I just tried using xawtv and a couple of other utilities, and they seem
to receive a signal on the channels that should have signals, however
the image is in black and white, and it is not 'stable'. It's quite
fuzzy and the image cycles up and down. I tried fine-tuning it, but
that didn't seem to fix anything.
I'm guessing automatic scanning isn't working because the reception
seems to be so bad.