[amsat-bb] TrakBox Interface to HAM-IV Azimuth Rotor
jkopala at gmail.com
Sat Dec 2 15:11:29 PST 2006
I am looking for a method to interface the TrakBox Azimuth Sense input to the Azimuth indicator level from a CDE/Hy-Gain HAM-IV / CD-45-II Rotator.
It would seem that without a circuit to isolate the grounded return to the control box meter the likelyhood of a ground loop occuring is high. The TrakBox expects an Azimuth indicator voltage to vary between 0 (its local DC ground level) and the positive reference voltage for the rotors.
I assume there are some TrakBox users using rotators other than the Yaesu and Ken-Pro rotors who have encountered this problem and come up with a solution. There is no point in reinventing the wheel if there is already a suitable solution available that I can use.
I did receive a suggestion to use an op-amp to convert the level.
Any suggestions from TrakBox users?
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