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1248 lines
47 KiB
Plaintext
1248 lines
47 KiB
Plaintext
__ __ ______ _____ ________ __ __
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| \ _ | \ / \ | \| \ | \ | \
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| $$ / \ | $$| $$$$$$\ \$$$$$ \$$$$$$$$ | $$ | $$
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| $$/ $\| $$| $$___\$$ | $$ | $$ ______ \$$\/ $$
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| $$ $$$\ $$ \$$ \ __ | $$ | $$| \ >$$ $$
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| $$ $$\$$\$$ _\$$$$$$\| \ | $$ | $$ \$$$$$$/ $$$$\
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| $$$$ \$$$$| \__| $$| $$__| $$ | $$ | $$ \$$\
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| $$$ \$$$ \$$ $$ \$$ $$ | $$ | $$ | $$
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\$$ \$$ \$$$$$$ \$$$$$$ \$$ \$$ \$$
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Copyright 2001 - 2020 by Joe Taylor, K1JT.
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Release: WSJT-X 2.3.0-rc1
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Sept 28, 2020
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-------------------------
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WSJT-X 2.3.0 is a program upgrade offering two new modes designed
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especially for use on the LF and MF bands. FST4 is for 2-way QSOs,
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and FST4W is for WSPR-like transmissions. Both modes offer a range of
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options for T/R sequence lengths and threshold decoding sensitivities
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extending well into the -40 dB range. Early tests have shown these
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modes frequently spanning intercontinental distances on the 2200 m and
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630 m bands. Further details and operating hints can be found in the
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"Quick-Start Guide to FST4 and FST4W", posted on the WSJT web site:
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https://physics.princeton.edu/pulsar/k1jt/FST4_Quick_Start.pdf
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WSJT-X 2.3.0-rc1 is a beta-quality release candidate for a program
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upgrade that provides a number of new features, capabilities, and
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defect repairs. These include:
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- New modes FST4 and FST4W targeting LF and MF bands.
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- Improved noise baseline discovery for more reliable SNR estimates.
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- On the waterfall and 2D spectrum a tool-tip shows the frequency
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offset under the mouse pointer.
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- The *On Dx Echo* Doppler compensation method has been modified in
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response to feedback from Users. Basic functionality is unchanged.
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See the User Guide (Section 8.1) for more information.
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- Improved user_hardware script or program initiation for WSPR
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band-hopping mode.
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- Decoded QSO mode message display narrowed to make appended
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information easier to view without scrolling the window.
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- Option to record the propagation mode in logged QSO records.
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- ADIF v3.1.1 compliance.
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- Option to connect to PSKReporter using TCP/IP for those with very
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poor Internet connections.
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- Major rewrite of the PSKReporter interface to improve efficiency
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and reduce traffic levels.
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- Removal of the Tab 2 generated messages.
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- Accessibility improvements to the UI.
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- Tweaked decode speed options for a better user experience with
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lower powered single-board computers like the Raspberry Pi.
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- Updates to UI translations in Spanish, Italian, Catalan, Chinese,
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Hong Kong Chinese, Danish, and Japanese.
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- Audio devices only enumerated when starting up and opening the
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"Settings->Audio" device lists.
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- Option to select the default audio device removed to minimize the
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likelihood of system sounds being transmitted.
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- Better handling of missing audio devices.
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- Improved and enhanced meta-data saved to .WAV files.
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- More reliable multi-instance support.
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- Included CTY.DAT file moved to installation share directory.
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- The bundled Hamlib library is updated to the latest available which
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fixes several regressions, defects, and adds new rig support.
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- Fixed some edge-case message packing and unpacking defects and
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ambiguities.
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- Fix a defect that allowed non-CQ messages to be replied to via the
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UDP Message Protocol.
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- Fix a long-standing defect with Tx start timing.
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- Repair a defect with style sheets when switching configurations.
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- Repair defects that made the astronomical data window an several
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main window controls unreadable when using the dark style sheet.
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- Repair a regression with setting WSPR transmitted power levels.
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- Repair a regression with newly created ADIF log file's header.
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- Many other defects repaired.
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Release: WSJT-X 2.2.2
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June 22, 2020
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---------------------
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WSJT-X v2.2.2 is a bug fix release, mainly to incorporate the new RAC
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section PE into the FT8/FT4/MSK144 Contest Mode for Field Day.
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- Stations intending to operate in Field Day (FD) are urged to
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upgrade to this release, without it you cannot set your section to
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PE, and of equal importance you cannot decode contest messages from
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stations who are operating from PE without this upgrade.
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- FT8 decoder speeded up in Normal and Fast modes. This change gives
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a speed of decoding closer to that of v2.1.2 without compromising
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the number of decodes. It is particularly targeted for slower
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single board computer users such as the Raspberry Pi Model 3 or
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similar.
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- Thanks to our user interface language translation contributors for
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many improvements to the translated strings.
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- The DX Grid field is now cleared automatically when the DX Call
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field is changed. Care should be taken to complete entry of a
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callsign before entering a grid square.
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Release: WSJT-X 2.2.1
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June 6, 2020
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---------------------
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WSJT-X v2.2.1 is a bug fix release that fixes regressions found in the
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prior v2.2.0 release. Here is a brief summary;
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- Incorporate a revised Hamlib version the address a regression in
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rig control of some rigs including the Yaesu FT-991 and FT-891.
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- Repair a defect in 6 character gridsquare lookup from the CALL3.TXT
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database, and improve "Lookup" button processing.
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- Repair a defect with selecting Wide Graph 2D spectrum types in
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translated UIs.
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- Repair a regression that blocked the Highlight Callsign UDP request
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from highlighting terms including a '+' character.
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- Repair a defect that caused hash code lookups of one's own call to
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fail after an extended period of inactivity, when operating with a
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non-standard callsign.
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- Repair a regression where occasional Highlight Callsign UDP
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requests with the 'Highlight last' parameter as true highlighted a
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match in a prior period. This fix include a performance improvement
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when processing any Highlight Callsign request with 'Highlight
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last' as true.
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- Include support for the Yaesu FT-920 when controlled by Ham Radio
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Deluxe. This change inadvertently missed the v2.2.0 GA release.
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- Correct a documentation issue with the UDP Message Protocol
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Status(1) message Special Operations Mode enumeration values ("WW
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DIGI added", Fox, and Hound renumbered). Thanks to Sam, W2JDB, for
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raising this issue.
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- Updated Catalan UI translation, tnx Xavi, EA3W.
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- Italian UI translation, tnx Marco, PY1ZRJ.
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- Updated Spanish UI translation, tnx C<>dric, EA4AC.
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Release: WSJT-X 2.2
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June 2, 2020
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-------------------
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WSJT-X 2.2 is a program upgrade that provides a number of new features
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and capabilities. Here is a brief summary; for further details see
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the notes for candidate releases 2.2.0-rc1, -rc2, and -rc3, below, and
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of course the updated WSJT-X 2.2 User Guide.
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- Significant improvements to the decoders for FT4, FT8, JT4, JT65,
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and WSPR.
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- New format for "EU VHF Contest" Tx2 and Tx3 messages
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When "EU VHF Contest" is selected, the Tx2 and Tx3 messages (those
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conveying signal report, serial number, and 6-character locator)
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now use hashcodes for both callsigns. This change is NOT backward
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compatible with earlier versions of _WSJT-X_, so all users of EU
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VHF Contest messages should be sure to upgrade to version 2.2.0.
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- Accessibility
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Keyboard shortcuts have been added as an aid to accessibility:
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Alt+R sets Tx4 message to RR73, Ctrl+R sets it to RRR.
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As an aid for partial color-blindness, the "inverted goal posts"
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marking Rx frequency on the Wide Graph's frequency scale are now
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rendered in a darker shade of green.
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- User Interface Translations have been enabled. Translations are
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now available for Catalan, Spanish, Japanese, Chinese, and Hong
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Kong Chinese. Additiional languages will follow, when available.
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Note that UI translation is automatic, based on your system primary
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language. If you do not want the WSJT-X UI translated to your local
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language then start WSJT-X with the '--language=en' command line
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option:
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wsjtx --language=en
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If you wish to contribute by authoring WSJT-X UI translations
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please join the new discussion group wsjtx-l10n@Groups.io
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(https://groups.io/g/wsjtx-l10n), where help from other translation
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authors and coordination with the development team is available.
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- Minor enhancements and bug fixes
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"Save None" now writes no .wav files to disk, even temporarily.
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An explicit entry for "WW Digi Contest" has been added to
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"Special operating activities" on the "Settings | Advanced" tab.
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Contest mode FT4 now always uses RR73 for the Tx4 message.
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The Status bar now displays the number of decodes found in the
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most recent Rx sequence.
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The "Highlight Callsign" UDP message has been enhanced to allow
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clearing of old highlighting for a specified callsign. Please note
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a recommended restriction on the use of this message in the
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documentation here: https://tinyurl.com/y85nc3tg
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- Hamlib - this library which we use for direct rig control has had
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many defect repairs and enhancements, we thank the contributors to
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that project for their work.
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Release: WSJT-X 2.2.0-rc3
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May 29, 2020
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-------------------------
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WSJT-X 2.2.0-rc3 is the third release candidate for WSJT-X 2.2.0.
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The most important differences from the -rc2 version are the
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correction of regressions in hamlib code that affected particular
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radios and PTT keying by means of DTR or RTS on a COM port.
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In addition, RC3 has the following enhancements and minor bug fixes:
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- Updates to Catalan translation of the UI (thanks to EA3W)
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- Spanish translation of the UI (EA3W)
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- Load language translations only when matching primary language
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- Minor corrections to User Guide
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- Increased FT8 sync threshold in "Normal" and "Fast" decoding
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- Corrected the code that restores the WideGraph, EchoGraph, and
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FastGraph windows to normal view after they have been minimized.
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- Don't allow restart with "ISCAT B" mode label unless VHF features
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are enabled.
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- Repair regression defect in WSPR power combo box items
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Release: WSJT-X 2.2.0-rc2
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May 25, 2020
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-------------------------
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WSJT-X 2.2.0-rc2 is a release candidate for WSJT-X 2.2.0. The
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following bugs present in the -rc1 version have been fixed:
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- Missing blank line between some decode sequences.
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- Improper functioning of "Start new period decodes at top".
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- Font selection caused crash on some macOS systems.
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- Mouse action in band selector box not right in some macOS systems.
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- Incorrect recall of Tx power setting in WSPR mode.
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- Many fixes to hamlib library and executables (rigctld, etc.).
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- Some regional settings did not allow WSJT-X to start.
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- Main window "looked like old Windows" in macOS.
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- Crash when "Ref Spec" is selected and no refspec.dat available.
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- Improper decoding of some FT4 messages with hashed "MyCall".
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- Crash after warning message about double-clicking in ISCAT mode.
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In addition, we have made the following improvements:
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- Updated some figures and text in User Guide.
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- Corrected some formatting issues in the pdf version of User Guide.
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- Added some new sample files.
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- Improved shape and position of "green goal post" in Wide Graph.
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- Significantly reduced the rate of false decodes in FT4 and FT8.
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- Allow FT4 to use NA VHF Contest message formats.
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- Hold Tx frequency no longer cleared when switching between modes.
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- Added capability for translations of the user interface into
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languages other than English. First working example (special
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thanks to Xavi Perez, EA3W!), is Catalan. Spanish will be next.
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- Performance improvements to decode highlighting via UDP messages.
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And finally:
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Increasing FT8 usage on the popular bands 40, 30, and 20m means that
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the default 3 kHz sub-bands are often wall-to-wall with signals.
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Overcrowding encourages some to turn on their amplifiers, which only
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makes things worse. We are trying to coordinate the suggested
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frequencies in WSJT-X with updated band plans being considered by
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IARU, ARRL, and other amateur radio societies.
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On a trial basis, and in response to numerous suggestions from around
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the world, we have added a second set of suggested dial frequencies
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for FT8 on three HF bands and also on 6 meters. The new suggested dial
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frequencies are 7.071, 10.133, 14.071, and 50.310 MHz. These
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frequencies will appear in your drop-down band-selector list after you
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go to the "Settings | Frequencies" tab, right-click on the frequency
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table, and select "Reset". Alternatively, you can add the new FT8
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frequencies manually.
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When the conventional FT8 sub-band on 6, 20, 30, or 40 m seems too
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full, please try moving your dial frequency down 3 kHz! Be aware that
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as currently implemented, WSJT-X will set your dial to the lowest
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frequency for the selected mode and band, when you switch bands.
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See the next section for a list of other program improvements since
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WSJT-X 2.1.2.
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Release: WSJT-X 2.2.0-rc1
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May 10, 2020
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-------------------------
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WSJT-X 2.2.0-rc1 is a beta-quality release candidate for a program
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upgrade that provides a number of new features and capabilities. These
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include:
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- Improvements to the decoders for five modes:
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FT4: Corrected bugs that prevented AP decoding and/or multi-pass
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decoding in some circumstances. The algorithm for AP
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decoding has been improved and extended.
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FT8: Decoding is now spread over three intervals. The first
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starts at t = 11.8 s into an Rx sequence and typically yields
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around 85% of the possible decodes for the sequence. You
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therefore see most decodes much earlier than before. A second
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processing step starts at 13.5 s, and the final one at 14.7 s.
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Overall decoding yield on crowded bands is improved by 10% or
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more. (Systems with receive latency greater than 0.2 s will see
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smaller improvements, but will still see many decodes earlier
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than before.)
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JT4: Formatting and display of Averaged and Deep Search decodes
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has been cleaned up and made consistent with other modes.
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Together with JT65 and QRA64, JT4 remains one of the digital
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modes widely for EME and other extreme weak-signal work on
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microwave bands.
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JT65: Many improvements for Averaged and Deep Search decodes and
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their display to the user. These improvements are particularly
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important for EME on VHF and UHF bands.
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WSPR: Significant improvements have been made to the WSPR
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decoder's sensitivity, its ability to cope with many signals in
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a crowded sub-band, and its rate of undetected false decodes.
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We now use up to three decoding passes. Passes 1 and 2 use
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noncoherent demodulation of single symbols and allow for
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frequency drifts up to ±4 Hz in a transmission. Pass 3 assumes
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no drift and does coherent block detection of up to three
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symbols. It also applies bit-by-bit normalization of the
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single-symbol bit metrics, a technique that has proven helpful
|
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for signals corrupted by artifacts of the subtraction of
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stronger signals and also for LF/MF signals heavily contaminated
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by lightning transients. With these improvements the number of
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decodes in a crowded WSPR sub-band typically increases by 10 to
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15%.
|
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- New format for "EU VHF Contest" Tx2 and Tx3 messages
|
||
|
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When "EU VHF Contest" is selected, the Tx2 and Tx3 messages
|
||
(those conveying signal report, serial number, and 6-character
|
||
locator) now use hashcodes for both callsigns. This change is
|
||
NOT backward compatible with earlier versions of _WSJT-X_, so
|
||
all users of EU VHF Contest messages should be sure to upgrade
|
||
to versiion 2.2.0.
|
||
|
||
- Accessibility
|
||
|
||
Keyboard shortcuts have been added as an aid to accessibility:
|
||
Alt+R sets Tx4 message to RR73, Ctrl+R sets it to RRR.
|
||
|
||
As an aid for partial color-blindness, the "inverted goal posts"
|
||
marking Rx frequency on the Wide Graph's frequency scale are now
|
||
rendered in a darker shade of green.
|
||
|
||
- Minor enhancements and bug fixes
|
||
|
||
"Save None" now writes no .wav files to disk, even temporarily.
|
||
|
||
An explicit entry for "WW Digi Contest" has been added to
|
||
"Special operating activities" on the "Settings | Advanced" tab.
|
||
|
||
Contest mode FT4 now always uses RR73 for the Tx4 message.
|
||
|
||
The Status bar now displays the number of decodes found in the
|
||
most recent Rx sequence.
|
||
|
||
Release candidate WSJT-X 2.2.0-rc1 will be available for beta-testing
|
||
for one month starting on May 10, 2020. We currently plan a General
|
||
Availability (GA) release of WSJT-X 2.2.0 on June 1, 2020.
|
||
|
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For those looking even farther ahead: We are well along in the
|
||
development of two new modes designed for the LF and MF bands. One
|
||
mode is for WSPR-like activity and one for making 2-way QSOs. Both
|
||
use Low-density Parity Check (LDPC) codes, 4-GFSK modulation, and
|
||
two-minute T/R sequences. The QSO mode reaches threshold SNR
|
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sensitivity around -31 dB on the AWGN channel, and the WSPR-like mode
|
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better than -32 dB.
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Release: WSJT-X 2.1.1
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November 25, 2019
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---------------------
|
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||
WSJT-X 2.1.1 is a bug fix only release addressing regressions in the
|
||
prior v2.1.0 release.
|
||
|
||
- Document rules for the UDP message protocol.
|
||
- Fix bug that could cause display of a blank Settings window.
|
||
- Fix message parsing to properly handle 4-character directed CQs
|
||
- Fix a potential crash in the interface to Omni-Rig.
|
||
- Improve handling of unexpected rig off line status changes from
|
||
Omni-Rig.
|
||
- Add an option to highlight unworked 2-character grid fields rather
|
||
than 4-character grid squares.
|
||
- Fix bug that caused unwanted disabling of "Enable Tx" in Fox mode.
|
||
- Log duplicate contacts in FT8 DXpedition Fox mode.
|
||
- Regenerate the GFSK Tx waveform if Tx audio frequency is changed.
|
||
- Fix the behavior of double-clicking on a decoded message with first
|
||
callsign displayed as an unresolved hash code <...>.
|
||
- Fix a problem with determining "worked before" status after a band
|
||
change.
|
||
- Updates to the WSJT-X 2.1 User Guide.
|
||
- Fix a production issue with the macOS tool chain that generated
|
||
broken executables.
|
||
|
||
Release: WSJT-X 2.1
|
||
July 15, 2019
|
||
-------------------
|
||
|
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WSJT-X 2.1 is a major update that introduces FT4, a new protocol
|
||
targeted at HF contesting. Other improvements have been made in the
|
||
following areas:
|
||
|
||
- FT8 waveform generated with GMSK, fully backward compatible
|
||
- user options for waterfall and spectrum display
|
||
- contest logging
|
||
- rig control
|
||
- user interface
|
||
- UDP messaging for inter-program communication
|
||
- accessibility
|
||
|
||
There are numerous minor enhancements and bug fixes.
|
||
|
||
We now provide a separate installation package for 64-bit Windows 7
|
||
and later, with significant improvements in decoding speed.
|
||
|
||
Release: WSJT-X 2.1.0-rc7
|
||
June 3, 2019
|
||
-------------------------
|
||
|
||
This release is a bug fix only release addressing regressions in the
|
||
prior RC6 release. There are no functional changes other than an
|
||
updated AD1C CTY.DAT database.
|
||
|
||
|
||
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
|
||
- Enhancements to the Omni-Rig CAT interface
|
||
- New setting option to include or exclude WAE entities
|
||
|
||
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
|
||
- Repaired field editing in the Contest Log window
|
||
|
||
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.
|
||
|
||
|
||
Release: WSJT-X 2.1.0-rc5
|
||
April 29, 2019
|
||
-------------------------
|
||
|
||
WSJT-X 2.1.0 fifth release candidate is a minor release including the
|
||
following.
|
||
|
||
- Repairs a defect that stopped messages from UDP servers being accepted.
|
||
- Improved message sequencing a QSO end for CQing FT4 stations.
|
||
- "Best S+P" action times out after two minutes waiting for a candidate.
|
||
- Updated macOS Info.plist to comply with latest mic. privacy controls.
|
||
- Multi-pass decoding for FT4 inc. prior decode subtraction.
|
||
- Fast/Normal/Deep options for the FT4 decoder.
|
||
- Proposed suggested working frequencies for the new FT4 mode.
|
||
- Repair a defect in RTTY RU where sequencer fails to advance to Tx3.
|
||
- Fix a defect where the contest serial # spin box was incorrectly hidden.
|
||
- Fix defects in ALL.TXT formatting for JT65 and JT9.
|
||
- Reduce timeout for AP decoding with own call from 10 mins to 5 mins.
|
||
|
||
|
||
Release: WSJT-X 2.1.0-rc4
|
||
April 10, 2019
|
||
-------------------------
|
||
|
||
WSJT-X 2.1.0 fourth release candidate is a minor release including the
|
||
following.
|
||
|
||
- New "Call Best" button for FT4 mode to select the best reply to a
|
||
CQ call based on neediness.
|
||
- Fixed UTC display on FT4 waterfall.
|
||
|
||
This release is made by invitation only to selected testers to trial
|
||
the FT4 mode in semi-realistic contest simulations and to elicit
|
||
feedback to guide future development.
|
||
|
||
*Note* this release is not for general public release and we request
|
||
that it is not distributed.
|
||
|
||
|
||
Release: WSJT-X 2.1.0-rc3
|
||
April 5, 2019
|
||
-------------------------
|
||
|
||
WSJT-X 2.1.0 third release candidate is an enhancement release to
|
||
change the implementation of the new FT4 mode to a synchronous T/R
|
||
period of 6 seconds.
|
||
|
||
This release is made by invitation only to selected testers to trial
|
||
the FT4 mode in semi-realistic contest simulations and to elicit
|
||
feedback to guide future development.
|
||
|
||
*Note* this release is not for general public release and we request
|
||
that it is not distributed.
|
||
|
||
|
||
Release: WSJT-X 2.1.0-rc2
|
||
March 29, 2019
|
||
-------------------------
|
||
|
||
WSJT-X 2.1.0 second release candidate is a bug fix release to repair
|
||
some usability issues with FT4 contest mode. The following new
|
||
features are also included.
|
||
|
||
- Better options for QSO flow by clicking Tx# buttons to transmit
|
||
- A 64-bit package for Windows 64-bit systems
|
||
- Improved FT4 sync detection speed
|
||
|
||
This release is made by invitation only to selected testers to trial
|
||
the FT4 mode in semi-realistic contest simulations and to elicit
|
||
feedback to guide future development.
|
||
|
||
*Note* this release is not for general public release and we request
|
||
that it is not distributed.
|
||
|
||
Release: WSJT-X 2.1.0-rc1
|
||
March 25, 2019
|
||
-------------------------
|
||
|
||
WSJT-X 2.1.0 first release candidate is a preview alpha quality
|
||
release containing the following new features.
|
||
|
||
- FT4 mode, a new mode targeted at HF digital contesting
|
||
- GMSK modulation for FT4 and FT8
|
||
- New waterfall option to select between raw sensitivity or a
|
||
filtered signal representation for best visualization of signal
|
||
quality
|
||
|
||
This release is made by invitation only to selected testers to trial
|
||
the FT4 mode in semi-realistic contest simulations and to elicit
|
||
feedback to guide future development.
|
||
|
||
*Note* this release is not for general public release and we request
|
||
that it is not distributed.
|
||
|
||
|
||
Release: WSJT-X 2.0.1
|
||
February 25, 2019
|
||
---------------------
|
||
|
||
WSJT-X 2.0.1 is a bug fix release including the following defect
|
||
repairs reported since the v2.0.0 GA release.
|
||
|
||
- Remove startup message about importance of upgrading to v2.0.
|
||
- Relax ADIF log file parsing to allow garbage between records and
|
||
records with no DX callsign
|
||
- Fix bug that prevented retention of power and comments in
|
||
Log QSO window
|
||
- Updates to User Guide
|
||
- MSK144 frequency defaults to 50.260 in IARU Regions 2 and 3
|
||
- Remove hexadecimal RGB values from color-configuration panel
|
||
- Fix a bounds error by not executing Fox-related code when not
|
||
in Fox mode
|
||
- Allow the logQSO dialog to modify "Exch Sent" or "Rcvd" when
|
||
operating in RTTY or NA VHF Contest mode, and to have any
|
||
changes flow through to N1MM Logger.
|
||
- Fix several problems in handling hashed callsigns
|
||
- More rigorous quality checking of WSPR decodes from the OSD algorithm
|
||
- Fix bug that prevented recevied signal reports from
|
||
compound callsigns to be logged
|
||
- Improved recognition of callsigns with /P or /R suffixes
|
||
- Do not waste time trying AP decoding of nonstandard callsigns
|
||
- Make OSD decoding work with WSPR "type 2" messages
|
||
- Retain in Tx6 message field any CQ messages like
|
||
"CQ xxxx K1ABC FN42", where xxxx is 1-4 letters or 1-3 digits
|
||
- Optional key bindings for F1 through F5, especially for contest use
|
||
- Include grid in Tx1 messages with hashed callsign, for example
|
||
"<DF2018ARDF> K1ABC FN42"
|
||
- Better formatting for the files ALL.TXT and ALL_WSPR.TXT
|
||
- Correct a flaw in validating contest exchange data when logging
|
||
- Option to always start new decode periods at top of Band
|
||
Activity window
|
||
- New command "Erase WSPR hashtable" on the File menu
|
||
- Improved validation for ARRL RTTY RU and FD exchange fields
|
||
- UDP Reference applications join a multicast group on all available
|
||
multicast capable network interfaces
|
||
- Minor code changes to support Qt versions >=5.10
|
||
- Changes to support x64 Windows builds in preparation for Qt v5.12
|
||
- Add "ADIF Export ..." to Fox Log's contextual popup menu
|
||
- Use ARRL-required names for VHF+ bands in exported Cabrillo log
|
||
- New utility program rigctlcom-wsjtx (from Hamlib)
|
||
- Remove temporary FT8 working frequencies from default frequency list
|
||
- UDP protocol's Clear (3) message is made two-way, for better
|
||
communication with DX Lab Suite applications
|
||
- Reset QSO start time when aborting a QSO or clearing messages by ESC
|
||
or F4
|
||
- Correct a logging issue in Fox's ADIF log when Fox sends RR73 to more
|
||
than one Hound in the same Tx sequence.
|
||
|
||
|
||
Release: WSJT-X 2.0
|
||
December 10, 2018
|
||
-----------------------
|
||
|
||
WSJT-X 2.0 is a major update that introduces new protocols for FT8 and
|
||
MSK144. The new protocols become the world-wide standards on December
|
||
10, 2018.
|
||
|
||
WSJT-X 2.0 cannot communicate in these modes with other stations using
|
||
WSJT-X v1.9.1 or earlier.
|
||
|
||
Please help by urging everyone to upgrade no later than January 1, 2019.
|
||
|
||
New features since WSJT-X v1.9.1:
|
||
|
||
1. Compound and nonstandard callsigns are automatically recognized and
|
||
handled using new message formats.
|
||
|
||
2. The new FT8 protocol provides optimized message formats for North
|
||
American VHF contests, European VHF contests, ARRL Field Day, and ARRL
|
||
RTTY Roundup. Similarly, the new MSK144 protocol provides optimized
|
||
message formats for North American VHF and European VHF contests.
|
||
Full support is provided for "/R" and "/P" calls in the relevant
|
||
contests.
|
||
|
||
3. The new protocols provide nearly equal (or better) sensitivity
|
||
compared to the old ones, and lower false decode rates.
|
||
|
||
4. New logging features are provided for contesting and for "Fox"
|
||
(DXpedition) mode. Logging is optionally integrated with N1MM Logger+
|
||
and WriteLog.
|
||
|
||
5. Color highlighting of decoded messages provides worked-before
|
||
status for callsigns, grid locators, DXCC entities, continents, CQ
|
||
Zones, and ITU zones on a “by band” and “by mode” basis, and for
|
||
stations that have uploaded their logs to Logbook of the World (LoTW)
|
||
within a specified time interval.
|
||
|
||
6. The WSPR decoder now achieves decodes down to S/N = -31 dB. For
|
||
the particular benefit of LF/MF users, an option "No own call decodes"
|
||
has been added.
|
||
|
||
7. The UDP messages sent to companion programs have been expanded and
|
||
improved.
|
||
|
||
Some details of changes since WSJT-X-rc5 include the following:
|
||
|
||
- Initial load of ADIF log in background
|
||
- Correct the UTC displayed in Fox/Contest log
|
||
- Faster entry and correct scrolling for Fox/Contest log
|
||
- Add contest exchanges and contest type to UDP logged QSO message
|
||
- Fix a bug that suppressed decodes with negative DT.
|
||
- AK and HI are DXCCs, not states, for RTTY Roundup
|
||
- Fix improper truncation of some non-FT8 messages in ALL.TXT
|
||
- Various minor bug fixes and code cleanup
|
||
- Update the WSJT-X User Guide to v2.0 (more to come...)
|
||
- Update cty.dat
|
||
|
||
Release: WSJT-X 2.0-rc5
|
||
November 26, 2018
|
||
-----------------------
|
||
|
||
Release Candidate 5 ("RC5") is stable, works well, and fixes the known
|
||
problems in RC4. It is likely that the General Availability (GA)
|
||
release of WSJT-X 2.0 will be nearly identical to RC5.
|
||
|
||
Changes from WSJT-X 2.0-rc4 include the following:
|
||
|
||
- Make the "Auto Seq" checkbox sticky, again
|
||
- Remove the 5-minute mouse timer
|
||
- Correct the "worked before" logic for color highlighting
|
||
- Add "No own call decodes" checkbox in WSPR mode
|
||
- Display and log UTC (not local time) in contest operations
|
||
- Validate contest QSO details before allowing logging
|
||
- Force Aqua theme on macOS to avoid issues with Mojave dark theme
|
||
- Move Fox log Reset action to Fox log window context menu
|
||
- Improve layout of Working Frequencies and Station Information tables
|
||
- Allow deletes and editing in Fox and Contest log windows
|
||
- Add Tool Tips for Fox and Contest log windows
|
||
- Fix a bug causing false AP decodes in JT65 VHF+ operation
|
||
- Fix a bug that could switch unexpectedly from JT65 to JT9 mode
|
||
|
||
PLEASE NOTE: As far as WSJT-X 2.0 (RC4, RC5, and GA releases) are
|
||
concerned, signals using the old FT8 protocol are undecodable
|
||
interference. This means that regenerated replicas cannot be
|
||
subtracted from received data, and consequently second- and third-pass
|
||
decodes may be impeded. Full performance of the 77-bit decoder will
|
||
not be realized until most signals on a crowded band are using the
|
||
new FT8 protocol.
|
||
|
||
|
||
Release: WSJT-X 2.0-rc4
|
||
November 12, 2018
|
||
-----------------------
|
||
|
||
Changes from WSJT-X Version 2.0.0-rc3 include the following:
|
||
|
||
- Fix the "cannot open file fort.81" bug
|
||
- Avoid too many redirect loops related to openSSL support
|
||
- Fix the auto-generated messages for nonstandard callsigns
|
||
- Remove all support for the legacy FT8 protocol
|
||
- Disallow selecting MSK144 with RTTY or Field Day messages active
|
||
- Correct and expand support for color highlighting decoded messages
|
||
- ESC key aborts a QSO, clears DX Call, and selects Tx6
|
||
- Disable "nextCall" procedure for RTTY contest; it still needs work
|
||
- Correct a flaw in handling MSK144 Sh messages
|
||
- Prevent Fox from inadvertently toggling Tx 1st/Even
|
||
- Re-organize the Fox/Hound/Contest selection boxes
|
||
- Improve the validators for contest exchange boxes
|
||
- Disable Tx after 5 minutes of no mouse movement
|
||
- Remove end-of-line AP info when using contest messages
|
||
- Fix forwarding of Sent and Rcvd exchanges to N1MM+ and ADIF log
|
||
- Don't auto-log a QSO with incomplete exchange info
|
||
- Fix two sequencing flaws after double-clicks on a decoded msg
|
||
- New facilities for Contest and Fox-mode logging
|
||
|
||
|
||
Release: WSJT-X 2.0-rc3
|
||
October 15, 2018
|
||
-----------------------
|
||
|
||
Changes from WSJT-X Version 2.0.0-rc2 include the following:
|
||
|
||
- Improved SNR calculation for FT8
|
||
- Test grid4 (not grid6) for matches in ADIF log
|
||
- Auto-generate 77-bit messages for callsigns with /R or /P
|
||
- Fix auto-sequencing for "CQ ABC ...", "CQ ABCD ...", etc.
|
||
- Fix the "CQ RU RU ..." bug
|
||
- Implement AP decoding for contest messages and for Hound
|
||
- Check Field Day and RTTY Roundup exchanges for validity
|
||
- Implement "Select next caller" and use of "TU; ..." messages
|
||
- Option to "auto log" in contests
|
||
- Real-time display of contest log
|
||
- Contest exchanges sent to ADIF log and N1MM+
|
||
- Function to export Cabrillo log
|
||
- Convert DXpedition mode to always use 77-bit messages
|
||
- Fix bug associated with opening "houndcallers.txt"
|
||
- Remove end-of-line numbers from MSK144 decodes
|
||
- Finish MSK144 encoding/decoding for Sh msgs and nonstandard calls
|
||
- Halt Tx before resetting power after Tune
|
||
- Auto update of LoTW info, and faster program startup
|
||
|
||
|
||
Release: WSJT-X 2.0-rc2
|
||
September 25, 2018
|
||
-----------------------
|
||
Changes from WSJT-X Version 2.0.0-rc1 include the following:
|
||
|
||
- Corrected a flaw that encoded a message's first callsign as
|
||
hexadecimal telemetry data if the call consisted only of letters
|
||
A-F and digits 0-9.
|
||
|
||
- Corrected program logic that failed to identify certain callsigns
|
||
as "nonstandard".
|
||
|
||
- Fixed a bug that color-highlighted bare CQ messages (no grid
|
||
locator) as "New DXCC".
|
||
|
||
- Fixed a bug that failed to log Report Sent if MyCall is a
|
||
nonstandard call.
|
||
|
||
- Fixed a bug that generated incorrect MSK144 tones for certain
|
||
messages and caused a "memory" effect on stations receiving the
|
||
incorrect tones.
|
||
|
||
- Fixed several bugs that could cause certain Tx messages to crash
|
||
the program.
|
||
|
||
- Suppressed the display of certain illogical false decodes.
|
||
|
||
|
||
Release: WSJT-X 2.0-rc1
|
||
September 17, 2018
|
||
-----------------------
|
||
|
||
This is the first candidate release on WSJT-X 2.0, intended for
|
||
beta-level testing. For details see:
|
||
|
||
http://physics.princeton.edu/pulsar/k1jt/New_Features_WSJT-X_2.0.txt
|
||
http://physics.princeton.edu/pulsar/k1jt/Quick_Start_WSJT-X_2.0.pdf
|
||
http://physics.princeton.edu/pulsar/k1jt/77bit.txt
|
||
|
||
|
||
Release: WSJT-X Version 1.9.1
|
||
May 31, 2018
|
||
-----------------------------
|
||
|
||
This release is a critical bug fix release that removes an unintended
|
||
restriction of FT8 DXpedition mode.
|
||
|
||
|
||
Release: WSJT-X Version 1.9.0
|
||
May 28, 2018
|
||
-----------------------------
|
||
|
||
Changes from WSJT-X Version 1.9.0-rc4 include the following:
|
||
- Display in the right text window of MSK144 messages addressed to
|
||
"MyCall" has been restored.
|
||
|
||
- Fox is not allowed to transmit in any of the default FT8 sub-bands.
|
||
|
||
- Fox can now work Hounds using compound callsigns.
|
||
|
||
- Fox can now transmit free-text messages (and any standard FT8 message)
|
||
by using Tab 1 or Tab 2.
|
||
|
||
- Added a checkbox to enable more frequent programmed CQs by Fox.
|
||
Default is OFF.
|
||
|
||
- Alt+N keyboard shortcut has been restored.
|
||
|
||
- MacOS program crash on unexpected decode request has been fixed.
|
||
|
||
- Several minor bug fixes and added convenience features.
|
||
|
||
- Hamlib, support for TRXManger added.
|
||
|
||
- Hamlib, improved support for flrig.
|
||
|
||
|
||
Release: WSJT-X Version 1.9.0-rc4
|
||
April 30, 2018
|
||
---------------------------------
|
||
|
||
Changes from WSJT-X Version 1.9.0-rc3 include the following:
|
||
|
||
- Corrected a number of flaws in Fox and Hound behavior, FT8
|
||
DXpedition Mode
|
||
|
||
- Decoded CQ calls where a prefix has been used as a suffix should
|
||
have the DXCC entity name assigned correctly in almost all cases
|
||
|
||
- Improved AFC capability for the wider JT65 sub-modes to help with
|
||
drifting signals
|
||
|
||
- Better support for macOS using hi-DPI Retina displays
|
||
|
||
- New UDP message that allows external applications to highlight
|
||
decoded callsigns
|
||
|
||
- Main-screen geometry and state of the "splitter" setting between its
|
||
two text windows is now properly restored after program restart.
|
||
|
||
- New simulator jt49sim[.exe] replaces jt4sim and jt9sim
|
||
|
||
- Correct S/N measurements for the JT9 slow/wide submodes
|
||
|
||
- Other minor bug fixes
|
||
|
||
- Updated copy of cty.dat
|
||
|
||
|
||
Release: WSJT-X Version 1.9.0-rc3
|
||
March 18, 2018
|
||
---------------------------------
|
||
|
||
Changes from WSJT-X Version 1.9.0-rc2 include the following:
|
||
|
||
- Corrected a number of flaws in Fox behavior, FT8 DXpedition Mode
|
||
|
||
- Allow Hounds to use compound callsigns
|
||
|
||
- Write debugging information to FoxQSO.txt.
|
||
|
||
- Fix the "Blue Decode Button" bug
|
||
|
||
- Allow partial processing of incoming UDP Reply messages so that
|
||
non-CQ/QRZ decodes can be processed. The processing is the same as
|
||
double-clicking the same decoded message within WSJT-X except that
|
||
"Enable Tx" will not be enabled.
|
||
|
||
- Send DX grid locator to wsjt_status.txt, for use by applications like
|
||
PstRotatorAZ
|
||
|
||
- Correct the display of DXCC status of KG4 calls
|
||
|
||
- Updated copy of cty.dat
|
||
|
||
- Updates to documentation
|
||
|
||
- Other minor bug fixes
|
||
|
||
- This release contains updated Hamlib functionality including changes
|
||
to the Yaesu FT-817 back end that allows the uBITx kit transceiver
|
||
to be CAT controlled by WSJT-X.
|
||
|
||
|
||
|
||
Release: WSJT-X Version 1.9.0-rc2
|
||
February 26, 2018
|
||
---------------------------------
|
||
|
||
Changes from WSJT-X Version 1.8.0 include the following:
|
||
|
||
- New FT8 DXpedition Mode to facilitate high QSO rates in pileup
|
||
situations
|
||
|
||
- Decoding improvements for JT65 mode, including a priori (AP)
|
||
decoding when VHF/UHF/Microwave features are enabled
|
||
|
||
- Optional Auto-Sequencing in JT4, JT9, and JT65 when
|
||
VHF/UHF/Microwave features are enabled
|
||
|
||
- Better suppression of low-confidence false decodes generated by AP
|
||
decoding in FT8 mode
|
||
|
||
- Improved decoding performance for WSPR mode, especially effective at
|
||
LF and MF
|
||
|
||
- Minor adjustments to auto-sequencing behavior
|
||
|
||
- More flexible Doppler control features for EME
|
||
|
||
- Improved waterfall sensitivity for very weak signals
|
||
|
||
- Automatic real-time forwarding of logged information to N1MM Logger+
|
||
|
||
- Expanded and improved UDP messages sent to companion programs
|
||
|
||
- Bug fixes and other minor tweaks to user interface
|
||
|
||
A primary purpose of this beta release is to allow field testing of
|
||
FT8 DXpedition Mode. Instructions for this mode are posted here:
|
||
|
||
http://physics.princeton.edu/pulsar/k1jt/FT8_DXpedition_Mode.pdf
|
||
|
||
Contacts in FT8 DXpedition Mode must use WSJT-X v1.9.0 at both ends of
|
||
the QSO. Please report any anomalous behavior to email list
|
||
wsjt-devel@lists.sourceforge.net. You must be a subscriber in order
|
||
to post there.
|
||
|
||
|
||
Release: WSJT-X Version 1.8.0
|
||
October 27, 2017
|
||
-----------------------------
|
||
|
||
This is the full General Availability release of WSJT-X Version 1.8.0.
|
||
|
||
Changes from WSJT-X Version 1.8.0-rc3 are very minor:
|
||
|
||
- Right-click on the Wide Graph now pops up a Context Menu. Select
|
||
the item *Set Rx & Tx Offset* to complete a one-handed setting of
|
||
both red and green frequency markers.
|
||
|
||
- Several clarifications and additions to Tool Tips and the User Guide.
|
||
|
||
|
||
We recommend that all users should upgrade to WSJT-X Version 1.8.0.
|
||
|
||
If you upgrade from v1.8.0-rc1 it may be necessary to do a one-time
|
||
reset of the default list of suggested operating frequencies. Go to
|
||
*File->Settings->Frequencies*, right click on the table and select
|
||
*Reset*.
|
||
|
||
|
||
Release: WSJT-X Version 1.8.0-rc3
|
||
October 16, 2017
|
||
---------------------------------
|
||
|
||
Most (but not all) changes since Version 1.8.0-rc2 involve user
|
||
control of the increasingly popular FT8 mode. The "RC3" release also
|
||
includes minor bug fixes and updates to the WSJT-X User Guide.
|
||
|
||
The following list includes all of the more important changes:
|
||
|
||
- New optimization of GUI for simplex and split behavior in FT8 mode.
|
||
|
||
1. Checkbox "Lock Tx Freq" on main window is relabeled "Hold Tx Freq".
|
||
|
||
2. Double-clicking on decoded messages that do not contain your own
|
||
call moves both Rx and Tx frequencies. If the first callsign is
|
||
your own call, only Rx freq moves.
|
||
|
||
3. Double-clicking on decoded messages moves the Rx frequency. If
|
||
"Hold Tx Freq" is checked, Tx frequency is moved only if CTRL was
|
||
held down.
|
||
|
||
4. Clicking on the waterfall moves Rx and Tx frequencies as
|
||
before: Rx only on a simple click, Tx only on SHIFT-click, and
|
||
both on CTRL-click. This happens even if "Hold Tx Freq" is
|
||
checked.
|
||
|
||
- Add a semi-automated "FreqCal" procedure: see *Solve for calibration
|
||
parameters* on the Tools menu.
|
||
|
||
- Improv auto-sequencing behavior: stop and on-frequency
|
||
transmission if a called station comes back to someone else.
|
||
|
||
- Improve S/N estimation in some situations involving QRM.
|
||
|
||
- Fix an initialization issue with user-modified application fonts.
|
||
|
||
- Fix an issue with Tx5 message generation with Type 2 compound calls.
|
||
|
||
- Enhance and improve the ADIF parser of logbook records. Update
|
||
the band limits as per ADIF 3.0.6 specification.
|
||
|
||
- Increase the FT8 DT range to +/- 2.5 s.
|
||
|
||
- Do not allow window manager events to close the astronomical data
|
||
window.
|
||
|
||
- Add an "Erase" item to the context (right-click) menu for decoded
|
||
text.
|
||
|
||
- Extend UDP messages with an "off air" boolean field indicating that
|
||
the decode was derived from a .WAV file playback rather than an on air
|
||
reception.
|
||
|
||
- Extend reference applications to use the new off air decode message
|
||
field.
|
||
|
||
- Improve performance of FT8 decoder, especially for overlapping
|
||
signals.
|
||
|
||
- Allow specialized use of "x2 Tone Spacing" in FT8 and slow JT9
|
||
modes.
|
||
|
||
- Move "NA VHF Contest Mode" checkbox to main screen. Query the
|
||
operator if d > 10000 km.
|
||
|
||
- Adjust UI to improve portability with font size changes and between
|
||
platforms.
|
||
|
||
- Extend UDP Reply message to support keyboard modifiers. This allows
|
||
UDP servers to emulate keyboard modified double-clicks on decoded
|
||
messages, e.g. ALT+double-click for replying to a CQ or QRZ call
|
||
without changing ones Tx frequency offset.
|
||
|
||
- Update the cty.dat file (21st Sept 2017).
|
||
|
||
- Ensure that Fast Graph is properly initialized.
|
||
|
||
- Better handling of worked before and country name display. Appended
|
||
text is added at a fixed column unless the message overlaps in which
|
||
case the appended information floats to the right.
|
||
|
||
- Restore printing of MSK144 decode quality information.
|
||
|
||
- Display Echo Graph automatically when Echo mode is started.
|
||
|
||
- Fix a bug that prevented double-click on a JT65 EME-style "OOO"
|
||
message from populating the Tx message boxes.
|
||
|
||
- Fixed behavior with double-click on 'CQ <AA-ZZ> <call> <grid>.'
|
||
|
||
- Update the "blank line" divider with band ID at 4*TRperiod/5.
|
||
|
||
- Fix cty.dat lookups that were not honouring exact match flags
|
||
|
||
- Add some further Copyright protections.
|
||
|
||
- Fix a bug involving "firstcall contains mycall" but not equal to mycall.
|
||
|
||
- Fix an issue with editing IARU regions in the working frequencies table.
|
||
|
||
|
||
|
||
|
||
Release: WSJT-X Version 1.8.0-rc2
|
||
September 2, 2017
|
||
---------------------------------
|
||
|
||
Implementation of FT8 and its auto-sequencing feature is now more
|
||
capable and more polished. The decoder is faster and better: it now
|
||
includes signal subtraction, multi-pass decoding, and the use of
|
||
accumulated "a priori" information as a QSO progresses. Sensitivity
|
||
extends downward as far as -24 dB in some circumstances. Overlapping
|
||
signals 2 and 3 deep are frequently decoded at essentially the same
|
||
frequency. On a crowded band we sometimes see more than 30 decodes in
|
||
a single 15-second interval, over a 2 kHz window. The North American
|
||
VHF Contesting Mode has been extended to include both FT8 and MSK144
|
||
modes.
|
||
|
||
The "RC2" release also includes many minor bug fixes and an
|
||
extensively updated WSJT-X User Guide.
|
||
|
||
Depending on what code revision you upgrade from, it may be necessary
|
||
to do a one-time reset of the default list of suggested operating
|
||
frequencies. Go to *File->Settings->Frequencies*, right click on
|
||
the table and select *Reset*.
|
||
|
||
|
||
Release: WSJT-X Version 1.8.0
|
||
-----------------------------
|
||
|
||
NEW FEATURES IN WSJT-X Version 1.8.0
|
||
------------------------------------
|
||
|
||
1. New mode called FT8: sensitivity down to -20 dB on the AWGN
|
||
channel; QSOs 4 times faster than JT65 or JT9; auto-sequencing
|
||
includes an option to respond automatically to first decoded
|
||
reply to your CQ.
|
||
|
||
2. New mode for accurate Frequency Calibration of your radio.
|
||
|
||
3. Improved performance of decoders for JT65, QRA64, and MSK144.
|
||
MSK144 includes facilities for amplitide and phase equalization
|
||
and an "SWL" mode for short-format messages.
|
||
|
||
4. Options to minimize screen space used by Main and Wide Graph
|
||
windows.
|
||
|
||
5. Enhanced management scheme for table of operating frequencies, and
|
||
a new set of default frequencies specific to the three IARU
|
||
Regions.
|
||
|
||
6. Improved CAT control for many rigs, including those controlled
|
||
through Commander or OmniRig.
|
||
|
||
7. New keyboard shortcuts to set "Tx even/1st" ON or OFF.
|
||
|
||
8. A number of (mostly minor) bug fixes and tweaks to the user
|
||
interface. For example: new behavior for the audio level slider;
|
||
correctly logged QSO start times in certain situations; correct
|
||
control of FT-891/991 and some other radios via rigctld.
|
||
|
||
At the time of the v1.8.0-rc1 release the following tasks are yet to
|
||
be completed:
|
||
|
||
1. Updates to WSJT-X User Guide.
|
||
2. Sample files for FT8.
|
||
3. Enhanced decoding using AP ("a priori") information.
|
||
4. Signal subtraction and multi-pass decoding.
|
||
5. Option to Auto-respond to the weakest responder to your CQ.
|
||
|
||
|
||
Installation packages for Windows, Linux, OS X, and Raspbian can be
|
||
downloaded from the WSJT web site:
|
||
http://physics.princeton.edu/pulsar/K1JT/wsjtx.html
|
||
|
||
Please send bug reports to either wsjtgroup@yahoogroups.com or
|
||
wsjt-devel@lists.sourceforge.net. Such reports should include a full
|
||
prescription of steps to reproduce the undesired behavior. You must
|
||
be a subscriber to post to either of these lists.
|
||
|
||
|
||
Brief Description of the FT8 Protocol
|
||
-------------------------------------
|
||
|
||
WSJT-X Version 1.8.0 includes a new mode called FT8, developed by K9AN
|
||
and K1JT. The mode name "FT8" stands for "Franke and Taylor, 8-FSK
|
||
modulation". FT8 uses 15-second T/R sequences and provides 50% or
|
||
better decoding probability down to -20 dB on an AWGN channel. An
|
||
auto-sequencing facility includes an option to respond automatically
|
||
to the first decoded reply to your CQ. FT8 QSOs are 4 times faster
|
||
than those made with JT65 or JT9. FT8 is an excellent mode for HF
|
||
DXing and for situations like multi-hop E_s on 6 meters, where deep
|
||
QSB may make fast and reliable completion of QSOs desirable.
|
||
|
||
Some important characteristics of FT8:
|
||
|
||
- T/R sequence length: 15 s
|
||
- Message length: 75 bits + 12-bit CRC
|
||
- FEC code: LDPC(174,87)
|
||
- Modulation: 8-FSK, tone spacing 6.25 Hz
|
||
- Constant-envelope waveform
|
||
- Occupied bandwidth: 50 Hz
|
||
- Synchronization: 7x7 Costas arrays at start, middle, and end
|
||
- Transmission duration: 79*1920/12000 = 12.64 s
|
||
- Decoding threshold: -20 dB; several dB lower with AP decoding
|
||
- Multi-decoder finds and decodes all FT8 signals in passband
|
||
- Optional auto-sequencing and auto-reply to a CQ response
|
||
- Operational behavior similar to JT9, JT65
|
||
|
||
We plan to implement signal subtraction, two-pass decoding, and use of
|
||
a priori (AP) information in the decoder. These features are not yet
|
||
activated in v1.8.0.
|
||
|
||
We haven't yet finalized what the three extra bits in the message
|
||
payload will be used for. Suggestions are welcome!
|
||
|
||
++++++ -- Joe, K1JT, for the WSJT Development Team
|
||
|