2019-2024 Mercedes G Class SUV Technical data -> Vehicle electronics User Manual
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Technical data -> Vehicle electronics for Your Mercedes G Class SUV Fourth Generation (2019-2024)

Notes on technical data
*
NOTE Mercedes-AMG vehicles
#
Observe the notes in the Supplement.
You could otherwise fail to recognize
dangers.
The data stated only applies to vehicles with
standard equipment. You can obtain further infor-
mation from an authorized Mercedes-Benz Cen-
ter.
Vehicle electronics
Two-way radios
▌Notes on installing two-way radios
&
WARNING Risk of accident due to
improper work on two-way radios
If two-way radios are manipulated or retrot-
ted incorrectly, the electromagnetic radiation
from the two-way radios can interfere with the
vehicle electronics and jeopardize the operat-
ing safety of the vehicle.
#
You should have all work on electrical
and electronic components carried out
at a qualied specialist workshop.
&
WARNING Risk of accident due to
improper operation of two-way radios
If you use two-way radios in the vehicle
improperly, their electromagnetic radiation
can disrupt the vehicle's electronics. This is
the case in the following situations, in particu-
lar:
R
The two-way radio is not connected to an
exterior antenna.
R
The exterior antenna is installed incor-
rectly or is not a low-reection antenna.
This could jeopardize the operating safety of
the vehicle.
#
Have the low-reection exterior antenna
installed at a qualied specialist work-
shop.
#
When operating two-way radios in the
vehicle, always connect them to the low-
reection exterior antenna.
*
NOTE Invalidation of the operating permit
due to failure to comply with the instruc-
tions for installation and use
The operating permit may be invalidated if the
instructions for installation and use of two-way
radios are not observed.
#
Only use approved frequency bands.
#
Observe the maximum permissible out-
put power in these frequency bands.
#
Only use approved antenna positions.
376
Technical data
1
Front roof area
2
Rear roof area
Use Technical Specication ISO/TS 21609 (Road
Vehicles – "EMC guidelines for installation of
aermarket radio frequency transmitting equip-
ment") when retrotting two-way radios. Comply
with the legal requirements for detachable parts.
If your vehicle has a pre-installation for two-way
radio equipment, use the power supply and
antenna connectors provided in the pre-installa-
tion. Observe the manufacturer's supplements
when installing.
▌Two-way radio transmission output
The maximum transmission output (PEAK) at the
base of the antenna must not exceed the values in
the following table.
Frequency band and maximum transmission out-
put
Frequency band Maximum transmis-
sion output
Short wave
3 - 54 MHz
100 W
4‑m‑ frequency band
74 - 88 MHz
30 W
2‑m‑ frequency band
144 - 174 MHz
50 W
Terrestrial Trunked
Radio (TETRA)
380 - 460 MHz
10 W
Frequency band Maximum transmis-
sion output
70‑cm‑ frequency
band
420 - 450 MHz
35 W
Two-way radio
(2G/3G/4G)
10 W
The following can be used in the vehicle without
restrictions:
R
two-way radios with a maximum transmission
output of up to 100 mW
R
RF transmitters with transmitter frequencies in
the 380 - 410 MHz frequency band and a
maximum transmission output of up to 2 W
(TETRA)
R
mobile phones (2G/3G/4G)
There are no restrictions regarding the position of
the antenna on the outside of the vehicle for the
following frequency bands:
R
Terrestrial Trunked Radio (TETRA)
R
70‑cm‑ frequency band
Technical data
377

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