In the United States, TV band devices are intelligent, fixed or mobile radios that transmit and receive information on unused portions of the TV band, between 54-698 MHz–the same frequency range that professional wireless microphones use. They employ a database to determine which frequencies are safe to occupy. There is no single device that will be *the* TV band device, rather, many technologies that exist today will undergo certification to utilize television white spaces and become TVBDs.  MORE