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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. Unobstructed view of sky all directions 8.0 m (26.2 ft.) Minimize obstructions 8.0 m (26.2 ft.) Minimize obstructions Unrestricted area for obstructions 2.0 m (6.6 ft.) No metallic or concrete obstructions in grey shaded area 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 Offset Distances from other Communications & Navigation Equipment ODU Location Priorities X-band (~3 cm/ 1 GHz) and C-band (4-8 GHz) radars S-band (-10 cm/ 3 GHz) radars Radar Power Min distance at 15˚ vertical separation Min distance at 60˚ vertical separation Radar Power Min distance at 15˚ vertical separation Min distance at 60˚ vertical separation 0-10kW 30kW 0.4 m (1.3 ft.) 1.0 m (3.3 ft.) 0.4 m (1.3 ft.) 0.5 m (1.6 ft.) 0-10kW 30kW 0.8 m (2.6 ft.) 2.4 m (7.9 ft.) 0.4 m (1.3 ft.) 1.2 m (3.9 ft.) 50kW 2.0 m (6.6 ft.) 1.0 m (3.3 ft.) 50kW 4.0 m (13.1 ft.) 2.0 m (6.6 ft.)
