dAISy 2+ dual-channel AIS Receiver with NMEA 0183 output

This AIS receiver is built for boaters. Compact, robust, and with all the interfaces you need. Thanks to its two-channel design, the dAISy 2+ receives about 40% more messages than the cheaper single-channel dAISy. This improves acquisition time and update rate of AIS targets, while range is comparable for both models.

See also the accessories section for a matching antenna splitter, preamplifier, and RF adapters and cables.

Specification

Dual channel receiver
Receiving on channel A (161.975 MHz) and B (162.025 MHz) simultaneously
38400 baud serial output over USB in industry standard NMEA format (AIVDM)
NMEA 0183 output at 4800, 9600 or 38400 baud for connection to chart plotters
Auxiliary TTL serial output for connection to other devices (like this WiFi module)
No drivers required for Windows 10, Windows 11, Mac OS X and Linux (driver available for older versions of Windows).
Supported by qtVlm, Boat Beacon, OpenCPN and SailGrib WR on Android devices with USB OTG.
BNC connector for 50 Ohm VHF antenna (antenna not included)
Mini-USB connector for data and power (3ft USB cable included)
5mm pitch terminal block for NMEA (matching plug with screw terminals included)
Can be powered over USB or from a 12-36V DC power source
Low power consumption, less than 500mW in receive mode (<100mA at 5V, <40mA at 12V)
Very robust aluminum enclosure with mounting holes, size: 105 x 80 x 28mm
Made in the USA

NMEA 0183 / RS-422 output

The dAISy 2+ AIS Receiver can directly talk to chart plotters and other marine electronics. In addition, the integrated DC/DC converter allows to power it from your boat's 12-36V power system, removing the need for a USB power source.
dAISy was successfully tested with chart plotters (Garmin GpsMap 750s, Standard Horizon CP180i, Samyung N700), NMEA routers (vyacht) and RS-422 routers (Transas 4 port RS-422 to Ethernet). I expect it to also work with other devices that support NMEA 0183 or RS-422 input.

dAISy works great with OpenCPN and OpenPlotter

OpenCPN, an open source chart plotter and navigation software, can be used with devices like dAISy to track ships on a map. Any software running on a PC, Mac or small Linux computer that accepts AIS data from a serial input will work with dAISy.

Several of our customers built chart plotters based on a Raspberry Pi. The OpenPlotter project is a great starting point as it includes all the required applications and easy to use configuration screens.

Disclaimer: WE DO NOT RECOMMEND to rely solely on dAISy for navigation and collision avoidance!

Reporting to MarineTraffic

dAISy is well suited to report nearby ship traffic to websites and services like MarineTraffic, AISHub or Pocket Mariner.

The easiest approach is to use dAISy with AIS Dispatcher which allows to feed the AIS data stream to multiple targets, including services like MarineTraffic and AISHub.

An alternative approach is to use Kplex. Kplex allows you to setup a NMEA server to distribute AIS to other devices on your network, like for example via WiFi to a navigation app running on an iPad. MUPLEX for Linux and NMEA Router for Windows are a similar tools.