ATI TV Tuner 650 detects zero OTA ATSC channels after scan

[teng]

Does anyone with an ATI 650 PCIe tv tuner have any experience with the tuner not receiving any OTA HD channels after a scan? I have confirmed signal reception on the line with a TV as I have a 110" roof mounted amplified antenna with 30 mile direct line of sight to NYC. I can collect all NY Broadcast stations from every TV in my house so I don't believe signal strength/quality is an issue. Additionally, I have confirmed that I am using the ATSC jack and not the NTSC jack (NTSC works fine). I have downloaded the electronic Program Guide as well since i've heard that not having it caused other tuners such as Hauppague from receiving. Is there something that I am doing wrong? I have already returned one card already so I'm on my first replacement card. The behavior was identical with both, so I imagine there is a setup issue? I am running WinXP SP3. I have also heard other tuner brands have issues with systems running 4GB RAM or more. I have 4GB but since i'm running 32bit O/S, I imagine its not even addressible so a non-issue... Does anyone have experience with this? It would be much appreciated. Thanks!

 

[leon2006]

What is the gain setting of your amplified antenna with variable gain. I have an indoor amplified antenna with gain up to 50db. I normally get HD channel at 50% settings on the gain. The indoor amplified antenna can be purchased in walmart, target, bestbuy or stores like Fry's.

I use ATI 650 PCIE before and it works. I get the HD over air tansmission. The NTSC reception also works.

Now I'm using Hauppage 2250 TV tuner.

My OS is Vista 64 Ultimate.