[amsat-bb] Re: [SPAM] RE: Re: Making your own rotator controller

[Edward Cole <kl7uw@xxxxxxxxxxxxx>]

After reading the preceding thread, I thought I would pose a question 
to the list:

Does anyone know of a rotator interface for controlling selsyn 
motors?  I have a dish that uses them for az and el drives.  They 
seem to take +/-10 volts to position the dish.  Dish position is 
determined from digital angle encoders (gray code).  Unfortunately 
when I obtained the dish, I did not get the pointing software.  It is 
complete with computer controller that talks via RS-232 with a 
computer running the tracking program.  The company that built the 
dish is long out of business so no luck on getting schematics or 
software.  These were custom built (only ten made).



73,
Ed - KL7UW
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