Hello All.
I have downloaded the new Windows 10 64 bit 2.3.0-rc1 and have installed it
on my Windows 10 64 bit computer. First impressions are very good with the
new modes. Received VK4YB who was using FST4 120 sec periods and also on
FST4W 120 sec periods this morning on 630 meters.
I noticed one bug in the settings/Colors tab. In the Decode Highlighting
section, If I try and left click and drag one of the color highlighting
settings up or down the list, it disappears rather than set it at the new
position to try and prioritize the colorization.
Thanks and 73,
Jay KA9CFD
-----Original Message-----
From: Joe Taylor <j...@princeton.edu>
Sent: Sunday, September 27, 2020 20:23
To: WSJT software development <wsjt-devel@lists.sourceforge.net>
Subject: [wsjt-devel] Release Candidate: WSJT-X 2.3.0-rc1
The first public candidate release of WSJT-X 2.3.0 is now available for
download and use by beta testers. This release is your first chance to try
two new modes designed especially for use on the LF and MF bands, and to
provide feedback to the WSJT Development Team. The new modes are:
- FST4, for 2-way QSOs. Options for sequence lengths from 15 seconds
to 30 minutes, with threshold sensitivities from -20.7 to -43.2 dB in
a 2500 Hz reference bandwidth.
- FST4W, for WSPR-like transmissions. Sequence lengths from 2 minutes
to 30 minutes, threshold sensitivities from -32.8 to -44.8 dB.
FST4-60 is about 1.7 dB more sensitive than JT9, largely because it uses
multi-symbol block detection where appropriate. With AP decoding in FST4 the
advantage can be as much as 4.7 dB. Additional sensitivity details with
respect to path Doppler spread are illustrated in the following graph
comparing JT9 and FST4-60:
https://physics.princeton.edu/pulsar/k1jt/jt9_vs_fst4.pdf
FST4W-120 is about 1.4 dB more sensitive than WSPR, and FST4W submodes with
longer transmissions have proportionally better sensitivity.
Decoding probabilities are plotted as a function of SNR on the additive
white Gaussian noise (AWGN) channel for WSPR and all FST4W submodes
here: https://physics.princeton.edu/pulsar/k1jt/wspr_vs_fst4w.pdf
Tests over the past several months have shown FST4 and FST4W frequently
spanning intercontinental distances on the 2200 m and 630 m bands.
Further details and operating hints can be found in the "Quick-Start Guide
to FST4 and FST4W":
https://physics.princeton.edu/pulsar/k1jt/FST4_Quick_Start.pdf
We strongly recommend that users of JT9 and WSPR on the LF and MF bands
should migrate to the more sensitive modes FST4 and FST4W.
Links to installation packages for Windows, Linux, and Macintosh are
available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html
Scroll down to find "Candidate release: WSJT-X 2.3.0-rc1".
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.
WSJT-X is licensed under the terms of Version 3 of the GNU General
Public License (GPL). Development of this software is a cooperative
project to which many amateur radio operators have contributed. If you
use our code, please have the courtesy to let us know about it. If you
find bugs or make improvements to the code, please report them to us in
a timely fashion.
We hope you will enjoy using this beta release of WSJT-X 2.3.0. Please
report bugs by following instructions found here in the User Guide:
http://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-2.3.0-rc1.
html#_bug_reports
-- 73 from Joe, K1JT, Steve, K9AN, and Bill, G4WJS
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