I installed the Winegard swm3 dish on the roof on the last two RV's I had. It only connects to Direct, but is HD, though is not an in-motion system. Its fully automatic, when you park, push a button, it finds the 3 satellites necessary for HD. For connections, there is the coax cable from the dish to the Direct Box, then an HDMI cable to each set you want connected. This connections, means all TV's will be on the same channel, but one way around that, is you can always use one or more TV's on the antennae, for local channels. IMO this worked very well, we never had a problem with any of it.
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