We recently purchased a 2012 Greystone 33ck. We have tvs in the living room, master bedroom and rear bunkroom. I am planning on buy a portable self aiming dish. I have one incoming "satellite" hookup outside that I know of. If I connect the coax to the one connection in the back and I have 2 receivers, can I watch different programs? Or do I need 2 run the second coax directly to the 2nd receiver?