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SI-TEX MDA-4 Fixed-Mount VHF Radio with AIS, NMEA 2000
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SI-TEX MDA-4 Fixed-Mount VHF Radio with AIS, NMEA 2000

  • Includes Speaker Mic with Controls, Dual-Channel AIS Receiver, Loudhailer
  • Voltage: 13.8 VDC, Current Draw: 6.0 A (Transmit) @ 25 W / 1.5 A (Receive)
  • Includes Dual Watch, Tri-Watch and Programmable Scanning Modes
  • Item #: 
    Model #: 


    Shipping Weight: 
    3.55 Lbs.
    List Price: 
    Reg. Price:
    Sale Price:
    Status:  null In Stock

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    SI-TEX MDA-4 Fixed-Mount VHF Radio with AIS, NMEA 2000


    • Rugged VHF-FM radio with built-in AIS receiver and NMEA 2000® connectivity built to military specifications (MIL-STD-801G) for years of use on recreational and commercial vessels
    • Large LCD display provides AIS data including ship's call sign and MMSI, bearing, distance, SOG and COG
    • Integrated dual-channel AIS receiver allows you to monitor position of nearby AIS-equipped vessels
    • Operates on all currently available USA, Canada and International VHF marine channels
    • Dual-watch, tri-watch and programmable scanning modes
      • Tri-watch monitors current channel, emergency channel 16, and calling channel 9
    • 25 Watt loudhailer / foghorn with 8 selectable modes and listen-back capability
    • DISTRESS call button on base station automatically transmits MMSI and position
    • Dedicated Channel 16 / 9 buttons on radio's front panel and fist-mic for instant access to emergency channel
    • NMEA 2000® connectivity links MDA-4 radio with integrated onboard system devices
    • Optional GNSS 66-channel smart GPS antenna (sold separately)
    • 2-year limited warranty

    Package Includes:

    • MDA-4 VHF transceiver with handheld FistMic microphone
    • Bracket mount
    • Microphone mounting clip


    • Color (transceiver and microphone): Black
    • Transmitter Output Power: 25 Watts or 1.0 Watt (user selectable)
    • Receiver Frequency Range: 156.050 to 162.025 MHz
    • Usable Radio Channels: All available US, CAN and INT channels
    • NMEA Networking: NMEA 0183 and NMEA 2000
    • Nominal Voltage: 13.8 Volt DC
    • Current Draw: <6 Amps (max. transmit) / 1.5 Amps (receive)
    • Operating Temperature Range: -15°C to +55°C
    • Ingress Protection: IPX7 (protected against water immersion for 30 minutes at depth up to 1 m)
    • Mount: Bracket (included) or flush mount
    • Dimensions: 8" L x 4.25" W x 2.25" H

    For further details see Operating Instructions


    SI-TEX Metadata VHF / AIS Antenna Splitter
    Item #: 259097
  • Applications: All AIS Transponders and Receivers
  • Function: Enables AIS to Share a Single Antenna with VHF and AM/FM Radio
  • Power: 12 Volt or 24 Volt DC, Waterproof: IPX7 Rated
  •  Include
    Reg. Price

    Sale Price

    Model #:
    SI-TEX External GPS Antenna
    Item #: 259098
  • Designed for SI-TEX MDA-1
  • Cable Length: 10 Meters / 33 Feet
  •  Include
    Reg. Price

    Sale Price

    Model #:

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