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Re: [TowerTalk] Resonant boom

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Resonant boom
From: David Gilbert <xdavid@cis-broadband.com>
Date: Sat, 23 Oct 2010 20:37:12 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hi, Stan.

How about adding some "spikes" (like a capacity hat) to the end of the 
boom to add capacitive loading?

73,
Dave   AB7E




On 10/23/2010 6:04 PM, Stan Stockton wrote:
> Anyone by chance have an easier to accomplish idea other than one I
> remember being suggested to someone else with a similar problem -
> fishing a wire through a hole near the center of the boom and letting
> it hang out the end.  I can watch the SWR on my 40 meter antenna go
> from 1.2/1 to 2.0/1 just by turning the rotatable 40m Yagi or the 20m
> Yagi which is about 175 feet away and 65 feet lower.  Boom is 65 feet
> and elements are insulated.
>
> Lesson learned on boom lengths...
>
> I would prefer to fix it with the least amount of work.  I can
> probably do the wire thing on one side but not the other due to an
> weight-balance obstruction.  Hate to have about 15 feet of wire
> hanging out if the back of the boom.
>
> Thanks...Stan, K5GO
>
> Sent from Stan's IPhone
>
>
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