All TV stations will be switching to a digital signal in February of 2009. Older TV sets will need a digital converter to receive the new signal.
Questions
Are any of these digital converters made in the United States?
Which digital converter brand and model is favored most by consumers.
If you subscribe to cable or a satallite TV serice you will not need a converter.
I would suggest that you go to 45/49 web site where they have good information about what's available, but if you're looking for a Made In America converter forget it.
http://www.pbs4549.org/dtv4pbs/newsletters.htm
http://www.pbs4549.org/dtv4pbs/converter_coupons.htm
http://www.consumerreports.org/cro/electronics-computers/tvs-services/digital-tv-converter/ratings/dtv-converter-boxes-ratings.htm