Chapter 2: Installing the system
TT-98-129218-A
Placing the antenna
5
Placing the antenna
Obstructions
The antenna rotates 360° and down to -60° in pitch and roll, to allow for continuous pointing even
in heavy sea conditions. Any obstructions within this volume can cause signal degradation.
The amount of degradation depends on the size of the obstruction and the distance from the
antenna. As a rule of thumb any obstruction that subtends an angle of less than 3° at the antenna
has limited effect. The table below gives a guideline for obstruction sizes that will cause limited
degradation.
Radiation hazard
The SAILOR 150 FleetBroadband antenna radiates 16.1 dBW EIRP. This translates to a minimum
safety distance of 0.6 m from the antenna while it is transmitting, based on a radiation level of
10 mW/cm
2
.
Distance of Obstruction
Size of
Obstruction
3 m
16 cm
5 m
26 cm
10 m
52 cm
20 m
104 cm
MICROWAVE RADIATION
No personnel within safety distance
60
Safety distance:
(0.2 m, 100 W/m
2
)
0.6 m, 10 W/m
2
