Garmin GBR 21 - Manual (Page 21)

19
Reference
Physical
Size: 5.2”L x 3.6”W x 1.5”H
(132mm x 91mm x 38mm)
Weight: 6.8 ounces (0.193 kg)
Power
Voltage: 10 - 18 volts DC using supplied
power/data cable
Current Drain: 130 mA
Signal Processing
Frequency Range: 283.5 - 325.0 kHz
Minimum Signal: 10 µV
Acquisition Time: 15 seconds
Data Processing
Demodulation: MSK (Minimum Shift Keying)
MSK Bit Rates: 25, 50, 100, 200 bps
Interfaces
Input: RS-232 or NMEA 0183
4800 or 9600 baud
(jumper selectable)
Input Sentences: Binary (Magnavox),
$PSLIB (Starlink)
Output: RS-232
4800 or 9600 baud
(jumper selectable)
Output Sentence: RTCM SC-104
(6 of 8 bit format)
Antenna Coupler
Diameter: 1.6” (41mm) base, .6” (15mm) top
Height: 4.8” (122mm) without antenna
16.8” (427mm) with antenna
GBR 21
Specifications