WSJT-X implements communication protocols or “modes” called FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, and WSPR, as well as one called Echo for detecting and measuring your own radio signals reflected from the Moon. These modes were all designed for making reliable, confirmed QSOs under extreme weak-signal conditions, and originally developed by Joe Tayor, K1JT,  an American astrophysicist and Nobel Prize in Physics laureate.

WSJT-X-main screen
WSJT-X Main screen – FT8 Contact
Spectrum Display – Many stations in SSB bandwidth
Auto-generates log info added to WXJT-X log file, can be uploaded to other logging apps.
Setting Options


An essential support program that extends WSJT-X. Adds audio and visual spotting alerts for various conditions (e.g., wanted US State or DXCC), and adds automatic logging to several logging programs.

  • Website:
  • Platforms: Windows
  • Works with: WXJT-X, DXLab DXKeeper, HRD Log, Log4OM ACLog, others
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