218
UNDERSTANDINGYOURINSTRUMENTPANEL
youunderstandandsaveyouconcernaboutthese“ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
AMReception
AMsoundisbasedonwaveamplitude,soAMreception
canbedisruptedbysuchthingsaslightning,powerlines
andneonsigns.
TwoTypesofSignals
FMReception
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.
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
canbefilteredout,leavingthereceptionrelativelyclear,
whichisthemajorfeatureofFMradio.
NOTE:
On vehicles so equipped the radio, steering
ElectricalDisturbances
wheel radio controls and 6 disc CD/DVD changer will
remain active for up to 45 seconds after the ignition
switchhasbeenturnedoff.Openingavehiclefrontdoor
willcancelthisfeature.
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.
| Categories | Chrysler Manuals, Chrysler Town and Country Manuals |
|---|---|
| Model Year | 2006 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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