I'm having a problem with an HR20 that has an external drive & thought it was the DECA unit so I swapped the one on the HR20 with the one on the HR22. I still had a problem with recordings on the HR20's external drive & went to watch a recorded show on the actual TV. Not only is the recording bad, but live tv is also bad -- the picture & sound just stop for a few seconds every few minutes. I was checking the signal strength & I have some 0's on 101 & a couple of low numbers. However, I don't know what is normal. I'd like to post the matrix of the signal strength numbers so one of you gurus can help me determine the issue. I'd like to do that for a couple of the DVR's. Is it ok to do it here & if so, do I need to post the signal strength from every tuner & satellite. I'm not currently having any problem with the other DVR's.