I replaced the SAT-520 DirecTIVO receiver with an HR 10 over a year ago. It's sitting in the original box and I don't know what to do with it. There seems not to be much interest in this item on E-Bay. I want to get another HD set for another room but am not sure I'll stay with D*. Can the Zenith be worked into a cable setup or is it strictly for satellite reception? (Probably a dumb question; I'm out of my element). Thanks.