Ken Fears recently authored an article on the subject. You will find it on The Companion.
The Lazy Daze Companion (http://lazydazearticles.blogspot.com/)
The entire collection of articles is a very valuable resource!
Don, thanks, but - it was a collaboration between Ed Liebgott and myself. He was putting satellite TV in his rig, and I was helping, long distance. It took some research by him with suggestions from me to figure out how best to achieve his needs, but eventually, he had it working. We decided to preserve what we had learned.
For those who want to read it, Don entered it under "TV".
Ken F in NM