Antenna System

Antenna System

The antenna for radio and remote control services (FBD) on the E65/E66 are located in the ear window. They include an AM antenna for LW, MW, and SW and 4 FM aerials for VHF reception. The FBD frequency for U.S. vehicles is 868.4MHz







The antennas are switched by the diversity module, which is directly located on the tuner and is connected to it by an 8-pin ribbon cable.

The antennas for telephone and navigation are located in a separate shark fin antenna on the roof.

The advantages of the new E65/E66 antenna system are the following:

- Powerful AM (LMK) antenna.
- FM diversity available in the basic audio system.
- High FM diversity performance due to 4 switchable antennas: FM 1-4.
- Modular application of basic system on many system variants, e.g. radio, W, FBD.
- The antenna system (tuner) has diagnosis capability.

The antenna system is made up of the following components:

Rear Window

The rear window is made laminated safety glass (VSG) with infrared coating (IR).

The glass thickness is 4 mm. The antenna consist of leads 0.4 mm wide. The rear window is partitioned into three sections, The first part includes the AM and FM 5/FBD antennas. The second part includes the FM 1, FM 2 and FM 3 antenna. The lower half includes the FM 4 antenna.

The rear screen defroster uses the central and lower panels of the FM antenna. The heating power is approx.300 W.

Antenna Diversity Unit (FM)

The antenna diversity is installed in the left C pillar, together with the tuner. It is connected to the tuner by an 8-pin ribbon cable.

The ribbon cable is used to transmit the operating voltage and the switching signals DIAGNOSIS, CONTROL, LEVEL, AUDIO from tuner to diversity. The HF signal is transferred from diversity to the tuner.

The antenna diversity is used to define the best antenna signal and controls the changeover and the output of the antenna signal on the HF output.

Antenna Amplifier (FM)

The antenna amplifier in the RH C-pillar is associated to antennas FM 3-4 and to the FBD antenna. The antenna amplifier is linked by a coaxial cable to the antenna diversity unit.

The FM antennas are switched over by a control signal, fed via the coaxial cable.




Antenna Amplifier (AM)

The AM amplifier used for LW, MW, and SW ranges, is located in the diversity unit in the LH C-pillar.