I have 6- 322 receivers. Dish 500 with DPplus LNB. Also, a 44 switch trunked with a 33 switch. The problem is 4 of the receivers loose signal occasionally. When they loose signal, they also loose all of the remote addresses for TV2. For example, tv 1 and tv 2 will all have #1 address which causes all tv2 remote to operate all tv's on tv 2. Dish network said it was probably the receivers but it seems pretty rare that 4 receivers would go bad all at the same time. It doesn't happen very often but it is annoying. I have learned to change remote addresses myself so I don't have to keep calling Dish. Could it be a switch. The 4 receivers are all in a closet and 2 are in the rooms with the tv. Also, I have IR to UHF Pro remote extenders for the TV 1 side of the receivers.