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The radio Data System RDS is the multiplex transmission system of Tuning Aid and other messages with the VHF/FM broadcasting. The specifications of the RDS were published by EBU (European Broadcasting Union) in March, 1984, (1). The regular broadcasting of RDS is being executed in Sweden. It will begin in U.K. in September, 1987, and in W. Germany in April, 1988. Other European countries will follow these countries.