[TowerTalk] Common-mode current on feedline

[Howard Klein]

----Original Message Follows----
From: Chuck Counselman <ccc at space.mit.edu>
To: k2hk at arrl.net, towertalk at contesting.com
Subject: Re: [TowerTalk] Common-mode current on feedline
Date: Wed, 25 Jun 2003 22:42:56 -0400

>How do you have your tuner 70 ft away from your shack? Is it remotely 
>tuned?


Then I was able to find one _fixed_ setting of the tuner for which the SWR 
on the coax (and therefore the loss) was tolerably low across _all_ HF bands 
80 through 10 meters, except 30 meters where I don't transmit much power 
anyway.  Since then I've left the tuner fixed. Now QSYing is much faster.  I 
intend some day to write up and publish my method for finding such a magic 
setting.  I've found them for various line lengths, different tuners, 
different baluns, etc.; but have not yet found a general (never-fail) 
solution.  However, I believe that there's hope.

73 de Chuck, W1HIS

This is becoming even more interesting !! I am looking forward to seeing 
your method. I wonder if it would apply to a shunt fed tower. Substituting a 
fixed value for a variable capacitor for example. I hope we hear some more 
of this.
73, de Howard..K2HK

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