Aerial tuner

• E60, E61, E63, E64

The single-tuner radio is fitted as standard in the M-ASK. The tuner receives the radio frequencies FM (VHF) and AM (MW and LW). The radio waves from the radio station are received by the aerials in the rear window. The received high-frequency signal is led by the aerial diversity (on the rear window) via a coaxial line to the aerial input on the single-tuner radio.

• E70, E87, E90, E91, E92, E93
• Optional on: E60, E61, E63, E64

While tuner 1 receives the required radio station, tuner 2 works in the background. Tuner 2 searches the station frequencies for additional signals. If a radio station is transmitting a stronger signal on a different frequency, the radio will automatically switch to this alternative frequency.

Tuner 2 receives additional information from the Traffic Message Channel (TMC). The TMC information is used by the navigation system (option 606) to avoid areas of traffic congestion.

Both aerial tuners receive information from the Radio Data System (RDS) which is emitted with the signal from the FM station.

If the radio is tuned to an AM station, RDS traffic information announcements can still be received from an FM station.

If a traffic information announcement is received, the AM station is hidden and the message is outputted over the loudspeakers. All the radio stations and traffic information stations that can be received are contained in a list of RDS stations.