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Compact white dome satellite compass with four GNSS antennas

FURUNO

FURUNO SCX20 Satellite Compass NMEA 2000 marine electronic

SKU CH-XX37-4BJVB

Provides precise heading, position and motion data for marine electronics via quad GNSS antennas with 1.0 degree accuracy

  • Product typeAccessories
  • Accurate heading for radar and sonar backed by 1.0 degree precision
  • Reliable performance in challenging conditions backed by quad GNSS antenna design
  • Fast rate-of-turn data backed by 10 degrees per second output
  • Precise speed reference backed by 0.02 knot accuracy
  • Easy installation with reduced multi-path interference backed by compact form factor

Satellite Compass for Marine Electronics

The Furuno SCX20 Satellite Compass delivers precise heading data to every device on your NMEA 2000 network. Its quad-antenna design maintains reliable performance even when satellite visibility is limited. This accessory is built for vessels that depend on accurate orientation for radar, sonar and autopilot systems.

NMEA 2000 Interface Limits

The compass transmits heading, position, speed, roll, pitch, heave, rotation rate, time, air temperature and pressure over a single NMEA 2000 backbone. Data refresh rates and sentence priority follow the standard, so bandwidth is shared with every other connected sensor. Installations with heavy traffic from multiple MFDs or high-rate AIS may see delayed updates on lower-priority PGNs.

1.0 Degree Heading Accuracy

A certified 1.0 degree heading accuracy and 0.02 knot speed accuracy decide whether this compass meets your navigation requirements. If your autopilot or radar overlay demands tighter tolerances, this model will not satisfy them. Buyers who need sub-degree precision for survey work or dynamic positioning should look elsewhere.

How it compares

Measured against everything we stock in Boat Audio & Electronics, at today’s prices. Recalculated every night.

Price $1,115.99
Pricier than about 94% of the 312 comparable items (median $69.49).

Specifications

Product
Product typeAccessories

Questions about this item

How do I choose the right SCX20 for my NMEA 2000 network?

The SCX20 is a single-model satellite compass with NMEA 2000 output; there are no alternative versions or capacities to select.

What does 1.0 degree heading accuracy mean when the compass is installed on my boat?

It means the heading output stays within one degree of true heading, improving radar overlay, sonar imaging and autopilot course-keeping.

What does the NMEA 2000 interface cap in practice?

NMEA 2000 carries the SCX20's heading, position, speed, roll, pitch, heave, ROT, air temperature and pressure data to compatible displays and autopilots.

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