so if i take the 508 cable output to tv and put a splitter on it , then run it in to the tv wall cable i will get the 508 on either 3 or 4 and the 722 on either 77 for tv1 and 79 for tv 2 from any where in the house. is that correct?
Yep. I have a 508 and two ViP722 DVRs. Not sure it's worth it, though, I suspect in the coming year (whoops, it's here already) the 508 will be phased out. They're trying to move to a smaller (ViP-only?) code base with 8PSK only receivers. And eventually, only receivers capable of MPEG-4.
i treid that but the basic cable over powers the 508 any way to stop that. i get free basic cable with my cable internet and i sue some of the locals that dish dont get. how do i override channel 3 to get the dish on it