[TowerTalk] Need info & manual on 20 meter beam

[Arne Gjerning]

Computer modeling may improve the design.  It would be interesting to see
what does happen.  Construction wise, and this I can not remember, if
elements are mounted thru the boom as TELREX did then extra mechanical work
needed for mounting of elements and possibly re-inforcing of the boom.

Hope Chuck gets needed manual and maybe he can provide info for someone to
model.

73 de Arne N7KA
----- Original Message -----
From: "Pete Smith" <n4zr at contesting.com>
To: "Arne Gjerning" <gjerning at flash.net>; "Bob Nielsen" <nielsen at oz.net>;
<towertalk at contesting.com>
Sent: Tuesday, August 19, 2003 1:01 AM
Subject: Re: [TowerTalk] Need info & manual on 20 meter beam


> At 11:01 PM 8/18/03 -0600, Arne Gjerning wrote:
> >The LJ-205CA is NOT anywhere near the same antenna.  What Chuck, N6PSN,
has
> >is the ORIGINAL LONG JOHN series 20M yagi from late 50s/early 60s.  He
> >described the yagi correctly as having a 46 ft boom; whereas the LJ-205CA
> >has ONLY a 34ft boom.  His antenna is built like a "MACK TRUCK" compared
to
> >the LJ-205CA.
>
>
> Isn't it likely that an antenna from that era can be usefully improved by
> computer modeling?
>
>
> 73, Pete N4ZR
> The World HF Contest Station Database was updated August 4.
> 123 stations were added or updated.
> Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
>
>
>