"Did my TV screen just shrink?
That's the question a lot of people will be asking after installing one of the converter boxes that will keep their older TV sets tuned in to over-the-air broadcasts after February 17, when most stations will switch from analog to digital transmission.
The National Association of Broadcasters estimates that 70 million sets are in danger of losing their picture.
We tested two boxes and found them to produce a picture quality far better than any analog channel we could find, giving a whole new lease on life to a tube TV that lacks cable or satellite service (which will still work with older TVs after February 17). The boxes also gave us access to more channels than analog reception."
There is still a lot of confusion regarding the digital TV transistion here in the states, so if you're not sure how its going to affect you, best check with your local providers or consult the dtv.org website.