
As of May 2018, the latest WSJT version is WSJT10. This backwards-incompatibility includes JT64A, such that the preview release of JT64A in WSJT7 cannot communicate with the stable release of JT64A in WSJT8. As of version 8.0 (referred to as colloquially as WSJT8) the available modes changed completely such that WSJT8 now offers 5 different modes (JTMS, ISCAT, JT64A, JT8, and Echo) - none of which are back-compatible with WSJT7 or earlier releases. WSJT versions up through 7.06 r1933 (referred to as colloquially as WSJT7) and earlier were aggregations of previous versions, and as such WSJT7 contained 16 different modes (FSK441, JT6M, JT65 variants A - C, JT2, JT4 variants A - G, WSPR, and a preview of JT64A).

Currently, the program is written in Python and C, with several utilities written in Fortran. Although Joe Taylor was the original developer (and still acts as maintainer), several programmers are currently involved in writing the software. This licensing change required substantial rewrites and took several months to complete. Since 2005, the software has been released as open source software under the GNU General Public License.

Communication modes have been both added and removed from the software over the course of its development. I have also tried VSPE splitting of the IC-7600 com Port (with other IC-7600 CAT control selections in each program), but ultimately end up with one of the programs no longer connected.WSJT was originally released in 2001 and has undergone several major revisions. Seems like OmniRig will not allow two different programs to control the same radio? If you try and reconfigure, WSJT-X hangs up. WSJT-X pops up Rig Control Error Screen, Do you want to reconfigure the radio interface? Start Log4OM, OmniRig Settings screen pops up, hit OK WSJT-X works fine, full control of IC-7600, including PTT transmit

Start WSJT-X (configured in the radio control tab for "OmniRig Rig1") Assumption that both Log4OM (v1.21) and WSJT-X (v1.4) can simultaneously work through OmniRig control Here is an example of what I'm talking about: Yes, I am able to use JTAlert, as described on page 172 of the user guide - do I have a different version of the user guide than you are referring to? Logging a QSO is not the issue, it's simultaneous radio control from Log4OM and a JT65-HF.
