I am getting close to having my antenna tracking operational :)   One problem I have encountered is adjusting the output voltage on the G-5400B rotor control to correspond to 180 degrees. I can get it up to 158.  One other question, on doing the elevation A-D calibration. It asks to flip the antennas to the right horizon 180 degrees. Can I do this with the antennas pointed straight up at 90. Not sure if I can flip the antennas without causing some problems. Thanks Mike