I have a 510 and 811 with Dish500 in service with AT120. I also have my old 2000 (4000?) receiver and single sat dish and LNB. Anyone know if I can use the old receiver for free-to-air channels? Can I get any channels except the showroom channel on 119 or 110? I read somewhere that you could get NASA and the audio channels on a free-to-air receiver. Any other suggestions on how to put the old equipment to use?