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[ Source: wsjtx-improved  ]

Package: wsjtx-improved (3.1.0+260228+repack-1 and others)

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Weak-signal amateur radio communications (improved PLUS version)

WSJT-X implements amateur radio communication protocols or "modes" called FST4, FST4W, FT4, FT8, JT4, JT9, JT65, Q65, MSK144, and WSPR, as well as one called Echo for detecting and measuring your own radio signals reflected from the Moon. These modes were all designed for making reliable, confirmed QSOs under extreme weak-signal conditions.

JT4, JT9, and JT65 use nearly identical message structure and source encoding (the efficient compression of standard messages used for minimal QSOs). They use timed 60-second T/R sequences synchronized with UTC. JT4 and JT65 were designed for EME ("moonbounce") on the VHF/UHF/microwave bands. JT9 is optimized for the MF, and HF bands. It is about 2 dB more sensitive than JT65 while using less than 10% of the bandwidth. Q65 offers submodes with a wide range of T/R sequence lengths and tone spacings.

FT4 and FT8 are operationally similar but use T/R cycles only 7.5 and 15 s long, respectively. MSK144 is designed for Meteor Scatter on the VHF bands. These modes offer enhanced message formats with support for nonstandard callsigns and some popular contests.

FST4 and FST4W are designed particularly for the LF and MF bands. On these bands their fundamental sensitivities are better than other WSJT-X modes with the same sequence lengths, approaching the theoretical limits for their rates of information throughput. FST4 is optimized for two-way QSOs, while FST4W is for quasi-beacon transmissions of WSPR-style messages. FST4 and FST4W do not require the strict, independent time synchronization and phase locking of modes like EbNaut.

WSPR mode implements a protocol designed for probing potential propagation paths with low-power transmissions. WSPR is fully implemented within WSJT-X, including programmable "band-hopping".

wsjt-x_improved is an enhanced version of the excellent WSJT-X software by Joe Taylor K1JT, Steve Franke K9AN, Bill Somerville G4WJS and others.

Additional features in the "improved PLUS" version include: 

 * Highlighting of CQ and 73/RR73 messages
 * Mode buttons make it easy to switch between the frequently used modes
 * Band Hopping for FT8, FT4, Q65 and MSK144
 * FT8 and FT4 decoders optimized for DX
 * False Decodes Reduction (FDR)
 * "Wait and Reply" and "Wait and Call"
 * Full Duplex Mode (useful when working via satellite)

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Download wsjtx-improved

Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 3.1.0+260228+repack-1 3,156.8 kB19,787.0 kB [list of files]
amd64 3.1.0+260228+repack-1+b1 3,285.0 kB17,031.0 kB [list of files]
arm64 3.1.0+260228+repack-1+b1 2,936.7 kB17,182.0 kB [list of files]
armhf 3.1.0+260228+repack-1+b1 2,888.5 kB14,964.0 kB [list of files]
hppa (unofficial port) 3.1.0+260228+repack-1 3,165.2 kB18,003.0 kB [list of files]
i386 3.1.0+260228+repack-1+b1 3,320.0 kB17,148.0 kB [list of files]
loong64 3.1.0+260228+repack-1+b1 3,086.3 kB17,935.0 kB [list of files]
m68k (unofficial port) 3.1.0+260226-OFC+repack-1 2,996.9 kB16,674.0 kB [list of files]
ppc64 (unofficial port) 3.1.0+260228+repack-1+b1 3,156.2 kB20,120.0 kB [list of files]
ppc64el 3.1.0+260228+repack-1+b1 3,237.0 kB19,741.0 kB [list of files]
riscv64 3.1.0+260228+repack-1 3,173.1 kB14,580.0 kB [list of files]
s390x 3.1.0+260228+repack-1+b1 3,162.1 kB16,671.0 kB [list of files]
sh4 (unofficial port) 3.1.0+260226-OFC+repack-1 3,419.4 kB17,099.0 kB [list of files]
sparc64 (unofficial port) 3.1.0+260228+repack-1+b1 2,965.7 kB53,664.0 kB [list of files]
x32 (unofficial port) 2.7.1~devel241014-RC7+repack-1 2,609.3 kB10,737.0 kB [list of files]