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Si-Tex MDA-6 5W SOTDMA Class B AIS Transceiver with Bluetooth and Wi-Fi

Manufacturer

Si-Tex

<h3>About SI-TEX Marine Electronics</h3><p><strong>SI-TEX Marine Electronics</strong> has been a trusted name on the water for over 50 years, building a reputation among commercial captains, charter operators, sportfishermen, and serious recreational boaters for delivering rugged, reliable, and straightforward marine electronics. Founded in 1975 and headquartered in Riverhead, New York, SI-TEX has remained committed to a single mission throughout its history: provide mariners with the features they actually need, the durability they expect, and the value they appreciate.</p><p>What sets SI-TEX apart from larger, more corporate brands is the depth of experience behind every product. President Ted Bodtmann has been shaping marine electronics since 1967, and the leadership team collectively brings decades of hands-on industry knowledge to product design and customer support. That institutional knowledge translates directly into electronics that work the way seasoned mariners expect them to — straightforwardly, dependably, and without unnecessary complexity.</p><h3>A Full Spectrum of Marine Electronics</h3><p>SI-TEX offers one of the most complete lineups in the marine electronics segment. Their product catalog spans professional-grade <a href="/11288-si-tex-simrad-radars-autopilots-200957">radar systems and autopilots</a>, high-performance echo sounders and CHIRP sonar, precision GPS navigation and chartplotting systems, heading sensors, VHF communications, AIS transponders, and more. Whether you&apos;re outfitting a hardworking commercial vessel, a sportfishing yacht, an inshore skiff, or a long-range cruiser, there is an SI-TEX solution engineered for the task.</p><p>Their SVS Series chartplotter/sounder combos — including the SVS-880 and SVS-760 — are especially popular with commercial fishermen and smaller vessel operators, offering high-resolution color displays, powerful sonar capabilities, and intuitive operation in a compact, rugged package. The NavPro series takes things further, pairing large touchscreen MFDs with built-in Wi-Fi radar compatibility, CHIRP sonar, and Navionics or C-MAP charting integration. For vessel control, the SP-120 autopilot series supports hydraulic, mechanical, and dash-drive steering systems across a range of vessel sizes, and even offers virtual feedback to eliminate the need for a rudder sensor on some installations.</p><p>SI-TEX also offers a comprehensive range of accessories and connectivity hardware — including <a href="/11288-si-tex-diagnostic-scan-tool-cable-18035">cable adapters and interface solutions</a> — designed to keep their electronics integrated and upgradeable as technology evolves. These accessories make it easier to expand an existing SI-TEX system or transition between product generations without starting from scratch.</p><h3>Backed by a 2-Year Warranty and U.S.-Based Support</h3><p>Every SI-TEX product is backed by a <strong>2-Year Warranty</strong> and supported by an experienced service team based in Long Island, New York. For mariners who spend serious time on the water, that combination of product durability and accessible support is not a minor detail — it&apos;s a core reason professionals keep coming back to the brand. SI-TEX also distributes Koden products to the commercial marine market, extending their reach to even more demanding commercial and offshore applications.</p><p>From a single transducer cable to a fully integrated radar, chartplotter, and autopilot system, SI-TEX delivers the tools serious mariners rely on — built tough, priced fairly, and backed by people who know the sea.</p>

Part Number

MDA-6
06/03/2036 12:18 PM
Sale Price

$870.27

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Product Details

The Si-Tex MDA-6 is a high-performance Class B/SO AIS transceiver that delivers Class A-level transmit priority with 5-watt SOTDMA transmission power—more than twice the output of standard Class B AIS units. This enhanced power ensures your vessel is detected earlier and at greater distances, even in demanding or congested waterways where traditional Class B transceivers struggle to maintain network priority.

The MDA-6 broadcasts continuous dynamic data including Speed Over Ground (SOG), Course Over Ground (COG), heading, and hazard reports, providing surrounding vessels with a clearer, more accurate picture of your movements. SOTDMA (Self-Organized Time-Division Multiple Access) technology guarantees your vessel will always transmit and be seen in heavily congested commercial harbors and ports where standard Class B units don't have network priority.

Key Features:

  • 5-watt SOTDMA transmission with Class A-level priority for maximum visibility
  • Built-in Bluetooth and 802.11 b/g/n Wi-Fi for wireless connectivity to mobile devices
  • NMEA 0183 data port and NMEA 2000 (NK2) connectivity for seamless bridge system integration
  • Isolated USB interface for secure data transfer and programming
  • Integrated GPS and GLONASS satellite navigation receiver
  • IP67-rated waterproof housing protects against water, dust, and vibration
  • Compact modular design allows flexible installation on any vessel
  • Automatic VDR (Voyage Data Recorder) function saves voyage data
  • Built-in zero-loss VHF antenna splitter—no second antenna needed

The MDA-6 operates on 9.6-31.2 VDC with low 220mA average power consumption and functions reliably in temperatures from -25°C to +55°C. This fully certified AIS transceiver meets FCC, USCG, and Industry Canada requirements, making it ideal for recreational boaters and commercial operators who demand superior performance and reliability in challenging marine environments.

Transaction was easy, product shipped on time.

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