2008-06-22, 04:07 PM
Quote:The signal is strongest on low frequency channels and gradually gets worse on higher frequency.
That seems to confirm a cabling and/or connector issue. Higher frequencies are a lot more sensitive to the cable quality than low frequencies.
Quote:29.7 SNR on WinTV.
That would be a good SNR for over-the-air, but if I remember correctly QAM cable needs to be in the 30's to get a reliable lock.
Quote:The signal strength direct from the wall to TV
Unless the incoming cable runs directly to the wall outlet, you'll still be going through the cable wiring in the house. If the cable company terminates their line on the exterior of your house, try running a direct RG6 cable from that point to the HVR-1600 tuner (even out through a window would work for testing). If your signal quality is better, you'll know you need to update the house wiring. If the signal quality is the same, there's no more you can do on your end and will need to contact the cable company.
Quote:putting in the amp at the house entrance between the wall and TV drops it to 1at the TV!
Forget the amp for now. It's obviously hurting your signal more than it's helping. I had the same problems with an amplifier, and found improving the cable connections had a greater effect on signal quality than adding an amp.
Quote:29.7 SNR on WinTV. Putting a splitter in drops it to 4 on the TV and 28 SNR.
That sounds about right for splitter losses.
Take care,
Anthony