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WSJT-X implements communication protocols or modes called FT8, FT4, 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. WSJT-X works on Windows Linux and MacOS. This is the official WSJT-X distribuition site.

WSJT-X - Weak Signal Communication, by K1JT - offers specific digital protocols optimized for EME (moonbounce), meteor scatter, and ionospheric scatter, at VHF/UHF, as well as for LF, MF, and HF propagation. Support digital modes like FT8 FT4 JT65. The program can decode fraction-of-a-second signals reflected from ionized meteor trails and steady signals more than 10 dB below the audible threshold. WSJT-X incorporates nearly all popular capabilities of programs WSJT and WSPR, while adding comprehensive rig control and many other features. Open-source, download latest version for Windows, Linux, Mac OS X.

SimJT is a simulation program. It generates audio-frequency JT65 and CW signals in a background of gaussian white noise, with user-specified signal-to-noise ratio.

WSJT-X and MAP65, open-source amateur radio programs, facilitate weak-signal digital communication. WSJT-X covers VHF/UHF to HF, decoding subthreshold signals. MAP65 optimizes for VHF/UHF EME with JT65. Free and GNU GPL licensed, WSJT-X is on Windows, Linux, and OS X, while MAP65 is Windows-only, supporting SDR hardware.

WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Stations with internet access can automatically upload their reception reports to a central db

JT65 is a digital protocol intended for Amateur Radio communication with extremely weak signals. It was designed to optimize Earth-Moon-Earth (EME) contacts on the VHF bands, and conforms efficiently to the established standards and procedures for such QSOs.

Digital protocol intended for Amateur Radio communication with extremely weak signals. Joe Taylor, K1JT

"Software uses four-tone frequency-shift keying for meteor scatter. WSJT stands for ""Weak Signal communications, by K1JT"", and plans call for the program to include more than one communication mode."

QST article on QSJT software for VHF meteor-scatter vommunication

The purpose of this web site is to promote JT6M as a mode of communication on both 6M and 4M band and guide users through setting up and using JT6M effectively. Optimised for 6 metre band Meteor Scatter, JT6M allows you to make meteor scatter contacts easily. JT6M is part of the WSJT suite of digital weak signal software applications developed by Joe Taylor, K1JT

Recommended Procedures for Random Digital EME

MAP65, a panoramic, polarization-matching receiver for JT65 by K1JT

MAP65 works together with the Linrad software. The Linrad/MAP65 combination implements a wideband, polarization-matching receiver for the JT65B protocol.

Quest for Optimum Coding and Modulation Schemes for EME Joe Taylor, K1JT Florence EME conference 2008

WSJT New Software for VHF Meteor-Scatter Communication QST Article December 2001 by K1JT

Official PDF guide to WSJT-X FT8 SuperFox operating mode published on June 2024 by Joe Taylor, K1JT