Dish network with Trac vision roof mouted dish.

First, that suggestion from KHV will not work...ever. It will be a different check switch type and of no value to a dome user.
Second, Dish changed their broadcast signal rendering many dome style antennas useless without new software. You need to talk to KVH to see if your antenna can be re-programmed or whether the Dish changes has rendered your dome a brick.