I currently have 3 h20-600 units installed in my house, 2 of the units work great, no problems at all. The 3rd one however cannot change channels without getting the searching for satellite signal 771 message, the only way to get the picture and audio back at that point is to reset the receiver (either menu or red button). After the reset the picture & audio are great but again if I change the channel the 771 message appears and I'm done until another reset. My question is, this is the only receiver in the house that has a RG-59 cable running to it from the multiswitch, is this the reason why I'm having problems with it? (the run is about 50' from the multiswitch) I didn't have enough RG-6 left to do the run to this location, but I didn't want to go out and buy more if there wasn't any chance that it would fix the problem. I am going to try to swap the receiver into one of the other locations in my house tonight to see if it's the receiver causing the issue. Any other suggestions?