The WD450Ni, launched in November 2024, is among the latest MarineTraffic AIS receivers and is specifically designed for monitoring AIS signals near coastlines.
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This compact device features a dual-channel VHF receiver and runs on the Raspberry Pi mini-computer platform. With built-in Ethernet, WiFi, and USB ports, it easily connects to both wired and wireless networks. The receiver supports data streaming to up to five custom destinations, excluding the reserved MarineTraffic data stream.

The unit provides great versatility. It can receive and decode AIS transmissions from vessels equipped with Class A or Class B transceivers, as well as signals from Aids to Navigation and SART. Users can access the web interface for local data plotting or use the software on their computers for visualizing the information.

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

The green LED between the antenna connectors blinks occasionally when it receives AIS data. If the green LED does not blink irregularly, check the antenna, the coax cable, and the cable connections. It indicates that the device does not receive AIS data.

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.