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Calibrating frequency of Airspy HF+ Dual Port/Discovery and Airspy R2/Mini

Calibrating frequency of Airspy HF+ (Dual Port / Discovery) and Airspy (R2 / Mini)


  • Windows 7, 8, 10

Airspy HF+ (Dual Port / Discovery)

  • Get the hfplus_ppb.exe in the Firmware distribution kit available at the end of this web page
  • Open the command console (run cmd.exe (via PowerShell if needed))
  • You can retrieve the currently memorized offset value by hfplus_ppb.exe without the argument
  • Set the frequency offset value from (presumably) -2500 to 2500 as hfplus_ppb.exe 1000
  • Roughly estimated offset: 12.2Hz/10MHz (1.22ppm) for the full range of the frequency offset value (-2500? to 2500)
  • Note well: upgrading the firmware resets the offset value -- The flash.bat provided explicitly saves the value before the upgrade and restores it after the upgrading ends

Airspy R2/Mini

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