AIS Class B [xyz-ips snippet=”browselog”] Overview AIS Class B Transponders AIS Class B transponders were pioneered to offer AIS benefits to smaller vessels. AIS Class B devices offer lower power, fewer receivers and different display options to a AIS Class A transceivers. Coupled with cost savings, AIS Class B devices are ideal for mariners with small pleasure craft or fishing boats. read more … AIS CLASS B NEW GENERATION SERIES em-trak B900 SERIES The B900 series are a range of standard and high transmit power (2W CSTDMA and 5W SOTDMA) AIS Class B transceivers. Small and lightweight, they deliver the very best AIS receive and transmit performance so you see more AIS information and targets at maximum range – all achieved with the least power consumption. With built-in intelligent connectivity, integrated next generation GPS and the unique FLEXI-FIX™ bracket system, safe and secure installation could not be easier. Key features Certified AIS Class B – 2W CSTDMA / 5W SOTDMA Extended receiver performance: -111dBm @ 20% PER Integrated Next Generation GPS Receiver & Antenna – 72 channels Systems supported – GPS, GLONASS, BeiDou, Galileo (two of any combination, three including GPS, Galileo) GPS Internal/external antenna – Internal or optional external antenna GPS Time to first fix from cold start – 26s Waterproof & Ruggedized Small & Lightweight Ultra Low Power Consumption NMEA0183 & 2000 FLEXI-FIT™ Bracket System – easy installation Ultimate Connectivity – WiFi, Bluetooth & USB Options Integrated high performance VHF antenna splitter – 0dB loss em-trak B92x STANDARD SERIES – 2W CSTDMA B921 model – standard (read more …) B922 model – plus WiFi & Bluetooth (read more …) B923 model – plus integrated VHF antenna splitter (read more …) B924 model – plus WiFi & Bluetooth, integrated VHF antenna splitter (read more …) em-trak B95x HIGH PERFORMANCE SERIES – 5W SOTDMA B951 model – standard (read more …) B952 model – plus WiFi & Bluetooth (read more …) B953 model – plus integrated VHF antenna splitter (read more …) B954 model – plus WiFi & Bluetooth, integrated VHF antenna splitter (read more …) Summary – AIS Class B Series 900 Full Range em-trak B200 SERIES The B200 is a high transmit power (5W & 12W) priority AIS Class B with internal emergency battery power back-up that enables continuous operation for up to 12 hours and emergency transmit only operation for up to 120 hours, providing critical safety in the event of vessel power loss. Waterproof and ruggedized to operate continuously and reliably for years in the most extreme marine environments; combined with WiFi and Bluetooth functionality for quick and easy connection to any display system or navigation app. Key features Certified Class B AIS Transceiver – High Transmit Power Waterproof & Ruggedized – IPx6 & IPx7 Internal 120hr Back-up Battery Plug & Play Connectivity (WiFi & Bluetooth) NMEA0183 & 2000 B200 model – standard (read more …) Summary – AIS Class B Series 200 Full Range AIS CLASS A TRANSPONDERS em-trak AIS Class A Transponder A200 The world’s most advanced AIS Class A transceiver. It has dual SOLAS and Inland Waterway global certification. The em-trak AIS Class A Transponder A200 sets new standards of performance, functionality and reliability. read more … em-trak AIS Class B Transponder B400 The em-trak AIS Class B Transponder B400 is an internationally certified AIS Class B SOTDMA transceiver. The em-trak Class B B400 AIS Transponder is a high powered (5W) ruggedized AIS transceiver ideally suited for professional mariners who demand superior performance, functionality and reliability. read more … em-trak AIS Class B – Small Vessel Tracker – I100 The em-trak AIS I100 Small Vessel Tracker is a fully integrated Small Vessel Tracker Class B/CS compatible vessel tracking AIS transceiver. The I100 Small Vessel Tracker has both GPS and VHF antennas integrated within a security sealed, IP68 waterproof ruggedized shell. Power can be supplied from the vessel or independently from its own internal rechargeable battery which gives up to 7 days of continuous operation between charges. read more … AIS Class B Transponders (Continue) The Automatic Identification System (AIS) is an automatic tracking system that uses an AIS transponder on ships and is used by vessel traffic services (VTS). When satellites are used to detect AIS signatures, the term Satellite-AIS (S-AIS) is used. AIS transponder information supplements marine radar, which continues to be the primary method of collision avoidance for water transport. Information provided by an AIS transponder, such as unique identification, position, course, and speed, can be displayed on a screen or an ECDIS. AIS is intended to assist a vessel’s watchstanding officers and allow maritime authorities to track and monitor vessel movements. AIS integrates a standardized VHF transceiver with a positioning system such as a GPS receiver, with other electronic navigation sensors, such as a gyrocompass or rate of turn indicator. Vessels fitted with AIS transceivers can be tracked by AIS base stations located along coast lines or, when out of range of terrestrial networks, through a growing number of satellites that are fitted with special AIS receivers which are capable of deconflicting a large number of signatures. The International Maritime Organization’s International Convention for the Safety of Life at Sea requires AIS Class A to be fitted aboard international voyaging ships with 300 or more gross tonnage (GT), and all passenger ships regardless of size. For a variety of reasons, ships can turn off their AIS Class A transponders. AIS Class B transponders were pioneered to offer AIS benefits to smaller vessels. AIS Class B devices offer lower power, fewer receivers and different display options to a AIS Class A transceivers. Coupled with cost savings, AIS Class B devices are ideal for mariners with small pleasure craft or fishing boats. Class B transceivers offer small vessels all the AIS features of Class A devices, but without some of the requirements needed for larger vessels. Class B devices offer: Lower power transmission output, there are two types: Class B CSTDMA 2-watt: These transponders are the traditional Class B units, have a transmit range of 5-7 miles and use the carrier sense system for getting a transmission slot. Class B SOTDMA 5-watt: This is a new type of Class B transponder. These units transmit with 5 watts of power and typical transmit 10-15 miles. These use the same self-organized slot management system as the commercial Class A transponders. Multiple outputs to different displays Same number of transmitters and receivers as Class A, but used differently One transmitter must be multiplexed to the VHF DSC radio Active GPS antenna can be incorporated in the device Not interfaced to a compass, so heading information rarely transmitted AIS Class B units are designed for smaller vessels with fewer power options, less space and fewer antennas than a large commercial vessel. The lower transmission power means their range is significantly less than a Class A device, but this is compensated by the anticipated stopping distance in an emergency situation of the vessel compared to a large commercial vessel. Also, the devices are a lot smaller than a Class A device, ensuring they can be installed quickly and integrated easily to many different displays. As smaller vessels rarely include a second antenna, most Class B devices need to use an antenna splitter to regulate use of the VHF antenna between the VHF radio and AIS device.