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Re: [TowerTalk] 4 square for 80

To: n2ic@arrl.net, towertalk@contesting.com
Subject: Re: [TowerTalk] 4 square for 80
From: Rik van Riel <riel@surriel.com>
Date: Mon, 26 Sep 2016 10:41:27 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On Mon, 2016-09-26 at 08:35 -0600, Steve London wrote:
> 
> Okay, let's put in those K9YC multiturn chokes at each feedpoint.
> This 
> provides a -resistive- load to the common mode path. In fact, these 
> chokes can get pretty warm. So, the way I see it, putting in common
> mode 
> chokes does nothing to reduce the system power loss that K2AV is so 
> concerned about.

The thing about resistive common mode chokes is, the higher
their impedance, the lower the amount of power lost.

Put a choke with over 1000 ohms of impedance into an antenna
system with 35 ohm impedance, and the losses will be quite
small.

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