Renkforce HEADUNiT CD-3308 Notice D'emploi page 59

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ENGLISH 59
Version 11/06
Operation
refer to page 40
Alternative frequencies (AF)
A list of alternative frequencies that send the same programme is transmitted. If the
transmitter station currently received becomes too weak, the receiver detects from the
AF signal on which frequencies it must search for a better transmitter.
Programme type (PTY)
This code gives the receiver information about the type of the transmitted programme
(e.g. sports, classic, news etc.). The listener can select his favourite programme
purposefully.
A national disaster alarm can also be prepared this way. However, not all the radio
stations offer the PTY service.
EON information
Many chains of radio stations 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 Announcement station whenever such announcements
are made, even if a different programme of this chain is being played.
If you listen to Bayern 4 for example (no traffic announcement) and the TA button 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 transmitter 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.