QRZ! Ham Radio 4/QRZ Ham Radio Callsign Database - Volume 4.iso/digests/antenna/940064.txt

Internet Message Format | 1994-11-13 | 12KB

Date: Mon, 14 Mar 94 04:30:17 PST
From: Ham-Ant Mailing List and Newsgroup <[e-mail]>
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Subject: Ham-Ant Digest V94 #64
To: Ham-Ant


Ham-Ant Digest              Mon, 14 Mar 94       Volume 94 : Issue   64

Today's Topics:
                             1296 Antenna
                    Best cars for mobile HF/VHF??
                  Best truck/sport util for HF/VHF?
             Diesel or Taurus fr HF/VHF mobile?? (2 msgs)
                 Looking for dual band j-pole design
                            portable yagi
                              subscribe
             variable phase shifters, time delay elements
                         Wanted Yaesu G-5400B

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 Ham-Ant Digest are available
(by FTP only) from UCSD.Edu in directory "mailarchives/ham-ant".

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: Sun, 13 Mar 94 12:58:40 PST
From: ihnp4.ucsd.edu!usc!elroy.jpl.nasa.gov!nntp-server.caltech.edu!mustang.mst6.lanl.gov!newshost.lanl.gov![e-mail]
Subject: 1296 Antenna
To: [e-mail]

I just bought my first 1296 rig and naturally have no
antenna. I am looking for input on what to get and/or
wanting to buy one. I have hade recommended to the the
loop Yagi from Down East Microwave. Opinions and offers
will greatly appreciated.

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

Date: Sun, 13 Mar 94 16:42:44 GMT
From: mnemosyne.cs.du.edu!nyx10![e-mail]
Subject: Best cars for mobile HF/VHF??
To: [e-mail]

In article <[e-mail]>,
Gary Coffman <[e-mail]> wrote:
>Look at what the cops are driving. Ford Crown Victorias seem popular
>with them, as do Chevy Caprices.

There's a brand new '94 Crown Vic with police package sitting in my driveway
as I type this, courtesy of the EMS I run with. All I can say is...WOW!!!
(Unfortunately, I have to pass it along at the end of my shift...)

> Order your's with the same fleet codes
>that they use and you'll have a car that works well with radios.

I thought mere mortals couldn't buy cars with those fleet codes.
--
Jay Maynard, EMT-P, K5ZC, PP-ASEL | Never ascribe to malice that which can
[e-mail]      | adequately be explained by stupidity.
"The difference between baseball and politics is that, in baseball, if you
               get caught stealing, you're out!" -- Ed Shanks

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

Date: 13 Mar 1994 20:10:38 -0500
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!wupost!udel!news.udel.edu!brahms.udel.edu![e-mail]
Subject: Best truck/sport util for HF/VHF?
To: [e-mail]

Thanks for your input on cars etc. so far.

I have narrowed my thinking to a small pickup or sport utility such as
Bronco, Trooper, etc., probably 86 to 91.

I am told that American cars have less solid state devices to go awry
due to RF from HF or VHF rigs, that Ford seems to be a good choice, that
Japanese vehicles may be more susceptible to RF.

Again, besides physical comfort (my back) criteria include lack of problems
from car to rig and vice versa, and other normal concerns.

All input welcomed. Thanks again.  Bob

--
Bob Penneys, WN3K   Frankford Radio Club  Internet: [e-mail]
Work: Ham Radio Outlet (Delaware) [phone];  fax [phone]
Mail at home:  12 East Mill Station Drive   Newark, DE 19711  USA

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

Date: Sun, 13 Mar 1994 13:43:56 GMT
From: ihnp4.ucsd.edu!swrinde!emory!wa4mei!ke4zv![e-mail]
Subject: Diesel or Taurus fr HF/VHF mobile??
To: [e-mail]

In article <2lr2dj$[e-mail]> [e-mail] (Robert Penneys) writes:
> I got a variety of responses for a car which would be good for 100 watts
>or so of HF and 50 or so of 2 meter and 440 radio. Criteria were lack of
>interference from car into receiver and from transmitter into auto
>electronics.
>
>Diesels and the Taurus were among those favored. Anyone else have comments
>on these choices.

People often say to buy a diesel because it won't generate any RFI. I wish
they could have owned my diesel Nissan pickup. It had the most horrendous
RFI I've ever experienced in a vehicle. There was a severe popping noise,
similar to really severe ignition noise, any time the engine was running.
I could disconnect the alternator belt and the battery (after starting the
engine), and the noise was still there with no vehicle electrical equipment
operating at all. It got into everything from the entertainment radio to
HF, VHF, and UHF ham gear.

I tried every trick I know, (and I thought I knew them all), without
any success. The dealer couldn't fix it. The zone office couldn't fix
it. I even talked to factory engineers in Japan. Everyone was stumped.
I finally sold the vehicle back to them and bought a Jeep pickup. Aside
from some alternator whine, which I fixed with a choke, it's generated
no RFI from it's 6 cylinder gasoline engine.

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

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

Date: Sun, 13 Mar 1994 16:42:59 GMT
From: world![e-mail]
Subject: Diesel or Taurus fr HF/VHF mobile??
To: [e-mail]

In article <[e-mail]> [e-mail] (Gary Coffman) writes:
>In article <2lr2dj$[e-mail]> [e-mail] (Robert Penneys) writes:
>> I got a variety of responses for a car which would be good for 100 watts
>>or so of HF and 50 or so of 2 meter and 440 radio. Criteria were lack of
>>interference from car into receiver and from transmitter into auto
>>electronics.
>>
>>Diesels and the Taurus were among those favored. Anyone else have comments
>>on these choices.
>
>People often say to buy a diesel because it won't generate any RFI. I wish
>they could have owned my diesel Nissan pickup. It had the most horrendous
>RFI I've ever experienced in a vehicle. There was a severe popping noise,
>similar to really severe ignition noise, any time the engine was running.
>I could disconnect the alternator belt and the battery (after starting the
>engine), and the noise was still there with no vehicle electrical equipment
>operating at all. It got into everything from the entertainment radio to
>HF, VHF, and UHF ham gear.

Ignition noise is often NOT the problem. It is very possible that the
engine used fuel injection (solenoids, square wave pulses), an electronic
fuel pump (my Pathfinder has a noise problem from the fuel pump), and
a computer system. So getting a diesel is not likely to be a big help. Now
in the old days of mechanical fuel pumps, carbs, etc. it might have been
fine...

>
>I tried every trick I know, (and I thought I knew them all), without
>any success. The dealer couldn't fix it. The zone office couldn't fix
>it. I even talked to factory engineers in Japan. Everyone was stumped.
>I finally sold the vehicle back to them and bought a Jeep pickup. Aside
>from some alternator whine, which I fixed with a choke, it's generated
>no RFI from it's 6 cylinder gasoline engine.
>
>Gary
>--
>Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
>Destructive Testing Systems |    we break it.     | uunet!rsiatl!ke4zv!gary
>534 Shannon Way             |    Guaranteed!      | emory!kd4nc!ke4zv!gary
>Lawrenceville, GA 30244     |                     |


--
---------------------------------------------------------------
Daniel Senie                 Internet:     [e-mail]
Daniel Senie Consulting                    [e-mail]
508-365-5352                 Compuserve:   74176,1347

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

Date: 14 Mar 1994 05:40:26 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!vixen.cso.uiuc.edu!newsrelay.iastate.edu!news.iastate.edu![e-mail]
Subject: Looking for dual band j-pole design
To: [e-mail]

Im looking for any references to a dual band antenna in any of the ham mags.
If anyone has any references on the thing drop me some mail with the month and
the mag and I will be in youre debt.


-Brant


______________________________________________________________________________    Brant Wehr N0UTT
     internet [e-mail]
        Activities Director  CARC
            Electrical Engineering
______________________________________________________________________________

--
Brant
[e-mail]

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

Date: Mon, 14 Mar 1994 00:15:59 GMT
From: ihnp4.ucsd.edu!usc!sol.ctr.columbia.edu!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!suncad!freenet.Victoria.BC.CA![e-mail]
Subject: portable yagi
To: [e-mail]

I am a relatively new ham, and I wish to construct a portable
yagi (if such a thing exists) for 146.84 mHz - I want to be
able to collapse it and carry it in a pack. I haven't built
an antenna before, and so I've read through an ARRL handbook
to learn a bit more on the subject... I find the knowledge
I obtained to get my basic qualification to be unsatisfactory
and that there is a lot I need to know. If anyone has plans
for a portable yagi (or if they know the feasibility of
such a project) please let me know.

I read through a table of values for lengths of the various
elements (ref,driven,dir) and I found 2 meter Yagi's to be
quite large (ie. 3 dir. yagi has a boom length of about 5.5'
and elements of around 3.5'). I suppose what I want is the
fewest number of elements possible (to cut down size) and I
need a good way to have the boom/elements broken into two
pieces with a good way to re-attach them to get the overall
length of all the pieces about the size of tent poles.
Anyways, you get the idea.

Please let me know if you can help...

-ed

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

Date: 14 Mar 94 19:23:00 GMT
From: [e-mail]
Subject: subscribe
To: [e-mail]

subscribe

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Date: Mon, 14 Mar 1994 09:45:59 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!pipex!lyra.csx.cam.ac.uk!pavo.csi.cam.ac.uk!pmms.cam.ac.uk![e-mail]
Subject: variable phase shifters, time delay elements
To: [e-mail]

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

|> mechanical nightmare to support properly. At lower frequencies,
|> a goniometer would probably be easier to make.
|>
|> Gary
|> --

Pardon my ignorance, but what's a goniometer?
And does `lower frequencies' here include, say, 100MHz?

Andrew Thomason

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

Date: Sun, 13 Mar 94 13:01:03 PST
From: ihnp4.ucsd.edu!swrinde!elroy.jpl.nasa.gov!nntp-server.caltech.edu!mustang.mst6.lanl.gov!newshost.lanl.gov![e-mail]
Subject: Wanted Yaesu G-5400B
To: [e-mail]

As the subject implies I am in the market for
a Yaesu G-5400B azimuth/elevation rotor for my
fledgeling satellite station. Before buying a new
one I thought I ask if anyone has one to sell. Drop
e-mail to [e-mail] or phone [phone] home
[phone] office

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End of Ham-Ant Digest V94 #64
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