I have three receivers. On is a TiVo unit and two are RCA units. In the past couple of months my TiVo unit and one of the RCA units will lose the signal for higher number channels such as 289, 299, 301, etc. The screen says searching for satellite. But if I turn on these channels on the second RCA unit, then I can receive the channels on the other units. Each unit has its own connection. The only thing I can think of is that something is going on with the phone connection. All three units are connected to the phone line. I have disconnected the phone line from both RCA units to see if this solves the problem. It is random and does not happen all of the time. Does anyone have any thoughts?