{"product_id":"em-trak-b921-class-b-ais-transceiver-2w-cstdma-part-430-0001","title":"em-trak B921 Class B AIS Transceiver, 2W CSTDMA – Part 430-0001","description":"\u003cp\u003e\u003cstrong\u003eB921 Class B AIS Transceiver - 2W CSTDMA\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e**As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at the time of purchase. A copy of the MMSI registration or FCC Ship Station License is required along with the vessel master or owner's signature on the completed programming form.**\u003c\/p\u003e\u003cp\u003e\u003ca href=\"http:\/\/productimageserver.com\/banners\/ClassB.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eClick here to download form\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThe B921 is a 2W CSTDMA Class B AIS transceiver, delivering em-trak's advanced performance and reliability through next-gen technology. Small and durable, this trusted transceiver processes all AIS transmissions in real-time, even at the range limit, so you always have the complete picture and the time to respond.\u003c\/p\u003e\u003cp\u003eem-trak's intelligent connectivity means the B921 can be connected to any chart-plotter and comes equipped with integrated GPS technology and best-in-class, ultra-low power consumption. Installation is also simplified with our unique FLEXI-FIT bracket system to have you up and running in no time at all.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCertified AIS Class B  2W CSTDMA\u003c\/li\u003e\n\u003cli\u003eGlobal certification - USCG \/ FCC \/ Canada \/ Europe\u003c\/li\u003e\n\u003cli\u003eSRT-AIS Transceiver Engine for superlative proven performance\u003c\/li\u003e\n\u003cli\u003eFLEXI-FIT bracket system for easy, convenient, and secure installation\u003c\/li\u003e\n\u003cli\u003eInternal high-performance GPS receiver and antenna (external antenna optional)\u003c\/li\u003e\n\u003cli\u003eWater, pressure spray, and damp proof (IPx6, IPx7 certified)\u003c\/li\u003e\n\u003cli\u003eProtected from vibration, shock, and extreme temperatures\u003c\/li\u003e\n\u003cli\u003eSmall and lightweight\u003c\/li\u003e\n\u003cli\u003eUltra-low power consumption  best in class\u003c\/li\u003e\n\u003cli\u003eNMEA 0183  NMEA 2000\u003c\/li\u003e\n\u003cli\u003eAutomated health and performance monitoring\u003c\/li\u003e\n\u003cli\u003eSilent mode (transmit-off) function\u003c\/li\u003e\n\u003cli\u003eEnhanced RF screening to protect against electromagnetic interference\u003c\/li\u003e\n\u003cli\u003eBuilt-in power surge protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePhysical  Environmental Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize (H x W x D): 150 x 115 x 45mm\u003c\/li\u003e\n\u003cli\u003eWeight: 375kg\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -25C to +55C\u003c\/li\u003e\n\u003cli\u003eStorage temperature: -25C to +70C\u003c\/li\u003e\n\u003cli\u003eIngress protection: IPx6 and IPx7\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eElectrical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSupply voltage: 12V or 24V DC\u003c\/li\u003e\n\u003cli\u003eSupply voltage range: 9.6V - 31.2V DC\u003c\/li\u003e\n\u003cli\u003eAverage current (at 12V): 135mA\u003c\/li\u003e\n\u003cli\u003ePeak current: 2A\u003c\/li\u003e\n\u003cli\u003eAverage power consumption (at 12V): 1.6W\u003c\/li\u003e\n\u003cli\u003eGalvanic isolation: NMEA 0183, NMEA 2000, VHF antenna port\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConnectors:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVHF antenna: SO-239\u003c\/li\u003e\n\u003cli\u003eGNSS: TNC\u003c\/li\u003e\n\u003cli\u003ePower: 12-way circular multipole\u003c\/li\u003e\n\u003cli\u003eNMEA 2000: 5-way Micro-C connector\u003c\/li\u003e\n\u003cli\u003eUSB: USB Micro-B\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eData Interfaces:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNMEA 0183: 2 x bi-directional ports\u003c\/li\u003e\n\u003cli\u003eNMEA 2000: NMEA 2000 Ed 3.101, LEN=1\u003c\/li\u003e\n\u003cli\u003eUSB: PC virtual com port for NMEA 0183 data\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStandards Compliance:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAIS standards: IEC 62287-1 Ed. 3, ITU-R M.1371.5\u003c\/li\u003e\n\u003cli\u003eProduct safety standards: EN60950-1 2006 +A11:2009 +A1:2010 +A12:2011 +A2:2013 EN62311:2008\u003c\/li\u003e\n\u003cli\u003eEnvironmental standards: IEC 60945 Ed. 4\u003c\/li\u003e\n\u003cli\u003eSerial data interface standards: IEC 61162-1 Ed 5.0, IEC 61162-2 Ed 1.0\u003c\/li\u003e\n\u003cli\u003eNMEA 2000: NMEA 2000 Ed 3.101\u003c\/li\u003e\n\u003cli\u003eGNSS performance standards: IEC 61108-1 Ed 2.0, IEC 61108-02 Ed 1.0\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGNSS:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSystems supported: GPS, GLONASS, BeiDou, Galileo (two of any combination, three including GPS, Galileo)\u003c\/li\u003e\n\u003cli\u003eChannels: 72\u003c\/li\u003e\n\u003cli\u003eInternal\/external antenna: Internal or optional external antenna\u003c\/li\u003e\n\u003cli\u003eTime to first fix from the cold start: 26s\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVHF Transceiver:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVDL access scheme: CSTDMA\u003c\/li\u003e\n\u003cli\u003eOperating frequency: 156.025MHz - 162.025MHz\u003c\/li\u003e\n\u003cli\u003eChannel bandwidth: 25kHz\u003c\/li\u003e\n\u003cli\u003eReceivers\/transmitters: 2 x receivers, 1 x transmitter\u003c\/li\u003e\n\u003cli\u003eAIS receiver sensitivity (20% PER): -111dBm\u003c\/li\u003e\n\u003cli\u003eAIS transmitter power: 2W (+33dBm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eUser Interface:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIndicators: Power, transmit timeout, error, silent mode\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIn the Box:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 x AIS transceiver\u003c\/li\u003e\n\u003cli\u003e1 x Power and data cable (2M)\u003c\/li\u003e\n\u003cli\u003e1 x FLEXI-FIT mounting bracket\u003c\/li\u003e\n\u003cli\u003eComplete with screws  optional fixing tape\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eThis product may not be returned to the original point of purchase.  Please contact the manufacturer directly with any issues or concerns.\u003c\/strong\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003e\u003cstrong\u003eem-trak B921 Class B AIS Transceiver, 2W CSTDMA\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe em-trak B921 is a compact, durable Class B AIS transceiver designed for boat owners and marine operators who need dependable vessel tracking and situational awareness. Its 2W CSTDMA technology processes AIS transmissions in real time, including signals near the range limit, helping connected navigation equipment display the information needed to assess surrounding traffic.\u003c\/p\u003e\u003cp\u003eBuilt-in GPS technology and intelligent connectivity allow the B921 to connect with compatible chart plotters through NMEA 0183 or NMEA 2000 interfaces. The FLEXI-FIT mounting bracket simplifies installation, while ultra-low power consumption supports efficient operation aboard vessels using 12V or 24V DC electrical systems. The unit also includes silent mode for transmit-off operation, automated health and performance monitoring, electromagnetic interference screening, and built-in power surge protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFCC programming requirement:\u003c\/strong\u003e The FCC requires all units sold in the United States to be programmed by a qualified technician. A completed programming form, a copy of the MMSI registration or FCC Ship Station License, and the vessel master or owner's signature are required. \u003ca href=\"http:\/\/productimageserver.com\/banners\/ClassB.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eDownload the programming form\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertified Class B AIS:\u003c\/strong\u003e 2W CSTDMA transceiver technology processes AIS transmissions in real time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated GNSS:\u003c\/strong\u003e Internal GPS receiver and antenna support GPS, GLONASS, BeiDou, and Galileo systems; an optional external antenna is supported.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine connectivity:\u003c\/strong\u003e NMEA 0183, NMEA 2000, and USB interfaces connect the transceiver with compatible navigation and PC equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation-ready design:\u003c\/strong\u003e FLEXI-FIT mounting bracket provides a convenient and secure installation method.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e IPX6 and IPX7 protection, plus resistance to vibration, shock, and extreme temperatures, supports marine installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient operation:\u003c\/strong\u003e Ultra-low power consumption and 12V or 24V DC compatibility suit a range of vessel electrical systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e em-trak\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 430-0001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAIS class:\u003c\/strong\u003e Class B CSTDMA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAIS transmitter power:\u003c\/strong\u003e 2W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower input:\u003c\/strong\u003e 12V or 24V DC; allowable range 9.6V–31.2V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterfaces:\u003c\/strong\u003e Two bi-directional NMEA 0183 ports, NMEA 2000, and USB Micro-B virtual COM port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVHF antenna connector:\u003c\/strong\u003e SO-239\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGNSS connector:\u003c\/strong\u003e TNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress protection:\u003c\/strong\u003e IPX6 and IPX7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -13°F to 131°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage temperature:\u003c\/strong\u003e -13°F to 158°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e AIS transceiver, 6.6-foot power and data cable, FLEXI-FIT mounting bracket, screws, and optional fixing tape\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the em-trak B921 Class B AIS Transceiver for compact, connected AIS performance and straightforward installation aboard your vessel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eCalifornia Proposition 65 Warning\u003c\/h3\u003e\u003cp\u003e[APPROVED PROP 65 WARNING REQUIRED]\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSEO Meta Description:\u003c\/strong\u003e Shop the em-trak B921 Class B AIS transceiver with 2W CSTDMA, integrated GNSS, NMEA connectivity, and efficient marine installation.\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"em-trak","offers":[{"title":"Default Title","offer_id":44934067486809,"sku":"98701","price":655.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98701XL.jpg?v=1789754171","url":"https:\/\/www.marinepartsonly.com\/products\/em-trak-b921-class-b-ais-transceiver-2w-cstdma-part-430-0001","provider":"Marine Parts Only","version":"1.0","type":"link"}