HD TV at least with DIRECT, requires being able to receive 2 Satellites from what I know. ***They tried to give us HD TV but couldn't find both Satellites from what I was told. Not saying that it WILL be a problem just that it COULD be.
We went back to standard reception for our Coach and for our Cabin, not sure that I would want the extra hassle while on the road. After saying this if it were my Home it may be different.
On our
1958 18' Traveler we will not be taking any kind of TV unless traveling for more than a few days....and then would seriously consider taking the Newell!