Since June 12, 2009, all over-the-air TV broadcasts are broadcasting in digital. The images conjured up of analog snow and ghosts are a thing of the past. HDTV broadcast quality is often superior to the quality of the same HD programs received through cable. Not only the quality is better than that of cable, OTA HDTV is free of charge. Actually getting something better for cheaper.
Check the reception maps for available local channels in your area by zipcode.