commodore64_love writes: The US Congress, through the FCC and National Telecommunications and Information Administration, has spent 35 million dollars to assist low-power stations upgrade from Analog NTSC to Digital ATSC television. An additional 9 million dollars is still available for station managers and owners. Low Power, Clear Air, Translators, and same-channel boosters may obtain up to $20,000 grants to replace their analog gear with new digital-capable equipment, such as transmitting and receiving antennas, translators, and cables (complete list here: http://www.ntia.doc.gov/lptv/Eligible_Equipment_for_LPTV_Upgrade_Program.htm ).
There are around 7,000 of these analog stations still left in the country. Although the full-power transition happened back in June 2009, low power stations may continue broadcasting analog indefinitely. US neighbors Canada and Mexico will cease their analog operations on August 31, 2011 and 2015 respectively.