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compromised, the Radar overlay may not align perfectly with the

chart data.

Showing the Radar Overlay

The radar overlay displays data based on the most recently

used radar mode.

Select Charts > Radar Overlay.

The radar picture appears in orange and overlays the

navigation chart.

Setting a Custom Park Position

If you have more than one radar on your boat, you must be

viewing the radar screen for the radar you want to adjust.

By default, the antenna is stopped perpendicular to the pedestal

when it is not spinning. You can adjust this position.

From the radar screen, select MENU > Radar Setup >

Antenna Configuration > Park Position.

Use the slider bar to adjust the position of the antenna when

stopped, and select BACK.

Enabling and Adjusting a Radar No Transmit

Zone

You can indicate an area within which the radar scanner does

not transmit signals.

NOTE: This feature is not available on all radar and chartplotter

models.

From a radar screen, select MENU > Radar Setup > Enable

No Transmit Zone.

The no-transmit zone is indicated by a shaded area on the

radar screen.

Select Adjust No Transmit Zone > Move No Transmit

Zone.

Select Angle 1, and select the new location for the first

angle.

Select Angle 2, and select the new location for the second

angle.

Select Done.

Stopping the Transmission of Radar Signals

From a radar screen, select MENU > Radar to Standby.

TIP: Press

from any screen to quickly stop radar

transmission.

Optimizing the Radar Display

You can adjust the radar display settings for reduced clutter and

increased accuracy.

NOTE: You can optimize the radar display for each radar mode.

Select a radar range

(Adjusting the Radar

Restore the default value of the gain setting

on the Radar Screen

Automatically).

Adjust the gain setting manually

Radar Screen

Manually).

Radar Gain and Clutter

Adjusting Gain on the Radar Screen Automatically

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

configured for use in one radar mode may or may not be applied

to other radar modes or to the Radar overlay.

NOTE: Not all options and settings are available on all radar and

chartplotter models.

Range).

(Adjusting Gain

(Adjusting Gain on the

From a radar screen or the radar overlay, select MENU >

Gain.

Select an applicable option for the connected radar:

• To set the gain automatically once, based on average

conditions, the range of the radar signal, and the selected

radar mode, select Auto.

The chartplotter does not adjust the gain automatically in

response to changing conditions.

• To adjust the gain automatically for changing conditions,

select Auto Low or Auto High.

• To adjust the gain automatically to show birds over the

surface of the water, select Auto Bird.

Adjusting Gain on the Radar Screen Manually

For optimal radar performance, you can manually adjust the

gain.

NOTE: Depending upon the radar in use, the gain setting

configured for use in one radar mode may or may not be applied

to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select MENU >

Gain.

Select Up to raise the gain, until light speckles appear across

the Radar screen.

Data on the Radar screen is refreshed every few seconds. As

a result, the effects of manually adjusting the gain may not

appear instantly. Adjust the gain slowly.

Select Down to lower the gain until the speckles disappear.

If boats, land, or other targets are within range, select Down

to lower the gain until the targets begin to blink.

Select Up to raise the gain until the boats, land, or other

targets appear steadily lit on the Radar screen.

Minimize the appearance of nearby large objects, if

necessary.

Minimize the appearance of side-lobe echoes, if necessary.

Minimizing Nearby Large-Object Interference

Nearby targets of significant size, such as jetty walls, can cause

a very bright image of the target to appear on the Radar screen.

This image can obscure smaller targets located near it.

NOTE: Depending upon the radar in use, the gain setting

configured for use in one radar mode may or may not be applied

to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select MENU >

Gain.

Select Down to lower the gain until the smaller targets are

clearly visible on the Radar screen.

Reducing the gain to eliminate nearby large-object

interference may cause smaller or distant targets to blink or

disappear from the Radar screen.

Minimizing Side-Lobe Interference on the Radar Screen

Side-lobe interference may appear to streak outward from a

target in a semi-circular pattern. Side-lobe effects can be

avoided by reducing the gain or reducing the radar range.

NOTE: Depending upon the radar in use, the gain setting

configured for use in one radar mode may or may not be applied

to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select MENU >

Gain.

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 distant targets to blink or disappear from the

Radar screen.

Radar