This might be a stupid question, but it's been bugging me ever since we got Dish installed a few months back... In our previous house, we had Time Warner Cable. Love it or hate it, I got all my service (including HDTV) from a single cable to each room. That was a DVR with two HDTV tuners. Now, wish Dish and DirecTV, you need a separate cable to feed each tuner. I know you can 'stack' signals to some extent, but it seems to be a tricky art. Fundamentally, what is the difference that allows cable companies to send hundreds of channels through a single cable, whereas the satellite companies will only send one channel per cable ? I'm sure it is something simple, but like I said - its been bugging me ever since I tore up my brand new house to run 2 or 3 cables to each room for a DVR & OTA antenna setup, just to match what a cable company could have done with one cable... Thanks !