2020-09-23 15:03:33 -04:00
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[[NEW_FEATURES]]
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2018-12-06 20:44:19 -05:00
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=== New in Version {VERSION}
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2015-11-13 15:26:41 -05:00
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2021-03-04 09:26:37 -05:00
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_WSJT-X 2.4.0_ introduces *Q65*, a new digital protocol designed for
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minimal two-way QSOs over especially difficult propagation paths. On
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paths with Doppler spread more than a few Hz, the weak-signal
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performance of Q65 is the best among all WSJT-X modes.
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Q65 uses message formats and sequencing identical to those used in
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FST4, FT4, FT8, and MSK144. Submodes are provided with a wide variety
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of tone spacings and T/R sequence lengths 15, 30, 60, 120, and 300 s.
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A new, highly reliable list-decoding technique is used for messages
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that contain previously copied message fragments. Message averaging
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is provided for situations where single transmissions are too weak or
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signal enhancements too sparse for a signal to be decoded.
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