DAB (Digital Audio Broadcasting) digital radio is a new way of broadcasting radio, in addition to FM analogue transmission, via a network of terrestrial transmitters. It provides listeners with more choices and information delivered in clear, crackle-free sound quality. The technology allows the receiver to lock on to the strongest signal it can find. With DAB digital stations there are no frequencies to remember, and sets are tuned by station name, so there is no retuning on the move.