I've had progressively worse signal strength - probably need a repeak. But the borderline reception has brought up another question. I can get some channels just fine, while others have reception problems (pixelation, freeze, etc - basically low signal). Intuitively, I would have thought HD channels would be worse, since it should require more data for a solid picture, but this doesn't seem to be the case. Tonight, I was checking for the Free Showime channels, and about the only one I get is the HD channel - others are just black - not even a no signal message. Checking signal strength, it is definitely lower on some channels than others (69 on blank channels - 77 on received channel). I would have though that with a digital signal, signal strength should be the same on all channels. What's going on here?