by Bill Adams » Wed May 09, 2012 6:46 pm
Just as a bit of clarification, there is no dome made by any manufacturer that can receive the DirecTV HD programming. DirecTV broadcasts their HD programming from 2 KA band satellites and their SD programming from a KU band satellite. Dish broadcasts all of their programming from 3 KU band satellites. All domes contain only one KU band LNB so the DirecTV KA band signals cannot be had. The only way to receive the DirecTV HD programming is with the use of an open face multiple LNB antenna such as the Trav'ler SK-3005
With Dish, since they use 3 satellites for their programming, the dome must be able to re-point itself (called toggling) to the different satellites when you change channels. The older domes were only able to toggle between 110 and 119 and the newer ones can toggle to 110, 119 and 129. 129 is where the HD programming is located.
If you remove the domed cover from your antenna, you will see a silver box with the electronics inside. If it is new enough it should say SW64 Ready if it can move between the 3 satellites. If the antenna has 4 feet but does not say SW64 then it "can" be upgraded and if the dome has only 3 feet it cannot be upgraded.
If you do have a unit that is capable of toggling to the HD satellite, you will still be restricted to only one, single tuner, receiver for use in the coach. If your current antenna is not capable of toggling between the 3 Dish satellites it would be my recommendation that you simply replace the unit you have with either a newer dome or one of the antennas designed to be able to see all satellites at the same time. The Winegard Trav'ler series will handle this task.
Let us know if you need any additional clarification.
Bill
Traveling the Western US by RV
Winegard SK-3005