Loading ...
Loading ...
Loading ...
Car Aud io Operation/Tips
Gener al information
For radio operation see your radio manual
which is included with your on-board litera-
ture.
Please observe the chapter ”LOAD SWITCH-
OFF AFTER 2 HOURS OR 7 DAYS” on page
259.
FM rece ption
A vehicle is not an ideal place to listen to a radio.
Because the vehicle mov es, reception conditions
are constantly changing. Buildings, terrain, signal
distance and noise from other vehicles are all
working again st good reception. Some cond itions
affecting FM may a ppear to be problems when they
are not.
The following characteristic s are completely
normal for a given recepti on area, and they do
not indicate any problem with the radio itself.
Note
Electronic accessories should only be installed by
your authorize d Porsc he dealer. Equipment which
has not been tested and approved by Porsche may
impair radio function and reception.
Fading a nd drifting
FM range is limited to about 25 miles (40 k m),
except for some high power stations.
If a vehicle is moving away from the desired
station’s transmitter, the signal will tend to fade
and/or drift . This condition is more prevalent
with FM than AM, and is often accompanied by
distortion. Fading and drifting can be minimized to
a certa i n degree by careful attention to fine tuning
or selection of a stronger s ignal.
Static and uttering
When the line-of-sight link between a transmitter
and vehicle is blocked by large buildings or moun-
tains, the radio sound may be accompanied with
static or fluttering because of the characteristic of
FM. In a similar effect, a fluttering noise is some-
times heard when driving along a tree-lined road.
This static and fluttering can be reduced by adjust-
ing the tone control for greater bass response until
the disturbance has passed.
Multipath
Because of the reflecting characteristics of FM,
direct and reflected sign als may reach the antenna
at the same time (multipath ) and cancel each other
out. As a veh icle moves through these electronic
dead spots, the listener may hear a momentary
flutter or loss of reception.
Station swapping
When two FM stations are close to each other, and
an electronic dead spot, such as static or multipath
area, interrupts the origina l signal , sometimes
the stronger second signal will be selected
automatically until the original one returns. This
swapping can also occur as you drive away from
the selected station and approach another s tation
of a stronger signal.
Controls, Instruments
185
Downloaded from www.ManualsFile.com manuals search engine
Loading ...
Loading ...
Loading ...