Unicore UM980 USB Dongle

Precision positioning often demands bulky, power-hungry equipment that ties you to a single setup. The Unicore UM980 USB Dongle solves this by packing survey-grade GNSS RTK capability into a compact USB stick. Plug it into any compatible host—laptop, embedded system, or mobile device—and instantly access centimeter-level accuracy for mapping, autonomous navigation, and timing applications.

Who is it for

This receiver is built for professionals who need reliable, high-precision location data without the complexity of traditional GNSS receivers. Surveyors, precision agriculture operators, robotics developers, and unmanned vehicle integrators will appreciate its plug-and-play simplicity and robust performance. It's equally suited for field data collection, machine control, and network timing.

Main features

• Multi-constellation, multi-frequency GNSS engine: Tracks GPS, GLONASS, BDS, Galileo, QZSS, and SBAS across L1, L2, L5, and more.
• 1408 channels for superior signal tracking and interference resilience.
• RTK positioning accuracy: 8 mm + 1 ppm horizontal, 15 mm + 1 ppm vertical.
• Up to 20 Hz update rate for dynamic applications.
• USB 2.0 Type-A interface with SMA female antenna connector.
• Wide operating temperature range: -40°C to +85°C.
• Low power consumption: approximately 1 W via USB.
• Supports NMEA-0183 and RTCM 3.x protocols for seamless integration.

Specifications

• GNSS Chipset: Unicore UM980
• Constellations: GPS, GLONASS, BDS, Galileo, QZSS, SBAS
• Frequencies: GPS/QZSS L1/L2/L5, GLONASS L1/L2, BDS B1I/B2I/B3I/B1C/B2a, Galileo E1/E5a/E5b, SBAS L1
• Channels: 1408
• RTK Accuracy: H: 8 mm + 1 ppm RMS; V: 15 mm + 1 ppm RMS
• Standalone Accuracy: 1.5 m RMS
• Velocity Accuracy: 0.03 m/s RMS
• Timing Accuracy: 20 ns RMS
• Update Rate: Up to 20 Hz
• Cold Start: < 30 s; Warm Start: < 10 s; Reacquisition: < 1 s
• Data Protocols: NMEA-0183, RTCM 3.x
• Interface: USB 2.0 Type-A
• Antenna Connector: SMA Female
• Operating Voltage: 5 V DC (via USB)
• Operating Temperature: -40°C to +85°C
• OS Compatibility: Windows, Linux, Android
• Power Consumption: ~1 W

Tips

Pair the UM980 with a quality multi-frequency GNSS antenna to fully exploit its RTK capabilities. For best results in challenging environments, ensure the antenna has a clear sky view. The USB interface makes it easy to integrate with your existing software stack—many open-source tools support NMEA and RTCM out of the box.