Garmin gmr 21 User Manual

The Radar Configuration Page is used to change the look of the Radar 

Page. Please refer to the GPSMAP 3000 series owner’s manual for 

information about “Configuring the Main Pages.”

Press and hold 

DATA\CONFIG.

The Radar Adjustment Menu is a numbered list of options that allows 

direct access to the settings and features most commonly used on the 

Radar Page. There are several adjustment options available: Gain, Sea 

Clutter, Rain Clutter, FTC, Zoom, Target Expansion, Trails, Guard 

Zone, VRM/EBL, MARPA, and Hide/Show Navigation Features. All 

adjustments are made using the Rocker, or Data Entry keys. 

GMR 21/41 O

PERATION

 > 

T

HE

 R

ADAR

 C

ONFIGURATION

 P

AGE

—T

HE

 R

ADAR

 A

DJUSTMENT

 M

ENU