DGPS Receiver

Differential Beacon Receiver

Model: DBR-300 (USCG/IALA Radiobeacon Compatible)
A beacon receiver that receives and modulates RTCM SC-104 differential corrected data format transmitted by DGPS reference radiobeacon stations

DBR-300 is a high performance differential beacon receiver combined with a high-sensitivity antenna in an extremely compact and fully waterproof enclosure, providing 1 ~ 5 meter differential GPS positioning accuracy by utilizing radiobeacon signals (with 283.5 ~ 325 Khz DGPS corrections) broadcast by USCG or IALA beacon stations at no charge. Both Beacon receiver & antenna are built inside the enclosure, making DBR-300 a single device featuring easy installation, maintenance, and integrated services.

(Compatible with Garmin's e-Trex™ & Thales' Magellan 315™; with DGPS Positioning Accuracy ranging from 5m to 1m)

Specifications

SIGNAL PROCESSING
Frequency Range	283.5 ~ 325.0 Khz
Channel Spacing	500 Hz
Frequency Resolution	100 Hz
Minimum Signal Strength	<5 uV/m @ 100bps
Dynamic Range	>90 dB
Adjacent Channel Rejection	60 dB @ 1 Khz
Acquisition Time	< 2 sec. manual command < 2 sec. automatic warm start < 1 min. automatic cold start
Selection of Station	Automatic or manual
Signal Detection	Direct digital synthesis (DDS)
DATA PROCESSING
Demodulation	MSK (Minimum Shift Keying)
Error Detection	Parity error check
MSK Bit Rates	50, 100, 200 (manual or automatic)
DATA PORTS
Housing	7 pin circular, hermetically sealed
Pins	Gold plated for anti-corrosion
POWER REQUIREMENTS
Input Voltage	12 ~ 24 DC with power -reverse protection
Power Consumption	Less than 1.6W 12V DC (max)
ENVIRONMENTAL CONDITIONS
Operating Temperature	30º ~ +75ºC
Storage Temperature	40º ~ +85ºC
Relative Humidity	95% non-condensing
PHYSICAL CHARACTERISTICS
Dimension	3.25 inches (height) x 4.4 inches (diameter)
Weight	1.37 lbs
Enclosure	High impact, corrosion-proof, PC (polycarbonate) resin
Construction	Hermetically sealed, fully weather proof
Mounting	Pole mount to 1" - 14 threaded pipe

(This specification is subject to change without prior notice.)

Data Updated: August 24, 2005

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