I am trying to hook up a DirecTV satellite system in my 5th wheel. I have a Wineguard travler model SK-3005 directv slim line antenna. I connected the coax inside to a PI-21 power inserter and then into my HR34-700 reciever. The reciever does not have an access card yet. I get an error 775, problem communicating with dish. Do I need any other equipment to make this system work?