Mercedes-Benz 300 SD 1978 Owner's Manual page 31

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Radio
A utom atic Antenna
The antenna switch can be actuated
with the radio switched on and the key
in steering lock positions " 1" or " 2" .
If the antenna switch is in center
position, the antenna extends
autom atically to a specific height,
if the antenna switch is engaged in
the " m ax" position, the antenna
extends fully,
if the antenna switch is engaged in
the " o ff" position, the antenna will
not extend or will retract
com pletely.
30
The height of the antenna can
fu rth e rm o re be adjusted continuously
by actuating the antenna switch:
If the antenna switch is in center
position, the antenna will extend to
the specific height. The antenna
can be fu rth e r extended or
retracted to any height by rocking
the switch (not engaging it).
If the antenna is to be retracted,
e. g. fo r playing cassettes, engage
switch in " o ff" position.
When the key is turned to steering
8 8 6 4
lock position " 0" or the radio is turned
off, the antenna will retract
com pletely.
FM Reception
FM signals travel in a "lin e -o f-s ig h t" .
Reflections or " dead spots" may
cause cancellations o r loss of the
signal as well as strong signal
overloading o r capture.
Lowering the antenna height in strong
signal areas may elim inate m any of
the resulting problem s and restore
good tone quality. However, fringe
area reception requires the full
antenna length to capture weak
incom ing signals. The antenna can be
operated by depressing the
respective side of the rocker switch.
FM Stereo Reception
When tuned to a FM stereo station, the
Stereo Indicator Light will light up.
EJecause m ore inform ation is carried
in the FM stereo signal than in FM
m onoraul broadcasts, flutter,
cancellation and capture effects may
be even m ore noticeable. The
noisefree broadcast range, therefore,
is som ew hat less and accurate tuning
to the strongest available stereo
stations is required, especially fo r
fring e area reception.
Your radio is equipped with a
specially designed Stereo D ecoder
w hich autom atically switches the
radio from stereo to m ono reception if
the signal becom es too weak.
However, the Stereo Indicator Light
rem ains lit to avoid the distracting
flic ke r at sh o rt-tim e signal changes.
The radio w ilfre tu rn to the stereo
m ode autom atically when signal
strength perm its it.

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