UNDERSTANDINGYOURINSTRUMENTPANEL
153
RADIOGENERALINFORMATION
ElectricalDisturbances
Radiowavesmaypickupelectricaldisturbancesduring
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
carrytheFMsignal.
RadioBroadcastSignals
Your new radio will provide excellent reception under
mostoperatingconditions.Likeanysystem,however,car
radios have performance limitations, due to mobile op-
erationandnaturalphenomena,whichmightleadyouto
believe your sound system is malfunctioning. To help
youunderstandandsaveyouconcernaboutthese“ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
AMReception
4
AMsoundisbasedonwaveamplitude,soAMreception
canbedisruptedbysuchthingsaslightning,powerlines
andneonsigns.
FMReception
TwoTypesofSignals
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
canbefilteredout,leavingthereceptionrelativelyclear,
whichisthemajorfeatureofFMradio.
There are two basic types of radio signals... AM or
AmplitudeModulation,inwhichthetransmittedsound
causes the amplitude, or height, of the radio waves to
vary... and FM or Frequency Modulation, in which the
frequencyofthewaveisvariedtocarrythesound.
| Categories | Jeep Manuals, Jeep Wrangler Manuals |
|---|---|
| Model Year | 2006 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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