1. INSTALLATION
1-2
Installing the antenna below superstructures
Where the antenna is installed below superstructures on the vessel, shadows and
multipath problems may occur on at least one heading, and possibly more. To avoid
these problems where possible, follow the guidelines in this section.
Note: If the antenna is installed below any superstructure, the installation must be
done over a two-day period, following the procedure in the service manual.
At least 12 hours are required to capture tracking data to measure multipath indexes
and locate areas of shading.
• The horizontal separation between the antenna and masts must be as shown in the
table below and the figure on the following page:
Mast diameter Minimum separation distance
10 cm 1.5 m
30 cm 3 m
Mast
Radar Antenna
Bridge
SC-series Antenna
Horizontal
separation
distance
Mast, etc.Mast, etc.
Mast, etc.Mast, etc.
Side view
Top view
SC-703
Antenna unit
SC-1303
Antenna unit
SC-703
Antenna unit
OR
SC-1303
Antenna unit
Less than 10°
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