[TenTec] Tuner for Centurion balanced antenna

["Rob Atkinson, K5UJ" <k5uj@hotmail.com>]

Rick is right in that there are a number of matching networks out that the 
manufacturers call balanced transmatches.  i won't get into an engineering 
argument over the definition of a balanced transmatch, as I am not qualified 
to argue about that.  I guess I should have said that the design I prefer as 
I believe it is most efficient, is the balanced network design using two 
parallel L networks (which share a common capacitor).   I guess i could call 
myself a L network devotee--they are all i ever use; i have a 238 for 
unbalanced feed and it is great.  I think we all know how low loss they are, 
and easy to tune; only one match configuration and it's always therefore the 
best by default, and only two controls to adjust and so on.  I have never 
owned the palstar but i understand it is a parallel L network (the one with 
the  BAL model number as Rick identified) with the inductors on a common 
shaft now (instead of side by side with a belt between them on a pully that 
can break).   If you don't need to motorize the components, these tuners 
aren't that hard to build.   see this for more information:
http://www.somis.org/bbat.html

<<<then coax (good stuff like belden 238) the rest of the way to the rig.>>>

woops, I meant RG213; sorry.

rob/k5uj

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