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Re: Topband: Beverage Feed Line Choke Installation

To: "Missouri Guy" <>, "" <>
Subject: Re: Topband: Beverage Feed Line Choke Installation
From: "Jim Brown" <>
Date: Tue, 02 Jun 2009 10:09:40 -0700
List-post: <">>
On Tue, 2 Jun 2009 17:33:20 +0100, Missouri Guy wrote:

>Other than that, how would I really know if the chokes are needed or

Do A/B tests with the antenna connected, switching the chokes in and out 
of the circuit. Symptoms of good performance -- deeper nulls of off-axis 
signals and/or less noise. Should not affect the desired signal. 

BTW -- as the discussion with Carlos has suggested, it matters what the RX 
antenna is and what the coupling system is. That is, a Beverage may be 
more susceptible to coupling than a pennant, or a pennant may require a 
higher choking impedance. And one transformer may have more stray C 
between windings than another. That's why I agree with Carlos's "brute 
force" solution. It's easier to do it than it is to figure out if it's 
overkill. :)   


Jim K9YC

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