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1. MOUNTING
1.1 Antenna Unit
1.1.1 Mounting location
Refer to IMO resolutions A663(16) and A.807(19), as amended.
• Mount the omnidirectional antenna unit high atop a mast clear of stays and the turn-
ing diameter of a radar antenna. The ideal mounting location would be where no ob-
stacle appears in the fore and aft directions down to -5° and down to 15° in the port
and starboard directions. The concept is illustrated in the figure below. Shadow sec-
tor of the antenna mast, whip antenna, etc. should be within two degrees at one
meter from the antenna unit.
• When two FELCOMs are installed, the horizontal separation shall be at least 1.5 m
and the vertical separation, 1 m or more.
• If Inmarsat ship earth stations other than C are installed, separate the Inmarsat an-
tenna at least 8 m from the Inmarsat-C antenna.
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.
ANTENNA UNIT
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15
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