Antenna And Diversity; Sport Wagon Antenna System - BMW 1999-2005 M3 Service Manual

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Antenna

Antenna and diversity

The antenna used for the radio,
telephone and FZV remote entry
system is integrated with the rear
window defogger in the Sedan and
Coupe models.
Convertible and Sport Wagon models
feature a diversity antenna system to
provide the strongest possible radio
station signal to the sound system.
In this system there are two (or more)
antennas. Both the main and the
auxiliary antenna(s) receive radio
signals and both signals are amplified
in separate amplifiers. The signals are
then transmitted to the diversity
switching module, which locks onto the
strongest signal and sends it to the
radio receiver.

Sport Wagon antenna system

The diversity antenna system on the
E46 Sport Wagon consists of the
following;
FM1 antenna in rear window (right
half)
FM2 antenna in rear window
(center)
FM3 antenna in left rear side
window
AM antenna in rear spoiler
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2/25/2009 11:19 PM