Freefly Public
Comment on page


Freefly's RTK GPS modules provide a drop-in replacement for existing PX4 GPS modules, and integrate the cutting-edge U-Blox multi-band ZED-F9P GPS module to provide you with centimeter-level positional accuracy.


  • RTK: (Real Time Kinematics) Provides cm-level GPS accuracy
  • Base Station: Ground GPS, provides GPS correction data
  • Rover: Aircraft GPS, uses base station correction data to calculate heading
  • Survey-in: Process in which base station calculates its position

Benefits of Freefly RTK GPS

  • RTK provides cm-level positional accuracy
    • Improves sensor data, and flight performance
  • The multi-band GPS and antenna translate in higher satellite count, fast lock, even in non-RTK mode

Included in the Box

  • 1x GPS modules with multi-band antenna
  • USB C to A cable (Type C right-angle to Type A (3 m / 9.84 ft long)
  • Magnetic quick-mount, with fasteners for base station module
  • Screws to mount onto Alta X