With Directv your options are more limited than Dish since Directv intends to stop broadcasting SD channels soon making portable automated domes obsolete since currently none are capable of delivering HD channels from Directv. If you intend to stay with Directv you will need to get a Winegard Travler or the type of satellite antenna you have at home and manually point it after arriving to your destination.
Dish network HD channels can be readily received on most automated domes if you don't want to set up your satellite system, we have been back and forth between the 2 services over the last couple of decades to get promotional pricing. We found they differ very little as they have pretty much the same channels and pricing is similar as well after promotions expire. We are currently using Dish at home and in the RV.
With either service we have always set up our own satellite antenna, initially on a home made stand and currently with a tripod we purchased a few years back. We want full functionality like at home as we have 2 receivers in our rig and my DW and I rarely watch the same channels. We have been setting up our satellite system for so long it takes but a few minutes to have all our subscribed programming using just a $5 compass.
