QRZ! Ham Radio 5/QRZ Ham Radio Callsign Database - Volume 5.iso/digests/infoham/940032.txt

Internet Message Format | 1994-11-13 | 24.4 KB

Date: Thu, 13 Jan 94 06:11:53 PST
From: Info-Hams Mailing List and Newsgroup <[e-mail]>
Errors-To: [e-mail]
Reply-To: [e-mail]
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Subject: Info-Hams Digest V94 #32
To: Info-Hams


Info-Hams Digest            Thu, 13 Jan 94       Volume 94 : Issue   32

Today's Topics:
               *WANTED-> Kenwood SM220 station monitor
                     An online repeater database
                        cancer from ham radio
                    DIPOLES FED BY LADDER LINE - Q
                             Fm Broadcast
              Fm Broadcast (Legal Part 15 power levels)
                       Packet-Internet gateways
              Portable 2m Antenna for Mountaineering???
                       Ramsey kits not too good
                        Ramsey Kits Revisited
                       Signaling Device Wanted
                     Vaccuum Tubes, Lots of them!
                    Vintage 50's station for sale
               WANTED: 1930's Vacuum Tubes for display
              WANTED:  Info on Standard C5718DA (2 msgs)

Send Replies or notes for publication to: <[e-mail]>
Send subscription requests to: <[e-mail]>
Problems you can't solve otherwise to [e-mail].

Archives of past issues of the Info-Hams Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives/info-hams".

We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party.  Your mileage may vary.  So there.
----------------------------------------------------------------------

Date: Wed, 12 Jan 1994 01:22:30 GMT
From: cs.yale.edu!csusys.ctstateu.edu![e-mail]
Subject: *WANTED-> Kenwood SM220 station monitor
To: [e-mail]

    Looking for a Kenwood SM-220 station monitor......
    Replies to [e-mail]
    73 de N1QVE
    Harry

------------------------------

Date: 12 Jan 94 12:48:29
From: swrinde!cs.utexas.edu!howland.reston.ans.net!agate!msuinfo!netnews.upenn.edu!mipg.upenn.edu![e-mail]
Subject: An online repeater database
To: [e-mail]

   Can someone copy this file to an anonymous FTP site? My mailer won't
   let me copy it, its too big.

   Greg
   WA9EYY

I'll take care of it since it was originally posted by me.
Tentatively it will be at mipg.upenn.edu I'll post the details as soon
as I get my sys admin to take care of it.

--
Medical Image Processing Group     |                  Conway Yee, N2JWQ
411 Blockley Hall                  |  EMAIL : [e-mail]
418 Service Drive                  |  VOICE : 1 [phone]
Philadelphia, PA 19104-6021 (USA)  |  FAX   : [phone]
--
Medical Image Processing Group     |                  Conway Yee, N2JWQ
411 Blockley Hall                  |  EMAIL : [e-mail]
418 Service Drive                  |  VOICE : 1 [phone]
Philadelphia, PA 19104-6021 (USA)  |  FAX   : [phone]

------------------------------

Date: 13 Jan 94 06:20:38 GMT
From: ogicse!emory!news-feed-2.peachnet.edu!umn.edu!csus.edu!netcom.com![e-mail]
Subject: cancer from ham radio
To: [e-mail]

Tell me, if ham radio causes cancer, why is it that all the ham radio
club meetings are filled with old people with few health problems other
than normal ones for their age?

Travis Wise
KB8FOU
18 yrs old
General class

--

Travis A. Wise                      KB8FOU
1421 Grace Avenue                   Senior, Del Mar High School
San Jose, CA 95125-5206             [phone]
[e-mail]

------------------------------

Date: 12 Jan 94 20:32:43 GMT
From: sdd.hp.com!col.hp.com!srgenprp![e-mail]
Subject: DIPOLES FED BY LADDER LINE - Q
To: [e-mail]

[e-mail] ([e-mail]) wrote:

:        I just bought an antenna tuner and want to put up a dipole fed
:        by 450 ohm ladder line, for use across 160-10 meters.  The longest
:        one I have located commercially is one 135ft long with 100ft of
:        feed line, for 80-10 meters (much cheaper, incidently, than building
:        from scratch with current wire prices!).  Anyone have an opinion
:        on my going to ~260 ft (yes, I do have room), especially regarding
:        performance on higher bands (40-10 meters).

The 260-foot antenna would work better on 160 meters.  You could probably
load up the 135-foot antenna on 160, but efficiency might be poor because
of the low radiation resistance.

On the higher bands, the main difference with the 260-foot antenna would be
the radiation pattern.  On 80 meters, the pattern would be a cloverleaf
(maximums at approx. 45-degree angle from the wire) instead of bi-directional
perpendicular to the wire.  On 40-10 meters, the antenna would tend to be
more directional off the ends of the wire than with the 135-foot antenna.

AL N1AL

------------------------------

Date: 12 Jan 94 12:16:39 EST
From: world!ksr![e-mail]
Subject: Fm Broadcast
To: [e-mail]

[e-mail] (Alan Bloom) writes:
>chris andersen ([e-mail]) wrote:
>: Is it possible for a person with ham or modified ham set up to broadcast
>: on the 88-108 Mhz area???

>None of the other respondents mentioned that it is perfectly legal to
>broadcast on the FM broadcast band using very low power.  You can
>buy "wireless microphones" and other devices with a range of a couple
>hundred feet or so.

True, but normally those "wireless microphones" aren't described as "ham or
modified ham set ups" (though there are people who have converted 49MHz
walkie-talkies to 6 meters...).

------------------------------

Date: 12 Jan 94 20:27:54 GMT
From: sdd.hp.com!col.hp.com!srgenprp![e-mail]
Subject: Fm Broadcast (Legal Part 15 power levels)
To: [e-mail]

Barry x24904/ER/167B-TED ([e-mail]) wrote:
: In article <2gv1l8$[e-mail]> [e-mail]
: (Michael Gentle) writes:
: >IF you use less then 100mw and
: >a antenna for less then 5' in length then I beleive that it is legal.

: Fellow hams...
: PLEASE stop propagating these myths.

: The Part 15 rules give the maximum permissible field strength at a specified
: distance from the antenna.  For transmissions in the FM broadcast band, the
: numbers are 250 microvolts per meter measured at three meters.

: Many commercial wireless microphones and FM home-broadcaster kits far exceed
: these power levels and are illegal to use by FCC rules.

I haven't looked at the part 15 rules in years, but unless they have
changed, you are allowed to use EITHER the field strength limit OR the
power and antenna length limit.

AL N1AL

------------------------------

Date: Wed, 12 Jan 1994 00:27:40 GMT
From: amd!amdahl!netcomsv!netcom.com![e-mail]
Subject: Packet-Internet gateways
To: [e-mail]

I have finally completed my collection of packet <-> internet gateways.
I have placed the information on world.std.com in
pub/hamradio/packet-internet

If anyone has any updated information, please e-mail me.

The information included is for the following gateways:

amprnet (miscellaneous Amateur tcp/ip gateways)
ka2qhd
n0ary
n6qmy
w2xo
wb7tpy


73 and enjoy!
Scott




--
===============================================================================
| Scott Ehrlich            Internet: [e-mail]     BITNET: wy1z@NUHUB  |
| Amateur Radio: wy1z          AX.25: [e-mail]                    |
|-----------------------------------------------------------------------------|
|    Maintainer of the Boston Amateur Radio Club hamradio FTP area on      |
|            the World - world.std.com  pub/hamradio               |
===============================================================================

------------------------------

Date: 12 Jan 1994 17:03:00 GMT
From: koriel!newscast.West.Sun.COM!abyss.West.Sun.COM!sunspot![e-mail]
Subject: Portable 2m Antenna for Mountaineering???
To: [e-mail]

In article <[e-mail]> [e-mail] (Tom) writes:
>David,
>
>Try a rolled up J-pole.  It's made of 300 Ohm Twin lead and tapped with a
>50 Ohm coax with BNC connector on opposite end.  It provides about 2.8dB
>gain.  You can buy the ant from MFJ for  about $12 or build it yourself.

Since a J-pole is an end-fed 1/2 wave vertical, how does it have
2.8 dB of gain?  2.8dB of gain in relation to what?  A quarter-wave?
A dipole?  An isotropic radiator?

Optimally, a J-pole will have 0 dB relative to a 1/2 wave dipole,
but the matching section contributes loss, so I'd normally expect
a J-pole to provide a little less than 0dB, say -.5dB relative
to a dipole.  If so, this is something like 1.5dB over an isotropic
radiator...

--
 * Dana H. Myers KK6JQ, DoD 466    | Views expressed here are    *
 * [phone]         | mine and do not necessarily    *
 * [e-mail]    | reflect those of my employer    *
 * This Extra supports the abolition of the 13 and 20 WPM tests *

------------------------------

Date: Tue, 11 Jan 1994 23:23:57 GMT
From: mulvey![e-mail]
Subject: Ramsey kits not too good
To: [e-mail]

Steve Bunis SE Southwest Chicago ([e-mail]) wrote:

: Just to mix up the pot abit more -  Just talked with a local ham
: who bought and put together the Ramsey 2 meter amplifier kit.  He
: was on the air with it last night and sounded very good.  I asked
: him if he had run into any problems with construction, design etc.
: and he claimed it came up and worked the first time.  He was very
: happy with it.  His total cost (kit + case & misc.) came to just
: under $50.

: Now I understand that this design is much less complex than building
: a transceiver, but it sounds like you need to pick and choose which
: kits to buy, and which to avoid.

   Ask him again after he puts it on a spectrum analyzer.

- Rich

--
Rich Mulvey                 Amateur Radio: N2VDS              Rochester, NY
[e-mail]           "Full power on half a watt."

------------------------------

Date: 12 Jan 94 15:50:23 GMT
From: ogicse!emory!gatech!howland.reston.ans.net!vixen.cso.uiuc.edu!moe.ksu.ksu.edu![e-mail]
Subject: Ramsey Kits Revisited
To: [e-mail]

Posted for a friend w/out net access:

He's building a Ramsey FX440 kit, and having problems with the transmit.
It appears to receive fine, but according to him, something is wrong with
the transmit buffer.  I'm not very knowlegable about the internal workings
of a radio (yet), but any help from anyone working on or has built one of these
would be greatly appreciated.  Reply via e-mail to me (until the 14th) or to
[e-mail] (after that).  Thanks for any help!

Jeremy Utley

PS... If you end up mailing to the second address, put on the first line:
For:  Van Zander

Thanks again!

------------------------------------------------------------------------------
Jeremy L. Utley                   | [e-mail]
Computing & Infomation Sciences   | [e-mail]
Student                           | [e-mail]
Kansas State University           | bxth85a   (Prodigy)
A.S. Comp. Sci. & Acctg.          | N0YAX@N0OER.#NEKS.KS.USA.NA (Packet Radio)
------------------------------------------------------------------------------

------------------------------

Date: 13 Jan 1994 11:07:33 GMT
From: dog.ee.lbl.gov!agate!garnet.berkeley.edu![e-mail]
Subject: Signaling Device Wanted
To: [e-mail]

My wife, daughter, and myself have carried pagers for over 10 years.
They are very useful for keeping in touch.  Recently we have become
frustrated by the inability to find a public phone which is working,
not limited to outgoing calls, and not in use by a drug dealer.  It seems
well less than half of the phones are available.  Also, my wife drives about
45 minutes to and from her office and we would like to be in touch with
her during that time.

Since we have HAM licences, at HT for each person seems like a good
possibility.  Some sort of digital squelch could be used.  But they
both feel the HT is too big and heavy.  I have pushed for that solution
for years.  I have also suggested our own patch to the phone line and
our own phone-answering machine in the loop.

Pocket portable phones seem a possibility, but the cost nears $100 a month
for each if you consider connect charges, instrument cost, and
instrument protection from theft.

We have developed a series of codes which work fine for us.  1 means
"Everything is fine, I am where I should be, and on schedule."
1514 means "change the time to 15:14."

What they say they want is a device that can receive a few numbers
like the pagers, and one that can send a few like an HT.  The notion
of some sort of digital attachment for a small HT comes to mind.
(My interpretation is that they prefer asynchronous (read and send
at different times) rather than synchronous communication like a telephone
which they feel is intrusive.  With the pagers you can get a message and
make a decision about when to respond.)

Does anyone have any suggestions?

------------------------------

Date: 13 Jan 94 03:07:55 GMT
From: ogicse!flop.ENGR.ORST.EDU!xanth.CS.ORST.EDU![e-mail]
Subject: Vaccuum Tubes, Lots of them!
To: [e-mail]

The Oregon State University Amateur Radio Club has a couple thousand vaccuum
tubes.  These tubes vary from military/commercial, new/used, and in original
boxes.  We hope to sell the tubes in a lot to form an annuity for the club to
use for future developments.  I have a list made up that lists the tubes,
quantity, quality, and which box they are in.  If you are interested, send me
mail with the subject "osutubes" for an automatically generated reply
containing the inventory.  Your message will not be received by me unless it
has a different subject.

We only want to sell as a lot.

Darrek Kay
[e-mail]
[phone]

------------------------------

Date: 12 Jan 1994 15:44:34 GMT
From: munnari.oz.au!spool.mu.edu!howland.reston.ans.net!europa.eng.gtefsd.com!darwin.sura.net!news-feed-2.peachnet.edu!concert!bigblue.oit.unc.edu!samba.oit.unc.edu![e-mail]
Subject: Vintage 50's station for sale
To: [e-mail]

For Sale:

TX- EF Johnson Viking Valiant II (Mint) 250 watts am/cw transmitter with
full manuals and docs (even the warranty card)

RX- R390a Receiver (Very Good) recently retubed, realigned, lubed, painted
with silkcreen and fully cleaned. The classic receiver with manuals

Acces: EF Johnson 250 watt Matchbox in fair condition. Was repainted but
left decals
    Millen 10 m preamp tubed in very good condition

Make me an offer I can't refuse or It will appear at Dayton in April...
de ab4vj   terry

[phone] days/[phone] after 2100 UTC
[e-mail]


--
   The opinions expressed are not necessarily those of the University of
     North Carolina at Chapel Hill, the Campus Office for Information
        Technology, or the Experimental Bulletin Board Service.
           internet:  laUNChpad.unc.edu or 152.2.22.80

------------------------------

Date: 13 Jan 94 08:12:28 GMT
From: ogicse!uwm.edu!cs.utexas.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!airwaves![e-mail]
Subject: WANTED: 1930's Vacuum Tubes for display
To: [e-mail]

Hello! I'm looking for 1930s era water cooled vacuum tubes.
I'm, trying to help out a German friend's "world-class" tube
collection.

Ideas? comments? Thoughts?
Drope me a line.

Thanks for any help
Rich Biby

------------------------------

Date: 12 Jan 1994 16:44:10 GMT
From: vtserf.cc.vt.edu![e-mail]
Subject: WANTED:  Info on Standard C5718DA
To: [e-mail]

Hi,

I'm interested in Standard's C5718DA dual-band mobile rig and
would like to hear from anyone who has experience with it.
I'm looking for a rig that I can mount under my car seat
and operate from the mic so that I don't have to mount a
control head on the dash.

Please e-mail if you have any knowledge of this rig.

Thanks, Benjy

--
Benjy Cline, AC4XO
Virginia Tech Computing Center
[e-mail]

------------------------------

Date: 12 Jan 1994 21:14:17 GMT
From: olivea!koriel!newscast.West.Sun.COM!cronkite.Central.Sun.COM!webrider![e-mail]
Subject: WANTED:  Info on Standard C5718DA
To: [e-mail]

In article [e-mail], [e-mail] (Ben E. Cline) writes:
> Hi,
>
> I'm interested in Standard's C5718DA dual-band mobile rig and
> would like to hear from anyone who has experience with it.
> I'm looking for a rig that I can mount under my car seat
> and operate from the mic so that I don't have to mount a
> control head on the dash.

I bought one of these about 4 weeks ago and I LIKE IT!!!  I've been
getting excellent signal reports, and have heard others using the
Standard on the air with excellent sound quality.

One of the main reasons I bought this model is the microphone setup.
I do exactly what you're planning on, I put the radio under the seat
(I will eventually install it in the trunk) and use the microphone
controls which are full featured.  The Display on the microphone is
very easy to read, the labels are backlit (are actually translucent
so light from within the microphone shines thru them), and using the
features becomes very easy after a short period of acclimation.  How
often do you run into a radio where a control head is an option?  :^)

I have yet to run across any Intermod problems.  In fact one of the
reasons I first looked at the Standard was from hearing that they were
much less susceptible than most other brands (something to do with
them using a different IF).  The only Intermod I've heard since I bought
this radio has come over the airwaves from someone else.

This model comes packet (9600 baud) ready, but I really can't say
anything about that as I don't do packet yet.  It has a wide range
of scanning capability (100MHz-199.99MHz including AM capability,
250MHz-499.99MHz, and 800MHz-999.99MHz)

So far I, and another user, have only run into two issues that we
consider problems.  The biggest one is that, at present, when using
crossband repeat mode the output won't include a PL tone.  The other
is that there seems to be no direct way to pull a frequency in memory
into VFO mode (Scanners often do this with one or two keystrokes). You
instead have to enter the freq. manually (no big deal).  We have talked
with Standard about these, and Standard is apparently going to have a
fix for the PL problem sometime in February (for free of course :).  I'm
not sure about the Memory->VFO issue yet.

Overall, I'm extremely pleased with the radio.  It ain't cheap but works
real fine.

73,

---
--
-- Steve Bunis,  Sun Microsystems  ***DoD #0795***      93-ST1100
--               Itasca, IL       ***AMA #682049***
--                 ***HRCA #HM125617**
--                    *** N9VLP ***

------------------------------

Date: Wed, 12 Jan 94 15:39:11 GMT
From: swrinde!cs.utexas.edu!uwm.edu!rpi!newsserver.pixel.kodak.com!kodak![e-mail]
To: [e-mail]

References <[e-mail]>, <[e-mail]>, <2gv1l8$[e-mail]>
Subject : Re: Fm Broadcast (Legal Part 15 power levels)

In article <2gv1l8$[e-mail]> [e-mail]
(Michael Gentle) writes:
>Al you are correct, I did not mention low power. IF you use less then 100mw and
>a antenna for less then 5' in length then I beleive that it is legal. I thought
>that a higher power was implied though.

You would think that amateur radio operators would know the rules better than
this.  Part 15 of the FCC R&R's governs unlicensed transmitters.

Fellow hams...
PLEASE stop propagating these myths.

The Part 15 rules give the maximum permissible field strength at a specified
distance from the antenna.  For transmissions in the FM broadcast band, the
numbers are 250 microvolts per meter measured at three meters.  Note that
this is a near-field measurement.  For a ground-plane antenna, the necessary
power to achieve this field strength is approximately 3 NANOWATTS.  For a
dipole antenna, 6 NANOWATTS will be the maximum permitted power.

Many commercial wireless microphones and FM home-broadcaster kits far exceed
these power levels and are illegal to use by FCC rules.

                    73, Barry  WA4VZQ
 -----------------
|  ___  ________  |    Dr. Barry L. Ornitz          WA4VZQ
| |  / /        | |    Eastman Chemical Company
| | / /         | |    ECC Research Laboratories, Engineering Research Div.
| |< < K O D A K| |    Process Instrumentation Research Laboratory
| | \ \         | |    P. O. Box 1972, Building 167B
| |__\ \________| |    Kingsport, TN  37662  (615/229-4904, FAX [phone])
|                 |    INTERNET:   [e-mail]
 -----------------
Eastman Chemical is no longer a part of Kodak.  Until we get our own Internet
connection Kodak has been gracious to continue to let us use hers.

------------------------------

Date: Wed, 12 Jan 94 16:21:36 GMT
From: mnemosyne.cs.du.edu!nyx10![e-mail]
To: [e-mail]

References <[e-mail]>, <[e-mail]>, <2guq97$[e-mail]>
Subject : Re: Repeater database?

In article <2guq97$[e-mail]>,
W. M Wood -- The Signal Group <[e-mail]> wrote:
>>The reason for this is simple: if we didn't keep it
>>confidential, we wouldn't get the data either.
>More BS....

Ask Brian Kantor about that.
...or, for that matter, the majority of repeater trustees.

> The REAL reason this information isn't given out is that
>Cordination Groups want to wield their coordination POWER without
>fear of any questioning their declarations. With all the data on
>a repeater (lat/lon/haat/erp , etc ) you could challenge or even
>ignore their refusal to coordinate a repeater on a frequency you
>have chosen.

This sounds like the ravings of somoene who had a coordination denied, or who
wants to start a repeater war and not have the FCC come explain the situation
to him. You obviously have not been on the other side of the table.

> I suspect less than 1% of the so called coordinated
>repeaters in operation today have any sort of REAL engineering
>study including contour maps done on them. Most have been 'coordinated
>' by either first come first served ---- or Good Ole Boys Network
>methods.

First come first served is the only way that coordinators can operate and not
get their collective butts sued off.  Don't believe me? I've been there,
again, and so have others.  As for the kind of real engineering studies you
advocate, do you know how much time and effort goes into producing a contour
map? Multiply that by a thousand repeaters in Texas. It's prohibitive. We
coordinate repeaters based on 85-mile seperation, and will waive that if the
trustee of the existing system will agree in writing.

>This information is publicly available for EVERY commercial radio
> and televion station in the USA and there is absolutely no reason  other
>than small minded POWERMONGERING  politics that this isn't available
>for amateur repeaters.

How about time and money? Are you volunteering to run all those contour
studies, or pay to have them done?

>I dare ANY so called coordinating group to prove me wrong by PUBLISHING
>there engineering studies for all their "coordinated" repeaters.

They don't exist to the degree you want, nor are they ever likely to in the
amateur service.

>All we'll probably hear is eithe silence or a crescendo of flames
>about how their "integrity " has been insulted....but the engineering
>studies generally don't exist so we will never see them!

No flames about integrity here; just cold, hard reality. Then again, you sound
like you've been hit by reality before, and didn't like it.
--
Jay Maynard, EMT-P, K5ZC, PP-ASEL | Never ascribe to malice that which can
[e-mail]      | adequately be explained by stupidity.
        "A good flame is fuel to warm the soul." -- Karl Denninger

------------------------------

End of Info-Hams Digest V94 #32
******************************