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86 GPSMAP
®
6000/7000 Series Owner’s Manual
Radar
When using a GMR 604 xHD, 606 xHD, 1204 xHD, or 1206 xHD radar, the last gain and clutter
settings congured for use in any radar mode are applied to the Radar Overlay automatically. For
example, if the gain for the Harbor mode is set to 50%, the gain for the Radar Overlay is set to 50%
automatically. Later, if the gain for the Offshore mode is set to 40%, the gain for the Radar Overlay
is set to 40% automatically.
Default Gain and Clutter Settings
Setting Default Value Instructions
Gain Auto See “Automatically Adjusting Gain on the Radar Screen”
(page 86).
Sea Clutter Calm, Medium, or Rough See “Restoring the Default Sea Clutter Setting” (page 88).
Rain Clutter Off See “Restoring the Default Rain Clutter Setting” (page 89).
FTC Off See “Restoring the Default FTC Setting” (page 89).
Crosstalk On See Adjusting Crosstalk Clutter on the Radar Screen” (page 91).
Automatically Adjusting Gain on the Radar Screen
Auto is the default value for the gain setting. The automatic gain setting for each radar mode is
optimized for that mode, and may differ from the automatic gain setting used for another mode.
NOTE: Depending upon the radar in use, the gain setting congured for use in one radar mode may
or may not be applied to other radar modes or to the Radar Overlay (page 85).
1. From the Home screen, select
Radar.
2. Select
Cruising, Harbor, Offshore, Dual Range or Sentry mode.
3. Complete an action:
Select Menu > Gain > Auto for Cruising, Harbor, Offshore, or Sentry mode.
Congure the setting for the short-range screen in Dual Range mode. Select > Menu >
Gain > Auto for the GPSMAP 6000 series. Select Left > Gain > Auto for the GPSMAP 7000
series.
Congure the setting for the long-range screen in Dual Range mode. Select > Menu >
Gain > Auto for the GPSMAP 6000 series. Select Right > Gain > Auto for the GPSMAP
7000 series.
The chartplotter sets the gain automatically once, based on average conditions, the range
of the radar signal, and the selected radar mode. The chartplotter does not readjust the gain
automatically in response to changing conditions.
Manually Adjusting Gain on the Radar Screen
For optimal radar performance that accounts for actual conditions, you can manually adjust the gain.
NOTE: Depending upon the radar in use, the gain setting congured for use in one radar mode may
or may not be applied to other radar modes or to the Radar Overlay (page 85).
1. From the Home screen, select
Radar.
2. Select
Cruising, Harbor, Offshore, Dual Range or Sentry mode.
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