UNDERSTANDING YOUR INSTRUMENT PANEL
121
Clock Setting Procedure
Turn the ignition switch to the ON or ACC position
and press the time button. Using the tip of a ballp oint pen
or similar object, press either the hou r (H) or minu te (M)
buttons on the rad io.
Two Types of Signals
There are two basic typ es of rad io signals... AM or
Amplitude Mod ulation, in which the transm itted sou nd
causes the amplitude, or height, of the rad io waves to
vary... and FM or Frequ ency Mod ulation, in which the
frequ ency of the wave is varied to carry the sou nd .
1.
2.
minu tes. The time setting will increase each time you
press a button.
Press the H button to set hou rs or the M button to set
Electrical Disturbances
4
Radio waves may pick up electrical distu rbances during
transm ission. They mainly affect the wave amplitude,
and thu s rem ain a part of the AM recep tion. They
interfere very little with the frequ ency variations that
carry the FM signal.
RADIO GENERAL INFORMATION
Radio Broadcast Signals
Your new rad io will provid e excellent recep tion und er
most operating cond itions. Like any system , how ever, car
rad ios have perform ance limitations, due to mobile op-
eration and natu ral phenom ena, which might lead you to
believe you r sou nd system is malfunctioning. To help
you und erstand and save you concern abou t these “ap -
parent” malfunctions, you must und erstand a point or
two abou t the transm ission and recep tion of rad io sig-
nals.
AM Reception
AM sou nd is based on wave amplitude, so AM recep tion
can be disru pted by such things as lightning, power lines
and neon signs.
FM Reception
Because FM transm ission is based on frequ ency varia-
tions, interference that consists of amplitude variations
can be filtered out, leaving the recep tion relatively clear,
which is the major featu re of FM rad io.
| Categories | Jeep Manuals, Jeep Wrangler Manuals |
|---|---|
| Model Year | 2004 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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