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Re: [TowerTalk] Resonant boom

Subject: Re: [TowerTalk] Resonant boom
Date: Sun, 24 Oct 2010 08:33:58 EDT
List-post: <">>
Since the 20m elements are insulated, would installing a ground strap to an 
 element near the boom detune things enough to work?
Could an additional "dummy" element or elements be added temporarily  for 
Or, Install back to back gamma rods on the boom (near the mast) to create a 
 resonant circuit? Sort of like the technique to detune towers on lower  
Probably too much work to set up the 20m boom as a 75m dipole like the old  
TH6 loaded boom trick from years ago.
Or, finally, a big old autotuner for the 40m beam, heh-heh!
Gerald K5GW
In a message dated 10/24/2010 1:26:47 A.M. Central Daylight Time, writes:

Thanks  for all the responses!  Still looking for something I can do,   
even temporarily, without taking it down.

Thanks...Stan,  K5GO

Sent from Stan's IPhone

On Oct 23, 2010, at 8:04  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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