I don't think that's correct. You can't use a 4900 to tune in an 8PSK transponder, even to peak the dish. I had one of those which I gave to my mother for her Sky Angel sub, knowing (haha) that I could use it to peak her dish once I mounted it. I couldn't find the sat to save my life! I had to hire professional help who had it peaked in about 5 minutes. It was only then that I discovered that most of the transponders on 61.5 were already 8PSK, and I had not tried tuning in one of the QPSK transponders using that 4900.