Being an existing user of an H20 (which worked perfectly) I thought upgrading to the HR20 would be a simple upgrade. Unfortunately, after the installer hooked it up, I noticed channels 68 - 80 (i.e., the HD channels) have the crackling and losing connection sound that is apparent in a rain storm. That chirping sound like the signal is weak and dropped audio for about 2 seconds. I've reset the receiver several times, I tried both component and HDMI connections and all to no avail. DirecTV scheduled me an HD specialist for Tuesday, to either fix or replace the receiver. The installer though the receiver may be faulty. Is this what I can expect from the HR20? The signal strength on the transponders (except for 4 I believe which is normally weak) appear good, i.e., all in the 90's. Frustrated after waiting all day for this thing to get installed only for it to have an audio problem. FWIW, the audio issue only appears on the HD channels, not the local HD channels. Anyone?