I am trying to distribute the video from a DVD changer and satellite TV to 4 different rooms/tvs. Here is the problem. The DVD is simple enough, but each room requires its own satellite receiver. So I need to control the DVD and the individual satellite receiver from each location. I was hoping to send the IR signal over coax. The modulated DVD source (including IR) needs to come before the video distribution panel, whereas each satellite receiver (and associated IR) would need to come after. How can I succesfully combine these IR signals into a functional system??