Hello the list,

    I have installed WSJT-X from Prof. Taylor's web site on my Win XP machine.
When I click on the WSJT-X icon I get a pop-up "Error starting or
running program C:\Program Files \wsjtx\jt9-s "
and then the Windows error reporting box pops up.

   Do I need something other than Windows XP Professional Service pack 3 ?

  73 & tnx!
Warren K2ORS



On Wed, Nov 28, 2012 at 12:13 PM, Joe Taylor <[email protected]> wrote:
> To:   Users of WSJT-X
> From: Joe Taylor, K1JT
>
> A new revision of the experimental program WSJT-X has been posted.  As
> usual, a link to it appears on the WSJT web site:
>
> http://physics.princeton.edu/pulsar/K1JT/wsjt.html
>
> The following is a direct link to the installation file:
>
> http://physics.princeton.edu/pulsar/K1JT/WSJTX_05r2783.exe
>
> This revision has an unusually large number of changes relative to the
> previous release, v0.4 r2746.  These changes include:
>
> 1. PTT control via COM ports COM10 and higher is enabled.
>
> 2. Improved decoder performance: higher speed as well as better chances of
> success.  Moderate amounts of frequency drift are detected and compensated.
> Computed S/N values are more reliable.  Time offsets from -2.5 to +5 s are
> now supported, which makes JT9 usable for EME.  (EME tests on 144 MHz have
> been successful, and performance on that propagation mode appears to be
> good.)
>
> 3. Tx Frequency now tracks the selected QSO Frequency (unless you hold down
> the CTRL key when setting QSO Frequency via mouse-clicks or the F11/F12
> keys).
>
> 4. Decoded text containing "CQ " is highlighted with green background; text
> including "MyCall" is highlighted in red.
>
> 5. In previous versions, signal reports were required to be in the range -30
> to -01 dB.  In v0.5 r2782 the range has been extended to -50 to +49 dB.
> There is backward compatibility for the range -30 to -01, but reports in the
> range -50 to -31 and 0 to +49 will NOT be decoded correctly by previous
> program versions.  It is important to upgrade!
>
> 6. Items "Save Synced" and "Save Decoded" are now implemented.
>
> 7. UTC Date, JT9 submode, and a parameter related to the decoding procedure
> are now included in file wsjtx_rx.log.
>
> 8. Editing of Tx messages (in any of the six Tx message boxes) is complete
> when you hit "Tab" or "Return".  The message is then parsed and converted to
> the form in which it will be displayed if decoding is successful.  Free-text
> messages are trimmed to 13 characters and highlighted with a pink
> background.
>
> 9. The most recent transmitted message is displayed in the right-most label
> on the status bar.  This can be useful if you have lost track of where you
> were in a QSO.
>
> 10. By default, the program now starts with Monitor ON.  An option on the
> Setup menu allows you to select "Monitor OFF at startup".
>
> 11. Better scaling is provided for the red "JT9 Sync" curve.  Note that JT9
> signals in the active sub-mode should appear in this plot as a bump of width
> equal to the total signal bandwidth, with a narrow and slightly higher bump
> at the left edge.  The narrow bump is the frequency of the Sync tone, which
> is defined as the nominal frequency of the JT9 signal.
>
> 12. Basic QSO information is now written to file wsjt.log when you click the
> "Log QSO" button.
>
> 13. The WSJT-X User's Guide has been updated.
>
> 14. Other known bugs have been fixed.  There will probably be new ones!
> When you find one, or if you know of any old ones that have NOT been fixed,
> please send me email.
>
> Summary of Present Status
> ----------------------------------------------------------------------
> I believe that WSJT-X is now a stable and very usable program.  Many
> thousands of QSOs have been made with JT9-1, mostly at HF -- I have made
> nearly 100, myself.  Also a number of QSOs have also been completed at MF,
> and successful tests have been made on 2m EME, etc.  A number of QSOs have
> also been made with JT9-2.
>
> As far as I know the slower modes (JT9-5, JT9-10, and JT9-30) also work
> correctly.  (Certainly they do in my laboratory test setup.)  Most people
> will find these modes too slow for "everyday" use, and they require high
> frequency stability.  It remains to be seen whether they will be widely
> used.
>
> An alternative approach to obtaining improved sensitivity would be to give
> the decoder an ability to average over several successive transmissions.
> For example, the average of five JT9-1 transmissions could reach a decoding
> threshold around -32 dB, only 2 dB worse than a single JT9-5 transmission.
> Because of QSB, the shorter transmissions may actually succeed in less total
> time.  Stability requirements would be those of JT9-1, much less stringent
> than those of JT9-5.
>
> Program development is not finished, by any means.  I will be grateful for
> your feedback on performance issues, as well as your "wish-list" of features
> to be added.  As always, example recordings of files that you think should
> have decoded, but did not, will be much appreciated.
>
> I hope to find time for more work on WSJT-X soon. Later this week, however,
> my radio time will be focused primarily on the ARRL International EME
> Contest.
>
> With best wishes,
>
>         -- 73, Joe, K1JT
>



-- 
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1