R500Ni Receiver

SKU: 001-1048


The R500Ni with WiFi is an AIS receiver interfaced to an ARMv8 microcomputer. The R500Ni is designed for coastal monitoring applications and is capable of filtering and processing AIS data and forwarding it across a network. In this way, several R500Ni units can be used to form a complete networked monitoring solution for monitoring a port and its approaches.

The unit has both WiFi and Ethernet connectivity, as well as 4 USB ports and an HDMI connector for a monitor display. What makes the R500Ni different from other receivers is that it can be deployed in any AIS network using proprietary software specific to that network and is shipped ‘bare bones’.

The R500Ni is designed for use by the commercial market and uses Comar’s well proven and internationally specified high sensitivity dual channel parallel receiver, and is quite possibly the most flexible and powerful AIS receiver available on the market.

Note: This product was previously known as the SLR350Ni


• Designed for commercial land-based monitoring of sea traffic
• WiFi and Ethernet network connectivity
• Built-in Microcomputer for on-board data processing
• Industry Grade Dual Channel AIS Receiver
• Built-in HDMI port for a Display Monitor
• 4 Built-in USB ports for local monitoring
• Ideal for feeding vessel tracking data to a website or a vessel monitoring server
• Built-in micro-SD card slot for storing the OS and supporting software


• For shoreside monitoring of shipping by Government bodies
• Managing traffic at local port approaches
• Assisting in Search and Rescue operations
• Locating ships for local tug/supply operators or security operations
• Analysing shipping in specific areas
• Monitoring fishing zones
• Feeding data to AIS vessel tracking websites


• R500NGi – Intelligent Network AIS & GPS receiver with WiFi
• G300Ni – Intelligent Network GPS receiver with WiFi
• AV200 – Base Station Antenna with Ground Plane
• AV300 – Fibreglass VHF Antenna with Universal Base



• Weight: 400g
• Dimensions: L 135 mm W 80 mm D 39 mm
• Mounting: To flat surface; 2 holes in case bottom
• Connections: Micro USB (Power);
• RJ45 Ethernet 10 / 100 Base-T;
• 4x USB 2.0 type B socket;
• BNC Coaxial to antenna;
• Micro-SD card slot
• Construction: Plastic housing
• Finish: Black plastic, textured


• Power Supply: 5 V dc; 900 – 1200 mA typical
• Antenna Impedance: 50 Ω
• USB power: 100 mA each port (max)


• Frequency Channel A 161.975 MHz
• Channel B 162.025 MHz
• Sensitivity: < -112 dBM
• Microcomputer: Raspberry Pi™ 3 (1.2 GHz 64bit quad-core ARM v8 CPU)
• WiFi: 802.11n
• Display: 3 Indicator LEDs (Ch A; Ch B; Power ON)
• Data Types
• Received: Name of Vessel; MMSI Number; Position; Speed (SOG); Course (COG); Type of Vessel; Call Sign; Heading; Rate of Turn; Navigational Status; Vessel Dimensions; Destination and others


• IP Rating: IP40
• Operating temp: -15°C to +55°C
• Compass: Safe Distance 50 cm


• Conforms with: IEC 61993-2; IEC 60945; EN 61000-6-1 & 2; FCC part 15


• Supplied: R500Ni receiver ‘bare bones’ without software
• Option: Internal GPS module installed via GPIO port