If the second TV is an HDTV, it will get an independent HD signal. You will have three sat tuners instead of the two the 722k has. One of the tuners optionally can be used to record ABC, CBS, NBC, and Fox during primetime leaving two tuners for other recordings or use for viewing live. I don't know if you're using the optional OTA tuners on the 722k, but the HJ system at the moment has no OTA capabilities. That is a future feature. There are some other apps the Hopper will have that are not available on the 722k.
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