radio antenna Hyundai Sonata 2011 Owner's Manual - RHD (UK, Australia)

4107
Features of your vehicle
✽✽NOTICE
If you install an aftermarket HID head
lamp, your vehicle’s audio and electron-
ic device may malfunction.
Glass antenna (if equipped)
When the radio power switch is turned on
whilst the ignition switch is in either the
“ON” or “ACC” position, your car will
receive both AM and FM broadcast sig-nals through the antenna in the rear win-
dow glass.
AUDIO SYSTEM
OYF049150
CAUTION
• Do not clean the inside of the rear
window glass with a cleaner or
use a scraper to remove foreign deposits as this may cause dam-age to the antenna elements.
Avoid adding metallic coatings such as Ni, Cd, and so on. Thesecan disturb receiving AM and FMbroadcast signals.

4109
Features of your vehicle
How car audio works
AM(MW, LW) and FM radio signals are
broadcast from transmitter towers locat-
ed 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 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 dis-
tance from the radio station, closeness of
other strong radio stations or the pres-
ence of buildings, bridges or other large
obstructions in the area.AM(MW, LW) broadcasts can be
received at greater distances than FM
broadcasts. This is because AM(MW,
LW) radio waves are transmitted at low
frequencies. 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
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 easily affected by build-
ings, mountains, or other obstructions.
These can result in certain listening con-
ditions which might lead you to believe a
problem exists with your radio. The fol-
lowing conditions are normal and do not
indicate radio trouble:
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AM(MW, LW) reception FM radio station
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FM reception

Features of your vehicle
110
4
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 selectanother stronger station.
Flutter/Static - Weak FM signals or large obstructions between the trans-
mitter and your radio can disturb the
signal causing static or fluttering nois-
es to occur. Reducing the treble level
may lessen this effect until the distur-
bance clears. Station Swapping - As a FM signal
weakens, another more powerful sig-
nal near the same frequency may
begin to play. This is because your
radio is designed to lock onto the clear-
est signal. If this occurs, select anoth-er station with a stronger signal.
Multi-Path Cancellation - Radio signals being received from several directions
can cause distortion or fluttering. This
can be caused by a direct and reflect-
ed signal from the same station, or by
signals from two stations with close
frequencies. If this occurs, selectanother station until the condition haspassed.
Using a mobile phone or a two-way
radio
When a mobile phone is used inside the
vehicle, noise may be produced from the
audio equipment. This does not meanthat something is wrong with the audio
equipment. In such a case, use the
mobile phone at a place as far as possi-
ble from the audio equipment.
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CAUTION
When using a communication sys- tem such a mobile phone or a radioset inside the vehicle, a separate
external antenna must be fitted.When a mobile phone or a radio set is used with an internal antennaalone, it may interfere with the vehi- cle's electrical system and adverse-
ly affect safe operation of the vehi- cle.
WARNING
Don't use a mobile phone when you
are driving. You should stop at a
safe place to use a mobile phone.
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