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GMR 20/40 Owner’s Manual 
  
 
 5
The Radar Configuration Page
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 on “Configuring the Main Pages.”
To display the Radar Configuration page:
Press and hold the 
DATA\CONFIG key.
The Radar Adjustment Menu
The Radar Adjustment Menu is a numbered list of options that allow 
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 Arrow Keypad, or Data Entry Keys. 
GMR 20/40 Owner’s Manual 
5
GMR 20/40 O
PERATION
 > 
T
HE
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ADAR
 C
ONFIGURATION
 P
AGE
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ADAR
 A
DJUSTMENT
 M
ENU
Radar Configuration Page
Radar Adjustment Menu