Amateur Radio Weak Signal Operating

WSJT-X implements amateur radio communication protocols or "modes" called FT4, 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.