[T.G]

Scott, my apologies, looks like I sent you on a chase for something that really only exists at the station level. I just talked to a friend from back in the production days and it seems that in my head I had combined the satellite OTA diplexers with the programmable RF headend signal combiners which can be used to shoot video/audio feeds down open frequencies on a line. He said the equipment for reassigning as many channel frequencies as you are looking at trying isn't financially practical for someone to do at home.