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Re: Topband: Placement of RX feedline chokes

To: Topband <Topband@contesting.com>
Subject: Re: Topband: Placement of RX feedline chokes
From: shristov <shristov@ptt.rs>
Date: Wed, 03 Feb 2016 20:02:51 +0100
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Herbert Schoenbohm <herbert.schoenbohm@gmail.com> wrote:

> where is the best placement for for a feed-line choke?


At each point where the common to differential mode conversion is likely to 
happen.
In other words, where the current on the outside of coax shield is likely to 
get inside coax.

Primary target points are those where the coax [potentially] opens to the outer 
world:
antenna end, station end, coax extension joints, and similar.

In addition, placing several chokes at lambda/4 distance from each other
will make it difficult to develop large coax shield currents in the first place.


73,

Sinisa  YT1NT, VE3EA

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