Updates to User Guide.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8481 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

doc/common/links.adoc

@@ -68,7 +68,7 @@ d). Edit lines as needed. Keeping them in alphabetic order help see dupes.
 :fmt_k5cm: http://www.k5cm.com/[FMT Event Info]
 :fmt_wspr: http://www.physics.princeton.edu/pulsar/K1JT/FMT_User.pdf[Accurate Frequency Measurements with your WSPR Setup]
 :ft8_tips: http://www.physics.princeton.edu/pulsar/K1JT/FT8_Operating_Tips.pdf[here]
-:ft8_DXped: http://physics.princeton.edu/pulsar/k1jt/FT8_DXpedition_Mode.pdf[here]
+:ft8_DXped: http://physics.princeton.edu/pulsar/k1jt/FT8_DXpedition_Mode.pdf[FT8 DXpedition Mode]
 :gnu_gpl: http://www.gnu.org/licenses/gpl-3.0.txt[GNU General Public License]
 :homepage: http://physics.princeton.edu/pulsar/K1JT/[WSJT Home Page]
 :hrd: http://www.hrdsoftwarellc.com/[Ham Radio Deluxe]

doc/user_guide/en/faq.adoc

@@ -1,6 +1,6 @@
 ////
 Questions:
- Should be short one liners ending with ?::
+ Should be short one liners (in the .adoc file) ending with ?::
  If your question is too long for one line, consider multiple questions or rephrase
 
 Answers:
@@ -47,8 +47,7 @@ location for each instance of _WSJT-X_.
  wsjtx --rig-name=TS2000
  wsjtx --rig-name=FT847
 
-When setting up rig control through _Omni-Rig_, something goes wrong
-when I click *Test CAT*.  What can I do about it?::
+Rig control through _OmniRig_ seems to fail when I click *Test CAT*.  What can I do about it?::
 
 _Omni-Rig_ apparently has a bug that appears when you click *Test
 CAT*.  Forget using *Test CAT* and just click *OK*.  _Omni-Rig_ then

doc/user_guide/en/install-mac.adoc

@@ -13,6 +13,11 @@ Take note also of the following:
 * Use the Mac's *Audio MIDI Setup* utility to configure your sound
 card for 48000 Hz, two-channel, 16-bit format.
 
+NOTE: If you are using macOS with an external audio device and find
+that Tx audio spontaneously switches to the motherboard sound device
+after a few transmissions, try setting the sample rate to 44100 Hz
+rather than the otherwise recommended 48000 Hz.
+
 * Use *System Preferences* to select an external time source to keep
 your system clock synchronized to UTC.
 

doc/user_guide/en/new_features.adoc

@@ -3,7 +3,8 @@
 For quick reference, here's a short list of features and capabilities
 added to _WSJT-X_ since Version 1.8.0:
 
-- New *FT8 DXpedition Mode* to facilitate high-rate QSOs in a pileup
+- New *FT8 DXpedition Mode* to facilitate high QSO rates in pileup
+situations
 
 - Decoding improvements for JT65 mode, including _a priori_ (AP)
 decoding when VHF/UHF/Microwave features are enabled
@@ -15,15 +16,15 @@ decoding in FT8 mode
 
 - Minor adjustments to auto-sequencing behavior
 
-- Improved Doppler control features for EME
+- More flexible Doppler control features for EME
 
 - Improved waterfall sensitivity for very weak signals
 
 - Automatic real-time forwarding of logged information to _N1MM Logger+_
 
-- Expanded and improved UDP messages for companion programs
+- Expanded and improved UDP messages sent to companion programs
 
-- Bug fixes and minor tweaks to user interface
+- Bug fixes and other minor tweaks to user interface
 
 === Documentation Conventions
 

doc/user_guide/en/tutorial-example3.adoc

@@ -58,9 +58,15 @@ NOTE: Further helpful tips on FT8 operating procedures are available
 
 - This special operating mode enables DXpeditions to make FT8 QSOs at
 very high rates.  Both stations must use _WSJT-X_ Version 1.9 or
-later.  Detailed operating instructions can be found {ft8_DXped}.
-Do not try to use DXpedition mode without reading these instructions
-carefully!
+later.  Detailed operating instructions for {ft8_DXped} are available
+online.  Do not try to use DXpedition mode without reading these
+instructions carefully!
+
+IMPORTANT: FT8 DXpedition mode is suitable for use only by legitimate
+DXpeditions and those attempting to work them. Do not try to use
+DXpedition mode for normal FT8 operation.  Do not use it in the
+conventional FT8 subbands.  And especially, do not use the
+multi-signal capability unless you are a DXpedition.
 
 IMPORTANT: When finished with this Tutorial, don't forget to re-enter
 your own callsign as *My Call* on the *Settings | General* tab.

doc/user_guide/en/vhf-features.adoc

@@ -77,13 +77,16 @@ becomes visible when you check *Doppler tracking*.
 
 image::Astronomical_data.png[align="center",alt="Astronomical data"]
 
-Three different types of Doppler tracking are provided:
+Five different types of Doppler tracking are provided:
 
 - Select *Full Doppler to DX Grid* if you know your QSO partner's locator
 and he/she will not be using any Doppler control.
 
-- Select *Receive only* to enable EME Doppler tracking of your receive
-frequency to a specific locator. Your Tx frequency will remain fixed.
+- Select *Own Echo* to enable EME Doppler tracking of your receive
+frequency to your own echo frequency. Your Tx frequency will remain fixed.
+and is set to the Sked frequency.  This mode can be used when announcing 
+your CQ call on a specific frequency and listening on your own echo
+frequency.  It can also be used for echo testing with Echo mode.
  
 - Select *Constant frequency on Moon* to correct for your own one-way
 Doppler shift to or from the Moon.  If your QSO partner does the same
@@ -91,6 +94,16 @@ 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* ...
+
+- Select *Call DX* after tuning the radio manually to find a station,
+with the Doppler mode initally set to *None*. You may be tuning the band
+looking for random stations, or to a frequency where a station has been
+seen on an SDR display.  It is usually necessary to hold down the Ctrl key
+while tuning the radio. From the moment *Call DX* is pressed, your 
+transmit frequency is set so that your echo will fall on the same 
+frequency you (and the DX station) are listening. 
+
 - See <<ASTRODATA,Astronomical Data>> for details on the quantities
 displayed in this window.