I have a 722 and a 622 and have encountered some OTA issues with the 622. I live near Sacramento and am getting good signal strength in regards to an OTA signal. I am able to view all the local OTA stations with my 722, but I am unable to view the PBS and ABC feed on the 622. I have deleted and rescanned multiple times and I cannot view those particular stations. All other stations on the 622 have the same signal strength as the 722 and I am really puzzled as to why this is occurring. Does the 622 process the signal different than the 722? Any advice or resolution?