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274
YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
4-2. Audio System
■ AM characteristics
AM signals bend around such things as buildings or mountains and
bounce off the ionosphere.
Therefore, they can reach longer distances than FM signals.
Because of this, 2 stations may sometimes be picked up on the
same frequency at the same time.
Ionosphere
Station 1
Station 2
■ FM characteristics
An FM broadcast range is usually about 25 - 30 miles (40 - 50 km)
from the source. Because of extra coding needed to break the
sound into 2 channels, stereo FM has even less range than monau-
ral (non-stereo) FM.
FM Station
25 - 30 miles (40 - 50 km)
Radio Reception
1
2
3
1
2
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