Jeep 2006 Commander User Manual download pdf (Page 200)

100

101

Two Types of Signals

There are two basic types of radio signals... AM or

Amplitude Modulation, in which the transmitted sound

causes the amplitude, or height, of the radio waves to

vary... and FM or Frequency Modulation, in which the

frequency of the wave is varied to carry the sound.

Electrical Disturbances

Radio waves may pick up electrical disturbances during

transmission. They mainly affect the wave amplitude,

and thus remain a part of the AM reception. They

interfere very little with the frequency variations that

carry the FM signal.

AM Reception

AM sound is based on wave amplitude, so AM reception

can be disrupted by such things as lightning, power lines

and neon signs.

FM Reception

Because FM transmission is based on frequency varia-

tions, interference that consists of amplitude variations

can be filtered out, leaving the reception relatively clear,

which is the major feature of FM radio.

NOTE: On vehicles so equipped the radio, steering

wheel radio controls and 6 disc CD/DVD changer will

remain active for up to 45 seconds after the ignition

switch has been turned off. Opening a vehicle front door

will cancel this feature.

SALES CODE RAQ – AM/FM/CD (6-DISC) RADIO

WITH OPTIONAL SATELLITE RADIO, HANDS

FREE PHONE, AND VEHICLE ENTERTAINMENT

SYSTEMS (VES) CAPABILITIES

NOTE: The radio sales code is located on the lower right

side of your radio faceplate.

200 UNDERSTANDING YOUR INSTRUMENT PANEL

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Jeep 2006 Commander User Manual Page 200

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