Iridium Pilot Quick Start Manual page 4

STEP 1: LOCATION FOR ODU
Conduct a visual survey to determine the best location for the ODU. The ODU
needs clear exposure, in all directions, to the sky to avoid interference.
Minimize
obstructions
Keep clear of sources of interference, such as RADAR systems, high power transmitters,
or other satellite communication terminals.
Minimum distance from S-band & X-band RADARs
S-band (-10 cm/ 3 GHz) radars
Radar Power Min distance at 15˚
vertical separation
0-10kW 0.4 m (1.3 ft.)
30kW 1.0 m (3.3 ft.)
50kW 2.0 m (6.6 ft.)
Unobstructed view of sky all directions
8.0 m (26.2 ft.)
Unrestricted area for obstructions
2.0 m (6.6 ft.)
Min distance at 60˚
vertical separation
0.4 m (1.3 ft.)
0.5 m (1.6 ft.)
1.0 m (3.3 ft.)
8.0 m (26.2 ft.)
No metallic or concrete
obstructions in
grey shaded area
Offset Distances from other Communications &
Navigation Equipment ODU Location Priorities
X-band (~3 cm/ 1 GHz) and C-band (4-8 GHz) radars
Radar Power Min distance at 15˚
vertical separation
0-10kW 0.8 m (2.6 ft.)
30kW 2.4 m (7.9 ft.)
50kW 4.0 m (13.1 ft.)
Minimize
obstructions
Min distance at 60˚
vertical separation
0.4 m (1.3 ft.)
1.2 m (3.9 ft.)
2.0 m (6.6 ft.)