Loading ...
Loading ...
Loading ...
(188,1)
[ Edit: 2015/ 7/ 9 Model: F15-D ]
4-36 Heater, air conditioner, audio and phone systems
function in your vehicle radio system.
Reception conditions will constantly change
because of vehicle movement. Buildings, terrain,
signal distance and interference from other
vehicles can work against ideal reception.
Described below are some of the factors that
can affect your radio reception.
Some cellular phones or other devices may
cause interference or a buzzing noise to come
from the audio system speakers. Storing the
device in a different location may reduce or
eliminate the noise.
SAA0306
FM radio reception:
GUID-F83C168B-173D-4313-B631-F712588C0463
Range: FM range is normally limited to 25 to 30
miles (40 to 48 km), with monaural (single
station) FM having slightly more range than
stereo FM. External influences may sometimes
interfere with FM station reception even if the
FM station is within 25 miles (40 km). The
strength of the FM signal is directly related to the
distance between the transmitter and receiver.
FM signals follow a line-of-sight path, exhibiting
many of the same characteristics as light. For
example they will reflect off objects.
Fade and drift: As your vehicle moves away from
a station transmitter, the signals will tend to fade
and/or drift.
Static and flutter: During signal interference from
buildings, large hills or due to antenna position,
usually in conjunction with increased distance
from the station transmitter, static or flutter can
be heard. This can be reduced by lowering the
treble setting to reduce the treble response.
Multipath reception: Because of the reflective
characteristics of FM signals, direct and re-
flected signals reach the receiver at the same
time. The signals may cancel each other,
resulting in momentary flutter or loss of sound.
AM radio reception:
GUID-F83C168B-173D-4313-B631-F712588C0463
AM signals, because of their low frequency, can
bend around objects and skip along the ground.
In addition, the signals can be bounced off the
ionosphere and bent back to earth. Because of
these characteristics. AM signals are also
subject to interference as they travel from
transmitter to receiver.
Fading: Occurs while the vehicle is passing
through freeway underpasses or in areas with
many tall buildings. It can also occur for several
seconds during ionospheric turbulence even in
areas where no obstacles exist.
Static: Caused by thunderstorms, electrical
power lines, electric signs and even traffic lights.
Condition:
Loading ...
Loading ...
Loading ...