Connecting Winegard Traveler to Dish Hopper

If you are talking about getting the TV signal from the Hopper to more than 1 TV there is no coax option available as the output is HDMI. You could add an wireless HDMI splitter/repeater and connect that to the 2nd TV but they are not cheap. If you have the ability to run a new HDMI cable from the Hopper to the 2nd TV then you only need the splitter to get the signal there. You may find some HDMI to coax (usually poor quality picture) or CAT6 Ethernet if you don't have room to run a new HDMI cable. Keep in mind you could run the coax up through the ceiling to the roof, across the roof and back into the RV at the new location, it just takes a longer cable.
If you do have the Winegard Trav'ler SK-1000 for DISH, you can also just run a 2nd coax to the 2nd TV from the antenna and use a Joey at that location.