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GMR 21
Manual
Garmin GMR 21 User Manual
Gmr 21/41
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Owner’s Manual
marine radar
GMR 21/41
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This manual is related to the following products:
GMR 41
Table of contents
Document Outline
GMR 21/41 Marine Radar
Introduction
About This Manual
Terminology Used Throughout This Manual
GMR 21/41 Operation
Radar Overview
The Radar Page
Radar Page Layout
Range Rings
Heading Line
Digital Navigation Data
The Radar Configuration Page
The Radar Adjustment Menu
Gain
Sea Clutter
Rain Clutter
FTC (Fast Time Constant)
Zoom
Target Expansion
Trails
Guard Zone
VRM/EBL
MARPA
MARPA Setup
Hide/Show Navigation Features
Additional Adjustment Menu Items
Map Cursor On/Off
Setup
The General Tab
The Display Tab
The MARPA Tab
The Advanced Tab
Enter Standby/Begin Transmitting
Map Page Radar Overlay
Appendix
European License Requirements
Specifications
FCC Compliance
Declaration of Conformity
Software License Agreement
LIMITED WARRANTY
Caution
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