I currently have an 811 and I have a couple of digital channels available to me that I cannot get, not because of signal strength issues, but apparently the PSIP information in the datastream is not recognizable to the 811's OTA tuner and the receiver will lock up if you try to tune in to those channels. I think it will recognize it if I scan for OTA channels, but I can't do the scan because I get my OTA channels from two different directions (Northeast and West). I live smack dab in the middle of two markets and pick up both very well. When you scan one side and add the channels in and then try to scan the other side, the 811 deletes the previously scanned channels. Does anyone know if the 622 keeps your already scanned channels in memory if you complete another scan?