the first thing to make sure is that you have a digital TV or a digital converter if not. assuming you have that, since it worked in another RV. there should be a Antenna booster located in the RV somewhere, usually in the bedroom.
Most airlines in the United States, including American, Delta and United, allow carry-on bags that are no more than 22 inches long, 14 inches wide and nine inches high. Southwest and JetBlue accept a more generous 24 inches by 16 inches by 10 inches, and JetBlue even adds a couple more inches for cabin bags flying on its Airbus A320 planes.
1 2 bags standard, up to 10 bags maximum (up to 4 bags on Delta Connection) 2  Maximum dimensions: 62 inches or 157 centimeters (length + width + height).  Maximum weight: 50 pounds or 23 kilograms (for Brazil: 70 pounds or 32 kilograms).