Mercedes-Benz ML320. Service manual - part 245

 

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Mercedes-Benz ML320. Service manual - part 245

 

 

Fig. 68: Identifying Rear Window Antennas Design 

The individual antennas are attached to the inner side of the rear window. 

The AM antenna in some cases is part of the heating elements of the rear window defroster. The AM signals 
are decoupled by the radio antenna splitter (A2/5) . 

All the antennas are matched in terms of their length and shape to the particular frequency band which they 
receive. 

REAR WINDOW ANTENNAS, FUNCTION - GF82.62-P-3106-04GH 

Model 163  

Function:  

The radio signals are received by the rear window antenna (A2/32) (AM, FM ). The high-frequency 
oscillations (RF) of the electrical field in the air are converted into an electrical alternating voltage . 

A standing electrical wave is formed in the antenna as a result of the correct matching of the length of the 
antenna to the wavelength of the frequency to be received. 

In this case, the amplitude of the RF signal has a constant value at a random point of the antenna. The RF 
signal level
 is at the maximum at the connection point. A variation of the length of the antenna from its 
optimum length results in a reduction in the RF signal level at the antenna output. If the variation is too large, 
no further signal is received (for example if the antennas are incorrectly connected to the antenna amplifier). 

REAR WINDOW ANTENNA, LOCATION/PURPOSE /DESIGN/FUNCTION - GF82.62-P-3106GH 

MODEL 163  

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

  

me 

 

Fig. 69: Identifying Rear Window Antennas Location 

FM/AM ANTENNA AMPLIFIER, LOCATION - GF82.62-P-4101-01GH 

Model 163  

Location:  

the FM/AM amplifier (A2/18) is located in the tailgate.

 

Rear window antennas, 
location

The antennas are located 
in the rear window

 

 

Rear window antennas, 
purpose

Reception of the 
following radio signals: 

AM, FM (WB only 

 )  

 

 

Rear window antennas, 
design

 

GF82.62-P-3106-03GH

 

Rear window antennas, 
function

 

GF82.62-P-3106-04GH

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

  

me 

 

Fig. 70: Identifying FM/AM Antenna Amplifier Location 

FM/AM ANTENNA AMPLIFIER, FUNCTION - GF82.62-P-4101-04GH 

The radio signals are received by the rear window antenna (A2/32) and passed to the signal input of the 
FM/AM amplifier (A2/18) . This amplifies the signals and passes them over a coaxial cable to the receiver of 
the radio set of the audio unit. 

FM/AM ANTENNA AMPLIFIER, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.62-P-4101A 

MODEL 163, 168, 170, 208.4, 210.2  

MODEL 208.3, 210 (except, 210.2) except CODE (352a) COMAND operating and display system  

 

FM/AM antenna 
amplifier, location

Model 168

GF82.62-P-4101-01A

 

 

Model 170

GF82.62-P-4101-01B

 

 

Model 208

GF82.62-P-4101-01D

 

 

Model 210 (except 210.2)

GF82.62-P-4101-01E

 

 

Model 210.2

GF82.62-P-4101-01C

 

 

Model 163

GF82.62-P-4101-
01GH

 

FM/AM antenna 
amplifier, purpose

Amplification of the FM/AM 
radio signals

 

 

FM/AM antenna 

Coaxial connection for 

 

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

  

me 

 

TELEPHONE ANTENNA, LOCATION - GF82.62-P-4105-01E 

Fig. 71: Identifying Telephone Antenna 

TELEPHONE ANTENNA, LOCATION/PURPOSE - GF82.62-P-4105GH 

MODEL 163 with CODE (853) MB standard cellular telephone with CODE (854) MB portable cellular 
telephone
  

amplifier, design

signal outputs  

Connections for power 
supply and signal 
inputs/outputs  

 

 If the voltage supply of the 

FM/AM amplifier (A2/18) 
fails, the AM signal path is 
interrupted. FM reception is 
possible with reduced reception 
quality.

 

FM/AM antenna 
amplifier, function

 

GF82.62-P-4101-04A

 

FM/AM antenna 
amplifier, function

Model 163

GF82.62-P-4101-
04GH

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

  

me 

 

 

 

 

 

 

 

 

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