1-4
1.1.3 Fastening the antenna unit to the mounting platform
The antenna unit may be assembled before hoisting it to the mounting platform. However, do
not lift the antenna unit by the radiator. Always hold the unit by its housing. When using a crane
or hoist, lift the unit by the hoist rings which should be fastened to the bolt fixing covers of the
antenna housing.
CAUTION
DO NOT hoist the antenna unit by the
radiator; hoist it by the hoist rings. (Be sure to
remove rings after hoisting the antenna unit.)
Hoist
ring
NO!
1. Construct a suitable mounting platform referring to the outline drawing at the back of the
manual.
2. Drill four mounting holes of 15 mm diameter and one cable entry hole of about 50 mm
diameter in the mounting platform.
3. Lay the rubber mat (supplied) on the mounting platform.
4. Place the antenna unit on the rubber mat orienting the unit so the bow mark on its base is
facing the ship's bow.
Ground terminal
Rubber mat
Bow mark
Figure 1-3 Antenna unit, front view
5. Fasten the antenna unit to the mounting platform with four sets of M12X60 hex bolts, nuts,
flat washers and seal washers (supplied).
6. Using hex bolt (M6X25), nut (M6) and flat washer (M6), establish the ground system on the
mounting platform as shown in Figure 1-4. The location should be within 370 mm of the
ground terminal on the antenna unit. Connect the ground wire (RW-4747, 370 mm, supplied)
between the grounding point and ground terminal on the antenna unit. Coat the entire
ground system with silicone sealant (supplied).
