Topband: Beverage feed line...too long?

[Jim Brown]

On Mon, 17 Sep 2007 21:55:07 +0200, Alessio Sacchi wrote:

>Are both the K9AY and BEV having common mode interference through
>the feedline?

I can't speak for the K9AY (but he's here to speak for himself). For 
the Beverage, the answer is YES. A choke formed by winding 7-10 
turns of the coax through a 2.4 inch diameter toroid of #31, #77, or 
#78 Fair-Rite material would reduce that coupling a lot. 

See http://audiosystemsgroup.com/RFI-Ham.pdf

73,

Jim Brown K9YC