Gary... the array you are talking about was made by Hy-Gain... the boom was
Rohn 45 (not 25) and the boom was longer than 64'... don't remember the
exact dimensions.
We used Hughey's to put our up... the entire tower rotated for directivity.
We (our units) used 'em in the same 'scenic' vacation spot you were in plus
the Persian Gulf war.
Had capabilities of running 10 kw on all frequencies... of course, I... uh
we... never put the 'rig' on the ham bands... was not allowed in a battle
theatre
All the best.... & 73,
Paul McInnish - K4BET
CSM - USAR (ret)
335th SigCmd
----- Original Message -----
From: <blueis@sprintmail.com>
To: <w5kp@swbell.net>; <poster@gate.net>; <towertalk@contesting.com>
Sent: Wednesday, September 19, 2001 11:27 AM
Subject: Re: [TowerTalk] Anyone ever make large LOG antenna to cover 10-30?
>
>
> The Commo Section at our Da Nang Headquarters used a LARGE (emphasize L A
R
> G E) LPA. Boom was about 64' and *appeared* to use Rohn 25 as the boom
> material!! I *think* the elements were all interconnected in a letter "Z"
> arrangement. It featured a "skirt" that extended freq coverage from 4 MHz
> to 30 MHZ. Looking back, I remember the "skirt" as a 'discone'
arrangement
> extending from the top of tower (beneath the LPA) to the ground. I was
only
> bootlegging back to the States then; I wasn't officially a ham and didn't
> pay that much attention. :-) [I can maybe find a picture if anyone is
> interested.] If you go to this web site
> http://home.earthlink.net/~specforces/index.html and choose the
Company
> C link on the left, you will see some of our antenna field.
>
> The LPA was usually used by the RTTY section. The lowly CW operations
> section used the KWM-2A, 30L-1,and dipoles. RTTY, on the other hand, used
> the KWM-2A, the 30S-1, and the LPA. Every once in a while (while I was on
> the graveyard shift) I would reconfigure the equipment -- 30S-1 and LPA
for
> me! I would call CQ de 3w8gb. The radio would go silent... even the
static
> stopped. Another CQ would result in half the world calling me. My ERP?
> Oh, about 16Kw!! Musta sounded like the second coming of the Lord!
...from
> 3w8, a 'banned' country!! Did I work any of you guys??
>
> Nice intro to ham radio, huh? :-)
>
> Gary B
> k3gb
> 'RVN BTO'
>
>
> Jerry scribed....
>
> > The military and DoD use some humongous LPA's. As I recall, ours (Navy
> Comm
> > Station) were good for 8-32 mhz. FAA also uses them. They are extremely
> > large and use a pretty good sized tower section for a boom. I think
> Hy-Gain,
> > and maybe several others make them. Don't remember how long the booms
> were,
> > but had to be at least 60'. BIG bucks to buy one, I suppose big bucks
also
> > to build one. I never got a close look at the rotators, but I'd like to
> see
> > one. These things had to weigh over a thousand pounds. If you build one
> I'd
> > like some photos!
>
>
> List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
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>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
>
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
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