1
1. MOUNTING THE UNIT
NOTICE
Do not apply paint, anti-corrosive sealant or contact spray to coating
or plastic parts of the equipment.
Those items contain organic solvents that can damage coating and plastic
parts, especially plastic connectors.
1.1 Antenna Unit
Mounting Location
• Mount the omnidirectional antenna unit high atop a mast clear of stays and the turning
diameter of a radar antenna. The ideal mounting location would be where no obstacle
appears in the fore and aft directions down to -5º and down to -15º in the port and
starboard directions. This concept is illustrated in the figure below. Shadow sector of the
antenna mast, whip antenna, etc. should be within 2 degrees at one meter from the
antenna unit.
ANTENNA UNIT
5
5
15
15
Antenna unit mounting location
• If both Inmarsat-B/F and Inmarsat-C ship earth stations are installed, separate the
Inmarsat-B/F antenna at least 8 m from the Inmarsat-C antenna.
• Separate the antenna unit from an S-band radar as follows:
HORIZONTAL LINE
Install above this line
PROHIBITED
ZONE
1.5 m
5 m
15
2 m
S-band radar
INSTALLTION
ZONE
2 m
S-band radar and installation area
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