Hyundai 2009 Tucson, Owner'S Manual, Page: 120 / 273

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FEATURES OF YOUR HYUNDAI
109 109 109 109 109
STEREO SOUND SYSTEM
B750A02A-AAT
How Car Audio Works
AM broadcasts can be received at greater
distances than FM broadcasts. This is
because AM radio waves are transmitted
at low frequencies. These long, low fre-
quency radio waves can follow the curva-
ture of the earth rather than travelling
straight out into the atmosphere. In addi-
tion, they curve around obstructions so
that they can provide better signal cover-
age.
AM and FM radio signals are broadcast
from transmitter towers located around
your city. They are intercepted 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 pos-
sible 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 obstruc-
tions in the area.
FM broadcasts are transmitted at high fre-
quencies and do not bend to follow the
earth's surface. Because of this, FM broad-
casts generally begin to fade at short dis-
tances from the station. Also, FM signals
are easily affected by buildings, moun-
tains, 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:
Ionosphere
B750A02L
AM reception
Mountains
Buildings
Unobstructed
area
FM radio station
B750A03L
Ionosphere
FM reception
B750A01L
Obstructed area
Iron bridges