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Re: [TenTec] 229B tuner: Slight upward creep of SWR

To: tentec@contesting.com
Subject: Re: [TenTec] 229B tuner: Slight upward creep of SWR
From: Peter Klein <boulanger.croissant@gmail.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 22 Jul 2018 23:09:22 -0700
List-post: <mailto:tentec@contesting.com>
Thanks for all the good info. One thing though. The SWR creep may be a “clear 
indication“ that I am using the wrong balun, but that ain’t the case. I am 
using a 1:1 Guanella balun, 17 turns RG-58 on whatever torroid Rick, DJ0IP 
recommended. The antenna I noticed the “creep“ with is a 40 foot vertical 
dipole, which has quite low impedance on 40m and 80m even without the “help” of 
a 4:1 balun.

My purpose in asking my question was to ascertain whether it is safe to run my 
set up at 100 W despite the creep. I can easily tweak a dial to retune when 
running digital. And a creep never rises past 1.4:1, and usually less. I don’t 
care about perfection, I just want to make sure I’m not risking blowing any 
disc capacitors. My educated guess is that everything is fine, I simply wanted 
a reality check here.

Rest assured, if I was going to run higher power, I would be making the 
suggested modifications. But that’s not really in the cards right now.

--Peter, KD7MW
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