First of all, check the cabinet above the sink and see if the booster is on or off? (Should be off for cable channels and on for over the air channels.)
2nd have you been to Thor's Owner resources page and downloaded all the info for your coach? Go here, have your VIN handy and log in:
https://www.thormotorcoach.com/owner-resource/
3rd have you been to the tech topics forum and downloaded Ed's excellent crowd sourced Axis/Vegas owner's manual?
https://www.thorforums.com/forums/f1...nual-4961.html