1. MOUNTING
•Install the antenna unit safely away from interfering
•Keep the lower edge of the antenna unit above the safety rail by 500 mm or more.
•Two antenna units should be mounted as below:
more than 20
more than 1 m
•No funnel, mast or derrick should be within the vertical beamwidth of the antenna unit in the bow direction, especially zero degrees ±5°, to prevent blind sectors and false echoes on the radar picture.
•It is rarely possible to place the antenna unit where a completely clear view in all directions is available. Thus, you should determine the angular width and relative bearing of any shadow sectors for their influence on the radar at the first opportunity after fitting.
•Locate a direction finder antenna clear of the antenna unit to prevent interference to the direction finder. A separation of more than two meters is recommended.
•A magnetic compass will be affected if the antenna unit is placed too close to the magnetic compass. Observe the compass safe distances on page ii to prevent deviation of the magnetic compass.
•Do not paint the radiator aperture, to ensure proper emission of the radar waves.
•The antenna base is made of cast aluminum. To prevent electrolytic corrosion of the antenna base, use the seal washers and
•Deposits and fumes from a funnel or other exhaust vent can adversely affect the aerial performance and hot gases may distort the radiator portion. The antenna unit must not be mounted where the temperature is more than 70°C.
•Leave sufficient space around the unit for maintenance and servicing. See the antenna unit outline drawing for recommended maintenance space.
