Dsurette, that sounds like what I am trying to accomplish. It's looking like my options are to use an older 18" DirecTv dish that doesn't require power or to use an automatic dish like the King Tailgater or the Winegard Pathway.
Bill, I would love to be able to use the SWM setup, but my whole trailer is not on an inverter so I don't have a way to power it. My TV and receiver run off a small 150W inverter that is plugged in behind my TV, which also only has two outlets. Would be nice if I could find an inverter with three outlets, but then it would probably be oversized. It would have been nice if DTV made their power inserter plugs like Christmas lights so you could plug the receiver into the back of the inserter.
Also, we are going to be camping in the snow so I don't want to run lines through windows as it will let the cold in.