I was going to buy a dish 500 and a dishpro dual to aim at sat 72 at my camp to combine with the dish I have aimed at 61. The retailer wasn't sure if this LNB would work. I believe it will, but he thinks 72 is like 118 which is KU I think. He just wants to sell me the right dish. My camp is in Maine where 77 does not come in well if at all so I do not want to buy an Eastern Arch dish if I can just use another 500 for $50 combined with my DP34 switch. Educate me and thanks.