I work at a bar where we have 6 directv receivers stacked on top of each other, all feeding into a video distribution system. They are all the little silver boxes, I beleive model D11. Right now if I use the remote to change the channel on one of the boxes, all of them change. With dish network you have 16 different remote frequencys to choose from to eliminate this problem. Is there a similar solution with DirecTV?