
SCX-21 GPS COMPASS
The Furuno SCX-21 is a multi-GNSS satellite compass that provides superior directional accuracy even in challenging sea conditions. It provides reliable performance, especially in complex ship installations and environments with rating obstacles.

Key Features
Dual GNSS Antenna Structure
The SCX-21, with its dual antenna structure, provides ±1° static heading accuracy. This ensures stable navigation systems and accurate vessel heading.
GNSS-Based Multi-Directional Data Generation
It produces not only direction data but also pitch, roll, heave, ROT, SOG, and COG data. A wide range of motion and position data can be obtained with a single device.
Compact and Lightweight Design
The SCX-21 can be easily installed in small spaces, weighing approximately 1 kg. This makes it suitable for use even on boats with limited space.
Compatibility with Radar and Autopilots
Heading data ensures stable radar images. It also integrates with autopilot systems like NAVpilot to provide more stable directional control.
Easy Integration with NMEA 0183 Output
It can be easily connected to existing navigation and communication systems thanks to its standard NMEA 0183 interface.
Technical Specifications
Frequency – 1575.42 MHz (GPS, Galileo, QZSS, SBAS) / 1602.5625 MHz (GLONASS)
Number of antennas – 2 GNSS antennas
Heading accuracy – ±1.0° (static), ±0.5° (dynamic)
Tracking speed – Maximum 45°/s
Settling time – Approximately 60 seconds
Location accuracy – GPS: ~5 m / MSAS: ~4 m / WAAS: ~3 m (2 drms, HDOP < 4)
Supported GNSS – GPS, GLONASS, Galileo, QZSS, SBAS
Data outputs – Heading, ROT, COG, SOG, pitch, roll, heave, temperature, pressure
Interface – 3 × NMEA0183 TX, 2 × RX, 1 × PPS, RS-485
Operating voltage – 12–24 V DC
Power consumption – 0.1 – 0.2 A
Operating temperature – -25°C to +55°C
Storage temperature – -30°C to +70°C
Waterproof – IP56
Weight – Approximately 1 kg
