Radio mode, function (up to 31.5.05 with CODE (494) USA version) - GF82.60-P-2001SKV

Model 171.4 up to 31.5.05 with CODE (494) USA version 

Radio reception, function 

The FM/AM amplifier (A2/18) receives the frequency-modulated and the amplitude-modulated radio frequency signals, filters the frequencies of the radio frequency bands and amplifies them. Part of the frequency-modulated radio frequency signals is amplified by the left antenna amplifier module (A2/64). Subsequently, all amplified radio frequency signals are transmitted via a screened line to the radio receiver in the radio (A2).

The radio receiver demodulates the high frequency signals, in other words it separates the useful information (audible frequencies) from the carrier signal (inaudible). The demodulated audio signals are amplified and converted to sound signals by the vehicle speakers.

Different ways of tuning in stations:

• Tuning using station preset
• Tuning by program type list
• Tuning via frequency list
• Tuning by station search
• Tuning by station search on multifunction steering wheel (MFL)
• Tuning by "Autostore" memory
• Tuning by "Scan" search (the stations of a waveband are played for t = 8 s)
• Manual tuning
• Tuning using station preset
• Tuning by manual frequency input (via the 12-button control panel of the radio (A2))

Satellite digital audio radio (satellite radio) (SDAR) 

The SDAR control unit (N87/5) is planned as a dealer option in US vehicles, in other words the entire wiring is present in the vehicle. In order to equip the vehicle correspondingly, the SDAR control unit (N87/5) and the SDAR antenna (A2/82) have to be installed and connected. Then, the function can be called up on the radio (A2) via the man-machine interface (MMI).

It is possible to receive digital satellite stations. The prerequisite is that this has been enabled by a network provider. If the system is enabled, between 100 and 224 additional stations can be received.