Garmin gmr 21-41 User Manual

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•  Cross-talk Rejection—toggles cross-talk rejection on or off. 

Radar cross-talk may occur when two or more radar equipped 

vessels are operating in proximity to one another. Cross-talk 

rejection automatically filters out the cross-talk interference.

Use the Display sub tab to adjust settings for: Center Offset, Rings, 

Background color, Heading Line, Bearing Reference, and Navigation 

Features. The available Display sub tab options are:

• 

Center Offset—sets your location on the screen. Center 

places your current location in the center of the screen. Look 

Ahead shifts your current location toward the bottom of the 

screen, allowing you to view an area farther ahead. Auto Shift 

adjusts your location on the screen according to the current 

speed.

•  Rings—toggles the radar rings on or off. 
•  Background—sets the background color for the Radar Page. 

Available options are Black, Blue, or White. 

•  Heading Line—toggles the Heading Line on or off.
•  Bearing Reference—sets your bearing, either Absolute or 

Relative. Relative calculates the bearing relative to your 

vessel's heading. Absolute calculates the bearing relative to 

North. 

• 

Navigation Features—allows you to show or hide 

navigational features on the Radar Page. Use the ROCKER 

and the ENTER key to select or clear options.

  •  Waypoints—show user waypoints on the Radar Page.
   •   Bearing Line—show a bearing line on the Radar Page. The 

bearing line appears as a line from your current position to 

the active destination waypoint.

  •  Course Line—show a course line from your starting    

  point to the active destination waypoint, which is similar to  

  navigation on a map.