1. MOUNTING
NOTICE
Do not apply paint,
Those items contain organic solvents that can damage coating and plastic parts, especially plastic connectors.
1.1Antenna Unit
Mounting considerations
•The antenna unit is generally installed either on top of the wheelhouse, on the radar mast, or on a suitable platform. Locate the antenna unit in an elevated position to permit maximum target visibility.
•A line of sight from the antenna unit to the bow of the ship should hit the surface of the sea in not more than 500 m or twice the ship’s length, depending which value is smaller, for all load and trim conditions.
less than 500 m or twice the ship’s length
•Mount the antenna unit so that any blind sectors caused by objects (mast, etc.) are kept to a minimum. No blind sector should exist in arc of the horizon from right ahead to 22.5° aft of the beam to either side (see Figure 1 below). Also, individual blind sectors of more than 5°, or the total arc of both blind sectors of more than 20°, should not occur in the remaining arc (Figure 2). Note that any two blind sectors separated by 3° or less are regarded as one sector.
270 | 90 |
|
|
| a, b, c: less than 5 respectively |
22.5 | 22.5 | a+b+c+... : less than 20 |
| ||
|
| less than 3 |
Figure 1 |
| Figure 2 |
