What is new in the WSJT-X 2.4 version?

November

2021

12:30

трансивер

12 November 2021 12:30

After the release of version 2.3, which offered new slow digital modes of FST4 and FST4W for the ranges of medium and long waves, version 2.4 with broadband Q65 modulation for VHF ranges, mainly microwaves and EME.

Issue 2.4.0 dated 24 May 2021

General Availability version 2.4.0 added features for the new Q65 mode and fixed bugs found in 2.3.1GA and 2.4.0 rc4. The final release of the program includes the following improvements and bug fixes:

Under MS Windows Wsjt-X is now supplied with the version of the Hamlib 2.4 library. This should correct errors by installing the updated version of the Hamlib library.
The deficiency of decoding their call sign and backlight is eliminated when the callsigns are decoded with a common root
The correct disconnection of the averaging of Q65 messages was implemented and transferred as an option in the menu
Reagression with lost time prints in the All.txt file in FSK144 mode has been eliminated.
The deficiency of choosing a working frequency associated with a combination of the current range and type of work has been eliminated.
WSPR The jumping range mode now generates the tuning signal for the range before the transmission (apparently for automatic tuners - approx. Trans.)
The old disadvantage with memory settings of radiation power settings is eliminated.
Added great flexibility for entering the callsigns in the DX Call field. The initial and final gaps are acceptable, but ignored.

Improvements in version 2.4.0 RC4 dated March 26, 2021

This candidate for issuing eliminates errors and rollbacks noticed in versions 2.3.0 and 2.4.0 RC3.

The problem with the display of Q65 synchronization curves for subspecies Q65-120X and Q65-300X has been eliminated.
Audio frequencies and decoded messages for the last 100 Q65 decodes are now stored. Successive double-clicks on the waterfall will search within the list for the frequency at which the click was made in an interval of plus or minus 10 Hz, reconstruct the DXcall field from among the most recent decodes in that area, and attempt to decode it at that frequency with full "q3" sensitivity.
New recommendations are used for Q65: mode = mfsk, subspecies = Q65.
If the "Single Decode" is not selected, then the Q65 decoding from accumulated average signal, even after receiving decoding at the selected one frequency of RX FreQ, is viewed.
For the data that are read from the .WAV files, the waterfall is now displayed on the starting time of UTC (extracted from the file name) instead of the current time.
Protection from the boundary errors caused by unusual installations of the Wide Graph.
Fixed a problem when working in FT4 "Split" mode. Thanks JG1APX.

Improvements in version 2.4.0 RC3 dated March 15, 2021

This graduation candidate eliminates errors and rollbacks found in versions 2.4.0 RC1 and 2.3.1 GA.

In Q65 mode, two synchronization curves are now displayed: orange for the current sequence and red for accumulated and averaged.
Fixed behavior "Save decoded".
Fixed a mistake in which the program was emergency completed the work in wide graphics mode and the lower frequency equal to 0.
The program no longer completes the program when closing the “Settings” window.
The program no longer resets TxFreq to 700 or 1000 Hz when entering and exiting Q65 mode. Instead, it highlights the TxFreq transmission frequency with a red background color when the frequency should be 700 Hz but is not.
The program displays a warning if the competition mode is enabled simultaneously with the Q65 view.
Many changes are made to the user's manual, which is in-and-based Q65 regime.
The regression has been eliminated, which led to the impossibility of starting a new QSO after interruption of the previous QSO.

Improvements in version 2.4.0 RC2 of March 6, 2021

WSJT-X 2.4.0 adds functionality for the digital type Q65, uses a more optimal decoder, eliminates defects and regression found in the RC1 release.

Added examples of WAV files with Q65 records.
Correction of a defect leading to the emergency completion of the program under MacOS.
Elimination of the emergency completion of the program in JT4 mode
Improved processing of the sequence of radio exchanges during QSO: the reception report is recorded.
Improved user interface translation
Added option "Call 1st" in Q65 mode.
The averaging of Q65 messages has been improved, in which the first 4 sequences are averaged linearly, and the next 4 is exponentially, with subsequent 4 sequences of the same duration
I improved the Q65 simulator (signals) to generate files of files compatible with deprivation of messages, thanks to Charlie G3WDG
Added an option of Q65 simulation to create plain sound forms, thanks to Charlie G3WDG.
Improven the suppression of whistles in the Q65 decoder.
Empty messages are removed when decoding Q65.
Automatic TX signal is added to a small interval in the widest Q65 mode to ensure the transmitter signal in the passage strip, thanks to Charlie G3WDG.
Improved assessment of signal/noise ratio in Q65.
The depth of decoding is fast/normal/deep now identical in Q65.
The outdated ISCAT digital mode is removed.

Improvements in version 2.4.0 RC1 dated February 3 2021

This release offers a new digital look for the Q65. It is based on the capabilities of the QRA64 mode, provides a wide character alphabet, low bit rate, excellent performance when used for EME (Earth-Moon-Earth) and microwave bands, and with extremely low propagation of radio waves through ionospheric scatter and similar on VHF bands. The Q65 digital mode carries the same 77-bit payload as the popular FT-8, MSK144, FT4 and FST4 digital modes for QSOs. Also, the Q65 mode offers a choice of different period lengths (from 15 seconds to 5 minutes) and inter-tone intervals (up to 32 times the base distance), designed to adjust the sensitivity to the desired one, and to apply different frequency expansion characteristics of the channels. The Wide Graph display is a highly sensitive spectrum-locked tool capable of detecting signals below the waterfall visibility level. The new Wide Graph mode with synchronization combined with the understanding mode based on previous a priori data (AP), sums and averages signals from previous reception periods - which greatly expands the possibilities for searching for extremely weak signals and shows itself better than previous modes in similar situations.

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