Item #883292

SI-TEX Metadata Class B/SO AIS Transceiver with External GPS Antenna Package - MDA-5

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Image of : SI-TEX Metadata Class B/SO AIS Transceiver with External GPS Antenna Package - MDA-5 SI-TEX Metadata Class B/SO AIS Transceiver with External GPS Antenna Package - MDA-5 Item # 883292


This powerful Class B/SO AIS transceiver will make your boat "visible" to other vessels with AIS over long distances and in challenging conditions with its 5-watt transmission power. The SI-TEX Metadata MDA-5 module transmits at more than twice the power of traditional Class B AIS transceivers to put you on more screens for increased safety.


  • World's most sophisticated, fully certified 5-Watt SOTDMA Class B AIS Module on the market
  • Transmits position and other dynamic data such as Speed Over Ground, Course Over Ground and Heading on a more frequent, "Class A-Type" priority basis
    • Provides surrounding vessels with more accurate position information
    • Especially important for boats traveling at high speeds and/or in congested areas
  • Higher output power means your vessel will be seen at longer ranges by other vessels and via AIS websites
  • SOTDMA Class A Priority means your vessel will always transmit and be seen in congested harbors where traditional Class B units don't have network priority
  • Transmitter can be silenced (see definition below)
  • Automatic VDR Function (Voyage Data Recorder)
  • Integrated zero loss VHF antenna splitter - no second antenna needed
  • Built-In 802.11 b/g/n Long Range WIFI allows unit to send AIS and Position data to any WIFI connected devices
  • NMEA-0183 data port, NMEA-2000 & USB intelligent connectivity to all bridge systems
  • Built-In GPS & GLONASS satellite navigation receiver
  • Waterproof certified to IPX7
  • Dual receivers decode all DSC & AIS messages, including MOB & SART
  • Ultra-power efficient
  • IEC-62287-2, FCC and USCG certified
  • 2-Year warranty package

SOTDMA stands for Self-Organized Time-Division Multiple Access and means as AIS info comes into the receiver, it organizes the data into time slots that are time-shared with a TDMA receiver. It transmits at 5W at high power, twice the power of traditional Class B AIS Transceivers — so your boat can be "seen" over long distances and in the most challenging conditions.


  • Transmitter output power: 5W
  • VHF Antenna connector SO-239 UHF
  • GPS Antenna connector TNC
  • NMEA-2000 connector: Micro-C
  • Frequency range: 156.025 - 162.025 Mhz
  • Input voltage: 9.6 - 31.2V DC
  • Current draw: 220mA average power consumption
  • Operating temperature range: -25° C to +55° C
  • Ingress protection: IPx7
  • Dimensions (transceiver): 6.8" W x 5.0" H x 2.0" D
  • Weight 0.8 lbs

In the Box:

  • Class B/SO AIS Transceiver
  • Commercial grade external GPS antenna with coax cable
  • Power & data interface cable
  • VHF radio connection cable
  • Product information DVD, with ProAis2 software for programming & troubleshooting
  • User manual & quick start guide
  • Mounting hardware

Part Numbers for SI-TEX Metadata Class B/SO AIS Transceiver with External GPS Antenna Package - MDA-5

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How do you silence the transmitter?

Asked by: EHWard3
Buy a 3rd party toggle switch, mount externally and connect to the green (-) and orange (+) wires on the harness. See p 23 of the manual. 
Answered by: Steve
Date published: 2023-11-22
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