Recently i installed a home theatre system for a guy. I ran a wire for satellite before the walls went up. I also did some wire management on his TV in his living room. A few audio and video cables were not even being used. So i took them out and re did everything and made it a little more simple. What really confused me was the way the satellite guy ran his wires for the living room. He had 3 wires coming out of the wall and they went to various splitters and then finally two came out and went into his receiver. I scrapped two of them and used one jack on the wall. Everything worked fine and i went down stairs to finish wiring up the home theatre system. The receiver down there took forever to find the satellite and power up. I couldn't figure out why and the guy told me that he thought two wires had to be ran for the DVR receivers. I was unaware of this so it caught me off guard. He has a big switch block in his basement with about 15 wires coming in and out of it. He only has two receivers and i thought he just had them all put in so he would have TV in any room if he ever needed. Now two weeks later he calls me and says that the TV in the basement isn't working, he can't get a satellite signal. But the TV upstairs is working OK. I've been looking around and it looks like you use the receivers like a hub of some sort. He has two jacks on both receivers. I was able to get TV on one of them in the basement so i left it at that. Now I'm not so sure what i've done.