yes, i have a superdish 105... hooked up a new dpp44 (plan on eventually adding 61.5). 119 to 1st sat input, 110 to second, 105 to third. all running to 501 pvrs. power inserter hooked in between switch and 1st receiver. none of the receivers see the switch. 1st receiver does a check switch, i have superdish checked, and it does 50 tests, installed switch: unknown. I put my dp34 back up, i get everything back again. i hope someone can help...i'm getting frustrated!