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1. MOUNTING
1-2
• Install the antenna unit safety away from interfering high-power energy source and
other transmitting radio antenna.
• 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:
• 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 completely clear view in all di-
rections is available. Thus, you should determine the angular width and relative
bearing of any shadow sector 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 de-
viation 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 aluminium. To prevent electrolytic corrosion of
the antenna base, use the seal washers and corrosion-proof rubber mat ground the
unit with the ground wire (supplied).
• Deposits and fumes from a funnel or other exhaust vent can adversely affect the
aerial performance and hot gases may distort the radiator position.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 antenna
unit outline drawing for recommended maintenance space.
more than 20°
more
than 1 m