I went to a KVH presentation at the Newmar International this summer and was told that the only Dish receiver that will work properly with the KVH is the 311. That is what I have and it works fine. I did add the Dish 500 DVR and it works on 119 but will not search for 110 satelite. Most of what we watch is only 119, so it is fine for us.
The ultimate solution is switching to Direct. We are sticking to Dish as that is what we have at home and have a contract.
Joe in Seattle; winter: Motorcoach CC, Indio, CA
2015 Essex 4503
2010 Honda CRV toad