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These documentation source files are not the one true version, just a copy for testing purposes. DO NOT EDIT THESE FILES. To use this on Windows you will need a working asciidoc installation and the path to it must be included in your CMAKE_PREFIX_PATH (probably via a local CMake tool chain file). At the time of writing the official asciidoc package does not work on Windows. The latest development master does however work, it can be downloaded as a snapshot ZIP archive from here: https://github.com/asciidoc/asciidoc/archive/master.zip git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5316 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
44 lines
2.3 KiB
Plaintext
44 lines
2.3 KiB
Plaintext
// Status=review
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_WSJT-X_ is a computer program designed to facilitate basic amateur
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radio communication using very weak signals. The first four letters in
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the program name stand for “Weak Signal communication by K1JT,” while
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the suffix “-X” indicates that _WSJT-X_ started as an extended (and
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experimental) branch of the program _WSJT_.
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_WSJT-X_ currently offers two protocols or “modes,” JT65 and JT9.
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Both are designed for making reliable, confirmed QSOs under extreme
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weak-signal conditions. They use nearly identical message structure
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and source encoding. JT65 was designed for EME (“moonbounce”) on the
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VHF/UHF bands and has also proven very effective for worldwide QRP
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communication on the HF bands. JT9 is optimized for the LF, MF, and
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lower HF bands. It is about 2 dB more sensitive than JT65
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while using less than 10% of the bandwidth. Both modes use one-minute
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timed sequences of alternating transmission and reception, so a
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minimal QSO takes four to six minutes — two or three transmissions by
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each station, one sending in odd UTC minutes and the other even. On
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the HF bands, world-wide QSOs are possible with power levels of a few
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watts and compromise antennas.
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_WSJT-X_ can display a passband as large as 5 kHz and provides
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dual-mode reception of both JT65 and JT9 signals. If your receiver can
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be configured with at least 4 kHz bandwidth in USB mode, you can set
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the dial frequency to one of the standard JT65 frequencies — for
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example, 14.076 MHz for the 20-meter band — and display the full JT65
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and JT9 sub-bands simultaneously on the waterfall. You can then make
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QSOs in both modes using nothing more than mouse clicks.
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Plans for future program development call for _WSJT-X_ and _WSJT_ to
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merge together. _WSJT-X_ will gradually acquire the additional modes
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JT4, FSK441, and ISCAT that are now supported in _WSJT_. The entire
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WSJT-related effort is an open-source project, released under the
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{gnu_gpl} (GPL). If you have programming or
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documentation skills or would like to contribute to the project in
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other ways, please make your interests known to the development team.
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The project’s source-code repository can be found at {devsvn}, and
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most communication among the developers takes place on the email
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reflector {devmail}. User-level questions and answers, and general
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communication among users is found on the {wsjt_yahoo_group} email
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reflector.
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