Hauppauge WinTV-NOVA-T PCI
Hauppauge uses the WinTV-Nova moniker for their digital TV PCI cards that lack an onboard MPEG-2 decoder (i.e. the designation is used for their so-called "budget" or software decoding cards). The -T suffix signifies that the device is for DVB-T reception. There have been two different types of card sold under the name WinTV-NOVA-T PCI.
Original Version(s)
The first version(s), sold approximately before about July 2004, were based on the Philips SAA7146 interface chip and used either a Philips TDA10046 or TDA10045 or LSI L64781 demodulator.
All of these variants are well-supported. The earliest cards featuring the LSI demodulator work "out of the box". For the receivers featuring the TDA demodulators, you need to identify your chip and see the TDA10045 or the TDA10046 pages. Since there doesn't appear to be a way to tell which one you have programatically you'll probably have to take the card out and look.
In most systems and for average users these cards work satisfactorily, the Linux drivers are well-tested and robust. Due to the limitations of the quite old-fashioned hardware there may exist some quirks when using multiple cards in a system. Tuning is slower than in competing designs.
New Version
This model is based on a Conexant cx2388x.
It should be automagically detected and work "out of the box" since kernel 2.6.12 and onwards. If by chance it is not, try getting the card to work by simply running "modprobe cx88_dvb".