The R450-DG is a professional-grade AIS receiver with an integrated GNSS receiver (supporting GPS & GLONASS), designed for shoreside monitoring of vessel traffic within VHF range. It decodes all AIS message types, including Class A, Class B, Aids to Navigation, and SARTs, while also providing accurate GNSS positioning data alongside the AIS feed.

With both Ethernet and built-in Wi-Fi connectivity, the R450-DG streams AIS and GNSS data directly to PCs, servers, or mobile devices over wired or wireless networks. It supports local monitoring, sharing data across a network, or sending AIS and GNSS data over the Internet to a fixed IP address for centralised display.

The compact ABS enclosure with carbon-reinforced connector slides is lightweight yet durable, and houses Comar’s proven high sensitivity dual-channel parallel AIS receiver, trusted in professional environments worldwide.

The R450 series is offered in a number of variants to suit different requirements:

D Series use a Digi® network module, offering support for up to 32 simultaneous UDP connections.
X Series use a Lantronix® XPort® module, supporting up to 4 TCP and 1 UDP client/server connections.
E Suffix models are Ethernet-only variants and do not include a Wi-Fi module. (Contact us for more information)
G Suffix models include an integrated GNSS receiver.

FEATURES

Professional-grade, dual-channel parallel AIS receiver with integrated GNSS receiver
Decodes all AIS message types: Class A, Class B, Aids to Navigation, SARTs, and more
Ethernet port for direct connection to PCs, servers, or local networks
Built-in Wi-Fi for wireless monitoring and streaming to multiple devices
Supports AP, Station, and AP+STA Wi-Fi modes with TCP/UDP data output
Rugged ABS housing with carbon-reinforced connector slides
Built-in USB port for local monitoring and configuration
Ideal for feeding AIS and GNSS tracking data to websites or monitoring servers
Supplied complete with software

APPLICATIONS

Monitoring of shipping for government and port authorities
Managing vessel traffic at port approaches
Supporting search and rescue operations
Locating vessels for tug and supply operators
Analysing shipping activity in designated zones
Monitoring fishing areas
Feeding AIS & GNSS data to vessel tracking websites and services

Technical Specification

Specification	Details
Part Number / SKU	R450-DG
Model	Comar R450-DG Network AIS Receiver with Ethernet, WiFi & GNSS
Primary Application	Shoreside VTS Monitoring, Port Authorities, Marine Telemetry, Coastal AIS Networks
Receiver Architecture	Dual Parallel Channel Receiver (Class A, Class B, SOTDMA, AtoN, SART)
Frequency Range	156.025 MHz to 162.025 MHz (AIS 1: 161.975 MHz, AIS 2: 162.025 MHz)
Sensitivity	-112 dBm for 20% PER
GNSS Receiver	Integrated Multi-Constellation GNSS / DGPS Receiver (GPS, GLONASS, Galileo)
Supply Voltage	12 V DC to 24 V DC (9 V DC to 30 V DC Input Range)
Power Consumption	< 3.5 W
Data Output Formats	• Ethernet: RJ45 (10/100 Mbps) TCP/IP & UDP Network Streaming • WiFi: 802.11 b/g/n (Access Point or Client Mode) • NMEA 0183: High-speed RS422 / RS232 Serial (38,400 baud) • USB: Virtual COM Port Interface
Connector Interfaces	• VHF Antenna: BNC Female (50 Ohm) • GNSS Antenna: TNC Female (50 Ohm) • Ethernet: RJ45 Socket • Power / Data: Terminal Block / USB-B
Country of Origin	United Kingdom (UK)
Operating Temperature	-15°C to +55°C (5°F to 131°F)
Waterproof Rating	IP40 (Indoor / Equipment Rack Installation)
Dimensions & Weight	140 mm x 120 mm x 42 mm; 420 g