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WSJT-X
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Add User Guide text on WSPR band-hopping. 

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6109 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2015-11-17 14:42:16 +00:00
parent 041380aa01
commit 678811cfd4
5 changed files with 57 additions and 22 deletions
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2
doc/common/license.adoc
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@ -1,5 +1,5 @@
include::./links.adoc[]
_{prog}_ is free software: you can redistribute it and/or modify
_{prog}_ is free software: you may redistribute and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

3
doc/user_guide/controls-functions-wide-graph.adoc
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@ -42,9 +42,6 @@ is the average spectrum since the start of the present UTC minute.
*Linear Avg* is useful in JT4 mode, especially when short-form
messages are used.
for JT9 or JT65; it is intended for use
with the yet-to-be implemented JT4 mode.)
- Four sliders control reference levels and scaling for waterfall
colors and the spectrum plot. Values around midscale are usually
about right, depending on the input signal level, the chosen palette,

22
doc/user_guide/new_features.adoc
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@ -27,18 +27,10 @@ particular radios have been removed.
Much work has already been done on Version 1.7 of _WSJT-X_. (Up to
now this branch has been called v1.6.1.) More than 100 people have
been building this version for themselves, as development progresses,
and reporting on their experiences. The next release will likely have
the following features not present in Version 1.6.0, and perhaps
others as well:
- *JTMSK* mode, intended for meteor scatter, ionospheric scatter,
aircraft scatter, and the like. Unlike the FSK441, ISCAT, and JTMS
modes present in the older program _WSJT_, *JTMSK* uses forward error
correction and structured messages identical to those in JT4, JT9, and
JT65.
- A significantly improved decoder for JT65, especially advantageous
when used in crowded HF bands. Starting with Version 1.7, _WSJT-X_
will no longer use the patented, closed-source Koetter-Vardy
algorithm.
been building this version for themselves as development progresses,
and reporting on their experiences. The next release will offer
several ``fast modes'' intended for meteor and ionospheric scatter,
including a new FEC-enhanced mode called *JTMSK*. It will also have a
significantly improved JT65 decoder, especially advantageous when used
in crowded HF bands. Starting with Version 1.7, _WSJT-X_ will no
longer use the patented, closed-source Koetter-Vardy algorithm.

1
doc/user_guide/wsjtx-main.adoc
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@ -131,7 +131,6 @@ include::tutorial-example2.adoc[]
== WSPR Mode
include::wspr.adoc[]
[[VHF_AND_UP]]
== VHF+ Features
include::vhf-features.adoc[]

51
doc/user_guide/wspr.adoc
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@ -19,7 +19,54 @@ transmitting) and activate the *Enable Tx* button.
- Select your Tx power (in dBm) from the drop-down list.
- To enable automatic band-hopping, check the indicated box and click
*Schedule* to select the bands you will use at each time of day.
=== Band Hopping
WSPR mode allows those with CAT-controlled radios to investigate
propagation on many bands without user intervention. Coordinated
hopping enables a sizable group of stations around the world to move
together from band to band, thereby maximizing the chances of
identifying open propagation paths.
- To enable automatic band-hopping, check the *Band Hopping* box on
the main window.
- Click *Schedule* to open the *WSPR Band Hopping* window, and select
the bands you wish to use at each time of day.
image::images/band_hopping.png[align="center",alt="Band Hopping"]
- Band-switching occurs after each 2-minute interval. Preferred bands
are identified with time slots in a repeating 20-minute cycle,
according to the following table:
[width="73%",cols="11,10*^",align="center",options="header"]
|======================================================================
|*Band:* |160 | 80 | 60 | 40 | 30 | 20 | 17 | 15 | 12 | 10
|*UTC minute:* | 00 | 02 | 04 | 06 | 08 | 10 | 12 | 14 | 16 | 18
| | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38
| | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58
|======================================================================
- If the preferred band is not active according to your band-hopping
schedule, a band will be selected at random from among the active
bands.
- If the box labeled *Tune* is checked for a particular band, _WSJT-X_
transmits an unmodulated carrier for several seconds just after
switching to that band and before the normal Rx or Tx period
starts. This feature can be used to activate an automatic antenna
tuner (ATU) to tune a multi-band antenna to the newly selected band.
- Depending on your station and antenna setup, band changes might
require other switching besides retuning your radio. To make this
possible in an automated way, whenever _WSJT-X_ executes a successful
band-change command to a CAT-controlled radio, it looks for a file
named +user_hardware.bat+, +user_hardware.cmd+, +user_hardware.exe+,
or +user_hardware+ in the working directory. If one of these is found,
_WSJT-X_ tries to execute the command
user_hardware nnn
- In the above command +nnn+ is the band-designation wavelength in
meters. You will need to write your own program, script, or batch file
to do the necessary switching at your station.