Installation Manual

1.6 Setting the radiation plane

The digital radar unit should be mounted so that the array rotates

parallel to the waterline. The radar beam is approximately 25° wide

in the vertical direction, providing good target detection during the

vessel’s pitching and rolling.

Planing hull vessels, and some displacement hull vessels, adopt a

higher bow angle when the vessels is at its cruising speed. In many

cases this substantially alters and raises the radar’s main radiation

plane, and can cause poor detection of nearby targets. It may be

helpful to lower the radar beam back towards the parallel, by

shimming the rear of the digital radar, so that the beam points

slightly downwards with respect to the waterline when the vessel is

at rest.

12.5°

Waterline

Ideal Radiation Plane

D10488-1

Wedge or

washers

Using shims to lower the main beam

Forward

D10489-1