I have worked this problem in the past by tapping the 110ac, stepping it down, isolating it and running it to the signal transformer. I don't remember the details, but If anyone is curious I will dig them up. Obviously this will provide 60hz instead of 80, but it still functioned normally, as far as I could tell anyway. And for a few bucks it was better than buying another Tracker. (I was a poor student at the time)