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3. INSTALLATION
3.1 Antenna Unit Installation
Mounting considerations
When choosing 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: 0.85 m
Mounting on a platform
1. Remove mounting hardware at the bottom
of the antenna unit; four each of hex bolts
(M10X20), spring washers and flat
washers. Save mounting hardware to use
it to fix the antenna unit to the mounting
platform later on.
Flat washer
Spring washer
Hex bolt (M10 x 20)
Bow
Stern
Cable gland
Antenna unit, showing location of
mounting hardware
2. Construct a platform (wood, steel, or
aluminum) of 5-10 mm in thickness
referring to the outline drawing at back of
this manual. Fasten the platform to the
mounting location. Next, position the
antenna unit so the cable gland faces
toward boat’s stern.
Note 1: If corrosive material is used for
the platform, take appropriate
anticorrosive measures to prevent
corrosion.
Note 2: When drilling holes in the platform,
be sure they are parallel with the fore and
aft line.
3. Using the hex bolts, flat washers and
spring washers removed at step 1, fasten
the antenna unit to the platform. The
torque should be between 19.6-24.5
N/
//
/m.
Note: Longer hex bolts (M10 x 25) are
supplied with the installation materials.
Use them instead of the hex bolts
removed earlier if the thickness of the
mounting platform is 5-10 mm.