Hello! I have a Terk HDTVa amplified antenna. When I hook it up to my television, it works fine. I get all the major networks and some extra. I have an HDTV with a Hauppauge 2250 Dual Channel tuner in it. I hooked up the same antenna to that in the same position and I got two channels: PBS and NBC. I borrowed a AverHDTV Duet tuner from a friend of mine and put that in my computer. Same result: only two channels. So it looks like the signal is weaker going into my dual channel tuners than it is going into my television? Anybody have any suggestions? BTW, this machine is running Windows 7 64bit.