WSJT-X 2.3.1 released + WSJT-X 2.4.0 RC4 available for download.

The WSJT-X development team has announced two new releases of program WSJT-X: a General Availability (GA) release of version 2.3.1, and release candidate RC4 of version 2.4.0. Please read this announcement and relevant sections of the Release Notes carefully.

You can also download the packages from our SourceForge site:
It may take a short time for the SourceForge site to be updated.

GENERAL ADVICE FOR UPGRADING: If you are not currently interested in Q65 you should update to WSJT-X 2.3.1. If you wish to participate in testing and reporting feedback on Q65, you should upgrade to WSJT-X 2.4.0-rc4. Please remember that by using a release candidate you are joining a beta test group. This brings a responsibility to report your experiences on one of the relevant user forums.

WSJT-X is licensed under the terms of Version 3 of the GNU General Public License (GPL). Development of this software is a cooperative project to which many amateur radio operators have contributed. If you use our code, please have the courtesy to let us know about it. If you find bugs or make improvements to the code, please report them to us in a timely fashion.

The authors and Copyright holders of WSJT-X request that derivative works do not publish programs based on features in WSJT-X before those features are made available in a General Availability (GA) release of WSJT-X. We will cease making public Release Candidate (RC) pre-releases for testing and user early access purposes if this request is ignored.

We hope you will enjoy using this candidate release of WSJT-X 2.4.0 and exercising the new mode Q65. Please report on your Q65 experiences, successful and otherwise, on one of the WSJT forums. Bugs should be reported by following instructions found here in the User Guide:


		   Release: WSJT-X 2.3.1
		        Mar 26, 2021

WSJT-X 2.3.1  General Availability release  updates the User  Guide to
cover the  new modes FST4 and  FST4W along with sample  .WAV files and
decoding tutorials. This release also  repairs a number of defects and
regressions  discovered  since  the v2.3.0  release,  including  those

 - When  sending traffic  to a  multicast UDP  server ensure  that the
   local loop-back interface is used if no others are selected.

 - Repair  a defect  in instance  lock  file handling  that causes  an
   infinite loop on start up.

 - Invert the  PTT serial port  sharing default behaviour,  and enable
   sharing when non-Hamlib CAT control  is combined with direct serial
   port PTT control.

 - Allow  the FST4  and FST4W  decoders  to continue  after the  first
   successful decode when using negative  NB values to try multiple NB

 - Repair defects in auto-sequencing,  particularly with responding to
   a repeated final message. In general a double-click of the repeated
   message now does the right thing.

 - Repair a regression that had  inadvertently disabled EU VHF Contest
   mode when using the MSK144 mode.

 - Repair a defect  that could caused incorrect log  entry fields when
   using FT4 mode and a priori (AP) decoding.

 - Repair defects saving .WAV files for periods with decodes.

 - Offer a new scheme for adjusting macOS shared memory parameters.