8 | Introduction to the Navico radar system
WARNING: Microwave Radiation Hazard
The microwave energy radiated by a radar antenna is harmful to humans, especially
to the eyes. NEVER look directly into an open waveguide or into the path of radiation
from an enclosed antenna. Radar and other radio frequency radiation can upset
cardiac pacemakers. If someone with a cardiac pacemaker suspects abnormal
operation, immediately turn off the radar equipment and move the person away from
the antenna. Turn off the radar whenever it is necessary to work on the antenna unit
or other equipment in the beam of the radar.
Note: Most countries accept that RF power density levels below 100 W/m² cause no significant
RF hazard.
Scanner
Model
Vertical beam
angle of scanner
(degrees)
Minimum safe distance
(100 Watts per m² average
power density) Note 1
Minimum safe distance
(10 Watts per m² average power
density) Note 2
6 kW 20 1.1 m (3.6 ft) 3.5 m (11.5 ft)
10 kW 20 2.9 m (9.5 ft) 9.0 m (30 ft)
25 kW 20 5.5 m (18 ft) 17.4 m (57 ft)
Note: Limits apply to exposure within the vertical beam angle.
Note 1: Peak occupational exposure limit pursuant to IEC 60936 Clause 3.27 and IEC 62252
Clause 4.32
Note 2: General public exposure limit pursuant to IEC 60936 Clause 3.27 and IEC 62252 Clause
4.32
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