9
Do not install the HALO 5000 radar on the same horizontal beam plane as any other radar. Radar antennas in close
proximity should have a minimum vertical separation angle of 45° and a minimum vertical separation of 2 m (6 ft).
2 m (6 ft)
2 m (6 ft)
1
1
2
3
1 HALO 5000 radar
2 Conventional pulse radar
3 HALO 20, 20+ or 24 dome radar
¼ Note: Possible interference can be reduced using the radar’s sector blanking.
Other RF Sources
The radar antenna should be installed at a safe distance from interfering high-power energy sources and other
transmitting and receiving radio antennas.
Sensitive equipment
Some electronics such as GPS and electronic heading sensors may be particularly sensitive to radar emissions. Follow the
manufacturer’s guide on suitable separation distance. Avoid having such equipment directly in the beam of the radar.
Obstructions and blind sectors
Railings
The underside of the radar antenna should be a minimum of 50 cm above a safety rail.
Swing diameter
Ensure all obstructions are clear of the rotation of the antenna. To avoid the antenna coming in contact with other installed
objects while it is rotating, ensure that there is at least 200 mm between the swing circle (turning radius) and the other
installed objects.
Blind sectors
Blind sectors should be kept to a minimum, and they should not occur in an area of the horizon from right ahead to 22.5°
abaft the beam to either side. Any two blind sectors separated by 3° or less should be treated as one combined blind
sector. Individual blind sectors of more that 5°, or a total of blind sectors more than 20° should not occur in the remaining
area abaft the aforementioned area. For radar installations with two radar systems, where possible, the antennas should be
placed in such a way as to minimize blind sectors.
Performance monitor
The radar should be installed in an orientation that ensures no performance monitor antenna obstructions. The radar
system will present a warning if sector blanking is set within the 30° area of the performance monitor.
Distance to water surface
For all radar systems, where practical, a line of sight from the radar antenna to the bow of the ship should reach the surface
of the sea at no more than 500 m or twice the ship length, depending on which value is smaller. This goes for all load and
trim conditions.
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