Radio allowed information to be transmitted instantly over long distances, including text, speech and even pictures. The cheap electronics revolution of the 1970s saw a boom in Citizen Band and ham radios, These new formats include the BBC-endorsed Digital Audio Broadcasting (DAB) system. Teac has started selling the new old-fashioned radio CD layer namely the Teac SL-D920. These offer several strengths over normal radio including clearer reception. It transmitted from one place to the other either directly or through relays, through wires or wirelessly.
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