Outside Temperature
If the outside temperature is more than 131°F (55°C), the
display will show 131°F (55°C). When the outside tem-
perature is less than
2
40°F (
2
40°C), the display will
show
2
40°F (
2
40°C).
RADIO GENERAL INFORMATION
Radio Broadcast Signals
Your new radio will provide excellent reception under
most operating conditions. Like any system, however, car
radios have performance limitations, due to mobile op-
eration and natural phenomena, which might lead you to
believe your sound system is malfunctioning. To help
you understand and save you concern about these “ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
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.
UNDERSTANDING YOUR INSTRUMENT PANEL
215
4
Summary of Contents for Jeep Wrangler
Page 1: ...Wrangler O W N E R S M A N U A L 2 0 0 8 2008 Wrangler...
Page 3: ......
Page 8: ...INTRODUCTION 7 1...
Page 75: ......
Page 195: ......
Page 200: ...INSTRUMENT CLUSTER UNDERSTANDING YOUR INSTRUMENT PANEL 199 4...
Page 259: ......
Page 306: ...STARTING AND OPERATING 305 5...
Page 349: ......
Page 363: ...ENGINE COMPARTMENT 3 8L 362 MAINTAINING YOUR VEHICLE...
Page 429: ......
Page 430: ...INDEX 10...