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Re: Topband: Commond mode choke for Beverage

To: topband@contesting.com
Subject: Re: Topband: Commond mode choke for Beverage
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Mon, 12 Oct 2015 08:36:17 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
On Mon,10/12/2015 5:45 AM, Filipe Lopes wrote:
I am about to add a common mode choke to isolate the antenna from its
feedline to each of my beverages and I only have FT240-61 ferrites.

#61 is a terrible material for use as a common mode choke below 500 MHz. Try to find #31 or #43, and wind LOTS of turns.

73, Jim K9YC
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