DirecTV sent me one of these things for my HR 54. I plugged it in and hooked the coax to my splitter that I know for a fact works. However it says there is no signal on the DirecTV receiver. I tried a totally different coaxial cable just to be sure and it still doesn't work. Of course I'm not using the little antenna that they send along with the local channel connector because I'm too far away. Any ideas what might be wrong?