DISH called to upgrade me and proposed a 622 for my (owned) 921. I asked for a 722 and was told that was not the offer. When the installer showed up, he put in a 722 and called in to authorize it and was given some sort of guff on the other end. He told them he didn't have a 622 with him and he was from about 70 miles away. DISH evidently gave him the OK and I now have a 722 (to go with my 622 and 508). The DVR programs on the 921 still play, even without any antenna input. I don't have any off air HD available in Flagstaff, AZ, but I may take it to my daughter's in the Phoenix area and try using it to get off air there. Does anyone know if this will work, even though it's no longer activated with DISH?