Are you talking the sd or hd version?
I am assuming you are talking about the locals DISH provides and not by antenna. As I have mentioned before, the spotbeam for Buffalo HD locals is horrible (tr.4 spot.13 on 61.5) as it is on the northern fringe that is centered over DC. All of my HD channels are spotty right now (2,4,7,23,29) after being great all through the winter. All other channels on 61.5 are fine. That being said, I have had no problems with the sd versions on 110.
Steve