My house came with a directv dish from previous owner. I am in Lockport NY(78.68W) and the dish points SSW. I assume it is pointing at a directv satellite but dont know which one. My Ariza needs to know which satellite. Is the Ariza to old to pick up anything? Will I need to reposition the dish? I am not getting anything from Ariza scans although it shows 25-35% signal depending on which satellite I select. Any suggestions? Thanks.