Direct Frequency Tuning; Manual Tuning; Pushbutton Tuning - Mercedes-Benz 420 SEL 1989 Owner's Manual

Direct frequency tuning

In order to select a station with a known frequency, select the wave band (AM
or FM), press the function control button Q a n d then enter the frequency by
pressing the corresponding pushbuttons.
Example:
Press any button marked
Press the function control button
Enter frequency by pressing
When tuning a frequency directly, the pushbutton number is not displayed on
the panel. The wave band is indicated by showing " MHz" for FM or " kHz" for
AM.
Note:
All AM stations have allocated frequencies ending with a " 0" .
All FM stations have allocated frequencies ending with an odd-numbered digit
following the decimal point.
Broadcasters sometimes may not give their exact frequency but the next
closest whole number.
US radio frequency ranges:
AM 540-1600 kHz
FM 88.1-107.9 MHz
Please note: It is recommended that direct frequency tuning operations be
performed by the driver only while the vehicle is not moving. The driver should
use the automatic station seeker/scanner or pushbutton tuning when the
vehicle is in motion.
56
FM 98.5 MHz AM 1050 kHz
a a
Q3ul
through ^ 2 1 through
033 m
Q [ 2 3 033

Manual tuning

(For fine tuning a station or for manual
tuning)
After selecting the desired AM or FM
wave band, press the manual tuning
VM
button
quency) o r|^ (in c re a s in g station fre­
quency).
3
The frequency will increase or
033 033
decrease respectively in increments
of 0.1 MHz for FM or 1.0 kHz for AM.
Release the button when the desired
station is tuned in.

Pushbutton tuning

Six FM stations and four AM stations
can be stored in memory and recalled
by pressing t he appropriate buttons
marked
through
(decreasing station fre­
through for FM or
for AM stations.