Typically, the rooftop antenna is connected to a power supply on the back of a wall plate with a push button power switch on it. The wall plate will have one jack for the antenna output on the outside. It may also have another ouput on the back of the wall plate to go to other TVs. You push the button and a little light comes on and power is supplied to the antenna amplifier and antenna output is supplied to the output jacks on the wall plate unit.
The on the back of the wall plate unit is also a second input for cable TV which is normally connected to a jack on the outside of the RV. When the pushbutton is in the off position, and the light is off, the cable tv inlet is connected to the outputs on the wall plate unit.
Satellite connections cannot have any splitters or other electronics in the line between the satellite dish and receiver. So many times on the same wall plate with the antenna connection will be a second just plain straight through "barrel" jack. On the backside will be a single cable connected to it which runs to a second jack on the outside of the RV - just one piece of cable, nothing installed in the line. This connection is often labelled "AUX" or "SAT".
Then you will have cables running to other TVs such as bedroom, bunkroom, or outside. These are either connected to a splitter on the back of the wall plate unit which splits either the antenna output or the cable TV input to the various TVs. This will not work with satellite. Many people have to find the splitter behind the antenna wall plate and disconnect the cable(s) to the other TVs and connect them to the satellite receiver TV out.
It sounds like in your situation, these cables to the other locations terminate at the connections you are describing. So you would either need to connect them to a splitter and the output of the antenna/cable TV "box", or connect them to a satellite receiver TV out.
You can use one of these to find the ends of each cable:
You can also use a 9 volt battery and voltmeter.
NOTE, most of the time a splitter or other device in a cable run will interfere with end-to-end cable detection, so if you have a wall plate(s) you may want to look behind the wall plate.