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GMR 21/41 Owner’s Manual i
INTRODUCTION
About This Manual
Thank you for choosing Garmin’s GMR 21/41 marine radar. The
addition of the GMR 21/41 marine radar to your Garmin Marine
Network, enhances the capability of your system by adding graphical
radar data to your Garmin chartplotter.
This manual covers the features and operation of the GMR 21/41
marine radar when viewed on the Garmin chartplotters. To get the
most out of your new radar, take time to read this manual and learn
the operating procedures for your unit in detail.
The Introduction contains information about this manual and the
Table of Contents.
The Main Pages contain information on the setup and operation of the
GMR 21/41.
The Appendix contains information such as specifications and license
requirements. You can also find warranty and FCC information in the
Appendix.
Use the Index as a key word search to help you find information more
quickly.
Terminology Used Throughout This Manual
• This manual refers to the radome hardware as the “scanner,”
“radar,” or “GMR 21/41.” These terms can be used
interchangeably.
• This manual uses the term “chartplotter” when referring to a
Garmin GPSMAP 3000 series multi-function display.
• This manual uses the term “Radar Page.” The Radar Page is
a dedicated page on the Garmin chartplotter showing radar
information. Radar information can be displayed as a split
screen on any of the chartplotter main pages.
• This manual uses the term “
highlight” when referring to the
on-screen cursor. To highlight something, use the Rocker key
on the chartplotter to move the cursor to the desired item. The
on-screen cursor is represented by a highlighted yellow box.
INTRODUCTION > ABOUT THIS MANUAL