Regular price $2,256.52 $0.00

Amazing Multi-Gnss Satellite Compass - Reliable accuracy in the most challenging situations

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Brand New Highly Accurate Satellite Compass

NMEA 0183 Network Configuration

The SCX-21 enhances the performance of on-board equipment such as Radar, Fish Finders, Sonar, and Autopilots. Accurate heading information empowers your NAVpilot to keep a better course, saving time, fuel, and money on every voyage; meanwhile, precise pitch, roll, and heave information stabilizes the display for many Furuno Fish Finders and Sonars, allowing for an accurate presentation even in the roughest of seas.

Quad-antenna design for extreme accuracy

Utilising four separate GNSS Antennas for the ultimate in responsiveness, the SCX-21 sets a new standard for reliable and accurate heading for all of your marine electronics. Traditionally, a Satellite Compass calculates heading using one baseline between two antennas; the SCX-21 four antennas can calculate heading information using any one of the six baselines drawn between the four antennas. The unprecedented quad-antenna design of the SCX-21 makes it capable of calculating extremely accurate heading, pitch, roll, and heave information. It is the perfect heading solution for complex vessel installations where the view of satellites may sometimes be obstructed.

Radar Plotter

True echo trails are available when the SCX-21 is connected to your Furuno Radar, helping to determine own ships movement as well as the movement of other vessels. Accurate speed and heading data ensures that target trails are displayed smoothly and accurately, without the jagged, zig-zag appearance common to compasses with a higher degree of deviation.

Heave Compensation for Furuno Fish Finders

Even in heavy seas, accurate heave compensation from SCX-21 enables Fish Finders such as the FCV-1150 or NavNet TZtouch/TZtouch2/TZtouch3 to show you an unwavering presentation of the seabed, without the undulations caused by sea conditions.


Accurate pitch and roll information allows Furuno Sonar systems to display a steady image on the screen, even in foul weather.

  • Frequency: 1575.42 MHz (GPS/Galileo/QZSS/SBAS)
     1602.5625 MHz (GLONASS)
  • Tracking code:C/A (GPS/QZSS/SBAS), E1B (Galileo), L1OF (GLONASS)
  • Heading Accuracy:Heading/Roll/Pitch: 1.0° rms (static) 0.5° rms (dynamic)
  • Follow-up: 45°/sec
  • Settling time: 60 seconds approx.
  • Position Accuracy: GPS: 5m approx. (2 drms, HDOP < 4)
    MSAS: 4m approx. (2 drms, HDOP < 4)
    WAAS: 3m approx. (2 drms, HDOP < 4)
  • Interface: 1 Port NMEA2000
    Input: 059392/904, 060160/416/928, 061184, 065240, 126208/720,130847
    Output: 059392/904, 060928, 061184, 065280,126208/464/720/992/993/ 996/998, 127250/251/252/257/258, 129025/026/029/538/539/ 540,130310/312/314/316/577/578/816/817/818/819/822/823, 130833/834/842/843/845/846/847
  • Temperature: 25°C to +55°C (storage: -30°C to 70°C)
  • Waterproofing: IP56
  • Power Supply: 12-24 VDC: 0.2-0.1 A (4 LEN @ 9 VDC




Operators Manual


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