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RE: rotator



Hi Nick,

The Alliance rotors (TV-type) come in two flavors - ones with a index switch 
and ones with a variable resistor, for position feedback.  Most 
computer-driven controllers require a potentiometer for position feedback, 
but they can probably be adapted for the variable resistor.  If your rotor 
uses the index switch, you need to find or construct something different.

My Az/El setup consists of a pair of index switch-type rotors.  I don't know 
the brand for the Az rotor, but I am using an Alliance on its side for 
elevation.  The controller is homebrew, based on a Basic Stamp.  A 
discussion of the design and source code are at:  
http://home.jps.net/~gregd/hamsite.htm.

Good luck,

Greg  KO6TH


----Original Message Follows----
From: "nick pugh" <quadpugh@bellsouth.net>
To: <amsat-bb@amsat.org>
Subject: [amsat-bb] rotator
Date: Wed, 8 Dec 2004 05:08:40 -0600

I am looking for a cheap rotator interface hardware to control an Alliance
rotator. Does the list have any suggestions?

thanks
nick
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