Fastening the antenna unit to the mounting platform
WARNING
Do not open the equipment unless totally familiar with electrical circuits and service manual.
Only qualified personnel should work inside the equipment.
Wear a hard hat and safety belt when mounting the antenna unit.
Serious injury or death can result if someone falls from the radar antenna mast.
Construct a suitable service platform from which to install the antenna unit.
Serious injury or death can result if someone falls from the radar antenna mast.
Note: The antenna is made of cast aluminum, which is subject to electrolytic corrosion if the mounting platform is steel or iron. To prevent electrolytic corrosion, use the supplied seal washers and
Fix the antenna unit to the mounting location, referring to the procedure below and the illustration on the next page.
1.Referring to the antenna outline drawing, prepare a mounting platform. Drill eight fixing holes of 15 mm in diameter in the mounting platform or the deck.
•The diameter of the mast for the mounting platform must be over 250 mm.
•The thickness of the platform must be over 15 mm.
•The reinforcement rib must be installed diagonally as shown below.
Use two nuts. 
Over 15 mm
At least 250 mm in diameter, Thickness at least 6 mm.
Install the reinforcement rib diagonally. 
Ship's bow
Bottom view