D) Using The Fm Radio - Renkforce RF-ARA-300 Operating Instructions Manual

d) Using the FM radio

RDS as reception concept
The abbreviation "RDS" stands for Radio Data System, i.e. additional inaudible coded information is transmitted via
the RDS station.
Your car radio is a device that can evaluate these coded data that are transmitted by most radio stations.
The following essential additional data is transmitted:
- Programme Identification (PI)
- Traffic Programme (TP)
- Traffic Announcement (TA)
- Programme Service (PS)
- Alternative Frequencies (AF)
- Programme Type (PTY)
Programme Identification (PI)
These data help the receiver to identify a station. It enables the radio to differentiate between areas where the same
programme is transmitted. When the reception signal gets weaker, the car radio only switches to a station with a
stronger signal if it transmits the programme with identical identification.
Traffic Programme (TP)
This signal enables the receiver to detect that a station with a traffic programme is being received.
Traffic Announcement (TA)
With this signal, the receiver can detect a traffic announcement and interrupt the playback of a different audio source.
Programme Service (PS)
This information tells the receiver which station it is receiving. The station name, e.g. BAYERN 3, appears on the
display of the car radio.
Alternative Frequencies (AF)
A list of alternative frequencies that send the same programme is transmitted. If the signal of the received station
becomes too weak, the receiver detects from the AF signal at which frequencies it must search for a station with a
stronger signal.
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