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1
Front roof area
2
Rear roof area
Use Technical Specification ISO/TS 21609 (Road
Vehicles – "EMC guidelines for installation of
aftermarket radio frequency transmitting equip-
ment") when retrofitting 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
100 W
3 - 54 MHz
4‑m‑ frequency band
30 W
74 - 88 MHz
2‑m‑ frequency band
50 W
144 - 174 MHz
Terrestrial Trunked
10 W
Radio (TETRA)
380 - 460 MHz
Technical data 377
Frequency band
Maximum transmis-
sion output
70‑cm‑ frequency
35 W
band
420 - 450 MHz
Two-way radio
10 W
(2G/3G/4G)
The following can be used in the vehicle without
restrictions:
two-way radios with a maximum transmission
R
output of up to 100 mW
RF transmitters with transmitter frequencies in
R
the 380 - 410 MHz frequency band and a
maximum transmission output of up to 2 W
(TETRA)
mobile phones (2G/3G/4G)
R
There are no restrictions regarding the position of
the antenna on the outside of the vehicle for the
following frequency bands:
Terrestrial Trunked Radio (TETRA)
R
70‑cm‑ frequency band
R
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