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Comar SLR350Ni

Technical information and details SLR350Ni

Sebastian Olias avatar
Written by Sebastian Olias
Updated over 5 months ago
SLR350Ni-MT-FrontLeft-1920x1440_1440px.jpg

Specifically designed for coastal monitoring of AIS-equipped vessels, the SLR-350Ni is a new take on traditional AIS receivers that enhances the functionality of the successful Comar R400N (SLR350N).

This compact dual-channel synthesized VHF receiver is based on the Raspberry Pi 3 mini computer. Its built-in Ethernet, WiFi, and USB interfaces allow it to be connected to any wired or wireless network and start streaming data to up to five user-defined destinations, excluding the reserved MarineTraffic data stream.

The unit is capable of receiving and decoding all AIS transmissions from vessels fitted with Class A or Class B AIS transceivers, Aids to Navigation, and SART. Using compatible software, AIS data transmitted from ships within range can be displayed on the screen, giving a visual representation of all traffic within the VHF range. The receiver's web UI also enables local plotting.

Technical Information

Receiver

  • 2 Channel AIS receiver
    for 161.975 MHz and 162.975 MHz

  • Class A/B, Channel Spacing 25kHz

Sensitivity

  • > -112 dBm for 20% MER

Power

  • 5.1V DC, 2500mA min

  • microUSB Power connector

Operating Temperature

  • -15°C to +55°C

Connector

  • BNC 50Ω for antenna

  • RJ45 Ethernet Connector 10/100 BASE-T

  • 4x USB 2.0 Type B Socket Connector

  • Wifi

  • HDMI

LED

  • Power LED

  • Channel A Reception LED

  • Channel B Reception LED

Output

  • NMEA0183, 38.400 Baud, VDM

Protocol

  • TCP, UDP, DHCP, HTTP, AUTOIP

Dimensions

  • 135x80x37 mm

Weight

  • 180 g

Wiring Diagram

SLR350NI_Wiring.jpg

LED Status

The green LED (POWER) shows that the device is on. If no green light appears, recheck the power connection.

The two red LEDs (A/B) blinks from time to time when it receives AIS data. If one of the red LEDs does not blink irregularly, check the antenna, the coax cable and the cable connections. Its indicate that the device receive no AIS data.

The orange and green LED on the network port is off if no network cable is connected or nothing is connected to the other end of the network cable. In this case, check the network cable and the connection.

The orange LED on the network port is permanently on when a connection has been established to a network device (e.g., switch).

The green LED on the network port flashes when a connection has been established (see orange LED). It does not mean that the data is being transmitted to MarineTraffic.

Links

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