Mazda Proteg Bedienungshandbuch Seite 152

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Seitenansicht 151
Driving Your Mazda
Radio Reception
I
AM Characteristics
V
Station
mixing
AM signalsbend around such tbings as
buildings
or mountains and bounce off
the ionosphere. Therefore. lhey can reach
longer distances than FM signals.
Because oflhjs. lwo stations may
somedmes
be
picked
up on the same
frequency at the same time.
I FM
Characteristics
An FM
broadcasirange
is usually about
4G-50 km
(25-30miles)
from the
source. Because ofextra coding
needed
to break ihe sound into two channels,
siereo FM has even less range t}an
monaural
(non
stereo)
FM.
Signals from an FM ransmitter ale
similar to beams oflightbecause they do
not bend around corners. but they do
reflect. Unlike
AM signals, FM signals
cannot iravel b€yond the horizon.
Therefore. FM stations cannot be
received al the
great
distances
possible
with AM reception.
Al'nospheric conditions can also affect
FM receplion.
High humidity will cause
poor
receplion. However, cloudy days
may
provide
beller
r€ception than clear
days.
100 200 rm i60-120niles
5-52
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