Mercedes-Benz C-CLASS WAGON C 240 Operator's Manual page 211

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You can only enter frequencies within
the respective waveband.
If a button is not pressed within
four seconds, the radio will return to
the last station tuned.
Manual tuning
Select desired waveband.
Press S or T button for approx.
three seconds.
Press button repeatedly until desired
frequency has been reached.
Step-by-step station tuning takes place
in ascending or descending order. Each
time the button is pressed, the radio
tunes further by 0.2 MHz. During
manual tuning, the radio is muted.
Automatic seek tuning
Select desired waveband.
Press S or T button briefly.
The radio will tune to the next highest
or next lowest receivable frequency.
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If no station is received after two
consecutive scans of the complete
frequency range, then the scan stops
at the frequency from which it began.
Controls in detail
Audio system
Scan search
Starting scan search
Select desired waveband.
Press soft key.
SC
SC will appear in the display. The
radio briefly tunes in all receivable
stations on the waveband selected.
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