Documentation updates for On DX Echo Doppler correction mode

Tnx Charlie, G3WDG, and Bob, KA1GT.

Release_Notes.txt

@@ -13,6 +13,19 @@
 Copyright 2001 - 2020 by Joe Taylor, K1JT.
 
 
+		   Release: WSJT-X 2.3.0-rc1
+		         Sept DD, 2020
+		   -------------------------
+
+WSJT-X 2.3.0-rc1 is a beta-quality release candidate for a program
+upgrade that provides a number of new features and capabilities.
+These include:
+
+ - The *On Dx Echo* Doppler compensation method has been modified in
+   response to feedback from Users. Basic functionality is unchanged.
+   See the User Guide (Section 8.1) for more information.
+
+
 		  Release: WSJT-X 2.2.2
 		       June 22, 2020
 		  ---------------------

doc/user_guide/en/vhf-features.adoc

@@ -92,16 +92,14 @@ thing, both stations will have the required Doppler compensation.
 Moreover, anyone else using this option will hear both of you
 without the need for manual frequency changes.
 
-- Select *On Dx Echo* when your QSO partner is not using automated 
+- Select *On Dx Echo* when your QSO partner announces his/her transmit
-Doppler tracking, and announces his/her transmit frequency and listening
+frequency and that they are listening on their own echo
-on their own echo frequency. When clicked, this Doppler method will 
+frequency. When clicked, this Doppler method will set your rig
-set your rig frequency on receive to correct for the mutual Doppler 
+frequency on receive to correct for the mutual Doppler shift. On
-shift.  On transmit, your rig frequency will be set so that your
+transmit, your rig frequency will be set so that your QSO partner will
-QSO partner will receive you on the same frequency as their own echo
+receive you on the same frequency as they receive their own echo.
-at the start of the QSO. As the QSO proceeds, your QSO partner will 
+Sked frequency in this case is set to that announced by your QSO
-receive you on this starting frequency so that they do not have to 
+partner.
-retune their receiver as the Doppler changes.  Sked frequency in this 
-case is set to that announced by your QSO partner.
 
 - Select *Call DX* after tuning the radio manually to find a station,
 with the Doppler mode initially set to *None*. You may be tuning the band

widgets/about.cpp

@@ -21,9 +21,9 @@ CAboutDlg::CAboutDlg(QWidget *parent) :
                          "&copy; 2001-2020 by Joe Taylor, K1JT, Bill Somerville, G4WJS, <br />"
                          "and Steve Franke, K9AN.  <br /><br />"
                          "We gratefully acknowledge contributions from AC6SL, AE4JY,<br />"
-                         "DF2ET, DJ0OT, G3WDG, G4KLA, IV3NWV, IW3RAB, K3WYC, KA6MAL,<br />"
+                         "DF2ET, DJ0OT, G3WDG, G4KLA, IV3NWV, IW3RAB, KA1GT, K3WYC,<br />"
-                         "KA9Q, KB1ZMX, KD6EKQ, KI7MT, KK1D, ND0B, PY2SDR, VE1SKY,<br />"
+                         "KA6MAL, KA9Q, KB1ZMX, KD6EKQ, KI7MT, KK1D, ND0B, PY2SDR,<br />"
-                         "VK3ACF, VK4BDJ, VK7MO, W4TI, W4TV, and W9MDB.<br /><br />"
+                         "VE1SKY, VK3ACF, VK4BDJ, VK7MO, W4TI, W4TV, and W9MDB.<br /><br />"
                          "WSJT-X is licensed under the terms of Version 3 <br />"
                          "of the GNU General Public License (GPL) <br /><br />"
                          "<a href=" WSJTX_STRINGIZE (PROJECT_HOMEPAGE) ">"