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Program Type (PTY)
This code gives the receiver information on the type of the transmitted programme (e.g. sports, classic,
news etc.). The listener can select his favourite programme more directly.
A national disaster alarm can also be sent this way. However, not all the radio stations offer the PTY ser-
vice.
EON Information (EON)
Many radio station chains with various programmes only have one programme with traffic information.
If EON information is transmitted, a radio equipped with an EON function switches to the Traffic Announ-
cement station whenever such announcements are made, even if a different programme of this chain is
being played.
If you listen to BR Klassik (no traffic announcement) and the TA function is activated, the radio will switch
to Bayern 3 (with traffic announcements) for the time of a traffic announcement.
Clock time (CT)
Many stations transmit the current time in the RDS data. If a radio receives this signal, it sets the in-built
clock automatically.
Therefore, when you leave the transmission area, the RDS system has the advantage that it switches to
a similar transmitter station that can be better received. However, it only changes when it finds a better
station with the same programme.
Short signal attenuations due to the reception cannot be eliminated by the RDS system either, since this
would mean that the car radios permanently switches back and forth. The listener would feel much more
disturbed by this than by short-term reception problems.
Another advantage of the RDS system is that the station name is displayed. The station name of an RDS
station is displayed in the car radio.
