With the upcoming conversion to digital TV, a brief review of the March/09 edition of Consumer Reports might prove beneficial.
Beginning February 17, 2009, TV stations serving all markets in the United States will begin airing digital television programming. At that point, they will cease broadcasting on their current analog channels. If you own an analog television and do not purchase a new digital model, you may buy a converter box which will change digital signals back to analog. More information is available at dtv.gov.