Mercedes-Benz S-Class 2020 Owner's Manual page 413

410 Technical data
When operating two-way radios in the
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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.
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Observe the maximum permissible out‐
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put power in these frequency bands.
Only use approved aerial positions.
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1 Rear roof area
On vehicles with a panoramic sliding sunroof, fit‐
ting an aerial to the 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‐
2 m frequency band
144 - 174 MHz
Terrestrial Trunked
Radio (TETRA)
380 - 460 MHz
70 cm frequency
band
430 - 470 MHz
sion output
50 W
10 W
35 W