CX-7_8V28-EA-06B_Edition2Page233
Monday,March1320065:6PM
Blackplate(233,1)
InteriorComfort
AudioSystem
qRadioReception
SignalsfromanFMtransmitteraresimilar
tobeamsoflightbecausetheydonot
bendaroundcorners,buttheydoreflect.
UnlikeAMsignals,FMsignalscannot
travelbeyondthehorizon.Therefore,FM
stationscannotbereceivedatthegreat
distancespossiblewithAMreception.
AMcharacteristics
AMsignalsbendaroundsuchthingsas
buildingsormountainsandbounceoffthe
ionosphere.Therefore,theycanreach
longerdistancesthanFMsignals.Because
ofthis,twostationsmaysometimesbe
pickeduponthesamefrequencyatthe
sametime.
Ionosphere
FM wave
AM wave
Ionosphere
FM wave
100—200
km (60—120 miles)
Atmosphericconditionscanalsoaffect
FMreception.Highhumiditywillcause
poorreception.However,cloudydays
mayprovidebetterreceptionthanclear
days.
Station 1
Station 2
FMcharacteristics
AnFMbroadcastrangeisusuallyabout
40
―50km(25―30miles)fromthe
Multipathnoise
source.Becauseofextracodingneededto
breakthesoundintotwochannels,stereo
FMhasevenlessrangethanmonaural
(non-stereo)FM.
SinceFMsignalscanbereflectedby
obstructions,itispossibletoreceiveboth
thedirectsignalandthereflectedsignalat
thesametime.Thiscausesaslightdelay
inreceptionandmaybeheardasabroken
soundoradistortion.Thisproblemmay
alsobeencounteredwheninclose
FM Station
proximitytothetransmitter.
40—50km
(25—30
miles)
Reflected wave
Direct
6-17
FormNo.8V28-EA-06B
| Categories | Mazda CX-7 Manuals, Mazda Manuals |
|---|---|
| Model Year | 2007 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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