月: 2018年5月

Forwarded by Bunshiro Tamura
———————– Original Message ———————–
From: Joe Taylor
To: WSJT software development
Date: Tue, 29 May 2018 09:27:44 -0400
Subject: [wsjt-devel] Release of WSJT-X Version 1.9.0
—-

The WSJT Development Group is pleased to announce WSJT-X Version 1.9.0. If you have been using version 1.8.0, or a candidate release v1.9.0-rc#, you should upgrade at this time.

New features and enhancements since Version 1.8.0 are summarized here:
http://physics.princeton.edu/pulsar/k1jt/New_Features_1.9.0.txt

A more detailed list of changes since “Release Candidate 4” (wsjtx-1.9.0-rc4) can be found in the Release Notes:
http://physics.princeton.edu/pulsar/k1jt/Release_Notes.txt

WSJT-X Version 1.9.0 permits operation in FT8 DXpedition Mode without callsign restrictions, but not for transmitting in any of the conventional FT8 sub-bands. DXpedition Mode should be used only in rare-entity circumstances in which sustained QSO rates well above 100/hour are expected. Detailed instructions for FT8 DXpedition Mode can found here:
http://physics.princeton.edu/pulsar/k1jt/FT8_DXpedition_Mode.pdf

Upgrading from earlier versions of WSJT-X will be seamless; there is no need to uninstall a previous version or move any files. Please do not continue using any “release candidate” — that is, any beta release with “-rc#” in the version name.

Links to installation packages for Windows, Linux, Macintosh, and Raspbian Jessie are available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/
It may take a short time for the SourceForge site to be updated.

We hope you will enjoy using WSJT-X Version 1.9.0.

— 73, Joe, K1JT, for the WSJT Development Group

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Forwarded by Bunshiro Tamura
———————– Original Message ———————–
From: Joe Taylor
To: WSJT software development
Date: Mon, 7 May 2018 15:39:35 -0400
Subject: [wsjt-devel] Third Public Test of FT8 DXpedition Mode: Early results
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Hi all,

Hearty thanks to everyone who participated in the Third Public Test of FT8 DXpedition Mode!

A number participants and would-be participants reported that propagation was spotty, at best. Nevertheless, at AA7A, G4WJS, K1JT, and K9AN we copied 405 unique callsigns of stations acting as “Hounds”, and at least one “Fox” was worked by 305 of them. Many Hounds worked two or three of the Foxes.

Details of stations worked and calls copied are given in the attached file “logged_calls.txt”. We’re sorry if we missed you, or if propagation was unfavorable for you.

Hounds who followed advice to monitor the “Ping Jockey Relief” chat page understood before start time (1400 UTC) that we had changed operating frequency from 14.090 to 14.115 to avoid most of the 20m activity in the ARI RTTY contest. Soon after 1400 UTC they also learned that W1/KH7Z had some unexpected setup problems and was unable to continue. Consequently W7/KH7Z took over as Fox at 1425 UTC and continued operating until 1600. K1JT was Fox between 1600 and 1700, and G4WJS stepped in for a short bonus run between 1710 and 1750 UTC.

The three Foxes were configured as shown in the following table. The setup at W7/KH7Z is comparable to what will be used at KH1/KH7Z, the Baker Island DXpedition. We operated in ways expected to provide the most thorough tests of the DXpedition Mode software. The low-power, simple-antenna setup at K1JT may be indicative of what can be done from KH1/KH7Z when band conditions are poor.

Call Grid PEP PerSlot Antenna
—————————————
W7/KH7Z DM43 500 W 20 W 3 el
K1JT FN20 100 W 4-9 W Dipole
G4WJS IO91 400 W 16 W 4 el

The attached plot “QSO_rate.pdf” shows the equivalent hourly QSO rate for each 5-minute interval at W7/KH7Z. The measured rates range from 8 to 33 per 5-minute interval, or 96 to 396 QSOs per hour. Several factors acted to suppress the rate at various times. The dip at t=30 minutes was caused by a restart following a program crash. We have identified the reason, and this bug will be easily fixed. After an hour W7/KH7Z started to run out of available Hounds; by the 90-minute mark he had worked 83% of those copied at least once.

This test run has shown that peak QSO rates with FT8 DXpedition Mode can approach 400/hour, and that sustained rates well above 200/hour will be readily achieved in good conditions.

The test also helped us to identify a few relatively minor software bugs that still need to be fixed. One such bug prevented Hounds calling with compound callsigns (e.g., S5/N1YU, VE3GFW/W6, W1/V47KA, W7/VK2IXC, W7/ZL1NA, W9/K9AN) from working the Fox, through no fault of their own. Unknowingly, the Foxes wasted significant time trying to work these stations, thereby suppressing their QSO rates.

All in all, we consider this test run very successful. We hope to be able to release the General Availability WSJT-X Version 1.9.0 before the end of May.

— 73, Joe, K1JT

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Forwarded by Bunshiro Tamura
———————– Original Message ———————–
From: Joe Taylor
To: WSJT software development
Date: Thu, 26 Apr 2018 08:51:40 -0400
Subject: [wsjt-devel] WSJT-X v1.9.0-rc4: Third Public Test of FT8 DXpedition Mode
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The WSJT Development Group is pleased to announce a fourth Release Candidate for WSJT-X Version 1.9.0.

A third beta release, v1.9.0-rc3, has been tested in the field over the past several weeks. These tests included a public test of FT8 DXpedition Mode conducted on April 7. A few additional bugs were identified and corrected, and the -rc4 release also includes some minor enhancements.

A General Availability (GA) release of WSJT-X Version 1.9.0 will be announced at a suitable time, probably in the near future. After that you should stop using any -rc# release candidate.

Short list of changes since WSJT-X Version 1.9.0-rc3:

1. Corrected several flaws in Fox and Hound behavior, FT8 DXpedition Mode

2. Decoded CQ messages where a prefix has been used as a suffix now have the DXCC entity name assigned correctly in almost all cases

3. Improved AFC capability for the wider JT65 sub-modes to help with drifting signals

4. Better support for macOS using hi-DPI Retina displays

5. New UDP message that allows external applications to highlight decoded callsigns

6. Main-screen geometry and state of the “splitter” setting between its two text windows is now properly restored after program restart

7. New simulator jt49sim[.exe] replaces jt4sim and jt9sim

8. Correct S/N measurements for the JT9 slow/wide submodes

9. Other minor bug fixes

10. Updated copy of cty.dat

###############################################################################
*Third Public Test of FT8 DXpedition Mode*
——————————————

If you decide to install v1.9.0-rc4, please help us by participating in the third public test of FT8 DXpedition Mode scheduled for Saturday, May 5. Once again, the goal is to simulate a rare-DXpedition pileup by having many stations (“Hounds”) calling and trying to work a designated pseudo-DXpedition station (“Fox”).

Everyone participating in the test must use WSJT-X v1.9.0-rc4. In addition, you must read, understand, and carefully follow the instructions posted here:
http://physics.princeton.edu/pulsar/k1jt/FT8_DXpedition_Mode.pdf
Please be sure to read this document carefully, again. Some details of the operating procedures are different from previous versions.

If you have legitimate access to more than one callsign (spouse, a club call, or whatever) please feel free to call and work each Fox more than once. The more Hounds, the better: we want the test pileup to be as deep as possible.

The third public test will take place as follows, with each session lasting one hour:

Date UTC Frequency Fox Callsign Operator
—————————————————
May 5 1400 14.090 MHz W1/KH7Z N1DG
May 5 1500 14.090 W7/KH7Z AA7A
May 5 1600 14.090 K1JT K1JT

If last-minute instructions are necessary they will be announced on the “Ping Jockey Relief” chat page:
http://www.pingjockey.net/cgi-bin/pingtalkB

As we have done before, we will plan to publish lists of all Hound callsigns copied and those worked by each Fox.
###############################################################################

Installation packages for WSJT-X v1.9.0-rc4 on Windows, Linux, Macintosh, and Raspian Jessie have been posted on the WSJT web site here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html

Scroll down to the bottom of the page to find a link to the installation package for your system.

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/

Please report your test results and any problems to one of the email lists wsjt-devel@lists.sourceforge.net or wsjtgroup@yahoogroups.com. You must be a subscriber in order to post to these lists.

— 73 from Joe, K1JT, for the WSJT Development Group

——————————————————————————
Check out the vibrant tech community on one of the world’s most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
wsjt-devel mailing list
wsjt-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wsjt-devel

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