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More updates for v1.9.0 User Guide.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8525 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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@ -1,9 +1,10 @@
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=== AP Decoding
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The _WSJT-X_ decoders for QRA64 and FT8 include optional procedures
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that use naturally accumulating information during a minimal QSO.
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This _a priori_ (AP) information increases sensitivity of the decoder
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by up to 4 dB, at the cost of a slightly higher rate of false decodes.
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The _WSJT-X_ decoders for JT65, QRA64, and FT8 include optional
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procedures that use naturally accumulating information during a
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minimal QSO. This _a priori_ (AP) information increases sensitivity
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of the decoder by up to 4 dB, at the cost of a slightly higher rate of
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false decodes.
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For example: when you decide to answer a CQ, you already know your own
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callsign and that of your potential QSO partner. The software
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@ -9,6 +9,8 @@ situations
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- Decoding improvements for JT65 mode, including _a priori_ (AP)
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decoding when VHF/UHF/Microwave features are enabled
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- Optional Auto-Sequencing in JT4, JT9, and JT65 when VHF/UHF/Microwave features are enabled
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- Better suppression of low-confidence false decodes generated by AP
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decoding in FT8 mode
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@ -8,6 +8,8 @@ signals
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- *JT9* fast modes, useful for scatter propagation on VHF bands
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- *JT65*, widely used for EME on VHF and higher bands
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- *QRA64*, a mode for EME using a "`Q-ary Repeat Accumulate`" code,
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a low-density parity-check (LDPC) code using a 64-character symbol
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alphabet
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@ -24,6 +26,8 @@ propagation
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- *Doppler tracking*, which becomes increasingly important for EME
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on bands above 1.2 GHz.
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- Optional *Auto-Sequencing* in JT4, JT9, and JT65 as well as FT8 and QRA64.
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[[VHF_SETUP]]
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=== VHF Setup
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@ -164,8 +168,9 @@ shorthand messages for RO, RRR, and 73. These messages are always
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enabled for reception; they will be automatically generated for
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transmission if you check the shorthand message box *Sh*.
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Be sure to check *Deep* on the *Decode* menu; you may optionally
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include *Enable averaging* and *Deep search*.
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*Deep* on the *Decode* menu will be automatically selected. You may
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optionally include *Enable averaging*, *Enable Deep search*, and
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*Enable AP*.
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The following screen shot shows three transmissions from a 144 MHz EME
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QSO using submode JT65B and shorthand messages. Take note of the
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