Operation Manual

4-53
Multimedia System
4
AM and FM radio signals are broadcast
from transmitter towers located around
your city. They are intercepted by the
radio antenna on your vehicle. This sig-
nal is then received by the radio and
sent to your vehicle speakers.
When a strong radio signal has
reached your vehicle, the precise engi-
neering of your audio system ensures
the best possible quality reproduction.
However, in some cases the signal
coming to your vehicle may not be
strong and clear.
This can be due to factors, such as the
distance from the radio station, close-
ness of other strong radio stations or
the presence of buildings, bridges or
other large obstructions in the area.
AM broadcasts can be received at
greater distances than FM broad-
casts. This is because AM radio
waves are transmitted at low fre-
quencies. These long, low frequency
radio waves can follow the curvature
of the earth rather than travelling
straight out into the atmosphere. In
addition, they curve around obstruc-
tions so that they can provide better
signal coverage.
FM broadcasts are transmitted at
high frequencies and do not bend to
follow the earth's surface. Because
of this, FM broadcasts generally
begin to fade at short distances from
the station. Also, FM signals are eas-
ily affected by buildings, mountains,
or other obstructions. These can
result in certain listening conditions
which might lead you to believe a
problem exists with your radio. The
following conditions are normal and
do not indicate radio trouble:
HOW VEHICLE AUDIO WORKS (EXCEPT EUROPE)
JBM001 JBM002
FM reception AM (MW, LW) reception
JBM003
FM radio station