I have an install to do for a customer who will have no line of site from anywhere on his town home as the hoa will not allow it from anywhere he can get the dish installed. However his next door neighbor has a dtv 18" installed and has great los. They are on good speaking terms and the potential customer has a note from his neighbor authorizing the mount of a dish on his premises. What i want to know for the sake of the appearance of the install is how to install them both with the same dish and be independent of sharing a swim power insert-er. The potential cx will be getting mrv and the existing cx has an r15. keep in mind i want them both to be independent and not share a power insert-er. How is this done and i'm not interested in whether or not dtv allows this type of thing. I want it to function.