Radar (Optional)
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The auto gain preset specifies a default gain setting for use when radar mode is set to
automatic (the factory default setting).
You shouldn’t need to adjust the auto gain preset frequently—periodic adjustment is
typically all that is required. For example, suppose the auto gain preset is 8%. If you
consistently notice weak returns through different ranges, you might increase it to 10%.
Note!
Your preset applies to all ranges, so you may want to preview a few ranges before
making adjustments.
Manual Sea Clutter Preset
The manual sea clutter preset does two things: it specifies a default sea clutter setting
for use when radar mode is set to manual or smart, and it has the additional effect of re-
calibrating the sea clutter scale.
For example, say you have set sea clutter to 24%. However, in order to achieve a clear
display of radar returns, you find yourself raising the sea clutter to a much higher setting,
say 75%. Whenever you find that your sea clutter setting is always hovering near an
extreme end of the scale - either high (as in this case), or low - you should probably
adjust your preset more towards middle range. In this example, you might increase the
preset sea clutter to 30%. Returning to the radar display, you’ll find that you still need to
raise the sea clutter as conditions merit, but that now you might only need to raise it to
50% (instead of the more extreme 75%) to achieve the same display quality.
Note!
Your preset applies to all ranges, so you may want to preview a few ranges before
making adjustments.
Auto Sea Clutter
When Radar Mode is set to Automatic and the Radar Range is set to over 1 mile,
Maestro Navigator defaults to the auto sea clutter setting but can be adjusted later as
necessary.
This sea clutter figure is designed to partially suppress nearby targets which at longer
(>1mile) ranges are no longer the intended focus of the radar display. A separate auto
sea clutter garbor setting is used to attenuate close targets whenever range is less than
one mile.
Auto Sea Clutter Harbor
When Radar Mode is set to Automatic and the Radar Range is set below 1 mile,
Maestro Navigator defaults to the Auto Sea Clutter Harbor setting. This is done because
a shorter range typically indicates a greater need to focus on nearby surroundings. In a
congested area like a harbor, the use of a specialized harbor sea clutter setting ensures
that nearby targets are not attenuated.
At ranges over 1 mile, Maestro Navigator will automatically switch to the standard auto
sea clutter harbor setting. A longer range is used when traveling through more open
water. Since nearby targets are no longer the sole focus (as when traveling in a harbor
or other congested area), such targets are partially suppressed in order not to dominate
the radar display.
Summary of Contents for Maestro
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