Additions to User Guide for v2.2.

doc/user_guide/en/make-qso.adoc

@@ -79,6 +79,7 @@ NOTE: When *Auto-Seq* is enabled the program de-activates *Enable Tx*
 at the end of each QSO.  It is not intended that _WSJT-X_ should make
 fully automated QSOs.
 
+[[CONTEST_MSGS]]
 === Contest Messages
 
 The new FT4, FT8, and MSK144 protocols support special messages optimized
@@ -105,12 +106,17 @@ place of RRR, and the final 73 is optional.
 
  CQ TEST G4ABC IO91
                        G4ABC PA9XYZ JO22
- PA9XYZ 570123 IO91NP
-                       G4ABC R 580071 JO22DB
+ <PA9XYZ> <G4ABC> 570123 IO91NP
+                       <G4ABC> <PA9XYZ> R 580071 JO22DB
  PA9XYZ G4ABC RR73
 
 Either callsign (or both) may have /P appended.
 
+IMPORTANT: Messages conveying signal reports, QSO serial numbers, and
+6-character locators have been changed in _WSJT-X v2.2_ and are *NOT*
+compatible with the formats used in earlier program versions.  Be sure
+to upgrade _WSJT-X_ if you will use *EU VHF Contest* messages.
+
 *ARRL Field Day*
 
  CQ FD K1ABC FN42

doc/user_guide/en/new_features.adoc

@@ -1,15 +1,81 @@
 === New in Version {VERSION}
 
-The most important feature added to _WSJT-X_ since Version 2.0.1 is
-the new *FT4 protocol*, designed especially for radio contesting.  It
-has T/R sequence length 7.5 s, bandwidth 80 Hz, and threshold
-sensitivity -17.5 dB.  Version 2.1.0 also has improvements to FT8
-waveform generation, waterfall and spectrum display, contest logging,
-rig control, the user interface, keyboard shortcuts, UDP messaging for
-inter-program communication, and accessibility, as well as a number of
-more minor enhancements and bug fixes.  We now provide a separate
-installation package for 64-bit Windows Vista and later, offering
-significant improvements in decoding speed.
+*Improvements to decoders*
+
+*FT4:* Corrected bugs that prevented AP (_a priori_) decoding and/or
+multi-pass decoding in some circumstances.  Improved the algorithm for
+AP decoding.
+
+*FT8:* Decoding is now spread over three intervals.  The first starts
+11.8 s into an Rx sequence and typically yields around 85% of the
+possible decodes, so you see all of these decodes much earlier than
+before.  A second processing step starts at 13.5 s, and the final one
+at 14.7 s.  Overall decoding yield on the most crowded bands is
+improved by 10% or more.  Systems with receive latency greater than
+0.2 s will see smaller improvements, but will still see many decodes
+earlier than before.  In FT8 DXpedition Mode, AP decoding is now
+implemented for Hounds when the Fox has a compound callsign.
+
+SNR estimates no longer saturate at +20 dB, and large signals in the
+passband no longer cause the SNR of weaker signals to be biased low.
+Times written to cumulative journal file ALL.TXT are now correct even
+when the decode occurs after the T/R sequence boundary.
+
+*JT4:*  Formatting and display of averaged and Deep Search decodes has
+been cleaned up and made consistent with other modes used for EME and
+extreme weak-signal work at VHF and above.
+
+*JT65:*  Many improvements have been made for averaged and Deep Search
+decodes and their display to the user.  For details see <<VHF_JT65,JT65>>
+in the <<VHF_AND_UP,VHF+ Features>> section.
+
+*WSPR:* Significant improvements have been made to the WSPR decoder's
+sensitivity, its ability to cope with many signals in a crowded
+sub-band, and its rate of undetected false decodes.  We now use up to
+three decoding passes.  Passes 1 and 2 use noncoherent demodulation of
+single symbols and allow for frequency drifts up to ±4 Hz in a
+transmission.  Pass 3 assumes no drift and does coherent block
+detection of up to three symbols.  It also applies bit-by-bit
+normalization of the single-symbol bit metrics, which has proven
+helpful for signals corrupted by artifacts of the subtraction of
+stronger signals and also for LF/MF signals heavily contaminated by
+lightning transients.  With these improvements the number of decodes in a
+crowded WSPR sub-band typically increases by 10 to 15%.
+
+*New message format:* When *EU VHF Contest* is selected, the Tx2 and
+Tx3 messages -- those conveying signal report, serial number, and
+6-character locator -- now use hashcodes for both callsigns .  This
+change is not backward compatible with earlier versions of _WSJT-X_.
+See <<CONTEST_MSGS,Contest Messages>> for details.
+
+*New modes FT4W and FT4S* are now available for use with extremely
+weak signals on the LF and MF bands.
+
+*FT4W* behaves like WSPR but uses different schemes for coding and
+modulation.  On the AWGN (Additive White Gaussian Noise) channel and
+with 2-minute T/R sequences, FT4W is about 1.5 dB more sensitive than
+WSPR, even with the enhanced decoder outlined above.  With 5-minute
+T/R sequences FT4W reaches a threshold sensitivity close to -37 dB.
+
+*FT4S* is desighned for 2-way QSOs on the 620 amd 2200 m bands.  It
+uses the same message formats as FT4, FT8, and MSK144, but different
+coding and modulation and much slower T/R sequences lasting 2 minutes.
+We intend FT4S to be a replacement for JT9 on the LF and MF bands.
+
+*Minor enhancements and bug fixes*
+
+- *Save None* now writes no .wav files to disk, even temporarily.
+
+- An explicit entry *WW Digi Contest* has been added to *Special
+ operating activities* on the *Settings | Advanced* tab.
+
+- The contest mode FT4 now always uses RR73 for the Tx4 message.
+
+- *Keyboard shortcuts* have been added as an aid to accessibility:
+*Alt+R* sets Tx4 message to RR73, *Ctrl+R* sets it to RRR.
+
+- The *Status bar* now displays the number of decodes found in the
+most recent Rx sequence.
 
 === Documentation Conventions
 
@@ -34,6 +100,5 @@ your interests known to the development team.  The project's
 source-code repository can be found at {devrepo}, and communication
 among the developers takes place on the email reflector {devmail}.
 Bug reports and suggestions for new features, improvements to the
-_WSJT-X_ User Guide, etc., may also be sent to the {wsjt_yahoo_group}
-email reflector.  You must join the relevant group before posting to
-either email list.
+_WSJT-X_ User Guide, etc., may be sent there as well.  You must join
+the group before posting to the email list.

doc/user_guide/en/vhf-features.adoc

@@ -1,6 +1,5 @@
-_WSJT-X_ v{VERSION_MAJOR}.{VERSION_MINOR} supports a number of
-features designed for use on the VHF and higher bands.  These features
-include:
+_WSJT-X_ supports a number of features designed for use on the VHF and
+higher bands.  These features include:
 
 - *FT8*, a mode designed for making fast QSOs with weak, fading
 signals
@@ -155,6 +154,7 @@ QSO using submode JT4F.
 
 image::JT4F.png[align="center",alt="JT4F"]
 
+[[VHF_JT65]]
 === JT65
 
 In many ways JT65 operation on VHF and higher bands is similar to HF