ubx-cfg

Introduction

These pages document various aspects of the u-blox M10 that are relevant to the speed sailing community.

Developers of devices such the the ESP-GPS (or similar) may find some of this information useful.

UBX Config

• Fundamentals
  • Satellites - constellations + filters
  • Logging Rates - max rates + accuracy
  • Suggestions - constellations + rates
• Performance
  • High Logging Rates - CPU + baud rates
  • Signal Quality - power savings and LNA
  • Solution Quality - models + filters
  • Motion GPS - hardware + configuration
• Troubleshooting
  • Noisy Data - “balanced” power mode
  • Dropped Frames - CPU bandwidth limit
  • Timestamp Variations - local clock drift
  • Slow Acquisition - related to flash?

UBX Testing

• Motion GPS
  • Power Mode - “balanced” vs “full power”
  • Static Testing - 5 Hz vs 10 Hz
• Generic UBX
  • Fundamentals - constellations + rates
• ESP GPS
  • ESP-GPS - constellations + rates
  • Static Testing - optimal configuration

UBX Outputs

• UBX-NAV-PVT - Essential
• UBX-NAV-SAT - C/N₀
• UBX-NAV-DOP - HDOP
• UBX-NAV-VELNED - 3D speed

References

Technical Documentation

• MAX-M10 Product summary
• MAX-M10M-00B Data sheet
• MAX-M10M-00B Integration manual
• u-blox M10 ROM 5.00 Release Notes
• u-blox M10 SPG 5.30 Interface description
• u-blox M9 SPG 4.04 Interface description
• u-blox M8 Receiver description

Articles

• 5 tips to enhance position accuracy in standard precision GNSS receivers - u-blox, 30 Jan 2026

Tools

• GNSS View by QZSS

This site is open source. Improve this page.