Sounds like the potentiometer inside the rotor housing has died, a common thing with these rotors. IIRC, it's a 500 Ohm wire-wound pot, with the winding connected between pins 3 and 7, and the wiper tied to the ground pin, #1. You can get a manual for it here:
http://www.hy-gain.com/man/pdf/HAM-IV.pdf HTH! Jim On 01/05/2011 08:26 PM, D. Craig Fox wrote: > Greetings and happy new year to my fellow sat-ops. I thought I would try > here before searching the entire ‘net, for some tips in trouble shooting a > rotor problem. My up/down link sat antennas are mounted on a common boom, > fixed el., above my HF yagi. I turn all of it with a very old Ham IV rotor > and the original CDE controller. Here is the problem. The rotor turns fine, > but there is no readout of direction. This first began to occur > intermittently, then finally the needle just stopped moving while turning the > antennas. I have checked the wiring at both ends and all seems in order. I > am really hoping to avoid having to tear down the rotor, so any suggestions > on trouble shooting from “outside the case” would be greatly appreciated. > Thanks much. > > Craig > N6RSX > > > > NOTICE: This communication may contain privileged or other confidential > information. If you are not the intended recipient of this communication, or > an employee or agent responsible for delivering this communication to the > intended recipient, please advise the sender by reply email and immediately > delete the message and any attachments without copying or disclosing the > contents. Thank you. > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
