It's possible it doesn't have one. It's optional on many entry level rigs and rentals sometimes don't even have tvs a spart of their equipment. You can get flat tv coax that you can run in through a window without leaving a big gap for bugs. Lowes or Home Depot probably has it. Or try Radio Shack, Circuit City, etc. Camping World sells it too - see http://reserveamerica.campingworld.com/browse/skus/index.cfm?skunum=14649&src=SRQB