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Re: [TowerTalk] Current Choke for Ladder Line

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Current Choke for Ladder Line
From: Tom Osborne <w7why@frontier.com>
Date: Tue, 12 May 2015 13:16:26 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Very true.

The OCF is an unbalanced antenna, compared to a center fed, which is balanced (supposedly). 73
Tom W7WHY



On 5/12/2015 1:14 PM, Bry Carling AF4K wrote:
I would think that the OCF is FAR more likely to radiate off the feedline than 
a conventional
dipole in most circumstances.

On 12 May 2015 at 14:01, Hans Hammarquist via TowerTal wrote:

Gentlemen,


I have seen many articles how to build and/or buy common mode chokes for coax 
cables but I don't remember any articles how to build (or buy) and choke for a 
400 ohm ladder line.


The common mode current on a ladder line is causing the same problem as a 
common mode current on a coax. i have a choke between my tuner and radio which 
reduced noise quite good but wonder now how much RF power I radiate and signal 
I receive from the CM current in the feeder to my OCF dipole.


Any ideas/comments?

Hans - N2JFS

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