18:11:43 GMT
Organization: Inlink
Lines: 91
Message-ID: <49fj8s$[e-mail]>
References: <49e9ib$[e-mail]>
NNTP-Posting-Host: slip167.inlink.com
X-Newsreader: Forte Free Agent 1.0.82

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`
end


From Unknown Thu Nov 30 12:11:11 1995
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From: [e-mail] (Kwon2m)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How important is antenna height on 6m ssb
Date: 29 Nov 1995 04:34:04 -0500
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Optimum antenna height for 6M DX depends on the propagation mode. A very
high, high gain antenna is great for F2 and multi-hop Es as it has a low
angle of radiation. On the other hand, an antenna with less gain, mounted
lower may work better on single hop Es, where a higher angle is desired.
From what I've seen and heard, the ultimate 6M array is something on the
order of 4 fairly long yagis in a vertical stack, with the ability to
select all 4, the top one, or the bottom one. Selectable electrical uptilt
is also a plus. K1WHS has been using this configuration for several years
with great success. On the other hand, you can do very well on 6 without
so much effort. A single decent yagi (20 - 30 ft boom) at about 50 ft will
do just fine. I've worked WAS, all Canadian provinces, and about 80
countries with a 20 ft yagi at 35 ft with 200 watts. Success equals good!
Have fun!

John, N2BFJ



From Unknown Thu Nov 30 12:11:12 1995
Newsgroups: rec.radio.amateur.antenna
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From: [e-mail] (Jon Badger)
Subject: How to Improve 43-49 Mhz Reception
Message-ID: <[e-mail]>
Originator: jbadger@portdusol
Lines: 12
Sender: jbadger@portdusol (Jon Badger)
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Organization: Cray Research, Inc.
Date: 29 Nov 95 09:11:37 CST


Has anyone any ideas for improving 43-49 Mhz reception on a scanner?
I'm using an AR8000 and have tried antenna amps, discones, inverted
vee's and even a 100 ft. wire strung across the yard but nothing
seems to work as well as a good old centerloaded telescopic. The
only thing I haven't tried is an active antennna but the specs on
the ones I've seen only go up to 30 Mhz.

TIA...

[e-mail]



From Unknown Thu Nov 30 12:11:13 1995
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From: [e-mail] ()
Newsgroups: rec.radio.amateur.antenna
Subject: HTX-212 MOD ??
Date: Mon, 27 Nov 1995 18:46:29 GMT
Organization: Internet Exchange Carrier
Lines: 7
Message-ID: <49ctl8$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: pm1-64.ixc.net
X-Newsreader: Forte Free Agent v0.46

  Licensed HAM seeking info on modification for HTX-212 ,
 to allow storing out of band freq. to memory.
  Also licensed to operate 151.625 , and being able to store
 this freq. to memory FOR MONITORING , would be of great value.
  Hopefully ....                        Thanks for the help
                                        JC



From Unknown Thu Nov 30 12:11:14 1995
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From: David Sorrel <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: IC-706: what's best 2m/6m mobile antenna?
Date: 27 Nov 1995 02:03:39 GMT
Organization: Omen Computer Services, Perth, Western Australia
Lines: 29
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References: <48amjl$[e-mail]>
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>I am a just licenced
>tech starting my shack with an IC-706 and know very little about
>antennas.  Is there a single antenna that will allow both 2 and 6
>meter operation ( I know I'll need a duplexer to connect to both
><60Mhz and>60Mhz antenna ports) with "acceptable" SWR?
>
>I have tried a 5/8 wave 144 vertical with some success, but it's not
>good above 52Mhz.
>
>Any ideas or comments?

John,

Big question with a difficult answer.  My suggestion:

MFJ makes an antenna (vertical) that will cover the range but duplexing
the 100 watt hf port with the 10 watt 2 meter port will (may) be
difficult.  If you want simple, go with a multiband vertical and a
separate 2 meter antenna for home.

Terlin (Outbacker) antennas makes a mobil antenna for the IC706 but again
it requires switching for the 2 meter output.  Again, I suggest separate
antennas.

In any case, experiment, that is what it is all about.

David
VK6VW



From Unknown Thu Nov 30 12:11:15 1995
Path: news.epix.net!plum.epix.net!gmfoster
From: Garry Foster <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: ICOM 706
Date: Wed, 29 Nov 1995 17:20:41 -0500
Organization: epix.net
Lines: 12
Message-ID: <[e-mail]>
NNTP-Posting-Host: plum.epix.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII


I have a couple of questions about the new 706. I looked at the flyer and
didn't see them addressed. On two meters are sub audio tones available on
transmit for repeater use? And are touch tones included?

I have been told by a local sales lady that both of these features are
standard, however as I didn' see any mention on the spec sheet I'd like a
second opinon.
                                                        Garry





From Unknown Thu Nov 30 12:11:16 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!rahul.net!a2i!bug.rahul.net!a2i!kaiwan.kaiwan.com!not-for-mail
From: [e-mail] (Alfred Lee)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Lightning down your aerial
Date: 29 Nov 1995 19:54:26 -0800
Organization: KAIWAN Internet (310-527-4279,818-756-0180,909-785-9712,714-638-4133,805-294-9338)
Lines: 47
Sender: [e-mail]
Message-ID: <[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: kaiwan009.kaiwan.com

In article <[e-mail]>,
[e-mail] (Paul Burkimsher) wrote:
> Hi,
>
> I'd like to mount a long ( 7 metre ) CB aerial going up vertically from
> the chimney on the roof of our house but I'm worried about lightning.
>
> We do get storms round here (Geneva, Switzerland) some quite fierce. What
> precautions can I take?
>
> What do the TV companies do, I mean they have aerials on top of their
> masts many hundreds of metres high, don't they?
>
> Your (email) suggestions gratefully received...
>
> Thanks,
>
> paul
>
> [e-mail]
> [e-mail]

Hi,

Here's what I know.  I and many others will certainly be very grateful
to those who point out any error and confusion.

I believe nothing will survive a direct lightning strike as the
lightning current goes 100,000 amps and beyond.  However a direct
strike is very rare.  What most protection devices protect against
are induced transients.  Most protection devices provide a low
impedance (thick conductor) to a good ground with a small gap in
the path.  The gap makes the path normally an open circuit.  When
high voltage exists arcing completes the path and direct most of
the current to ground protecting the equiptment.  Any of shop
that sells two way radio communication should have these protection
devices available and is a good place to start finding out more.

No matter what kind of lightning protection devices you have in
place, it won't hurt to disconnect the antenna during a lightning
storm, just to be doubly sure your equiptment is protected.

73,

---
Alfred Lee                                                       [e-mail]
KE6KGV           'The answer is (e^iπ + 1) ? "No" : "Yes"'


From Unknown Thu Nov 30 12:11:17 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (Ken KD1XS)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Loading a Cushcraft R5 Vertical antenna on 80 m band
Date: 27 Nov 1995 07:26:51 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 6
Sender: [e-mail]
Message-ID: <49caqb$[e-mail]>
References: <493g2t$[e-mail]>
Reply-To: [e-mail] (Ken KD1XS)
NNTP-Posting-Host: newsbf02.mail.aol.com

Paul:

I don't know about the R5's, but I have heard that R7's will self distruct
if loaded on 80M.

Ken KD1XS


From Unknown Thu Nov 30 12:11:17 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!Germany.EU.net!news.dfn.de!news.ruhr-uni-bochum.de!news.rhrz.uni-bonn.de!RRZ.Uni-Koeln.DE!usenet
From: [e-mail] (Thilo Kootz)
Newsgroups: rec.radio.amateur.antenna
Subject: Longwire and Windom antennas
Date: Sun, 26 Nov 1995 12:33:42 GMT
Organization: Regional Computing Center, University of Cologne
Lines: 14
Message-ID: <499jq1$[e-mail]>
NNTP-Posting-Host: annexr1-12.slip.uni-koeln.de
X-Newsreader: Forte Free Agent 1.0.82

Dear Hams !
I am looking for a book about the theories of longwire and windom
antennas, especcially concerning the komplex impedeances at different
frequencies, and physical theorie of them.
I am familiar with stadard literature like arrl antennabook and
rothammel, however those books concentrate to much on praktical
building, rather than on the theoretical÷ parts. i guess those authors
are affraid of Maxwells Equations. i am not. the more theoretical the
better.
do you have any suggestions about the mentioned topics?
please answer per pm.
73 thilo ([e-mail])
thank you !



From Unknown Thu Nov 30 12:11:18 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!usenet.cis.ufl.edu!caen!kuhub.cc.ukans.edu!avalon.chinalake.navy.mil!usenet
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Making Spi-Ro 5-band trap dipole work on 20-10m
Message-ID: <[e-mail]>
From: Bill Harwood <[e-mail]>
Date: Wed, 29 Nov 1995 19:14:41 GMT
Sender: [e-mail] (NAWS news admin)
References: <49d1bt$[e-mail]>
Organization: NAWS, China Lake, CA
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[e-mail] wrote:
>Has anyone had problems getting this antenna to work well
>on 20-10m?  I had high hopes of resonance or matchability
>on 20, 15 and 10 but all it does is work well as an 80/40m
>dipole.  The pruning directions are for 80 and 40 meters only,
>and those bands are just fine out of the bag.  How can I get
>20, 15 and 10 to load with an autotuner having a range of 16-150
>ohms?  Thanks for your responses to my earlier queries.  I am
>stuck with this antenna for the duration and would like to make
>it work as it should, if possible.  --Bill KB8USZ
>[e-mail]

For a quick and dirty solution, try changing the length of the feed
line.  This will change the percieved impedance that the tuner sees.  A
barrel and a 3 foot, 6 foot, and 12 foot length of coax will generally
come up with a solution to make all bands happy.


  \------------------------------------------------------/
   \  Bill Harwood           U play it, I'll dance it   /
    \ AB6DY                         or                 /
     \                      I'll play it, U dance it  /
      \----------------------------------------------/




From Unknown Thu Nov 30 12:11:20 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!news.cac.psu.edu!news.tc.cornell.edu!newsstand.cit.cornell.edu!news.kei.com!newsfeed.internetmci.com!vixen.cso.uiuc.edu!usenet
From: "Charles Jack Hawley Jr." <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Making Spi-Ro 5-band trap dipole work on 20-10m
Date: Wed, 29 Nov 1995 16:49:50 -0800
Organization: University of Illinois, Urbana
Lines: 44
Message-ID: <[e-mail]>
References: <49d1bt$[e-mail]> <[e-mail]>
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To: Bill Harwood <[e-mail]>

Bill Harwood wrote:
>
> [e-mail] wrote:
> >Has anyone had problems getting this antenna to work well
> >on 20-10m?  I had high hopes of resonance or matchability
> >on 20, 15 and 10 but all it does is work well as an 80/40m
> >dipole.  The pruning directions are for 80 and 40 meters only,
> >and those bands are just fine out of the bag.  How can I get
> >20, 15 and 10 to load with an autotuner having a range of 16-150
> >ohms?  Thanks for your responses to my earlier queries.  I am
> >stuck with this antenna for the duration and would like to make
> >it work as it should, if possible.  --Bill KB8USZ
> >[e-mail]
>
> For a quick and dirty solution, try changing the length of the feed
> line.  This will change the percieved impedance that the tuner sees.
 A
> barrel and a 3 foot, 6 foot, and 12 foot length of coax will
generally
> come up with a solution to make all bands happy.
>
>   \------------------------------------------------------/
>    \  Bill Harwood           U play it, I'll dance it   /
>     \ AB6DY                         or                 /
>      \                      I'll play it, U dance it  /
>       \----------------------------------------------/

Mine wasn't too low an SWR on 10M but I never cared. I had to do the
feedline length adj. to tune it on 10M tho. Then adj. the length on
each side just after the feedpoint to get 15M, then the next segment
to get 20M, and so on. BE CAREFULL not to use a lot of power when
using a tuner in the shack to tune when you're out of resonance on
some band. I found that you can burn up the traps when operating out
of resonance at say 1000 watts with a tuner.
Chuck, KE9UW
--


Charles Jack Hawley Jr.
Amateur Radio KE9UW (A.K.A. 'Chuck' in Ham Radio)
BMW K100RS, BMWMOA #224 (A.K.A. 'Jack' in Motorcycles)
[e-mail]
Sr. Research Engineer Emeritus
Univ of Ill, Urbana-Champaign


From Unknown Thu Nov 30 12:11:21 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Date: 27 Nov 1995 08:50:07 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 16
Sender: [e-mail]
Message-ID: <49cfmf$[e-mail]>
References: <49b7ri$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader


>>With Henry's parts, you could load the antenna anywhere, and anyhow
you want... that he leaves to the individual... most do, I'll admit,
follow the picture on the brochure, but that is NOT a requirement of
the BugCatcher, which is basically a collection of finally crafted
parts that can be assembled any way the buyer choses..<<

That's interesting. I only know what I see in the parking areas of
Hamfests, and the Bugcatchers there (and the people I've worked on the air
using them) all had the hats at the bottom of a long whip. That is, of
course, the wrong place to put the hat.

Does the manufacturer give people advice on placement of the hat in
instructions?

73 Tom


From Unknown Thu Nov 30 12:11:22 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.telalink.net!uro!jackatak!root
From: [e-mail] (Jack GF Hill)
Subject: Re: Mobile antennas for Limited Space
Organization: Jack's Amazing CockRoach Capitalist Ventures
Date: Tue, 28 Nov 1995 04:24:50 GMT
Message-ID: <[e-mail]>
References: <49cfmf$[e-mail]>
Sender: [e-mail] (generalized bbs login)
Lines: 72

[e-mail] (W8JI  Tom) writes:

>Jack, W4PPT/M <[e-mail]> said:
> > With Henry's parts, you could load the antenna anywhere, and anyhow
> > you want... that he leaves to the individual... most do, I'll admit,
> > follow the picture on the brochure, but that is NOT a requirement of
> > the BugCatcher, which is basically a collection of finally crafted
> > parts that can be assembled any way the buyer choses..
>
> That's interesting. I only know what I see in the parking areas of
> Hamfests, and the Bugcatchers there (and the people I've worked on the air
> using them) all had the hats at the bottom of a long whip.
If by "long" you mean 4 feet or more, I'd take some issue... I have
nothing but detailed emperical evidence, taken over time, because
single point antenna observations are pretty useless.. it suggests
that the length of the whip or "stinger" *above* the cap hat is of
significant influence on teh antenna tuning and performance.

> That is, of course, the wrong place to put the hat.
I am not sure I can accept "of course" because in all things
(including this) there are exceptions. Under ideal conditions, what
you say is correct, but I have NEVER encountered anything approaching
"ideal conditions" in many years of mobiling!  ;^)  Hell, even the
conductivity of asphalt changes with ambiant temperature, and the
capacitive effect between antenna and earth changes with the
conductivity of the asphalt! Hardly ideal...  ;^)

> Does the manufacturer give people advice on placement of the hat in
> instructions?
Instructions? Nope. Henry has a brochure, in which he advertises
masts, coils, capacity hats, feed-throughs, matching coils, brackets,
some gorgeous hand-machined brass quick-disconnects, and pieces parts.

He doesn't try to tell anyone *how* to build the antenna, although, if
you run into Henry at a HamFest, he will offer some good advice. His
sales agent, Van, of VIS Systems (Hattiesburg, MS) has some
interesting ideas about how mobile antennas work as well.

I read alot, experiemented more, and took as accurate measurements as
I could possibly make within the limitations of my instrumentation.
From that, I imputed behaviors and reasons, and made changes that
either substantiated or altered my thinking...

I am today toying with an ungodly idea of a vertical loop: about 2M up
from the bumper, then across the top about 5M+ to the passenger side
front bumper, 2M down, and 4" copper flashing under the car.... (NO
attempt to keep the car separate from the antenna...) This would give
a loop circumference of 15M, which ought to behave well, even on 75M!

Modeling to date looks promising...

Basically, bigger is better (in antennas, anyway ;^)  and the higher
up to the load, the better (we tried one evening to put the coil about
20 feet off the ground... no major change in self-resonant frequency
of the antenna, but a marked improvement in efficiency! And, the
bandwidth improved as well...

I also will play with 2" or greater diameter copper pipe for the
mobile mast, but must use stainless or something for mechanical
strength...which is where the idea of the loop was born... if it is
going to be really big and really ugly, it better work better than
anything else! ;^)
--
73,
Jack, W4PPT/M (75M SSB 2-letter WAS #1657/#1789 -- both from the mobile! ;^)

+--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--+
| Jack GF Hill        |Voice: [phone] -             Ham Call: W4PPT |
| P. O. Box 1685      |Modem: [phone] -  Bicycling and SCUBA Diving |
| Brentwood, TN  37024|Fax:   [phone] -          Life Member - ARRL |
| [e-mail]  - "Plus ca change, plus c'est la meme chose" |
+--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--+


From Unknown Thu Nov 30 12:11:24 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!news.kei.com!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Date: 29 Nov 1995 03:33:33 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 15
Distribution: world
Message-ID: <49gkad$[e-mail]>
References: <491sbp$[e-mail]> <4972ts$[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <4972ts$[e-mail]>,
W8JI  Tom <[e-mail]> wrote:

>Actually you could do much better than a bug catcher. The Bugcatcher's hat
>is positioned improperly. The ideal hat location is at the open end of the
>antenna, not near the coil.

Hi Tom, could you explain this a little further? In a mobile, the top
hat capacitance is to ground in a parallel plane. With two horizontal
bugcatchers, the plane of the capacitance hats would be vertical so is
the capacitance between the two hats? If so, that's not much capacitance?
Or is the capacitance between the two hats and a conductive support? In
which case, a wooden support wouldn't work?

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Thu Nov 30 12:11:26 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Date: 29 Nov 1995 09:55:54 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 78
Sender: [e-mail]
Message-ID: <49hs9q$[e-mail]>
References: <49cfmf$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Hi Jack,
In article <[e-mail]>,
[e-mail] (Jack GF Hill) writes:

>If by "long" you mean 4 feet or more, I'd take some issue... I have
>nothing but detailed emperical evidence, taken over time, because
>single point antenna observations are pretty useless.. it suggests
>that the length of the whip or "stinger" *above* the cap hat is of
>significant influence on teh antenna tuning and performance.

The problem is current division. The hat robs the whip of current. The
addition of a hat at the base of a radiator can actually decrease
performance.

The hat should also be some distance above the coil, since turns reduction
by placing capacitance directly across the coil actually increase losses
close to the square of the inductive reactance reduction. This is because
the circulating current in the coil increases faster than resistive losses
decrease. R decreases almost linearily as the circulating current
increases, but the loss is I sqrd R!

>> That is, of course, the wrong place to put the hat.

>I am not sure I can accept "of course" because in all things
>(including this) there are exceptions. Under ideal conditions, what
>you say is correct, but I have NEVER encountered anything approaching
>"ideal conditions" in many years of mobiling!  ;^)  Hell, even the
>conductivity of asphalt changes with ambiant temperature, and the
>capacitive effect between antenna and earth changes with the
>conductivity of the asphalt! Hardly ideal...  ;^)
>

Let me re-phrase that. It is *absolutely* the wrong place to place a hat
for any electrical improvement in the system, unless the radiator length
above the hat is totally unimportant in it's contribution to the signal.

The radiation resistance increases rapidly as the element is end loaded.
Putting the hat at the top of the radiating area (if possible) increases
the antenna current over the entire radiator. Putting the hat at the
bottom of the radiator diverts current away from the radiator and lowers
radiation resistance and efficiency .

>I am today toying with an ungodly idea of a vertical loop: about 2M up
>from the bumper, then across the top about 5M+ to the passenger side
>front bumper, 2M down, and 4" copper flashing under the car.... (NO
>attempt to keep the car separate from the antenna...) This would give
>a loop circumference of 15M, which ought to behave well, even on 75M!

Interesting, I've been thinking about the same thing on my F-250 HD truck.
I was going to go up through the topper behind the drivers area of the cab
8 ft, back to the rear corner 8 ft, and down 8 ft to the top corner of the
bed. I plan on using the wide smooth bed as the return. I anticipated
using vacuum variables for remote tuning, and an isolating parallel stub
for higher frequencies.

>Basically, bigger is better (in antennas, anyway ;^)  and the higher
>up to the load, the better (we tried one evening to put the coil about
>20 feet off the ground... no major change in self-resonant frequency
>of the antenna, but a marked improvement in efficiency! And, the
>bandwidth improved as well...

My antenna has 8 ft of mast below the coils, with a four foot hat and
short stinger. The hat is one to two feet above the coil, and the stinger
is short. The antenna mounts on the upper corner of the bed behind the
driver. The radiation eff on 160 is ~1%, so it works killer there! I've
worked VK, SM and others on SSB mobile 160.

>I also will play with 2" or greater diameter copper pipe for the
>mobile mast, but must use stainless or something for mechanical
>strength...which is where the idea of the loop was born... if it is
>going to be really big and really ugly, it better work better than
>anything else! ;^)

I never worry about the mast. The ground loss R of the F-250 HD supercab (
a BIG truck) is over 17 ohms on 160 over good dirt, so a few tenths of an
ohm here or there doesn't make any real difference.

What does


From Unknown Thu Nov 30 12:11:26 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!in2.uu.net!news.ssd.intel.com!chnews!vegas.ch.intel.com!cmoore
From: [e-mail] (Cecil A. Moore~)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Date: 29 Nov 1995 17:51:53 GMT
Organization: Intel Corporation, Chandler, AZ
Lines: 13
Distribution: world
Message-ID: <49i6jp$[e-mail]>
References: <49cfmf$[e-mail]> <[e-mail]>
NNTP-Posting-Host: vegas.ch.intel.com

In article <[e-mail]>,
Jack GF Hill <[e-mail]> wrote:


>I am today toying with an ungodly idea of a vertical loop: about 2M up

Hi Jack, Here's an uglier idea. How about a physically large, horizontal
plane (low wind resistance) top hat mounted to the front bumper using
pvc pipe. The whip of the bugcatcher on the rear bumper is bent and
extended to make contact with the large horizontal plane. What do you
(or anybody else) think of that idea? Have you ever tried it?

73, Cecil, KG7BK, OOTC  (not speaking for my employer)


From Unknown Thu Nov 30 12:11:28 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!usenet.eel.ufl.edu!usenet.cis.ufl.edu!caen!kuhub.cc.ukans.edu!avalon.chinalake.navy.mil!usenet
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Message-ID: <[e-mail]>
From: Bill Harwood <[e-mail]>
Date: Wed, 29 Nov 1995 19:09:02 GMT
Sender: [e-mail] (NAWS news admin)
References: <491sbp$[e-mail]> <4972ts$[e-mail]>
Organization: NAWS, China Lake, CA
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0
X-Mailer: Mozilla 1.1N (Macintosh; I; 68K)
X-Url: news:4972ts$[e-mail]
Lines: 39

[e-mail] (W8JI  Tom) wrote:
>In article <491sbp$[e-mail]>, Hank Blackstock
><[e-mail]> writes:
>
>> I think if you used two texas bugcatchers in a dipole
>>config. that the results would be much improved
>
>Hi Hank,
>
>Actually you could do much better than a bug catcher. The Bugcatcher's hat
>is positioned improperly. The ideal hat location is at the open end of the
>antenna, not near the coil.
>
>The hat could be properly located in a home dipole, where the hat wouldn't
>snag on obstructions.
>
>Also, current loop radiation resistance increases by a factor of nearly
>four when a short antenna is end rather than feedpoint loaded. If a hat is
>used, and the coil is moved to the outer ends, even a loading coil with a
>few times more loss resistance will have more net efficiency.
>
>The Q and bandwidth of the overall system is more dependent on the
>inductance of the coil at resonance than losses in the coil.
>
>The screwdriver technique is an interesting idea, especially if the coils
>were moved out to the ends of the element.
>73 Tom
>

MULTI-BAND Antennas makes a dipole mount to use two SPIDERs in a dipole configuration.  This will give a fairly good 4 band dipole. =
 If you get the marine collar you can add three more bands.  These are end loaded antennas so the comment above is realized!!!!

  \------------------------------------------------------/
   \  Bill Harwood           U play it, I'll dance it   /
    \ AB6DY                         or                 /
     \                      I'll play it, U dance it  /
      \----------------------------------------------/




From Unknown Thu Nov 30 12:11:29 1995
Path: news.epix.net!news.sprintlink.net!europa.chnt.gtegsc.com!news.kreonet.re.kr!overload.lbl.gov!agate!news.mindlink.net!sol.ctr.columbia.edu!news.oberlin.edu!ocvaxa.cc.oberlin.edu!PRUTH
From: [e-mail]
Newsgroups: rec.radio.amateur.antenna
Subject: Mysteries of the trap dipole
Date: 28 Nov 1995 15:31:35 GMT
Organization: Oberlin College, Oberlin, Ohio
Lines: 11
Message-ID: <49fa0n$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: alpha.cc.oberlin.edu

The Spi-Ro 5-band trap dipole, 105' long, happens to be resonant
at 1.9 Mhz, 3.8 MHz and 7.2 Mhz--it loads beautifully on most of
160m, most of 80m and all of 40m, even though it's supposed to
be resonant on 80, 40, 20, 15 and 10.  The SWR is very high on
20, 15 and 10m.  I'd like to preserve the "bonus band" 160m while
being able to get a lower SWR on 20, 15 and 10m.  Any suggestions
on how to tune this antenna?  It's supposedly pre-tuned and
factory adjusted out of the bag, which it is for 160, 80 and 40...
It's the model D-52, and it looks similar to the trap dipole
illustrated in the old ARRL antenna book (ca. 1987).  Thanks again.
--Bill KB8USZ [e-mail]


From Unknown Thu Nov 30 12:11:30 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (LORMARSCO1)
Newsgroups: rec.radio.amateur.antenna
Subject: N4PC LOOP ANTENNA
Date: 26 Nov 1995 22:57:48 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 7
Sender: [e-mail]
Message-ID: <49bcvs$[e-mail]>
Reply-To: [e-mail] (LORMARSCO1)
NNTP-Posting-Host: newsbf02.mail.aol.com

I have the article that was published in CQ antenna guide a couple of
years ago regarding a folded loop that was designed by N4PC called the "PC
Loop".  The side length is about 55 feet.  Is there any other combinations
of lengths or shapes that I can use on this interesting antenna.  The area
that I have presents a problem for the size and shape described.  I can go
bigger or with a diamond shape.  I cannot find any programs that can
generate dimensions for this antenna.  Please help.  TNX.  WBOHNS.


From Unknown Thu Nov 30 12:11:30 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!agate!howland.reston.ans.net!newsfeed.internetmci.com!in2.uu.net!news.compuserve.com!newsmaster
From: Dietrich Morgenstern <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Oscar AZ/EL RotorC=?iso-8859-1?Q?=F6C?=
Date: Wed, 29 Nov 1995 09:14:22 +0100
Organization: NN
Lines: 7
Message-ID: <[e-mail]>
References: <NOMSGID_1=3A109=[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: dd22-004.compuserve.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 2.0b2 (Macintosh; I; 68K)

Clayton:
You would need mains voltage on the rotor controller, i.e. in your
shack only.
Mains voltage on top of your antenna mast would be very unusual
unless you want to put a power amplifier, a heating system or
something like this up there.
73 Dietrich DJ1VA


From Unknown Thu Nov 30 12:11:31 1995
Path: news.epix.net!news.sprintlink.net!newsserver.pixel.kodak.com!bloom-beacon.mit.edu!newsfeed.internetmci.com!news.texas.net!usenet
From: Ray Martinez <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: phone number for the people at butternut electronics
Date: 29 Nov 1995 05:14:27 GMT
Organization: Texas Networking, Inc.
Lines: 20
Message-ID: <49gq7j$[e-mail]>
References: <48d8lt$[e-mail]>
NNTP-Posting-Host: dnet146.sat.texas.net

> Can someone please provide me with a current phone number for
> Butternut electronics?
>
> Thanks.
>
> Bob

Try contacting Butternut @ Bencher Inc, Wood Dale, IL:

                [phone]


The last time that I contacted Butternut, approximately 3 years ago,
I called [phone] at a Lockart, Texas address.

 Good Luck,

Ray Martinez
N5VRE
[e-mail]


From Unknown Thu Nov 30 12:11:32 1995
Path: news.epix.net!news.sprintlink.net!hermes.is.co.za!news.pix.za!usenet
From: Danie Brynard <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Program for T-match design wanted
Date: 27 Nov 1995 06:35:10 GMT
Organization: PiX - Proxima information X-change
Lines: 7
Message-ID: <49bm6u$[e-mail]>
NNTP-Posting-Host: net-13.pta.pix.za
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)

I am looking for a little program to design a T-match for a 70cm
Yagi antenna. Is there something available on Internet perhaps ? Or
may be a reference to a book/article ?

Regards, Danie zs6awk




From Unknown Thu Nov 30 12:11:33 1995
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!cssun.mathcs.emory.edu!wa4mei!ke4zv!gary
From: [e-mail] (Gary Coffman)
Subject: Re: Source for Tower?
Message-ID: <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
Organization: Destructive Testing Systems
References: <4964v9$[e-mail]>
Date: Sun, 26 Nov 1995 15:24:18 GMT
Lines: 26
Xref: news.epix.net rec.radio.amateur.equipment:21750 rec.radio.amateur.antenna:17332

In article <4964v9$[e-mail]> [e-mail] writes:
>I am not an amateur radio operator, but I do want to erect a tower (currently
>only for an anemometer, but perhaps ultimately for a wind generator if the
>wind measurement provides sufficient justification) somewhere between 80 and
>120 feet high.
>
>Since I can weld and have hydraulics available, I may just buy some long
>H-beams and build my own fold-over tower; however, if I can find a good source
>for a more conventional triangular tower, I might go that way.  Anybody got
>any recommendations they'd care to share?

Yeah, consult a *competent* structural engineer. With that long a
moment arm, wind loads become significant for even modest frontal
areas. The Rohn tower catalog has a good deal of information on
this, but if you're building your own tower you'll need competent
analysis to determine its wind survival rating with various wind
load areas on top. Don't expect to put up a big wind generator, IE
anything with a swept area larger than about 10 square feet, without
doing some serious structural engineering.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | emory!kd4nc!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | [e-mail]
Lawrenceville, GA 30244     |                     |


From Unknown Thu Nov 30 12:11:34 1995
Path: news.epix.net!news.sprintlink.net!news.dx.net!news
From: [e-mail] (Jim Dear)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: STACKING VHF/UFH YAGIS
Date: 26 Nov 1995 14:32:00 GMT
Organization: The DataXchange Network, Inc
Lines: 21
Message-ID: <499tp0$[e-mail]>
References: <4985hi$[e-mail]>
NNTP-Posting-Host: s102.bayou.com
Mime-Version: 1.0
X-Newsreader: WinVN 0.99.4

In article <4985hi$[e-mail]>, [e-mail] says...
>
>I am looking for info on stacking yagis. I have four 2mtr yagis I
would
>like to stack and am having problems with the phasing. Doesn't seem to
>be much information on the subject in the ARRL Antenna Book. Thanks
for
>any help on this subject.

What brand & model antennas are they???  Different brands & models have
different stacking distances!!!  Cushcraft, I know has recommended data
on stacking their antennas, but don't consider that law.  At one time
the Central States VHF society published a list of stacking dimensions
for commercially made antennas.  These were tried & true dimensions
that were actually in use in the field.  U might want to send email to
ARRL and see if they can help u directly or advise you who to contact
on the subject.

Jim Dear, KG5VE
[e-mail]



From Unknown Thu Nov 30 12:11:35 1995
Path: news.epix.net!news.sprintlink.net!newsfeed.internetmci.com!swrinde!cs.utexas.edu!usc!chi-news.cic.net!io.org!uunet.ca!news.uunet.ca!banshee.uunet.ca!nobody
Message-ID: <[e-mail]>
Sender: [e-mail]
X-Nntp-Posting-Host: slip32_pc.north.nsis.com
Date: Mon, 27 Nov 1995 03:09:48 GMT
Reply-To: [e-mail]
From: [e-mail] (Scott Hale)
Subject: test
Newsgroups: rec.radio.amateur.antenna
Lines: 2

Testing only.>



From Unknown Thu Nov 30 12:11:36 1995
Path: news.epix.net!news.sprintlink.net!simtel!lll-winken.llnl.gov!uwm.edu!vixen.cso.uiuc.edu!news.ksu.ksu.edu!news.cis.okstate.edu!news.ecn.uoknor.edu!news.uoknor.edu!news.nodak.edu!news
From: [e-mail] (Bob)
Newsgroups: rec.radio.amateur.antenna
Subject: TS-140S software
Date: 27 Nov 1995 13:44:19 GMT
Organization: Bismarck State College
Lines: 4
Message-ID: <49cfbj$[e-mail]>
Reply-To: [e-mail]
NNTP-Posting-Host: prof01.elec.bsc.nodak.edu
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-Newsreader: WinVN 0.92.5

Can someone please help me locate software for an IF-10C Kenwood
interface.

Thank you.


From Unknown Thu Nov 30 12:11:36 1995
Path: news.epix.net!news.sprintlink.net!usenet.kornet.nm.kr!agate!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (HENRYPOL)
Newsgroups: rec.radio.amateur.antenna
Subject: Wanted: ELNEC
Date: 28 Nov 1995 08:58:17 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 5
Sender: [e-mail]
Message-ID: <49f4hp$[e-mail]>
Reply-To: [e-mail] (HENRYPOL)
NNTP-Posting-Host: newsbf02.mail.aol.com

Anyone out there who has purchased the new antenna software EZNEC wanting
to sell their used original (legal) copy of ELNEC?  If so, let me know,
and indicate price.

73, Henry


From Unknown Thu Nov 30 12:11:38 1995
Path: news.epix.net!news.sprintlink.net!holonet!colossus.holonet.net!woodybbs!1-3821-7-0!bill.white
From: [e-mail] (Bill White)
Date: 26 Nov 95 18:44:00
Newsgroups: rec.radio.amateur.antenna
Subject: What's a 2elem Quad Imped
Message-ID: <[e-mail]>
X-FTN-To: Pedro Pedroso
Organization: WoodyWare Software, Inc.
Lines: 24


Pedro:
     The impedance of a 2 element quad is around 100 ohms.  I usually
use a 1/4 wave section of 75 ohm coax to go between the driven element
and the 50 ohm coax.  You can wind this matching section  into a coil (4
or 5 inches) (11 or 12 centimeters) to act as a choke balun. To figure
the length of the matching section, multiply the length of 1/4 of the
wavelength by 0.60 or whatever is the velocity factor of your 75 ohm
coax.  It should be around 6 feet or 2 meters. You don't need to be real
precise.
      Espero que vas a gozar mucho su sistema radiante para diez metros.
Y espero encontrarte por las bandas.  Buena suerte, amigo.  Ciao.


                                                Bill White
                                                N5XYN
                                                North Little Rock, AR
                                                EEUU
--
|Fidonet:  Bill White 1:3821/7
|Internet: [e-mail]
|
| Standard disclaimer: The views of this user are strictly his own.



From Unknown Thu Nov 30 12:11:38 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!clark.net!j38
From: "Tony Stalls (K4KYO)" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Which HF Vertical
Date: Tue, 28 Nov 1995 19:41:40 -0500
Organization: Clark Internet Services, Inc.
Lines: 14
Message-ID: <[e-mail]>
References: <Pine.BSD/[e-mail]> <48soth$[e-mail]> <48u7r7$[e-mail]>
NNTP-Posting-Host: clark.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
In-Reply-To: <48u7r7$[e-mail]>

I heard Lew McCoy, W1ICP, speak on antennas recently and he described the
antennas he uses.  He said that he has a Uni-Hat capacitance terminated
short vertical and it outperforms a dipole.  That's the good news.  The
bad news is that it costs $500.  That's a bit stiff for me when dipoles
are doing the job for *significantly* fewer dollars, but as I contemplate
trying 160 meters this Winter, I've been thinking about it.  They have an
ad in the December issue of CQ, but if you don't have it, you can give
them a call at 214-352-4623.

73,
Tony
K4KYO




From Unknown Thu Nov 30 12:11:40 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!torn!uunet.ca!news.uunet.ca!border.com!nobody
From: [e-mail] (Rod Adkins)
Subject: Re:Which HF Vertical
Message-ID: <[e-mail]>
Sender: [e-mail]
Organization: Border Network Technologies Inc.
Date: Mon, 27 Nov 1995 18:55:24 GMT
X-Newsreader: Beame & Whiteside's BWNewsW Version 3.2
Lines: 32

>In a message dated 95-11-23 02:42:14 EST, Kory wrote:
>
>> I've looked at the Cushcraft,
>>>Butternut, Hygain, Hustler. I would like to hear about your
>>experiences
>
>Kory:
>
I have a Butternut HF-6V, with the WARC add-ons, and the radial kit, installed
on a 20 ft home=brew tilt-over pole.

Same experience with the radials - they break off at the feedpoint.  I am
working on a mod to de-stress this connection.

40, 30, 20, 15 & 10 tune just fine, 80 very narrow (as advertised).
I find 12, 18 very hard to tune; I don't understand how these mods work.

Performance:  on 30, I always get good reports (reflection on the calibre of
ant used on this band ??).
On 40, 2/3 S units lower than a hor.  dipole up 25 feet under normal condx.
for up to 1,000 miles in the early evening.
Very occasionally, this reverses, and the B'nut is better than the dipole.
Generally the B'nut is noisier, although this too varies.

Other bands - I get out.

Straightforward to build, easy to tune (12/18 excepted).
Has stood up to 3 S. Ontario winters.

Rod,  VE3INE




From Unknown Thu Nov 30 12:11:41 1995
Path: news.epix.net!news.sprintlink.net!howland.reston.ans.net!newsfeed.internetmci.com!EU.net!Norway.EU.net!nntp-oslo.UNINETT.no!nntp-trd.UNINETT.no!usenet
From: "Eystein R. Aarseth" <[e-mail]>
Newsgroups: rec.photo.technique.nature,rec.photo.technique.people,rec.ponds,rec.puzzles,rec.puzzles.crosswords,rec.pyrotechnics,rec.radio.amateur.antenna,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment
Subject: Re: Will YOU Be The Grim Reapers NEXT Victim ??
Date: 27 Nov 1995 18:02:54 GMT
Organization: Aalesund College, Norway
Lines: 7
Message-ID: <49cuge$[e-mail]>
References: <48a985$[e-mail]> <48bnmv$[e-mail]> <48grl7$[e-mail]>
NNTP-Posting-Host: glab-06.hials.no
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.22 (Windows; I; 16bit)
Xref: news.epix.net rec.photo.technique.nature:243 rec.photo.technique.people:183 rec.ponds:6077 rec.puzzles:52417 rec.puzzles.crosswords:4647 rec.pyrotechnics:38038 rec.radio.amateur.antenna:17351 rec.radio.amateur.digital.misc:12831 rec.radio.amateur.equipment:21789


I wonder why this thread *isn't* in the misc.health.* hierarchy?

Or is this Grim Reaper a new camera, a new puzzle, a new way of blowing
things up, a new ham-radio, or just a not-so-very-new way of getting
FLAMED! ???



From Unknown Fri Dec 01 20:20:18 1995
Path: news.epix.net!news.sprintlink.net!news.ecrc.de!news.hamburg.pop.de!nordwest.pop.de!informatik.uni-bremen.de!gina.zfn.uni-bremen.de!news.dfn.de!RRZ.Uni-Koeln.DE!news.rhrz.uni-bonn.de!news.uni-stuttgart.de!news.belwue.de!scsing.switch.ch!swsbe6.switch.ch!swidir.switch.ch!in2p3.fr!oleane!tank.news.pipex.net!pipex!howland.reston.ans.net!newsfeed.internetmci.com!chi-news.cic.net!nntp.coast.net!col.hp.com!news.dtc.hp.com!canyon.sr.hp.com!glenne
From: [e-mail] (Glenn Elmore)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 10 GHz waveguide to coax help needed
Date: 28 Nov 1995 16:51:00 GMT
Organization: Hewlett Packard Sonoma County
Lines: 26
Message-ID: <49felk$[e-mail]>
References: <49clnp$[e-mail]>
NNTP-Posting-Host: n6gn.sr.hp.com
X-Newsreader: TIN [version 1.2 PL2]

[e-mail] wrote:
: How do you get a wg-90 waveguide to coax? i heard one idea, but i didn't ask
: how to.  where can i get info on this?  and NO, the ARRL microwave experiment
: handbook does NOT have it in.

: Thanks again

DAvid
   I show a simple WR90 to SMA transition that can be made from PC board
and brass shim stock in Part II of my microwave station design series,
Ham Radio Magazine June 1988 Page 37.

  As I remember, >20 dB return loss over 8-12 GHz which is likely better than
some other parts of your system is pretty easy to achieve.

Glenn Elmore n6gn

amateur IP:     [e-mail]
Internet:       [e-mail]

|--------------- N6GN's Higher Speed Packet WWW Page -------------------|
|                                                                       |
|       ftp://col.hp.com/hamradio/packet/n6gn/index.html                |
|                                                                       |
|-----------------------------------------------------------------------|



From Unknown Fri Dec 01 20:20:19 1995
Path: news.epix.net!news.sprintlink.net!news.clark.net!rahul.net!a2i!bug.rahul.net!a2i!genmagic!sgigate.sgi.com!swrinde!newsfeed.internetmci.com!vixen.cso.uiuc.edu!howland.reston.ans.net!ix.netcom.com!netnews
From: [e-mail] (DAVID NIELSEN )
Newsgroups: rec.radio.amateur.antenna
Subject: Butternut HF9VX  Tuning (or failure to tune)
Date: 29 Nov 1995 01:47:42 GMT
Organization: Netcom
Lines: 7
Message-ID: <49ge3u$[e-mail]>
NNTP-Posting-Host: ix-wc4-07.ix.netcom.com
X-NETCOM-Date: Tue Nov 28  5:47:42 PM PST 1995

Has anyone out there tried to tune an HF9VX antenna? The last time I
had it down from the 12 foot galv pipe (buried), all of the bands
appeared to be in tune --using an MFJ259 analyzer. but as soon as I had
back in the air with the counterpoise mounted everything went haywire.
I can use 10 M but precious little else.I am using the 33 foot coiled
75 ohm coax as directed. Bencher (nee Butternut) was not of much help.
Anyone out there been successful?


From Unknown Fri Dec 01 20:20:20 1995
Path: news.epix.net!news.sprintlink.net!news.uoregon.edu!mayonews.mayo.edu!newsdist.tc.umn.edu!umn.edu!spool.mu.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (WA8MSF)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: How important is antenna height on 6m ssb
Date: 29 Nov 1995 14:52:30 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 17
Sender: [e-mail]
Message-ID: <49idlu$[e-mail]>
References: <49h9ec$[e-mail]>
Reply-To: [e-mail] (WA8MSF)
NNTP-Posting-Host: newsbf02.mail.aol.com

In the eastern midwest (Ohio - EM79), antenna height on 6M SSB can be
quite a big deal if one wants to work tropo scatter.  I am fortunate
enough to have a 120' tower with my 6M beam at the top.  Locals that
horse-race with similar antenna gain and power do about as well, sometimes
even better, on Es openings and ionoscatter or meteor-scatter to the east
coast and Texas.  The game changes for troposcatter to places too close
for most Es like Alabama.  I can work guys in EM63 that the "low antenna"
horse-racers can barely tell are on the air and cannot be heard by the DX.
 The only difference is twice the antenna height.  If you look into the
troposcatter path-loss calculations, it is easy to see that getting the
take-off angle of your antenna system down to 1 or 1.5 degrees from 2 or 3
degrees can be worth over 10 dB on the path.  If you like to chase grid
squares in a contest or enjoy horse-racing your pals, antenna height has a
scientifically valid big influence.  Enjoy 6M SSB.

Mike
WA8MSF - Cincinnati - EM79


From Unknown Fri Dec 01 20:20:21 1995
Path: news.epix.net!news.sprintlink.net!news.scott.net!acara.snsnet.net!news5.crl.com!nntp.crl.com!howland.reston.ans.net!tank.news.pipex.net!pipex!newsfeed.internetmci.com!btnet!zetnet.co.uk!demon!mail2news.demon.co.uk!g6iqm.demon.co.uk
From: Michael J Wooding <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: VHF Communications Magazine
Date: Wed, 29 Nov 1995 18:10:38 GMT
Organization: None
Lines: 18
Message-ID: <[e-mail]>
Reply-To: [e-mail]
X-NNTP-Posting-Host: g6iqm.demon.co.uk
X-Broken-Date: Wednesday, Nov 29, 1995 18.10.38
X-Newsreader: Newswin Alpha 0.7
X-SMTP-Posting-Host: g6iqm.demon.co.uk [Wed, 29 Nov 95 18:14:22 GMT]
X-SMTP-Posting-Host: post.demon.co.uk [Wed, 29 Nov 95 19:06:11 GMT]

Hi There,

Things have changed a little on our WWW site.  A few (not too many)
graphics and a small selection of past articles as tempters.

Take a look?

http://www.taynet.co.uk/~gdx/ag/vhfcomm.htm

73 ... Mike
--
Michael J Wooding   [e-mail] - CompuServe: 100441,377
Web Pages: http://www.taynet.co.uk/~gdx/ag/vhfcomm.htm
Tel: [phone]   Fax: [phone]
KM Publications, 5 Ware Orchard, Barby, Nr.Rugby, CV23 8UF, UK
VHF Communications Magazine - Especially Covering VHF, UHF and Microwaves



From Unknown Fri Dec 01 20:20:22 1995
Path: news.epix.net!news.sprintlink.net!news.us.world.net!ns2.mainstreet.net!bug.rahul.net!a2i!news.erinet.com!ragnarok.oar.net!malgudi.oar.net!news.rcinet.com!sally.dma.org!millersg
From: [e-mail] (Steve Miller)
Newsgroups: rec.radio.amateur.equipment,rec.radio.amateur.antenna
Subject: Re: Which HF Vertical
Date: 30 Nov 1995 02:15:25 GMT
Organization: Dayton Microcomputer Association; Dayton, Ohio, USA
Lines: 19
Message-ID: <49j43t$[e-mail]>
References: <Pine.BSD/[e-mail]> <[e-mail]> <[e-mail]>
NNTP-Posting-Host: dmapub.dma.org
Xref: news.epix.net rec.radio.amateur.equipment:21892 rec.radio.amateur.antenna:17406

In article <[e-mail]>,
John Seney <[e-mail]> wrote:
>Just saw an ad in the December '95 CQ magazine for a new vertical from
>Hy-Gain that is 10 - 40 meters, stands 29 feet tall, is self supporting,
>and requires no radials. They also make the claim of 750 watts key down
>for 30 minutes and no problems. They don't mention price but I assume it
>is competitive.

I would be leery of any vertical which the marketing says 'no radials
required'. Efficiency is lost when verticals are mounted on or slightly
above ground. A proper radial system will reduce the ground losses
allowing better radiation from the antenna. Get a Butternut and put out
radials - That's what I did.


--
Steve Miller
[e-mail]
WD8IXE - Ridin' the aethereal waves


From Unknown Fri Dec 01 20:20:23 1995
Path: news.epix.net!news.sprintlink.net!hookup!news.moneng.mei.com!uwm.edu!newsfeed.internetmci.com!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Mobile antennas for Limited Space
Date: 30 Nov 1995 06:49:48 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 46
Sender: [e-mail]
Message-ID: <49k5os$[e-mail]>
References: <49gkad$[e-mail]>
NNTP-Posting-Host: newsbf02.mail.aol.com
X-Newsreader: AOL Offline Reader

Hi Cecil,
In article <49gkad$[e-mail]>, [e-mail]
(Cecil A. Moore~) writes:
>Hi Tom, could you explain this a little further? In a mobile, the top
>hat capacitance is to ground in a parallel plane.

It isn't worth worrying about capacitance "to ground" or anything else if
the distance is large compared to hat diameter. This goes back to comments
that appeared in the "is a balun necessary" thread. The hat has
"capacitance" to everything else in the universe, not just to ground.
Remember it has electrical mass and takes time to charge and discharge.

>With two horizontal bugcatchers, the plane of the capacitance hats would
be >vertical so is the capacitance between the two hats?

We'd better call it electric field. The electric field is horizontal if
the charge difference is spaced in that plane.

>If so, that's not much capacitance?

It's almost identical.

>Or is the capacitance between the two hats and a conductive support? In
>which case, a wooden support wouldn't work?

It's between the hats and everything. That's one disadvantage of mounting
the hat near the coil, unwanted capacitance shunts the coil from the hat
to winding and hat to mast capacitance. The shunt C makes the winding
smaller, but the circulating current higher. So less turns have more I
sqrd R loss.
The other disadvantage is current that would flow in the whip section of
the radiator is "diverted" to the hat. Whip current and radiation decrease
when the hat is positioned at the base of the whip. Fortunately, the large
linear current in the mast on the feedline side of the loading coil does
most of the radiating if mast length is a fraction of the whip's length.
If the mast on the feedline side of the coil has two amperes of current,
that value appears over the entire length of the short mast. Even though
two amperes appears on the whip side of the coil, part of it flows in the
hat and is "wasted". The rest flows in the whip and tapers rapidly along
the length of the whip, with the tip area contributing nothing to EM
radiation.
Moving the hats out to the ends to maximize current over the entire length
of available radiator area is a good idea, unless we want to produce heat
instead of EM fields.

73 Tom


From Unknown Fri Dec 01 20:20:24 1995
Path: news.epix.net!news.sprintlink.net!news.us.world.net!ns2.mainstreet.net!bug.rahul.net!a2i!rahul.net!a2i!news.clark.net!clark.net!j38
From: "Tony Stalls (K4KYO)" <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Apartment "Stealth" Solved!
Date: Thu, 30 Nov 1995 11:31:20 -0500
Organization: Clark Internet Services, Inc.
Lines: 41
Message-ID: <[e-mail]>
NNTP-Posting-Host: clark.net
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

Some of us have been trying to help a handicapped (blind) ham with his
antenna for the past two years, but we've had very little success since
he's one of those unfortunate folks who lives in a high-rise apartment
with a no antenna policy.  We've tried dangling wires, loops, mobile whip
dipoles, and lots of other things, but not until this past week did we
find something that worked well.

His Kenwood TS-440 had a built in tuner, but not surprisingly, it didn't
help, so on advice from a couple of local folks, he bought a SGC SG-230
"Smartuner".  We connected it to a 50 or so foot random length wire
running out of one window and pulled around the corner of the building to
another and fed with a single wire connected at about the midpoint.  We
used the apartment's hot water heating system as a counterpoise.  Well,
he's now getting out with respectable signal reports on all bands down to
160 meters.

If you're not familiar with this tuner, it doesn't use an external control
circuit, but instead senses the RF and tunes on that.  You just QSY and
start talking/keying the rig.  It performs as advertised and really does
tune an antenna in two seconds, and much quicker if the frequency happens
to have been one of 500 stored previously in it's memory.

I looked at the schematic briefly and (from memory) it is essentially a
pi-type antenna tuner a la the ARRL Handbook's "Ultimate Transmatch" that
uses a microprocessor to control relays to switch inductors and capacitors
in and out.  It seems I recall the inductor values as being .25, .5, 1, 2,
4, 8, 16, and 32 uh.  The capacitors are a similar binary scheme, but I
can't recall for sure how it was set up.

I don't know why I haven't heard more about these before now.  Maybe it's
because they're relatively expensive and go for about $450-500, but from
what I've seen, it seems to be well worth the money, particularly in an
application like this.

73,
Tony
K4KYO
[e-mail]





From Unknown Fri Dec 01 20:20:26 1995
Path: news.epix.net!news.sprintlink.net!hookup!gatech2!swrinde!newsfeed.internetmci.com!news.exodus.net!news.alt.net!news1.alt.net!news.u.washington.edu!uw-beaver!uw-coco!mdisea!mothost!lmpsbbs!NewsWatcher!user
From: [e-mail] (Karl Beckman)
Newsgroups: rec.radio.amateur.antenna
Subject: Re: 6 meter mobil with gain?
Date: Thu, 30 Nov 1995 15:09:03 -0500
Organization: Mot RNSG - Private Data
Lines: 49
Message-ID: <CSLE87-3011951509040001@145.39.1.10>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: 145.39.1.10

In article <[e-mail]>, Bill Harwood
<[e-mail]> wrote:

> I am looking for a six meter antenna with some gain.  I have a pretty
> good 1/4 wave vertical solution (standard California larsen 2 meter 5/8
> wave trimmed to 6 meters).  A top or center loaded 5/8 wave or 1/4 over
> 1/4 is the type solution I would like.
>
> 1.  Does anyone knoe of a commercial built antenna for 6 meters which
> has gain over a 1/4 wave?
>
> 2.  Has anyone successfully built a six meter mobile from a CB whip and
> coaxial matching sections.  If so could you pass on the instructions.
> My theoretical one did not work well.
>
> 3.  How about a six meter match box that would handle the CB whip.
>
> Thanks,
>
>   \------------------------------------------------------/
>    \  Bill Harwood           U play it, I'll dance it   /
>     \ AB6DY                         or                 /
>      \                      I'll play it, U dance it  /
>       \----------------------------------------------/

How much more gain do you think you'll need?  The basic rule is that it
takes a 6 dB increase in signal strength to make a noticeable difference
in SSB quality or FM S/N.  That's why 1 S-unit is 6 dB, by the wa).
Here's how it works:

You must double the length of the present quarter wave radiator to get 3
dB of gain.   Now it is ten feet long.  Double it again to get 6 dB and
insert phasing coils at the base and about 1/2 way up.  Now your antenna
is 20 feet tall, got a big glob in the middle.  It's not too good for a
mobile any more.  That's why you don't find any gain antennas for 6M or
30-50 MHz commercial service.

--
Karl Beckman, P.E.                <      If our English language is so   >
Motorola Pvt Data Systems         <   precise, why do you drive on the   >
Schaumburg, IL  /  Parma, OH      <   parkway and park on the driveway?  >
[phone] / [phone]
**  Schaumburg area code changes from 708 to 847 on January 20, 1996!   **
**  Opinions expressed here do not represent the views of Motorola Inc. **
--
By sending unsolicited commercially-oriented e-mail to this address, the
sender agrees to pay a $100 fee to the recipient for proofreading services.
--
Amateur radio WA8NVW                        NavyMARS NNN0VBH @ NOGBN.NOASI


From Unknown Fri Dec 01 20:20:26 1995
Path: news.epix.net!news.sprintlink.net!tank.news.pipex.net!pipex!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Roger A. Cox <[e-mail]>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: DXtreme Amateur Radio Station Log System V2.0
Date: 30 Nov 1995 17:55:14 GMT
Organization: Telex Communications, Inc.
Lines: 1
Message-ID: <49kr62$hj1$[e-mail]>
References: <49g6g6$[e-mail]>

COMMERCIAL ADVERTISING !!  Here we go again.


From Unknown Fri Dec 01 20:20:27 1995
Newsgroups: rec.radio.amateur.antenna
Path: news.epix.net!news.sprintlink.net!news.Edu.TW!newsserver.jvnc.net!princeton!cnn.Princeton.EDU!udel!gatech2!swrinde!newsfeed.internetmci.com!news.kei.com!ub!oswego!rocky-gw.oswego.edu!mcilhon
From: MJ McIlhon <[e-mail]>
Subject: 2 meter vertical measurments needed
X-Sender: [e-mail]
X-Nntp-Posting-Host: rocky.oswego.edu
Content-Type: TEXT/PLAIN; charset=US-ASCII
Message-ID: <[e-mail]>
Sender: [e-mail] (Network News)
Organization: SUNY Oswego
Mime-Version: 1.0
Date: Thu, 30 Nov 1995 22:56:31 GMT
Lines: 5

I saw an article a couple of years ago in Popular Communications anual
big issue.  The antenna was constructed on a PL-259 fmale chassis mount
connector, with the elements being welded right onto the plug.  I have
the parts, but need the measurements.  Can anyone help? Please respond
via email.  Thanx.