I've been using one for about 6-months. The input is off-the-air digital 
TV, using a KWorld tuner card and a rabbit-ears antenna from Wal-Mart. 
It gets all of the local network stations, plus a bunch of PBS, spanish, 
ION (independent, used to be PAX), etc.
Everything works great*, though I haven't tried integrating it into a 
living room setup (TV-out, RemoteControl, etc.); I watch on my computer 
or burn video DVDs (using MythArchive), or have most programs setup to 
transcode to small (320x240) H.264 files for viewing on cellphone or 
sub-notebook.
* Well, not exactly 'everything': EIT has a problem. I don't subscribe 
to a TV-Guide service. MythTV is sucking the schedule information right 
out of the EIT (extended information table) that is embedded in all 
digital signals. That works fine, and I don't think that it has ever 
failed to get an episode that it was supposed to, but for some reason 
the EIT data gets mis-aligned sometimes, and the 'blurb' doesn't match 
the show. I don't mean same show week-to-week; I mean the blurb for 
Sesame Street is shown on the playback screen for a Nova episode. 
Relatively minor annoyance, since the show title is always correct.
--ronan
>
> The breakout box connection to the combination video/tuner AGP card is 
> flaky so I'm probably going to replace that single card with two 
> cards, one an AGP video card, and one a PCI tuner/video in. I'm 
> debating which OS to put on it though; the sticking point is either 
> QAM tuning (which I haven't liiked into) or my USB-UIRT (pretends it's 
> a remote control to make a cable box change channels). There were only 
> a few people asking about the USB-UIRT, and support for it looks 
> spotty at best.
>
> Any idea which cards I should get? Ones not having a breakout box are 
> preferred, since that way there's no connection to get flaky.
>
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