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EM-Trak

MCT-EMTR-B923

B923: AIS Class B CSTDMA Transponder 2W VHF Splitter USB-NMEA0183-N2K

The EM-Trak B923 is a 2 W Class B CSTDMA AIS transponder featuring a built-in VHF antenna splitter to simplify installation. It includes a 72-channel multi-GNSS GPS receiver and provides NMEA 2000, NMEA 0183, and USB interfaces for versatile connectivity.

Water- and weather-resistant (IPx6 and IPx7), it ensures reliable visibility of your vessel. Supplied as a single unit.

Price excl. import taxesBenefit from the professional rate

£628.63 GBP

£628.63 GBP ~~£635.06 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

Designed for safety and connectivity at sea, the EM-Trak B923 AIS Class B transponder is a CSTDMA solution offering 2W transmit power and integrating a VHF antenna splitter. This device allows the use of a single VHF antenna for your radio and AIS, simplifying installation and reducing clutter on your vessel. It is also equipped with a 72-channel multi-GNSS GPS receiver compatible with L1 GPS, L1 GLONASS, E1 Galileo, and B1 BeiDou, ensuring precise positioning.

Connectivity and System Integration

The B923 provides extensive connectivity to integrate easily with your existing navigation system. It features two NMEA 0183 ports (one high-speed 38 400 baud for chartplotters and one low-speed 4 800 baud for other sensors), a NMEA 2000 interface, and a USB connection. This versatility enables multiplexing of NMEA 2000 data to NMEA 0183 outputs, USB, and Wi-Fi/Bluetooth connections for compatible models (the B923 does not include Wi-Fi or Bluetooth, unlike the B924/B954). Configuration can be performed via PC or smartphone using dedicated tools.

Robust Design and Technical Specifications

With compact dimensions of 149 x 118 x 47 mm (L x W x H) and a weight of 345 g (splitter variant), the B923 is designed for discreet installation. It is powered by a 12 to 24V DC supply (maximum range 9.6 to 31.2V) and has an average power consumption of 245 mA / 2.95 W at 12V. Its water- and weather-resistant design, compliant with IPx6 and IPx7 standards, ensures durability in marine environments. The unit is supplied with a FLEXI-FIT mount for flexible and secure installation. The CSTDMA output power is 33 dBm ± 1.5 dB.

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 B923

Expert opinion

« EM-Trak B923 : L'AIS Classe B compact avec splitter VHF intégré »

Le transpondeur AIS EM-Trak B923 se positionne comme un choix stratégique souhaitant améliorer leur sécurité en mer sans complexifier leur installation. Sa principale valeur ajoutée réside dans son diviseur d'antenne VHF intégré. Cette caractéristique permet aux utilisateurs de mutualiser leur antenne VHF existante pour la radio et l'AIS, évitant ainsi l'ajout d'une antenne dédiée à l'AIS, ce qui simplifie le câblage, réduit l'encombrement sur le mât ou l'arceau, et minimise les coûts d'installation.

En termes d'intégration système, le B923 offre une grande flexibilité. Avec ses interfaces NMEA 2000, NMEA 0183 et USB, il se connecte aisément à la plupart des traceurs de cartes et systèmes de navigation modernes. La capacité de conversion des PGN NMEA 2000 vers NMEA 0183 est un atout pour les installations mixtes ou plus anciennes. La configuration est intuitive, pouvant être réalisée via un PC avec le logiciel proAIS2 ou même un smartphone, ce qui facilite la mise en service et la maintenance.

Comparé à d'autres modèles de la série B900, le B923 se distingue du B921 et B922 par l'intégration de ce diviseur VHF. Cependant, il est important de noter qu'il s'agit d'un transpondeur Classe B CSTDMA avec une puissance d'émission de 2W, ce qui le différencie des modèles B95x (B951, B952, B953, B954) qui utilisent la technologie SOTDMA avec une puissance de 5W. Le choix du B923 est donc pertinent pour les navigations où les exigences de visibilité sont satisfaites par la Classe B CSTDMA, mais il pourrait être moins adapté aux zones à très fort trafic ou aux navires de grande taille nécessitant une détection prioritaire et un reporting plus fréquent.

Le récepteur GPS multi-GNSS intégré, compatible avec GPS, GLONASS, Galileo et BeiDou, garantit une précision et une fiabilité de positionnement accrues, même dans des conditions de réception difficiles. C'est un point fort pour la robustesse des données transmises. L'indice d'étanchéité IPx6 et IPx7 assure une installation durable dans l'environnement marin, qu'il soit protégé ou exposé.

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B923: AIS Class B CSTDMA Transponder 2W VHF Splitter USB-NMEA0183-N2K

£628.63 GBP

£628.63 GBP ~~£635.06 GBP~~

Frequently Asked Questions

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What is the EM-Trak B923 AIS transponder, and what is its transmission power?

The B923 is a class B CSTDMA AIS transponder. It transmits at a power of 2W, which corresponds to 33dBm ± 1.5 dB in CSTDMA mode. This device is designed to enhance safety and connectivity at sea by allowing your vessel to transmit its position and receive information from other AIS-equipped vessels.

Does the B923 transponder include a VHF antenna splitter?

Yes, the EM-Trak B923 transponder includes a VHF antenna splitter. This feature allows you to use a single existing VHF antenna for both your VHF radio and the AIS transponder, simplifying installation and reducing clutter on your vessel.

What connectivity options are available on the B923 transponder?

The B923 transponder offers extended connectivity for easy integration with your existing navigation system:

Two NMEA 0183 ports: one high-speed port (38,400 baud) for chartplotters and one low-speed port (4,800 baud) for other sensors.A NMEA 2000 interface.A USB connection.It also supports data multiplexing NMEA 2000 to NMEA 0183 and USB outputs.

Does the B923 transponder include Wi-Fi or Bluetooth?

No, the EM-Trak B923 transponder does not include Wi-Fi or Bluetooth. These features are available on other models in the B900 series, such as the B922, B924, B952, and B954.

What are the power requirements for the B923 transponder?

The B923 transponder requires a DC input voltage of 12 to 24V, with a maximum operating range of 9.6 to 31.2V. Its average power consumption is 245mA / 2.95W at 12V. It is recommended to use a 3A circuit breaker or fuse block for connection to the power source.

What type of GPS receiver is integrated into the B923?

The B923 transponder is equipped with an integrated 72-channel multi-GNSS GPS receiver compliant with IEC 61108-1. It supports L1 GPS (1575.42MHz), L1 GLONASS (1597.1-1609.5MHz), E1 Galileo (1575.42MHz), and B1 BeiDou (1561.098MHz) bands, ensuring precise positioning.