Hi all:
On LPY'S contact Pete Rhodes K4EWG. He lives in the Atlanta area. He had an
a very strong LPY station when he lived in Stone Mountain Ga. He also was
published quite a few times in QST and other publications in the 50's.
Bill Wall KC4UZ Antenna Mart
----- Original Message -----
From: "Jon Ogden" <na9d@speakeasy.net>
To: "Dino Darling" <k6rix@arrl.net>; <towertalk@contesting.com>
Sent: Wednesday, November 13, 2002 11:08 PM
Subject: Re: [Towertalk] OH my GOD...it's happened!!!
> on 11/13/02 8:35 PM, Dino Darling at k6rix@arrl.net wrote:
>
> > Force 12 makes LPDAs! I had an e-mail exchange with Force 12 a while
back
> > and was told Force 12 would NEVER build LPDAs! The reasoning I got was
> > that there is no advantage for the Amateur (I wanted it for Navy MARS)
and
> > that there were a few companies already making them. I was even pointed
to
> > Mr. Cebik to read about the performance of these antennas.
>
> While an LPDA is a great antenna (I worked for Dr. Paul Mayes who was one
of
> the inventors of the beast), I do question it's usefulness in the amateur
> world at HF.
>
> An LPDA has less gain than a Yagi and while it has significantly broader
> bandwidth, there's a lot of bandwidth covered that isn't particularly
> necessary to the ham. As you pointed out those who also work in the MARS
> bands will certainly find one more useful than a Yagi.
>
> I know some beams like the CC X7 use an LPDA type arrangement for the
driven
> elements and that probably does help beamwidth.
>
> But in an LPDA overall, most of the elements are not active at your
> frequency of use.
>
> I really don't know what one can get out of an LPDA that you cannot get
out
> of a well designed multi-band Yagi.
>
> I'd love to be enlightened.
>
> 73,
>
> Jon
> NA9D
>
> -------------------------------------
> Jon Ogden
> NA9D (ex: KE9NA)
>
> Citizen of the People's Democratic Republik of Illinois
>
> Life Member: ARRL, NRA
> Member: AMSAT, DXCC
>
> http://www.qsl.net/na9d
>
> "A life lived in fear is a life half lived."
>
>
> _______________________________________________
> AN Wireless Self Supporting Towers at discounted prices,
> See http://www.mscomputer.com
>
> Wireless Weather Stations now $349.95. Call Toll Free,
> 888-333-9041 for additional information.
> _______________________________________________
> Towertalk mailing list
> Towertalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
|