Driving
Y
our Mazda
5-86
Radio Reception
J AM
Characteristics
t Station Mixing
AM signals bend around such things as
buildings
and mountains and bounce of
f
the ionosphere. Therefore, they can
reach longer distances than FM signals.
But because of this, two stations may
sometimes be picked up at once on the
same frequency.
J FM
Characteristics
An FM broadcast range usually extends
up
to about 25 to 30 miles (40 to 50 km)
from
the source. Because of extra coding
needed to break the sound into two chan
-
nels,
stereo FM has even less range than
monaural (nonstereo) FM.
FM transmitter signals are similar to
beams of light because they don’t bend
around corners, but they do reflect.
Unlike AM signals, they cannot travel
beyond the horizon. That’s why FM sta-
tions can’t reach the great distances AM
stations can.
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