freeview card

[crackernut2]

at the back of my wharfedale digital tv there is a slot presumably for a card. do I need a card for freeview, if so what type and where from.
many thanks for any information.

[squarebear]

I would post this in technology rather than quizzes & puzzles but most freeview boxes work without the card. You only put the card in to get extra channels.

[Goofy]

or indeed in 'how it works'