My father is moving into a retirement home that has Direct TV installed in the apartments. The home pays for the service. They are not individual subscribers. I want to install a DVR for him in his apartment. I was told by the home's director that I can just go to Best Buy and purchase the DVR receiver and hook it up. I am not quite sure how that works. Don't you need 2 inputs to be able to watch one while recording another? Is there a way to split this signal? Not sure exactly what I'll need or if it can even be done. Thanks.