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Knowing your vehicle
How car audio worksAM and FM radio signals are broad-
cast from transmitter towers located
around your city. They are intercept-
ed by the radio antenna on your car.
This signal is then received by the
radio and sent to your car speakers.
When a strong radio signal has
reached your vehicle, the precise
engineering 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, closeness 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.AUDIO SYSTEM
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JBM001
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FM reception AM reception
