SI-TEX MDA-6 High Power 5W SOTDMA Class B/SO AIS Transceiver w/Bluetooth, Wi-Fi, NMEA0183, NK2 Isolated USB Interface [MDA-6]MDA 6 High Power 5W SOTDMA Class B SO AIS Transceiver with Bluetooth, Wi Fi, NMEA0183, NK2 Isolated USB Interface The SI TEX MDA 6 delivers Class Alevel transmit priority, rapid update rates, and 5 watt SOTDMA transmissionmore than twice the power of standard Class B AIS units. Your vessel is detected earlier and at greater distances, even in demanding or congested waterways. The MDA 6 broadcasts continuous dynamic data, including SOG, COG, heading,