In my camper, a Keystone Outback, the over-the-air (antenna) and analog cable TV share the same coax. This coax is run to all the TV locations (master, main and bunk house). There is a push-button switch in the master that switched between the two (OTA or cable).
In addition, there is one dedicated coax run from the SAT IN (outside of camper) to the main TV. This is for sat only. Because of this, there are two coax receptacles near the main tv: OTA/cable and the sat. It is this sat coax that I connect my sat receiver.
"Generally speaking", sat cannot be split. (Actually is can, but if you know how you wouldn't be asking this question.)
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