Simrad MX521A D/GPS Antenna

This product is discontinued.

The MX521A is a precision D/GPS positioning solution in a smart antenna.

  • Better than 1m (RMS) DGPS position accuracy and better than 5m (RMS) GPS accuracy
  • NMEA 0183 version 3.0 interface
  • IMO type approved (as part of an MX display system) including RAIM (receiver autonomous integrity monitoring)
  • Design for easy upgrade of existing MX420 installations to latest IMO standards

    The IMO approved MX521A smart antenna delivers position accuracy better than 1 meter in DGPS mode, and better than 5 meter accuracy in standard GPS mode. The MX521A can be configured to use several space based augmentations systems (SBAS) such as EGNOS, WAAS and MSAS in areas outside of DGPS beacon coverage


    Mounting [S,F,B] 1 inch - 14 TPI Pole Mount
    Operating Temperature -30°C to +70°C
    Operating Temperature Stored -40°C to +85°C
    Diameter [mm] 182
    Product Height 102 mm \ 4 in
    Product Weight 0.5 kg \ 1.1 lbs


    Power Consumption < 3 W
    Power Supply (Supply Voltage) 10.5 to 32 VDC vDC
    Reverse Polarity Protection Yes


    Baud Rates 4800 (default), 9600, 19200
    Correction I/O Protocol RTCM SC-104
    Data I/O Protocol NMEA 0183 V3.0
    Serial Ports 2 duplex NMEA 0183 Ports

    GPS Navigation

    Frequency Range 283.5 to 325 kHz
    GPS Receiver Channels 12
    Horizontal Accuracy <2 m="" 2D-RMS="">
    Pulse Log Emulation 61 dB @ f ° +/- 400 Hz
    Receiver Type L1, C/A code, 1.575 GHz Frequency
    Satellite Reacquisition


    When you choose a product from Navico Commercial, you are automatically protected by our service and support program.

    Our Service & Support program aims to provide the best possible experience, even on occasions when support or replacement is required.

    Choosing to have your system installed by a Certified Dealer adds 2 Year Onboard Support and 24 Hour Replacement to your support package. This is available only on systems installed by a Certified Dealer and valued at over US$2500.

    Learn more about Service & Support


    Navico guarantees its products against defects in materials or workmanship according to the terms and conditions detailed within the Navico Warranty Policy. Customers can obtain warranty support by contacting: