A friend has a 2011 Keystone Cougar that he is living in full time. The RV is wired for two TV's. The living room has the booster/12vdc plug and next to that is another wall plate with two coax plug...
On mine it is where the outside coax connection comes in thru that dual coax wall plate and then to the rest of the trailer with the jumper in place. I can remove that jumper and connect my satellite receiver to the incoming side of the wall plate to use Dish. I only have a single outside connector so that serves as OTA, cable, or satellite depending on how it is configured.