[TowerTalk] 20 meter yagi suggestion

[john at kk9a.com]

The Hy-Gain 205CA has a 34 foot boom and it is an old design. I am sure that
it works fine however you could throw away one of the elements and still
have the same gain. In fact you can build a more modern direct feed 50 ohm
OWA 4el 20m yagi on a similar boom length.

John KK9A

To:	towertalk at contesting.com
Subject:	 Re: [TowerTalk] 20 meter yagi suggestion
From:	 Herbert Schonbohm <herbert.schoenbohm at gmail.com>
Date:	 Thu, 17 Apr 2014 17:51:29 -0400
List-post:	 <towertalk at contesting.com">mailto:towertalk at contesting.com>
I did these optimizations about 15 years ago and both, if I recall correctly
require boom extensions and a Phyllistran support for the boom to the mast
to reduce the boom droop. I can't say that the work to do this was worth
.5db of gain improvement.

Herb Schoenbohm, KV4FZ


On 4/17/2014 10:25 AM, Joe Subich, W4TV wrote:

Recent editions of the ARRL Antenna Book contain optimized dimensions
for both the 205BA/CA and 204BA as well as the 155BA and 105BA/CA.

73,

   ... Joe, W4TV