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Re: [TowerTalk] Ferrite Balun on a LPDA?

To: "Clint Talmadge" <>,<>
Subject: Re: [TowerTalk] Ferrite Balun on a LPDA?
From: "Tom Rauch" <>
Reply-to: Tom Rauch <>
Date: Thu, 14 Jun 2007 16:32:57 -0400
List-post: <>
>I am close to putting my Tennadyne T-6 back up. When I took 
>it down it had the prescribed Coax Balun on it and it 
>showed it's age. For the last month or so I have had the 
>antenna on a short perch in the yard with a Ferrite Bead 
>Balun on it and it sweeps fine using an analyzer and I have 
>even made a few DX contacts on it. The balun I am using is 
>a W2AU by Unadilla. I have searched different archives and 
>the only one with any significant information is one I 
>started on eHam some years ago.The old Tennadyne maker 
>specifically said he had not tested a ferrite balun and did 
>not recommend them. The reasons I would like to use the 
>Ferrite Balun are:


Watch how you run the coax. If you use a balun and then tape 
the coax to the boom (which is hot) you totally defeat the 
reason for having a balun. If you tape the coax to the boom 
the balun needs to be at the point where the coax leaves the 
boom to go to the tower, not out at the feedpoint, and the 
coax needs to be routed down the boom tied to the shield.

73 Tom 


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