By default, the outside connection meant for use to connect to the campground cable signal CANNOT be used without modification. If that same cable does not go to a video control center or a wall mounted plate that you use to switch between OTA and cable then it's likely it can't be used at all.
If it does go to one of those devices then the cable coax would need to be removed and either run directly to the satellite receiver or to an A/B switch to allow you to select whether you want the incoming signal to go to satellite or cable.