Actually the F/B of a 15m beam is very effected by a nearby 20m, since the
20m directors look a little like reflectors on 15m. This is can be clearly
seen in a model and it has nothing to do with the boom length.
John KK9A
To: " <TOWERTALK@contesting.com>
Subject: Re: [TowerTalk] Yagi designs?
From: "jeremy-ca"
Date: Thu, 19 Jul 2007 17:55:05 -0400
List-post: <mailto:towertalk@contesting.com>
Only when the antenna elements share a resonance 20/10; 40/15. Booms were
mostly overlooked until computers came along in everyones home and office.
Many manufacturers continued schleping the same tired design until new
upstart companies with computers showed them up. W2PV used an IBM mainframe
and was the first of the new breed.
Carl
KM1H
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