I am considering getting a 625 DVR to feed 2 TV's and a question popped into my head tonight. I want to put the receiver in the family room and hook it to the TV there and in the bed room. The bedroom is on the second floor and probably 25-50 away by cable. Does that mean that it would need to be a coax cable? I really wanted to use the RCA or S video on both TV's. Can they be ran that far?