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Re: [TowerTalk] Coaxial Stubs target frequencies for CQWW SSB

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Coaxial Stubs target frequencies for CQWW SSB
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Thu, 1 Oct 2020 21:01:24 -0700
List-post: <mailto:towertalk@contesting.com>
On 10/1/2020 11:11 AM, David Needham wrote:
What I am hoping for is advice on a strategy for where to target the nulls
for each of the 10 stubs. 1850 for the 160m open stub could be good?

Remembering that VF varies with frequency, it's best to tune the stub by measuring at the harmonic frequency(ies) it is intended to suppress. And while the tutorial you posted is a start, the ones discussing PLACEMENT of stubs along the line are more important when you get around to adding them to your station! The website is k9yc.com

73, Jim K9YC



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