GPS / telephone roof antenna, function - GF82.70-P-4111-04B

Models 129, 140, 202, 208.3, 210 with code 347 

Model 220 with code 347 or code 348 

Models 208.3, 210, 220 with code 352 

GPS antenna (A2/49a2) 

The satellite signals received are amplified in the antenna amplifier integrated in the GPS antenna (A2/49a2)  . This antenna amplifier is supplied with power via a coaxial antenna cable (phantom power supply). The amplified signals are then transmitted to the GPS control module integrated

• with code 347 or 348, in the TELE AID control module (A35/8) 
• with code 352, in the COMAND operating, display and control module (N40/3) 

via the same co-axial antenna cable.

If the vehicle is equipped with TELE AID and  COMAND the co-axial antenna cable for the GPS antenna (A2/49a2) is routed to the antenna splitter (A2/5). At both co-axial outlets of the antenna splitter the control modules (A35/8) and (A40/3) are connected.

The GPS antenna serves only for reception  of GPS signals (signals are not transmitted).

Telephone antenna (A2/49a1) 

The signals received by A2/49a1 are transmitted via a separate coaxial antenna cable.

• with code 347 or 348, to the TELE AID control module (A35/8) 
• otherwise directly to the CTEL transmitter and receiver (A35)  or to the cellular telephone (A34/6) 

Transmission is accomplished vice versa.

The GPS reception frequencies are in the GHz range, the telephone reception and transmitter frequencies are in the upper MHz range. Each antenna is connected with the corresponding receiver with a separate co-axial cable.