Having problems with dropped audio/video annoyances. Was talking to CS who had me test my signal strengths, and on my H20 on Sat 101 I was in the 70's, but on my HR20 on Sat 101 I was in the high 90's. Tech support gave me some BS response for this saying this is normal for each receiver to acquire it's own signal and blah, blah, blah. All things being the same for both receivers (cables, connections, etc.), could two different recievers really be that far off? thanks.