On my RV that I use for summer camping I have a triple LNB dish. Will I be able to get the new national HD channels(like National GeographicHD, Speed ChannelHD, A&E HD etc) when I hook up my H20 reciever. I hope I dont have to have one of those huge "slimline" dishes, they are pretty big and I imagine heavy as well. It would probably take me 3 days to aim it. I don't want to have to rough it completely this summer