By the way Powernotebooks was kind enough to give some more info about the TV Tuner LR535 that you can get for the HEL80:

it doesn't have FM radio built-in and the form factor is mini-PCI TYPE IIIB.

Please note that while this is a hybrid TV Tuner (digital & analog) that the digital portion is DVB-TV format which isn’t compatible with the digital format used in the US and Canada (ATSC).

I also know there are other USB and possibly cardbus type TV Tuners available but be sure they are NTSC for the current low res analog standard in the US and also ATSC capable for compatibility in the US.