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Re: [TenTec] [Fwd: Line Isolator Balun (sorta) question.]

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] [Fwd: Line Isolator Balun (sorta) question.]
From: Steve Hunt <steve@karinya.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 09 Aug 2010 19:59:07 +0100
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Dressing the feedline at right angles to the dipoles stops *induced* 
common-mode current, but it does nothing to stop *conducted* common-mode 
current if the feedline is coax. The model I investigated on my website 
has perfect physical symmetry, but it still has high common-mode current.

Steve G3TXQ

Dr. Gerald N. Johnson wrote:
> Feedline at right angles to the dipole is a way to not need a choke, but 
> that's not often achieved. Then the feed line couples more to one side 
> of the dipole and that induces unbalanced feed line currents without chokes.
>   

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