151n
Index Data Technology Repairs Car care Controls Overview
AM, LW and SW broadcast signals
have substantially longer reception
ranges than FM transmissions. This is
because the broadcast signals propa-
gated at ground level in the form of sur-
face waves are also reflected from the
ionosphere as atmospheric waves.
Frequency modulation FM provides
substantially better sound quality than
the other frequency bands. However,
because FM transmissions rely on line-
of-sight broadcast waves, their effec-
tive reception range is limited.
The limitations inherent to radio recep-
tion in a moving vehicle have been min-
imized by a number of innovative
system designs.
360de084
Car radio reception
Online Edition for Part No. 01 41 0 156 878 - © 06/02 BMW AG
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