To: | topband@contesting.com |
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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 _________________ Topband Reflector Archives - http://www.contesting.com/_topband |
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