Well I have the AT120 pack, the Dish HD channels, and two international channels that come off 121.
I do not subscribe to locals.
On my 811 screen, it says that I'm connected to 119, 110, 121
I don't think they setup the superdish properly when they installed it. I told the installers to setup the superdish only, but they were too lazy and didn't remove the D500 and I belive both are being used.
And yes, it's on the roof.