I suspect the RV was setup with a DVR in the living room and you connected Sat 1 and Sat 2 to the 2 inputs on the DVR. It might also have been a Dish Network setup with a dual tuner receiver. If so, they connected to the main TV directly from the receiver and send the 2nd output to the bedroom TV via the coax you found in the bedroom. If so, you cannot use this for satellite now, but you should be able to trace that cable back to the living room and connect the Sat 2 cable to it to get the satellite signal into the bedroom. You could then run 2 single tuner receivers (bedroom and living room).