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When operating two-way radios in the
#
vehicle, always connect them to the
low-reflection exterior aerial.
* NOTE Invalidation of the operating per‐
mit due to failure to comply with the
instructions 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 aerial positions.
#
On vehicles with a panoramic sliding sunroof, fit‐
ting an aerial to the front or rear roof area is not
permitted.
Use Technical Specification ISO/TS 21609 (Road
Vehicles – "EMCs for installation of aftermarket
radio frequency transmitting equipment") when
retrofitting two-way radios. Comply with the
legal requirements for detachable parts.
If your vehicle has fittings for two-way radio
equipment, use the power supply and aerial con‐
nectors provided in the pre-installation. Observe
the manufacturer's supplements when fitting.
Two-way radio transmission output
The maximum transmission output (PEAK) at the
base of the aerial must not exceed the values in
the following table.
Frequency band and maximum transmission
output
Frequency band
Maximum transmis‐
sion output
Short wave
3 - 54 MHz
4 m frequency band
74 - 88 MHz
2 m frequency band
144 - 174 MHz
Internal use only
Frequency band
Terrestrial Trunked
Radio (TETRA)
380 - 460 MHz
70 cm frequency
band
420 - 450 MHz
Two-way radio
(2G/3G/4G)
The following can be used in the vehicle without
100 W
restrictions:
two-way radios with a maximum transmission
R
output of up to 100 mW
30 W
RF transmitters with transmitter frequencies
R
in the 380 - 410 MHz frequency band and a
50 W
maximum transmission output of up to 2 W
(TETRA)
mobile phones (2G/3G/4G)
R
Technical data 427
Maximum transmis‐
sion output
10 W
35 W
10 W
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