INSTRUMENT PANEL AND CONTROLS
221
RADIO GENERAL INFORMATION
Electrical Disturbances
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 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
4
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
Two Types of Signals
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.
There are two basic typ es of rad io signals... AM (Ampli-
tude Mod ulation), in which the transm itted sou nd causes
the amplitude, or height, of the rad io waves to vary... and
FM (Frequ ency Mod ulation), in which the frequ ency of
the wave is varied to carry the sou nd .
NOTE: For vehicles not equ ipped with the Electronic
Vehicle Inform ation Center (EVIC), the rad io and steering
wheel rad io controls (if equ ipped) will rem ain active for
| Categories | Jeep Liberty Manuals, Jeep Manuals |
|---|---|
| Model Year | 2008 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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