I am moving my Mom to an assisted living facility. The manager says they have basic Dish Network service to all the apartments. She has a 42" Vizio HDTV. Guess I will need to get her her a 211 receiver to hook on to the network to receive the HD signal? I see lots of folks with HD sets but all of them look like like a stretched SD picture and there are no receivers in any of the rooms that I can see. Do these large networks simply send a basic channel package to the rooms via coax?