On our 2013 Bighorn, we have no cable or antenna reception in the bedroom. The living room works fine. We do have the Winegard Satellite dish installed on the roof, which was done by the dealer, and receive satellite on both TV's. We made sure the power booster was on and the TV tuned to cable/ant. in the bedroom, but no reception. There is only one coax cable coming out of the ceiling which attaches to the cable box. Is it possible for that one cable to carry sat., cable and ant. signals? Any ideas?