Our Winnebago has 2 outside jacks, one marked satellite, the other cable. In a compartment above the driver was the other end of the satellite line as well as a HDMI connection that is wired to the TV. There was also a satellite connection cable buried under the roof skin and measurements were furnished in the manual as to where to bore a hole to get at it for a roof mounted antenna. When I put the dish on the roof, I had to pull the jack in the compartment to switch the cable to connect the roof line to the jack (rather than the run to the outside connection) Our last RV had a manual roof mounted dish and when we got our new coach I opted to use our new Tailgater as a portable to 'dodge trees' for a while. After a few months, I just mounted it on the roof as I found I was climbing up there to set the dish on the roof anyway to dodge bushes. I found it was a wash as to whether having it portable was a plus or minus. Tailgater antennas have 2 output jacks that require 2 cables if you want to use two boxes. The problem I've seen with coach TV wiring is that the cable circuit really will not work with satellite as for satellite, you must have a straight run between the dish and the box. Any type of splitter keeps the system from working and the splitters are usually inacessibly buried in the wall somewhere. Being able to make a direct cable run for satellite bedroom TV is a real problem on most coaches. The cable connection should let you run all your TVs off cable (after setting the TV menu to cable). That said, for cable, you generally have to be sure the over-the-air antenna amplifier is turned off (usually a wall plate with a small pin button and light) and for over-the-air reception, the amplifier on and the TV menu set to antenna. We are not that technically inclined and found that we never used the additional features on our home DISH box (DVR, etc.) so ended up returning it and just moving the 211z back and forth in our home and RV. Saved $7 a month and the remote operation is now consistent in the house and RV. I can only speak from experience of buying my system outright (Tailgater and 211Z).
