----- Original Message -----
From: "Colburn" <firstname.lastname@example.org>
Sent: Friday, November 28, 2003 6:07 PM
Subject: Re: [TowerTalk] Best tuner value? (I think that was the topic)
> Jim Lux wrote:
> > I don't know that I'd try to do something like modifying some ancient
> > hamfest special (high quality as it may have originally been) with
> > or servo motors. Too many potential problems, mostly mechanical in
> Actually, three sets of selsyn motors might do just fine, since they
> track perfectly one with another ... that is if you can find them!
But selsyns don't do multiple turn counting.. Maybe with some sort of
gearing they would, (i.e. 1 turn of selsyn = many turns of cap or inductor).
For a conventional 1/2 turn cap they'd work just fine, and be fast, although
I'm not sure how precise they'd be (or need to be)
> Only other things you'd need would be a remote antenna switch and a
> remote sensor for your SWR/PWR meter.
Remote switches are already available, of course.
The SWR could be measured at the Tx end of the feedline (hopefully, your
tuner lets you get fairly well matched, so the loss of the line is not
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list