Manual TV (non-DT) Tuner Request Setup?

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Any future plans of support for analog TV mixed with HDTV?

You can already do that, its just that your specific card doesnt meet the requirements for GB-PVR analog card support. GB-PVR needs cards with built in MPEG-2 encoder hardware. I'm not aware of any models like that for the US, but they're starting to appear in other parts of the world - for example, the Hauppauge HVR-1300 does both DVB-T and MPEG-2 encoded analog.

If you're lucky, you might be able to get the analog stuff working with this plugin: http://forums.nextpvr.com/showthread.php?t=2753