10
Radar antenna height implications
< 2L
< 500 m
L
Antenna elevation table
The antenna elevation from the water surface determines the distance the radar beam travels before hitting the water
surface.
Height (m)Height (m) 1 2 3 4 5 7.5 10 15 20 25 30 40 50
Distance (m) 4.7 9.4 14.1 18.8 23.5 35.3 47.0 70.6 94.1 117.6 141.1 188.2 235.2
Elevation impact
The radar antenna should be installed in an elevated position to permit maximum target visibility, but not higher than
necessary as sea clutter increases and short range performance is compromised with increased installation height. On
smaller vessels excessive height may also have a negative impact on vessel stability.
Mounting guidelines
• Choose a location that will not expose the unit to conditions that exceed the specications.
• The mounting surface needs to be structurally strong with as little vibration as possible.
• Ensure that any holes cut are in a safe position and will not weaken the boat’s structure.
• Before cutting a hole in a panel, make sure there are no hidden electrical wires or other parts behind the panel.
• Check that it is possible to route cables to the intended mounting location. Leave sucient clearance to connect all
relevant cables.
• Make drip and service loops for cables.
⚠
WARNING: Inadequate ventilation and subsequent overheating of the unit may cause unreliable operation
and reduced service life. Exposing the unit to conditions that exceed the specications could invalidate your
warranty.
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