I just purchased a 722K last week. I am using it with a 1000.2 dish. If i take the single cable coming out of the dish and directly connect it to the receiver on tuner 1 and run check switch I get the needed satellites on the one tuner and can use it with just one tuner, but these things are worthless this way (but some tv is better than no tv).If I hook up the triplexer for both tuners as instructed in the manual that came in the box to tuner one and two, the receiver sees no signal at all like the 1000.2 does not exist. Also when running the check switch with the triplexer it goes to doing 55 tests, where it is only 4 without and going direct from dish to receiverIs there something simple i am missing? been messing with this a week now.