How To Reduce Rain Clutter - Furuno MFD12 Operator's Manual

6. Radar
Manual sea clutter adjustment
1. Press the GAIN/TX key to show the Gain-Sea-Rain adjustment window. (You can
also show the window if you put the cursor near the site of the window.)
2. Press the GAIN/TX key again to select [Sea].
3. Rotate the RotoKey to adjust the sea clutter level.
4. Push the RotoKey to validate the setting and close the window.
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How to Reduce Rain Clutter

When your vessel is in or near rain or snow, the reflections from the rain or snow ap-
pear on the screen. These reflections have the name "rain clutter." When the rain clut-
ter is strong, targets in or near the rain clutter are hidden in the clutter. Reflections from
the rain clutter are easily identified from true targets by their wool-like appearance.
The Rain control breaks the continuous display of rain or snow reflections into a ran-
dom pattern. The Rain control also helps to reduce the target clutter in good weather
in busy harbors.
When the rain clutter hides targets, adjust the Rain control (automatic or manual) to
reduce the clutter. After the rain clutter is gone, turn off the Rain control to prevent the
loss of targets.
Automatic rain clutter adjustment
1. Press the GAIN/TX key to show the Gain-Sea-Rain adjustment window. (You can
also show the window if you put the cursor near the site of the window.)
2. Press the GAIN/TX key again to select [Rain].
3. Rotate the RotoKey to adjust the rain clutter level.
4. Push the RotoKey to validate the setting and close the window.
The Rain "A" icon is green when the automatic rain is active.
Note: The Gain-Sea-Rain pop-up allows you to switch between automatic and manual
rain clutter adjustment.
1. Show the Gain-Sea-Rain adjustment window.
2. Push the right-click button to show the Gain-Sea-Rain pop-up menu.
3. Rotate the RotoKey to select [Auto Rain] then push the key to activate or deacti-
vate the Auto Rain.
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