We don't have the built-in one that the new RV's have but usually bring along a second 25-foot Rg cable with a two port transformer and a short RG cable.
We hook this up to the pedestal CABLE conenction and run one Rg cable to our CABLE TV INPUT connection and then just throw the second RG cable under the trailer.
Then we can bring out our smaller 22-inch VIZIO and setup on a table next to the trailer under the awning to watch it.
We like to sit out under the awning and watch TV alot.
Being portable like it is we can unhook real quick and sit inside the trailer when we leave to go somewhere...
Outside TVs always draw a crowd sometimes...
Roy ken