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3. INSTALLATION
3.1 Antenna Unit Installation
Mounting considerations
When selecting a mounting location for the
antenna unit keep in mind the following
points:
• Install the antenna unit on the hardtop,
radar arch or on a mast on an appropriate
platform. (For sailboats, a mounting
bracket is optionally available.) It should
be placed where there is a good all-round
view with, as far as possible, no part of
the ship’s superstructure or rigging
intercepting the scanning beam. Any
obstruction will cause shadow and blind
sectors.
• In order to minimize the chance of picking
up electrical interference, avoid where
possible routing the antenna cable near
other electrical equipment onboard. Also,
avoid running the cable in parallel with
power cables.
• Separate the antenna unit from a
magnetic compass by the distances noted
below to prevent interference to the
magnetic compass:
Standard compass: 1.25 m
Steering compass: 0.95 m
Mounting on a platform
1. Remove the mounting hardware at the
bottom of the antenna unit: four each of
hexagon head bolts (M10 x 20), spring
washers and flat washers (4 pcs.). Save
the mounting hardware to use it to fix the
antenna base to the mounting platform.
Flat washer
Spring washer
Hexagon head bolt
(M10 x 20)
Screws
(one screw on other side)
Flat washer
Antenna unit, showing location of
mounting hardware
2. Construct a wood, steel or aluminum
platform on which to fix the antenna. (The
thickness of the platform depends on the
hex bolts to be used to fix the antenna to
the platform. See the illustration on the
next page for thickness). Next, position
the antenna unit on the platform so the
cable entrance faces the stern direction.
160
205
160
235
Fixing hole
(φ11 mm)
BOW
Dimensions in
millimeters
Dimensions of antenna platform
Note 1: If corrosive material is used for
the platform, be sure to take appropriate
anti-corrosion measures.
Note 2: When drilling holes in the platform,
be sure they are parallel with the fore and
aft line.