Release: WSJT-X 2.1.0-rc6
June 2, 2019
————————-
Changes and bug fixes since WSJT-X 2.1.0-rc5:
IMPORTANT CHANGES TO THE FT4 PROTOCOL *** NOT BACKWARD COMPATIBLE ***
– T/R sequence length increased from 6.0 to 7.5 seconds
– Symbol rate decreased from 23.4375 to 20.8333 baud
– Signal bandwidth decreased from 90 Hz to 80 Hz
OTHER FT4 IMPROVEMENTS
– Allowable time offsets -1.0 < DT < +1.0 s
– Tx4 message with RRR now allowed, except in contest messages
– Audio frequency is now sent to PSK Reporter
– Add a third decoding pass
– Add ordered statistics decoding
– Improved sensitivity: threshold S/N is now -17.5 dB
– Improved S/N calculation
– In FT4 mode, Shift+F11/F12 moves Tx freq by +/- 100 Hz
OTHER IMPROVEMENTS
– Improvements to accessibility
– Updates to the User Guide (not yet complete, however)
– New user option: “Calling CQ forces Call 1st”
– N1MM Logger+ now uses the standard WSJT-X UDP messages
– OK/Cancel buttons on Log QSO window maintain fixed positions
– Put EU VHF contest serial numbers into the ADIF SRX and STX fields
BUG FIXES
– Fix generation of Tx5 message when one callsign is nonstandard
– Fix a bug that prevented use on macOS
– Fix a bug that caused mode switch from FT4 to FT8
– Fix a bug that caused FT4 to do WSPR-style band hopping
– Fix a bug that caused a Fortran bounds error
Release candidate WSJT-X 2.1.0-rc6 will be available for beta-testing
through July 21, 2019. It will be inoperable during the ARRL June VHF
QSO Party (June 8-10) or ARRL Field Day (June 22-23). It will
permanently cease to function after July 21, 2019. If all goes
according to plan, by that time there will be a General
Availability (GA) release of WSJT-X 2.1.0.
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