9-3 (9440) V6-2.8L Turbo (2008)
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Antenna Amplifier: Description and Operation
Antenna Amplifier (624)
4D
Antenna Amplifier, 4D (624)
Location
Main task
Amplify the antenna signal from the rear window antenna.
Type
Output amplifier to strengthen a weak incoming antenna signal to a stronger signal that the infotainment head unit can use.
Connection
The antenna amplifier is supplied trigger voltage from pin 13 of the infotainment head unit and is grounded by being secured to the chassis. The
strengthened antenna signal is taken out and fed to the infotainment head unit via a coaxial cable.
