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More updates for v1.9.0 User Guide.

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8525 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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Joe Taylor
2018-02-22 15:55:07 +00:00
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doc/user_guide/en/decoder_notes.adoc
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=== AP Decoding
The _WSJT-X_ decoders for QRA64 and FT8 include optional procedures
that use naturally accumulating information during a minimal QSO.
This _a priori_ (AP) information increases sensitivity of the decoder
by up to 4 dB, at the cost of a slightly higher rate of false decodes.
The _WSJT-X_ decoders for JT65, QRA64, and FT8 include optional
procedures that use naturally accumulating information during a
minimal QSO. This _a priori_ (AP) information increases sensitivity
of the decoder by up to 4 dB, at the cost of a slightly higher rate of
false decodes.
For example: when you decide to answer a CQ, you already know your own
callsign and that of your potential QSO partner. The software