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Page 40 Radar Operation Manual
6.9 What is SEA clutter (STC), and how should it be used?
It is used to reduce the sensitivity and thus the clutter in the range closer to the Radar.
Operate the STC as to reduce the echoes coming from the closer ranges to an acceptable
range.
6.10 What is RAIN clutter (FTC), and how should it be used?
It is used to reduce the echoes coming from large objects that can hide other small objects.
It is also called the rain control since it is capable to reduce the effects of the rain on the
display.
6.11 What is the MBS (Main Bang Suppression)?
It is used to suppress the stronger echoes caused by Radar transmission in the receiver.
It is like the Sea Clutter but its operates in a shorter range.
6.12 Why do I need a Heading Sensor and a GPS to use all Radar functionalities?
Because the Radar needs to know the current position of the boat and its current heading.
6.13 I can't turn Chart Overlay On, why?
To turn Chart Overlay On you must have a compass heading sensor connected to the Chart
Plotter. If the Chart Plotter doesn't detect such devices it will automatically disable the Chart
Overlay option.
6.14 I can't set the North Up or Course Up navigation mode, why?
To turn On the North Up or Course Up navigation modes you must have a compass heading
sensor connected to the Chart Plotter. If the Chart Plotter doesn't detect such devices it will
automatically disable such option.
6.15 I can't set up the True Motion mode, why?
To turn On the True Motion mode you must have a heading sensor connected to the Chart
Plotter. If the Chart Plotter doesn't detect such devices it will automatically disable such
option.
6.16 What are the functions that require a GPS fix or a Compass Heading Sensor?
Function Heading GPS Fix
North Up Radar orientation Y N
Track Up Radar orientation Y N
True Motion mode Y Y
Chart Overlay Y Y
Radar/Chart Synchronization Y Y
Cursor Echo Y Y
Head Up Mode N N
Relative Motion mode N N
6.17 Is a gyrocompass or a flux gate compass better?
The gyrocompass is a better choice because it is faster but it is much more expensive. The
flux gate compass is slower but it is much cheaper. Using a fluxgate you have to expect to
see delays in the rotation of the chart when in Chart Overlay mode.