CITROEN C4 Aircross 2013 Owner's Handbook Manual page 323

04 RADIO
RDS
The "Radio Data System" (RDS) function on the FM waveband
permits:
- access to the display of information, such as the name of the
station, ...
- listening to the same station while travelling through different
regions,
- temporary tuning to traffi c information announcements.
Most FM stations use RDS. These stations transmit non-audible data
in addition to their programmes.
The data transmitted in this way allows you access to various
functions, mainly displaying of the name of the station, automatic
retuning to alternative frequencies or temporary retuning to traffi c
information announcements.
RDS allows you to continue listening to the same station by means
of alternative frequencies that carry the same station. However, in
certain conditions, RDS alternative frequencies may not be provided
throughout the country. Radio stations do not cover the whole country,
which explains the loss of reception of the station during a journey.
Press the MENU button.
Press the SEL knob repeatedly to
select the RDS mode: "AF", "REG"
and "TP" then turn the knob to select
the desired value.
"AF" alternative frequencies
Your radio automatically checks and selects the best frequency for
the radio station to which it is tuned (if the station broadcasts on
several transmitters or frequencies).
The frequency of a radio station covers approximately 30 miles
(50 km). The change from one frequency to another explains the
temporary loss of reception during a journey.
If the station to which you are listening does not have several
frequencies in the region in which you are currently located, you can
deactivate alternative frequencies.
REG regional mode
Some stations are organised in a network.
In different regions, they broadcast different or shared programmes
depending on the time of day.
You can follow:
- a regional station only,
- the entire network, with the possibility that you will be listening
to a different programme.
On long distance journeys, when the stored station becomes weak,
the radio searches fi rst for another frequency for the same station
(AF). Then, if this fails, it searches for a frequency broadcasting the
regional programme (REG). If this also fails, the radio returns to the
stored station.
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