I currently have a Directv DVR and three HD receivers at my home. The dish is a Slimline 5. I also have access to a boat in another county/zipcode which cannot be moved. I'd like to use one of my HD receivers at the boat when I'm there. There is a Slimline 5 dish already there for me to use. (No one else is using it). The dish was previously working fine and all the connections look good. The dish has a double cable and the receiver has a place for only one. I connected the receiver to the dish but it can't detect the signal no matter what I've tried. The signal strength meter showed 98% on one particular satellite but the receiver says it can't detect it. I did this once before with a non HD receiver and it was fairly straight forward. I would very much appreciate and suggestions.