{"product_id":"si-tex-mda-5-5w-sotdma-class-b-ais-transceiver-with-built-in-antenna-splitter-wi-fi","title":"SI-TEX MDA-5 5W SOTDMA Class B AIS Transceiver with Built-In Antenna Splitter \u0026 Wi-Fi","description":"\u003ch1\u003eSI-TEX MDA-5 Hi-Power 5W SOTDMA Class B AIS Transceiver with Built-In Antenna Splitter \u0026amp; Long Range Wi-Fi\u003c\/h1\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\nThe SI-TEX MDA-5 is the world's most sophisticated fully certified 5-Watt SOTDMA Class B AIS transceiver available, engineered for mariners who demand maximum visibility and reliability on the water. With its elevated 5-watt transmitter output, your vessel broadcasts at significantly longer ranges than standard Class B units, ensuring you're seen by other ships and tracked on AIS websites even in the most congested commercial harbors and ports. SOTDMA Class A network priorities mean you always get a transmission slot - no more being squeezed out in busy shipping lanes where traditional Class B units lose priority.\n\u003c\/p\u003e\n\u003cp\u003e\nThe MDA-5 integrates a zero-loss VHF antenna splitter directly into the unit, so you won't need to install a second antenna. Built-in 802.11 b\/g\/n long-range Wi-Fi streams AIS and position data wirelessly to any connected device, while a hi-resolution 72-channel GPS and GLONASS receiver ensures pinpoint positioning. Whether you're outfitting a recreational vessel or a commercial installation, the MDA-5 delivers a feature set that sets the benchmark for Class B AIS.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-Watt SOTDMA Transmitter:\u003c\/strong\u003e Higher output power means your vessel is visible at longer ranges by nearby ships and AIS tracking websites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOTDMA Class A Priorities:\u003c\/strong\u003e Guarantees transmission slots in congested commercial harbors and ports where standard Class B units lose network priority.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Zero-Loss VHF Antenna Splitter:\u003c\/strong\u003e No second antenna required - share your existing VHF antenna with no signal loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In 802.11 b\/g\/n Long Range Wi-Fi:\u003c\/strong\u003e Streams AIS and GPS position data wirelessly to any Wi-Fi connected device onboard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72-Channel GPS \u0026amp; GLONASS Receiver:\u003c\/strong\u003e Hi-resolution dual-constellation satellite navigation for accurate and reliable positioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNMEA-0183 \u0026amp; NMEA-2000 Connectivity:\u003c\/strong\u003e Integrates seamlessly with all standard marine bridge systems and chartplotters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanic Isolated USB Connection:\u003c\/strong\u003e Protects the transponder and connected PCs from harmful electrical interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic VDR Function:\u003c\/strong\u003e Voyage Data Recorder automatically saves the previous 30 days of voyage data - no setup required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Receivers:\u003c\/strong\u003e Decodes all DSC and AIS messages, including MOB (Man Overboard) and SART emergency signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIPX7 Waterproof Certified:\u003c\/strong\u003e Built to withstand marine environments and submersion conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e IEC-62287-2, FCC, USCG certified, and Industry Canada approved for legal use in U.S. and Canadian waters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Year Warranty:\u003c\/strong\u003e Backed by SI-TEX's standard two-year manufacturer warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eShips free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSI-TEX MDA-5 SOTDMA Class B AIS Transceiver\u003c\/li\u003e\n\u003cli\u003eInternal GPS Antenna\u003c\/li\u003e\n\u003cli\u003eExternal GPS Antenna (for commercial vessel installations)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy You'll Love It\u003c\/h2\u003e\n\u003cp\u003e\nThe MDA-5 represents the pinnacle of Class B AIS technology, trusted by commercial and recreational mariners who refuse to compromise on safety and visibility. Its SOTDMA transmission protocol - traditionally reserved for Class A commercial units - means you stay visible even in the busiest shipping channels where lives depend on it. The built-in antenna splitter and long-range Wi-Fi eliminate the need for additional hardware, reducing installation complexity and cost. Certified by the FCC, USCG, and Industry Canada, you can cruise with confidence knowing the MDA-5 meets the highest regulatory standards. With automatic voyage data recording, dual MOB and SART decoding, and ultra-power-efficient operation, this is the AIS transceiver built for serious mariners who demand the best from their electronics.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cdiv class=\"custom-product-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eView Product Specs\u003c\/strong\u003e\u003c\/summary\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Power\u003c\/th\u003e\n\u003ctd\u003e5 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAIS Class\u003c\/th\u003e\n\u003ctd\u003eClass B SOTDMA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGPS\/GNSS\u003c\/th\u003e\n\u003ctd\u003e72-Channel GPS \u0026amp; GLONASS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWi-Fi\u003c\/th\u003e\n\u003ctd\u003e802.11 b\/g\/n Long Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eData Ports\u003c\/th\u003e\n\u003ctd\u003eNMEA-0183, NMEA-2000, Galvanic Isolated USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAntenna Splitter\u003c\/th\u003e\n\u003ctd\u003eIntegrated zero-loss VHF antenna splitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVDR Storage\u003c\/th\u003e\n\u003ctd\u003e30 days of voyage data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWaterproof Rating\u003c\/th\u003e\n\u003ctd\u003eIPX7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertifications\u003c\/th\u003e\n\u003ctd\u003eIEC-62287-2, FCC, USCG, Industry Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eManuals \u0026amp; Guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/1775154968MDA-5_Class_B_AIS_Features___Specifications.pdf?v=1792535056\" target=\"_blank\" title=\"Product Specifications\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/172286757316215279861539612497MDA5_Class_B_Tranceiver_Splitter_Installation_and_operation_manual.pdf?v=1792535061\" target=\"_blank\" title=\"Product Manual\"\u003eProduct Manual\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cdiv class=\"custom-product-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between SOTDMA Class B and standard Class B AIS?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eStandard Class B AIS uses CSTDMA (Carrier Sense Time Division Multiple Access), which means it waits for a free slot before transmitting - in crowded harbors, it can get pushed out entirely. SOTDMA (Self-Organized TDMA) is the same protocol used by Class A commercial units. It reserves transmission slots in advance, guaranteeing your vessel broadcasts even in the most congested waterways. The MDA-5's SOTDMA operation makes it far more reliable in busy commercial ports than traditional Class B units.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to install a separate VHF antenna for the MDA-5?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eNo. The MDA-5 features an integrated zero-loss VHF antenna splitter, allowing it to share your existing VHF antenna with no signal degradation. This simplifies installation considerably and eliminates the cost of purchasing and mounting a dedicated AIS antenna.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does the built-in Wi-Fi work?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eThe MDA-5's built-in 802.11 b\/g\/n long-range Wi-Fi creates a wireless connection that streams AIS target data and your vessel's GPS position to any Wi-Fi enabled device onboard - including tablets, phones, and laptops running navigation apps. No additional hardware or wiring is needed for wireless data distribution.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the MDA-5 legal for use in US and Canadian waters?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eYes. The MDA-5 is fully certified by the FCC, USCG, and Industry Canada, making it approved for legal operation on US and Canadian waters. It also meets the international IEC-62287-2 standard for Class B AIS transponders.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the Automatic VDR Function?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eThe Voyage Data Recorder (VDR) function automatically logs and stores the previous 30 days of your vessel's voyage data - including position, speed, and course - without any manual action required. This data can be invaluable for reviewing routes, incident reconstruction, or compliance purposes.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Si-Tex","offers":[{"title":"Default Title","offer_id":57019071660337,"sku":"MDA-5","price":1395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/172286752016214502391539269145PIC_2.png?v=1792535065","url":"https:\/\/omahasportsandgames.com\/products\/si-tex-mda-5-5w-sotdma-class-b-ais-transceiver-with-built-in-antenna-splitter-wi-fi","provider":"Omaha Sports \u0026 Games","version":"1.0","type":"link"}