I'm a total noob at this so I'm not sure what I should even be searching for but here is my problem.

I got an avermedia duet, installed it, and it was recognized and worked fine. Before this I had my cable going directly into my tv and would tune to my local channels and the cable ones that would show up (FOX was on 5.1, HGTV, Food TV were somewhere in the 30s-50s, etc.). Once I had the card installed I went through the TV setup, it found the card, I entered my zip-code (22043) and it wen't through the searching process only to find about 5 channels. It didn't find any of my main local channels, it found the CBS sub-channel that displays the weather radar, a NBC home shopping network, C-SPAN 2 and 3 and a channel that just displays COX's logo.

I went into the Tasks > Settings > Guide > Edit channels area and clicked a button that was something along the lines of Auto Find. It then, overnight, scanned through the 383-some channels, some of which had lock icons. When I checked it this morning, most of the channels it found were just a black screen, and a few more odd channels showed up (channel that's just an ad for COX's ondemand programming) but still no local networks, no FOX, NBC, ABC, CBS, etc, and none of the cable channels that show up on my TV.

I then tried manually adding the channel based on this site: http://www.silicondust.com/hdhomerun/lineup_web/US:22043#lineup_1374239 and still couldn't get it to work, but i'm also confused as to whether I should be adding the virtual or channel number replacing the "-" for a ".". So when I tried FOX, I initially tried adding 5.1 as a 256 QAM channel. It loaded but when I went to the channel there was nothing, so I tried it again as 5.1 with 64 QAM, nothing, and even tried 28.2 as both 256 and 64 to no avail.

So, what am I doing wrong here? Why when I plug the cable directly into my TV it finds everything no problem but only a few sub channels and C-SPAN show up when it goes through the Duet?


Windows 7 x64
Avermedia Duet
AMD Athlon X2 7550
3 GB ram

edit: spoke too soon

chris.h:

...I went into the Tasks > Settings > Guide > Edit channels area ...

Did you push the "Show Preview" button, and then step through each channel, to see if any channels were disabled that shouldn't have been?

 Also, some hdtvs show signal strength and the physical channel number (not the logical/number you associate with a channel). The physical channel number is the channel number you should add. If it works, you can then go into edit channels and change the logical number.

PS. I don't know if add qam channel actually works, the one channel I am missing has too many digits to enter: 69-1049

 MS help link for editing qam channels: http://clubhouse.microsoft.com/Public/Post/67b9cd4a-e037-42c1-ba46-c4abe2a4bbdd 

 

Yeah, I went through all the disabled ones and there was nothing on any of those channels. I gave up and am now using a tuner with it. The only channels I cared about watching and recording have strong OTA singals anyways.

Is this somehow a limitation of the card being QAM/ASTC and my signal that's coming over the cable still being analog? I assume not since I tune to 5.1 on my TV to watch fox, 4.1, 4.2, 4.3 for NBC...

What I don't get is how, when the cable is plugged directly into my TV, I can pull up fox on 5.1, but when I try and add 5.1 manually in media center I get nothing when I tune to that channel.

UGH.

And again, when I use the ASTC tuner on the card I get all the local channels that are broadcasting perfectly fine, and when it's hooked up to my cable I get CSPAN so it seems like the tuner works fine, but something just isn't working right with my cable channels. This makes my brain hurt.

Ok maybe my problem is that the signals coming in from COX are NTSC. I plugged the cable into my 2001 era TV and it found all my cable channels.

Still doesn't explain why 5.1 and the like wont show up, could be encrypted I guess.