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5
Capabilities
The GBR 21 offers a host of powerful capabilities to
enhance the performance and accuracy of your GARMIN
GPS receiver:
• Performance— Single channel operation provides
high-sensitivity manual tuning throughout the
beacon broadcast band.
• Ease of Use— Operation is controlled using the
Beacon Receiver Setup and Beacon Log pages on
your GPS unit.
• Convenience— May be remotely mounted in an
out-of-the-way location. Receiver status informa-
tion is displayed directly on the GPS unit.
• Low Power Consumption— Draws approxi-
mately 130 milliamps during normal operation.
• Interfaces — User-selectable operation for 4800 or
9600 baud.
• Accuracy— Improves position accuracy of GPS
unit to better than 10 meters (2 drms).
Package Contents
Your GARMIN GBR 21 package includes:
• GBR 21 unit
• Power/Data Cable
• Antenna coupler w/ 30’ cable & whip antenna
or GA 22/23 H-field beacon antenna w/ 30’ cable
• Owner’s Manual
• Beacon Reference Card
This package provides the materials required to
permanently install the GBR 21 and connect it to your
GARMIN GPS unit. In addition to supplying power to the
GBR 21, the power/data cable is used to interface the GBR
21 to the GPS unit. The receiver may be powered by an
external 10-18 VDC power source. Power to the receiver
should be controlled by an on/off switch (not included),
such as an accessory switch on the control console.
Capabilities &
Package Contents
The GBR 21 may be used with a
variety of GARMIN GPS
receivers. The list below
identifies most, but not all,
compatible models. If your GPS
receiver is not listed, you may
check with your GARMIN
dealer or contact GARMIN
product support at 1-800-800-
1020 to verify compatibility.
•GPS II/II+/III/III+/III Pilot
•GPS eMap/eTrex/NavTalk
•GPS StreetPilot/ColorMap
•GPS 12/12XL/12CX/12Map
•GPS 38/40
•GPS 45/45XL/48
•GPS 50/75
•GPS 65
•GPS 89/90/92/95
•GPS 120/125
•GPSCOM 170/190
•GPSMAP 130/135/180/185
•GPSMAP 162/168
•GPSMAP 175/195/295
•GPSMAP 210/220/215/225
•GPSMAP 230/235
Overview