2003 Hyundai Sonata radio antenna

1- 78 FEATURES OF YOUR HYUNDAI
B750A02A-AATSTEREO SOUND SYSTEM
How Car Audio Works
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 high quality reproduction.
However, in some cases the signal coming to
your vehicle is not 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 broadcasts. This is because
AM radio waves are transmitted at low fre-
quency. 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 obstructions so that
they can provide better signal coverage.FM broadcasts are transmitted at high fre-
quency and do not bend to follow the earth's
surface. Because of this, FM broadcasts gen-
erally begin to fade at short distances from the
station. Also, FM signals are easily 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:
Ionosphere
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AM reception
Mountains
BuildingsUnobstructed
area FM radio station
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Ionosphere FM reception
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Obstructed areaIron bridges

FEATURES OF YOUR HYUNDAI 1- 79
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o Fading - As your car moves away from the
radio station, the signal will weaken and
sound will begin to fade. When this occurs,
we suggest that you select another stronger
station.
o Flutter/Static - Weak FM signals or large
obstructions between the transmitter and
your radio can disturb the signal causing
static or fluttering noises to occur. Reducing
the treble level may lessen this effect until the
disturbance clears.o Station Swapping - As a FM signal weakens,
another more powerful signal near the same
frequency may begin to play. This is be-
cause your radio is designed to lock onto the
clearest signal. If this occurs, select another
station with a stronger signal.
o Multi-Path Cancellation - Radio signals being
received from several directions can cause
distortion or fluttering. This can be caused by
a direct and reflected signal from the same
station, or by signals from two stations with
close frequencies. If this occurs, select
another station until the condition has passed.
B750B02Y-AATUsing a cellular phone or a two-way radio
When a cellular phone is used inside the vehicle,
noise may be produced from the audio equip-
ment. This does not mean that something is
wrong with the audio equipment. In such a case,
use the cellular phone at a place as far as
possible from the audio equipment.
CAUTION:When using a communication system such
a cellular phone or a radio set inside the
vehicle, a separate external antenna must
be fitted. When a cellular phone or a radio
set is used with an internal antenna alone,
it may interfere with the vehicle's electrical
system and adversely affect safe operation
of the vehicle.
WARNING:Don't use a cellular phone when you are
driving, you must stop at a safe place to use
a cellular phone.
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1- 100 FEATURES OF YOUR HYUNDAI
B870A01A-AATANTENNA
Fixed Rod Antenna (If installed)B870B01Y-AATPower Antenna (If installed)
Your car uses a fixed rod antenna to receive
both AM and FM broadcast signals.
This antenna is a removable type. To remove
the antenna, turn it counterclockwise. To install
the antenna, turn it clockwise.The antenna will automatically be extended
when the radio power switch is turned "ON"
while the ignition key is in either the "ON" or
"ACC" position. The antenna will automatically
be retracted and stored when either the radio
power switch is turned "OFF" or the ignition key
is set to the "LOCK" position.
NOTE:o Before turning on the radio, make sure
that no one is near the antenna.
o Before entering an automatic car wash
or a place with a low height clearance, be
sure that the antenna is retracted and
stored.
o If the antenna is dirty, be sure to clean it
in order to avoid an operation malfunc-
tion.CAUTION:o Be sure to remove the antenna before
washing the car in an automatic car
wash or it may be damaged.
o When reinstalling your antenna, it is
important that it is fully tightened to
ensure proper reception.
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