Achieve 8mm accuracy with the Unicore UM980. This 1408-channel, Tri-band RTK receiver tracks L1, L2, and L5 bands for superior performance in challenging environments.
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The SparkFun Triband GNSS RTK Breakout uses the UM980 module from Unicore Communications to deliver positioning data with exceptional accuracy. How accurate? When an RTK solution is reached, this board knows its X, Y, and Z location within roughly the width of a fingernail (~8mm horizontal and 15mm vertical). Whether you are building autonomous agricultural robots, surveying drones, or high-precision 5G timing networks, this breakout provides the centimetre-level data you need.
Based on the advanced Nebulas IV™ chip, the UM980 is a 1408-channel device that simultaneously tracks all major global navigation systems—GPS, GLONASS, Galileo, Beidou, QZSS, and SBAS—across three frequency bands (L1, L2, and L5/E6).
The UM980 is a versatile powerhouse capable of operating as either a Rover or a Base Station:
To ensure a secure connection to your external antenna, we have included a robust SMA connector. For data communication, the UM980 relies exclusively on Serial UART (I2C is not supported on this module). We have made accessing these serial ports easy via three distinct methods:
| USB-C | Connected via an onboard CH340 for plug-and-play evaluation with a PC. |
| Locking JST | A 4-pin locking JST connector for secure wire-to-board integration. |
| BlueSMiRF Header | A dedicated header designed to mate with SparkFun Bluetooth modems for wireless data transmission. |
*Items marked with * are only supported by specific firmware.
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