Aerial Systems

The MINI includes an antenna diversity system which uses the heated rear window (FM2/3) in addition to the rod aerial.

Rod Aerial with Diversity

Fig 1: Identifying Antenna Diversity System Components

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Fig 2: Rod Aerial

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Fig 3: Aerial Filter

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Fig 4: Identifying Aerial Amplifier Unit

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Fig 5: Identifying Aerial Diversity Unit

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The Aerial Diversity Unit has coaxial inputs from the roof aerial and the rear screen aerial amplifier unit. The unit also has the output coaxial to the radio headset and a radio on wire. The switching action of the diversity unit is configured to ensure that no noise is heard through the radio (diversity crackle). The unit constantly scans the aerial inputs for the best signal, which is then fed to the radio headset via the coaxial cable. The diversity function is only operational in the FM mode, when AM stations are being received the diversity function is deactivated.

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