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Re: [TowerTalk] CMC-230-5K

To: towertalk@contesting.com
Subject: Re: [TowerTalk] CMC-230-5K
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 19 Apr 2016 16:41:39 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hi John,

The answer is no if you have already grounded the coax before it gets into the shack (for example, in an entry panel).

But as I noted in my response to K6UJ, there are good reasons for using an additional choke on the coax outside the shack -- to improve power handling by dividing common mode voltage between two chokes, or to have a second choke serve as an "egg insulator" to prevent interaction with a nearby vertical antenna by break up the feedline.

73, Jim K9YC

  On Tue,4/19/2016 2:48 PM, john@kk9a.com wrote:
If you have a good choke at the antenna and good coax, is there a reason for
having another choke inside the shack?

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