The newest Class B “SO”

Automatic Identification System (AIS) transceiver.

Naviom AIS will provide information about other ships in long distance. You can see the location of other vessels equipped with AIS, their course, speed, name and other information. Naviom AIS will also transmit information about its location and course to reduce the risk of collision with other vessels.

Key Features:

  • Latest AIS standard - ITU-R M.1371-5.
  • Simultaneous AIS data exchange via two radio channels.
  • Built-in GPS antenna. There is no need to install an external one!
  • Powerful dual-core 240Mhz processor.
  • Fully compatible with chartplotters that support NMEA2000 or NMEA0183.
  • Wi-Fi support.
  • Waterproof plastic case.
  • Protected against deep discharge of batteries.
  • Supply voltage from 10.8 to 30 volts.
  • Low power consumption 1 watts averaged (0,08A @ 12V), 14 watts in peak (during transmission within 0.027 seconds).
  • Small dimensions 5.4 in. x 3.8 in. (5.2 in. with connectors) x 1.6 in. (135 mm x 95 mm (130 mm with connectors) x 39 mm)
  • The kit includes a waterproof connector and mounting accessories.

Differences from similar solutions developed by other manufacturers:

  • “Friendly ships” address book with notifications about ships from address book, when they appear in sight range.
  • Weather reports from AtoN stations.
  • Can display information about other ships in a mobile application without a chartplotter.
  • Notifications on dangerous encounters through the mobile application.
Get it on Google Play

Technical specification

Power specification

Supply voltage

12 V dc / 24 V dc

Operating voltage range

10.8 V dc to 30 V dc

Power consumption

1 W (0.08A with 12V power supply)

14 W in peak (during transmission within 0.027 seconds).

Fuse rating

2 A

LEN (Load Equivalency Number)


Dimensions and weight

Dimensions without connectors

5.4 in. x 3.8 in. x 1.6 in.

135 mm x 95 mm x 39 mm

Dimensions with connectors

5.4 in. x 5.2 in. x 1.6 in.

135 mm x 130 mm x 39 mm


7 oz. / 200 gram

Environmental specification

Operating temperature range

-15°C to +55°C (+5°F to +131°F)

Storage temperature range

-20°C to +75°C (-4°F to 167°F)


93% at 40°C



AIS specification





Operating frequency range

The frequencies are set by the base station in the range of 156.025 - 162.025 MHz for AIS in the assigned mode. The frequencies of 161.975 MHz and 162.025 MHz when working in autonomous mode.


For DSC - 156.525 MHz (channel No. 70).

Channel spacing

25 kHz

Carrier frequency error

3 ppm (±486Hz @ 162MHz)

Bit rate

9600 bps (for AIS mode)

1200 bps (for DSC mode)


GMSK/FM (for AIS mode)

PH  (for DSC mode)

Modulation index


Access to the data link

«SOTDMA» (Self organized time division multiple access)

Transmit output power

5W ±1,5dB High setting / 1W ±1,5dB Low setting

Emission class

25K0F2D (for AIS mode)

25K0G2B (for DSC mode)

Slotted modulation mask

Δfc < ±10 kHz: 0 dBc

±10 kHz < Δfc < ±25 kHz: below the straight line between −25 dBc at ±10 kHz and –70 dBc at ±25 kHz

±25 kHz < Δfc < ±62.5 kHz: –70 dBc


-110 dBm @ 20% PER

ITU-R Recommendation

ITU-R M.1371-5

GNSS receiver specification



Cold start acquisition

26s nominal

Position source


Frequency range

1573.4 - 1577.4 MHz

1597.5 - 1609.3 MHz

Emission class

1M02G7D, 2M05G7D

External connections

VHF antenna connector type

SO-239 50Ω coaxial

NMEA 2000 connector type

5 way DeviceNet male

Power and NMEA 0183

4 way bare ended wires

NMEA 0183 port

NMEA 0183 HS (IEC 61162–1) compliant,

one-directional, RS422 levels, 2 wire interface (differential signalling), configurable baud rate

Wi-Fi specification

IEEE 802.11 bgn, up to 150 Mbps

Wi-Fi frequency range

2400.0 - 2483.5 MHz

Wi-Fi maximum transmitter power


Wi-Fi emission class

22M0G1W, 22M0D1W, 40M0D1W, 40M0G1W

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