Abstract: A signal-coding unit, to be used with a radio receiver compatible with the RDS standard, receiving as input an input signal according to RDS standard comprising not indicative information about the radio receiver, and emitting as output an output signal, comprising signal-combining means for combining at least one portion of the input signal with a signal component comprising indicative information about the radio receiver, the combination between the above mentioned portion of the input signal and the signal component being the output signal (FIG. 2).

Abstract: A signal-coding unit, to be used with a radio receiver compatible with the RDS standard, receiving as input an input signal according to RDS standard comprising not indicative information about the radio receiver, and emitting as output an output signal, comprising signal-combining means for combining at least one portion of the input signal with a signal component comprising indicative information about the radio receiver, the combination between the above mentioned portion of the input signal and the signal component being the output signal (FIG. 2).

Abstract: An apparatus and a method for the reception of radio signals transmitted by an RDS system provide the selection and reception of a first frequency; the selection, during the reception of the first frequency, of a second frequency, different from the first frequency and not included in the AF list of frequencies alternative to the first frequency; and the switching of the reception between the first and second frequency upon comparison of RDS data relative to the second frequency with previously stored RDS data.