Message-ID: <50B65CDC.7090402@princeton.edu>
Date: Wed, 28 Nov 2012 13:50:04 -0500
From: Joe Taylor <joe@Princeton.EDU>
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Subject: Re: LF: WSJT-X v0.5 r2783
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Hi Warren,

Install WSJT-X into its own directory (the suggested default is 
C:\WSJTX) rather than the conventional C:\Program Files\WSJTX.

	-- Joe, K1JT

On 11/28/2012 1:14 PM, Warren Ziegler wrote:
> 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<joe@princeton.edu>  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
>>
>
>
>