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88 GPSMAP
®
6000/7000 Series Owner’s Manual
Radar
3. Complete an action:
Select Menu > Gain for Cruising, Harbor, Offshore, or Sentry mode.
Congure the setting for the short-range screen in Dual Range mode. Select > Menu >
Gain for the GPSMAP 6000 series. Select Left > Gain for the GPSMAP 7000 series.
Congure the setting for the long-range screen in Dual Range mode. Select > Menu >
Gain for the GPSMAP 6000 series. Select Right > Gain for the GPSMAP 7000 series.
4. Select
Down to lower the gain until the semi-circular, streaked pattern disappears from the Radar
screen.
Reducing the gain to eliminate side-lobe interference may cause smaller or more-distant targets
to blink or disappear from the Radar screen.
Restoring the Default Sea Clutter Setting
NOTE: Depending upon the radar in use, the sea clutter setting congured 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 > Noise Rejection > Sea Clutter for Cruising, Harbor, Offshore, or Sentry
mode.
Congure the setting for the short-range screen in Dual Range mode. Select > Menu >
Noise Rejection > Sea Clutter for the GPSMAP 6000 series. Select Left > Noise Rejection
> Sea Clutter for the GPSMAP 7000 series.
Congure the setting for the long-range screen in Dual Range mode. Select > Menu >
Noise Rejection > Sea Clutter for the GPSMAP 6000 series. Select Right > Noise Rejection
> Sea Clutter for the GPSMAP 7000 series.
4. Select a setting that reects present sea conditions:
Rough, Medium, or Calm.
Adjusting Sea Clutter on the Radar Screen
You can adjust the appearance of clutter caused by choppy sea conditions. The sea clutter setting
effects the appearance of nearby clutter and targets more than it effects the appearance of distant
clutter and targets. A higher sea clutter setting reduces the appearance of clutter caused by nearby
waves, but it can also reduce or eliminate the appearance of nearby targets.
NOTE: Depending upon the radar in use, the sea clutter setting congured 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.