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Joe Taylor
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Changes in WSJT 5.9.5 (r236): August 3, 2006
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---------------------------------------------
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WSJT v5.9.5 r236 contains some major improvements for JT65 and a
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number of smaller enhancements affecting other modes.
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1. Changes to the JT65 Deep Search decoder have made it slightly more
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sensitive, on average. More importantly, the number of false
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decodes has been dramatically reduced. JT65 decoding can be as
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much as 3 times faster than before. For these reasons alone, you
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should be sure to upgrade if you use JT65.
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2. A more useful menu of JT65 decoding options is provided. You may
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now select "No Deep Search", "Normal Deep Search", "Aggressive Deep
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Search", or "Include Average in Aggressive Deep Search".
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3. The two end-of-line numbers (formerly displayed only if Aggressive
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was checked) are now always displayed in JT65 mode. The first
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number is 1 if the Koetter-Vardy decoder succeeded, 0 otherwise.
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The second number is the confidence level of the Deep Search
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decoding (if enabled) on a 0 to 10 scale.
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4. The JT65 AFC function has been rewritten. Drifting signals
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(including Doppler-induced drifts at 1296 MHz) will usually decode
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better with AFC turned on.
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5. Mode JT65C, which is used primarily at 1296 MHz, has been improved
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in several ways. Synchronizing is better by about 1 "sync" unit,
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and signal strengths are measured more reliably. Decoding of
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shorthand messages is improved.
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6. When compiled for Linux and FreeBSD (see note below), WSJT now
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allows use of parallel as well as serial ports for T/R control.
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7. Wave files are now saved correctly in Linux and FreeBSD versions.
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8. Support has been added for extra-long callsigns such as
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VU4AN/VU3RYF. The full augmented callsign must be no longer than
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12 characters. Enter the special add-on DXCC prefix or callsign
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(in this case, VU4AN) on the Setup | Options page.
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9. If the "Grid" box on main WSJT window is blank, displayed values of
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Doppler and df/dt will be those of your own echoes.
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10. If the ToRadio box is blank, "Mon_" (rather than "_" is now used
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as the naming prefix for recorded wave files.
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11. The birdie-killing "Zap" feature has been changed so that if
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Freeze is ON, nothing is zapped within Tol of the Freeze DF. In
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addition, the Zap behavior no longer depends on previous decoding
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history.
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12. Bug fix: previously, if Freeze had been checked while operating in
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another mode, Zap no longer worked correctly in FSK441 mode. This
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has been fixed.
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13. The selection of data for mouse-picked decodes in JT6M mode has
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been corrected. (In recent versions it was necessary to click a
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few seconds to the right of a signal enhancement.)
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14. The logic that limits search for JT6M synchronization to a range
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of frequencies (+/- Tol around FreezeDF) has been corrected. A
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small green tick at the left edge of the main graphical area
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indicates the FreezeDF frequency. The FreezeDF value is also
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displayed digitally in the status bar. You can change FreezeDF
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with the left/right keyboard arrows. Default settings for JT6M are
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now Tol=200, Freeze On, MouseDF=0.
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15. If mouse-picked decoding was invoked, all wave files were
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previously saved even if "Save none" was selected on the menu.
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This has been fixed.
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16. On your first start-up with version 5.9.5, be sure to re-enter
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your correct PTT port number on the Setup | Options page. Under
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Linux or FreeBSD, enter the appropriate device name, for example
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/dev/ttyS0.
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Special note to Linux and FreeBSD users
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---------------------------------------
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WSJT is now being used by a number of people on Linux or FreeBSD
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systems. Appearance and operational behavior is essentially identical
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to the Windows version. At present you must compile the yourself for
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Linix or FreeBSD. Instructions are available, and others who have
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succeeded will help you if help is needed. This is not necessarily a
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trivial task, however.
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Packaged versions of WSJT for specific *nix distributions may be
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provided if there is sufficient demand.
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For more information on WSJT for Linux and FreeBSD, or if you want to
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try compiling the program for Mac OS/X, contact the WSJT development
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team at wsjt-devel@lists.berlios.de.
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WSJT is Open Source software. The source code and related materials
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can be found at http://developer.berlios.de/projects/wsjt/.
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Changes in WSJT 5.9.4 (r159): April 11, 2006
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---------------------------------------------
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This is a maintenance release.
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1. Problems exhibited on some computers with dual or "hyperthreading"
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CPUs have been fixed (or at least reduced, see below).
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2. Problems with reading previously recorded files (such as the sample
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files in the WSJT tutorial) have been fixed.
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3. Bad data could cause an error message "Error in KV decoder, or no
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KV decoder present" in the console window. Fixed.
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4. The delay between PTT assertion and start of Tx Audio, and the
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delay between end of Tx Audio and release of PTT, have been increased
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by 0.2 s. In addition, a bug in the T/R timing logic was fixed.
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5. There was a minor bug in computing the position of the moon. (The
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displayed Az and El of the "home station" were correct for a time 100
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seconds earlier than the actual time.) This has been fixed. In
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addition, refraction adjustments are no longer made in the Sun and
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Moon elevations.
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6. A minor bug when displaying large negative Doppler shifts in the
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file azel.dat has been fixed.
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7. As an aid to future development of WSJT, the program is now capable
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of transmitting "test files" with arbitrary audio content.
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NOTE: If you have a computer with multiple CPUs or a CPU with
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hyperthreading, and if WSJT 5.9.4 does not run properly for you,
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please reboot your machine, enter the BIOS Setup screen, disable
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hyperthreading, and see if WSJT then runs properly. Then let me know
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the results of this test. Note: you will probably notice very little
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(if any) degradation in performance by leaving hyperthreading turned
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off. For now, this is the recommended procedure if you have problems
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with it turned on.
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Changes in WSJT 5.9.3: January 26, 2006
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---------------------------------------
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This is a minor maintenance release.
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@ -8,9 +146,8 @@ This is a minor maintenance release.
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2. The occasional error message about "images do not match" has been
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trapped and should no longer occur.
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3. Code that required one's own grid locator to be entered with first
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two letters in upper case, last two in lower case, has been made
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case insensitive (as it should have been).
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3. It is no longer necessary to enter one's own grid locator with the
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first two letters in upper case and the last two in lower case.
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4. Initialization of the PTT line to the "OFF" state has been fixed.
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