WSJTX(1)

NAME
wsjtx, jt9 - Weak signal communications program.

SYNOPSIS

wsjtx [OPTIONS]

DESCRIPTION

wsjtx is a weak signal communications program supporting several operating modes: JT65, JT9, JT4 and WSPR (wsjtx version 1 supported JT9 only).

WSJT-X home page
    http://www.physics.princeton.edu/pulsar/K1JT/wsjtx.html

WSJT-X User’s Guide
    http://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-3.1.0.html

An alternative JT65 decoder executable kvasd for i386 Ubuntu is available at http://www.physics.princeton.edu/pulsar/K1JT/kvasd . This decoder is not open-source, is not included in the wsjtx package, and is not required for JT65 decoding.

OPTIONS

-r, --rig-name[=RIGNAME]
    Enable multiple instances of the wsjtx(1) application to run concurrently. Each RIGNAME must be unique. One instance may use no RIGNAME. If this option is not supplied then only one instance of wsjtx(1) may be run at any time.

-v, --version
    Display the application version.

-h,--help
    Display usage information.

--test-mode
    When this option is provided all writable files will be placed in a special test location (~/.qttest). This option is only for application testing and is not designed for normal operations. Use with caution.

FILES

Most of the following files are in a directory path containing the directory name WSJT-X[ - RIGNAME] which indicates the value of the command line option --rig-name=RIGNAME to indicate multiple instances of wsjtx running concurrently. All writable files listed below are therefore unique to each concurrent instance of wsjtx. If the --rig-name command line option is not supplied or the RIGNAME argument is not supplied then the directory paths below will have the directory WSJT-X.

~/.config/WSJT-X[ - RIGNAME].ini
    This file stores the application configuration settings.

~/.local/share/WSJT-X[ - RIGNAME]/ALL.txt
    ALL.txt contains a record of transmitted and received messages and other activity such as frequency or band changes.

~/.local/share/WSJT-X[ - RIGNAME]/save/
    Is the default location for saved .WAV files recorded by the application. The .WAV file save location may be changed in the applications settings dialog.

~/.local/share/WSJT-X[ - RIGNAME]/save/samples/
    Sample .WAV files supplied with the application are found in this directory, they may be played back in the application and are referred to in the user guide tutorial sections.

~/.local/share/WSJT-X[ -RIGNAME]/timer.out
    This is a diagnostic file that records decode performance profiling information.

~/.local/share/WSJT-X[ - RIGNAME]/cty.dat
    This file is not required as a version of it is embedded in the application, but if you wish an updated version can be placed here. If present that version will be used in preference to the embedded version.

~/.local/share/WSJT-X[ - RIGNAME]/wsjtx.log
    This is a plain text CSV record of logged QSOs.

~/.local/share/WSJT-X[ - RIGNAME]/wsjtx_log.adi
    This is a record of QSOs logged in the ADIF format which is suitable for import into many Ham Radio logging programs.

AUTHOR

Joe Taylor, K1JT.

COPYING

wsjtx is Copyright © 2001 - 2026 by Joseph H. Taylor, Jr., K1JT, with contributions from additional authors. WSJT-X is Open Source software, licensed under the GNU General Public License (GPLv3).

wsjtx includes the “Hamlib - Ham Radio Control Libraries” software which is licensed under the GNU Lesser General Public License (LGPL). Home page https://sourceforge.net/apps/mediawiki/hamlib, sources from https://sourceforge.net/p/hamlib/code/ci/master/tree/.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.