2020 Disc 38w - plugged into park cable and went to tv's to scan for channels and nothing, i know they had several stations that other coaches were getting access too.  Can't find any switch or anything to turn off or on top make sure it is on coax cable only - Any help?

There is a coax connection in your coach from the cable in your outside bay. Mine is behind my tv in the bedroom.  On the plate around the coax you’ll see a green light and a small  1mm button.  If the light is on, your tv is set to Antenna. When you push the button and the light goes out, then your tv’s can scan for cable stations.   

just remember to turn it back on before you get frustrated not finding antenna channels on your next camping trip.