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EM-Trak

MCT-EMTR-B922

B922: AIS Class B CSTDMA Transponder 2W Wi-Fi BT USB-NMEA0183-N2K

The EM-Trak B922 Class B CSTDMA AIS transponder transmits at 2W and integrates Wi-Fi and Bluetooth for flexible wireless connectivity. It features a 72-channel GPS receiver and NMEA 2000, NMEA 0183 and USB interfaces for full integration with navigation systems. Weather-resistant (IPx6 & IPx7), it provides a robust solution for safety at sea.

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£696.59 GBP

£696.59 GBP ~~£715.44 GBP~~

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Prices exclude import taxes. DAP delivery: import taxes are paid on delivery.

Available in stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

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Installers near you

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Support service

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Detailed description

The EM-Trak B922 AIS Class B transponder is a CSTDMA solution designed to enhance safety at sea by enabling your vessel to be seen and to see others. It transmits at 2W, ensuring reliable detection by other vessels and shore stations equipped with AIS systems. The integration of Wi-Fi and Bluetooth provides flexible wireless connectivity with mobile devices and onboard navigation systems.

Connectivity and Integration

The B922 features complete electrical interfaces including NMEA 2000, two NMEA 0183 ports (one high-speed at 38,400 baud for chartplotters and one low-speed at 4,800 baud for other sensors), and a USB port. This versatility ensures easy integration into most existing marine electronic architectures. All converted NMEA PGNs are multiplexed to all NMEA 0183, USB, Wi-Fi, and Bluetooth outputs, guaranteeing consistent data broadcasting.

GPS Performance and Robustness

With its integrated 72-channel GPS receiver, compatible with L1 GPS, GLONASS, Galileo, and BeiDou, the B922 ensures precise positioning for your AIS transmissions. Its compact dimensions of 149 x 118 x 47 mm (L x W x H) and weight of 320g facilitate installation. The unit is designed to withstand demanding marine environments, with water and weather resistance compliant with IPx6 and IPx7 standards. It operates on an input voltage of DC 12–24V (9.6–31.2V maximum) with an average power consumption of 170mA / 2.05W at 12V.

Advanced Features

The B922 integrates a VHF transceiver with a frequency range of 156.025 to 162.025 MHz. The CSTDMA output power is 33dBm ± 1.5 dB. It offers configuration modes via PC (proAIS2) or smartphone (CONNECT-AIS), enabling easy commissioning and diagnostics. LED indicators (power, TX status, error, silent mode) provide instant visual feedback on the device's operational status. The silent mode, activable via configuration tools or an external switch, allows you to stop your own vessel's transmissions while continuing to receive position reports from others.

Documentation

Type	Nom
	EN - Manuel utilisateur - EM-Trak gamme B900 (B921-B954)
	FR - Manuel utilisateur - EM-Trak gamme B900 (B921-B954)
	EN - Guide de démarrage rapide - EM-Trak gamme B900 (B921-B954)
	EN - Déclaration de conformité - EM-Trak B922

Expert opinion

« Analyse technique du transpondeur AIS EM-Trak B922 : connectivité et fiabilité »

Le transpondeur AIS EM-Trak B922 est un choix pertinent pour les navires souhaitant intégrer les avantages de l'AIS sans les contraintes d'une installation complexe. En tant que transpondeur de classe B CSTDMA, il offre une puissance de transmission de 2W, assurant une visibilité par rapport aux navires équipés de systèmes AIS de classe A ou de classe B SOTDMA.

L'atout majeur de ce modèle réside dans sa connectivité étendue. L'intégration du Wi-Fi et du Bluetooth permet une interconnexion fluide avec les tablettes, smartphones et ordinateurs portables, facilitant la visualisation des données AIS sur des applications de navigation modernes. De plus, la présence des interfaces NMEA 2000 et NMEA 0183, ainsi qu'un port USB, garantit une compatibilité universelle avec les systèmes électroniques de bord existants, qu'il s'agisse de traceurs de cartes, d'écrans multifonctions ou de PC de navigation.

Le récepteur GPS intégré à 72 canaux, compatible avec plusieurs constellations (GPS, GLONASS, Galileo, BeiDou), simplifie grandement l'installation en évitant la nécessité d'une antenne GPS externe dédiée. Sa robustesse, confirmée par les certifications IPx6 et IPx7, assure une durabilité dans l'environnement marin. Le mode silencieux est également une fonctionnalité appréciable pour les situations où la discrétion de transmission est requise, tout en maintenant la capacité de recevoir les informations des autres navires.

Il est important de noter que, bien que fiable, la classe B CSTDMA offre un taux de rapport et une puissance inférieurs à ceux de la classe A ou B SOTDMA. Ce modèle est idéal pour ceux qui recherchent une solution AIS autonome et facile à intégrer pour la sécurité active en mer.

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B922: AIS Class B CSTDMA Transponder 2W Wi-Fi BT USB-NMEA0183-N2K

£696.59 GBP

£696.59 GBP ~~£715.44 GBP~~

Frequently Asked Questions

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What type of AIS transponder is the EM-Trak B922, and what is its transmit power?

The EM-Trak B922 is a Class B CSTDMA AIS transponder. It transmits at an output power of 2W (33 dBm ± 1.5 dB).

What connectivity options are available on the AIS transponder EM-Trak B922?

The AIS transponder EM-Trak B922 offers extensive connectivity, including:

Wi-Fi (2.4GHz IEEE 802.11 a/b/g/n)Bluetooth (V4.0)USBNMEA 0183 (two ports: one high-speed at 38,400 baud and one low-speed at 4,800 baud)NMEA 2000 (LEN=1)All converted NMEA PGNs are multiplexed to all outputs NMEA 0183, USB, Wi-Fi, and Bluetooth.

What are the dimensions and weight of the AIS transponder B922?

The AIS transponder B922 has the following dimensions: 149 mm (Length) x 118 mm (Width) x 47 mm (Height). Its weight is 320 g for the standalone variant (without integrated antenna splitter).

What type of GPS receiver is integrated into the B922 transponder, and which satellite navigation systems does it support?

The B922 transponder integrates a 72-channel GPS receiver, compliant with IEC 61108-1. It is compatible with the L1 band of the following satellite navigation systems:

GPS (1575.42 MHz)GLONASS (1597.1–1609.5 MHz)Galileo (1575.42 MHz)BeiDou (1561.098 MHz)

How should I power the AIS transponder B922?

The AIS transponder B922 requires a DC input voltage of 12 to 24 V (operating range from 9.6 to 31.2 V maximum). Its average power consumption is 170 mA / 2.05 W at 12 V. It is recommended to use crimped and soldered terminals for connection to the power source, via a suitable circuit breaker and/or a 3 A fuse block.

What do the LED indicators on the AIS transponder B922 mean?

The AIS transponder B922 is equipped with several LED indicators to signal its status:

Green LED: Indicates the transceiver is configured, powered, and has transmitted.Red LED: Indicates a system error has been detected.Blue LED: Indicates silent mode is active (your boat’s transmissions are stopped, but reception of other boats continues).Amber LED:

If flashing: The device is attempting to acquire a GPS position.If solid: The transceiver is not transmitting. This may be due to occupied AIS radio channels, silent mode enabled, or a transmission stop command from an AIS base station.