Many editorial changes to User Guide.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7235 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2016-10-26 15:36:22 +00:00
parent cddd34c351
commit ddeb1bab4e
16 changed files with 76 additions and 59 deletions

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@ -67,6 +67,7 @@ set (UG_IMGS
images/config-menu.png
images/decode-menu.png
images/decodes.png
images/download_samples.png
images/file-menu.png
images/freemsg.png
images/help-menu.png

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@ -2,7 +2,7 @@
The _WSJT_ project was started in 2001. Since 2005 it has been an
Open Source project, and it now includes programs _WSJT_, _MAP65_,
_WSPR_, _WSJT-X_, and _WSPR-X_. All all code is licensed under the
_WSPR_, _WSJT-X_, and _WSPR-X_. All code is licensed under the
GNU Public License (GPL). Many users of these programs, too numerous
to mention here individually, have contributed suggestions and advice
that have greatly aided the development of _WSJT_ and its sister
@ -12,7 +12,7 @@ For _WSJT-X_ in particular, we acknowledge contributions from *AC6SL,
AE4JY, DJ0OT, G3WDG, G4KLA, G4WJS, IV3NWV, IW3RAB, K3WYC, K9AN,
KA6MAL, KA9Q, KB1ZMX, KD6EKQ, KI7MT, KK1D, ND0B, PY2SDR, VK3ACF,
VK4BDJ, VK7MO, W4TI, W4TV, and W9MDB*. Each of these amateurs has helped to
bring the programs design, code, tetsting, and/or documentation to
bring the programs design, code, testing, and/or documentation to
its present state.
Most of the color palettes for the _WSJT-X_ waterfall were copied from

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@ -23,7 +23,7 @@ Tx=Rx* to make the frequencies always track one another. The
on-the-air frequency of your lowest JT9 or JT65 tone is the sum of
dial frequency and audio Tx frequency.
IMPORTANT: In general we do not recommend using *Lock Tx=Rx* since it
TIP: In general we do not recommend using *Lock Tx=Rx* since it
encourages poor radio etiquette when running a frequency. With *Lock
Tx=Rx* checked, your own Tx frequency will move around following your
callers.
@ -33,6 +33,6 @@ inserted automatically. Typical reports for the various modes fall in
the range 30 to +20 dB. Remember that JT65 reports saturate at an
upper limit of -1 dB.
IMPORTANT: Consider reducing power if your QSO partner reports your
TIP: Consider reducing power if your QSO partner reports your
signal above -5 dB in one of the _WSJT-X_ slow modes. These are
supposed to be weak signal modes!

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@ -24,10 +24,10 @@ if the rig is detected to be in *Split* mode. The circle becomes red
if you have requested CAT control but communication with the radio has
been lost.
IMPORTANT: Many Icom rigs cannot be queried for split status, current
VFO or split transmit frequency. Consequently you should not change
the current VFO, split status or frequency using controls on the radio
when using _WSJT-X_ with an Icom radio.
TIP: Many Icom rigs cannot be queried for split status, current VFO or
split transmit frequency. When using _WSJT-X_ with such radios you
should not change the current VFO, split status or dial frequency
using controls on the radio.
* If *DX Grid* contains a valid Maidenhead locator, the corresponding
great-circle azimuth and distance from your location are displayed.
@ -37,4 +37,5 @@ future reference. Click *Add* to insert the present call and locator
in the database; click *Lookup* to retrieve the locator for a
previously stored call. This feature is mainly useful for situations
in which the number of active stations is modest and reasonably
stable, such as EME (Earth-Moon-Earth) communication.
stable, such as EME (Earth-Moon-Earth) communication. The callsign
file name is `CALL3.TXT`.

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@ -46,7 +46,8 @@ messages are used.
- 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,
and your own preferences.
and your own preferences. Hover the mouse over a control to display a
tip reminding you of its function.
- *Smoothing* is active only when *Linear Average* has been selected.
Smoothing the displayed spectrum over more than one bin can enhance
@ -80,7 +81,7 @@ to compress the spectral display.
spectra.
- *Smooth* values greater than 0 apply running averages to the plotted
spectra, therebu smoothing the curves over multiple bins.
spectra, thereby smoothing the curves over multiple bins.
- Label *N* shows the number of echo pulses averaged.

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@ -14,7 +14,7 @@ installation directory and its subdirectories.
directory +
`C:\Users\<username>\AppData\Local\WSJT-X`.
IMPORTANT: Your computer may be configured so that this directory is
TIP: Your computer may be configured so that this directory is
"`invisible`". It's there, however, and accessible. An alternative
(shortcut) directory name is `%LOCALAPPDATA%\WSJT-X\`.

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@ -31,7 +31,7 @@ lie in the range 30 to 1 dB, and values are significantly compressed
above about -10 dB. JT9 supports the extended range 50 to +49 dB and
assigns more reliable numbers to relatively strong signals.
IMPORTANT: Signals become visible on the waterfall around S/N = 26 dB
NOTE: Signals become visible on the waterfall around S/N = 26 dB
and audible (to someone with very good hearing) around 15
dB. Thresholds for decodability are around -23 dB for JT4, 24 dB for
JT65, 26 dB for JT9.
@ -109,11 +109,10 @@ In each case, the compound callsign is treated as *Type 2* because the
add-on prefix or suffix is _not_ one of those in the fixed list. Note
that a second callsign is never permissible in these messages.
IMPORTANT: Remember that during a transmission your transmitted message is
always displayed in the first label on the *Status Bar*, highlighted
in yellow. It is displayed there exactly as another station will
receive it. Be sure to check that you are actually transmitting the
message you wish to send!
TIP: During a transmission your outgoing message is displayed in the
first label on the *Status Bar* and shown exactly as another station
will receive it. You can check to see that you are actually
transmitting the message you wish to send.
QSOs involving *Type 2* compound callsigns might look like either
of the following sequences
@ -138,7 +137,7 @@ and possibly also in a 73 transmission, as may be required by
licensing authorities. Other transmissions during a QSO may use the
standard structured messages without callsign prefix or suffix.
IMPORTANT: If you are using a compound callsign, you may want to
TIP: If you are using a compound callsign, you may want to
experiment with the option *Message generation for type 2 compound
callsign holders* on the *Settings | General* tab, so that messages
will be generated that best suit your needs.
@ -159,6 +158,6 @@ as the following checklist:
- Radio filters centered and set to widest available passband (up to 5 kHz).
IMPORTANT: Remember that JT4, JT9, J65, and WSPR generally do not
require high power. Under most HF propagation conditions, QRP is the
norm.
TIP: Remember that in many circumstances JT4, JT9, JT65, and WSPR do
not require high power. Under most HF propagation conditions, QRP is
the norm.

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@ -97,30 +97,32 @@ Still to come ...
Table 1 provides a brief summary parameters for the slow modes in
_WSJT-X_. Parameters K and r specify the constraint length and rate
of the convolutional codes; n and k give the sizes of the (equivalent)
block codes; Q is the alphabet size for the information-carrying
channel symbols; Mod, Baud, and BW specify the modulation type, keying
rate, and occupied bandwidth; fSync is the fraction of transmitted
energy devoted to synchronizing symbols; TxT is the transmission
duration, and S/N is the signal-to-noise ratio (in a 2500 Hz reference
bandwidth) above which the probability of decoding is 50% or higher.
of the convolutional codes; n and k specify the sizes of the
(equivalent) block codes; Q is the alphabet size for the
information-carrying channel symbols; Sync Energy is the fraction of
transmitted energy devoted to synchronizing symbols; and S/N Threshold
is the signal-to-noise ratio (in a 2500 Hz reference bandwidth) above
which the probability of decoding is 50% or higher.
[[SLOW_TAB]]
.Parameters of Slow Modes
[width="90%",cols="3h,^3,^2,^1,^2,^2,^2,^2,^2,^2",frame=topbot,options="header"]
|===============================================================================
|Mode |FEC Type |(n,k) | Q| Mod | Baud |BW (Hz)|fSync|TxT (s)|S/N (dB)
|JT4A |K=32, r=1/2|(206,72)| 2| 4-FSK| 4.375| 17.5 | 0.50| 47.1 | -23
|JT9A |K=32, r=1/2|(206,72)| 8| 9-FSK| 1.736| 15.6 | 0.19| 49.0 | -27
|JT65A |Reed Solomon|(63,12) |64|65-FSK| 2.692| 177.6 | 0.50| 46.8 | -25
|QRA64A|Q-ary Repeat Accumulate|(63,12) |64|64-FSK| 1.736| 111.1 | 0.25| 48.4 | -26
| WSPR |K=32, r=1/2|(162,50)| 2| 4-FSK| 1.465| 5.9 | 0.50|110.6 | -29
|Mode |FEC Type |(n,k) | Q|Modulation type|Keying rate (Baud)|Bandwidth (Hz)
|Sync Energy|Tx Duration (s)|S/N Threshold (dB)
|JT4A |K=32, r=1/2|(206,72)| 2| 4-FSK| 4.375| 17.5 |
0.50| 47.1 | -23 |JT9A |K=32, r=1/2|(206,72)| 8| 9-FSK| 1.736| 15.6 |
0.19| 49.0 | -27 |JT65A |Reed Solomon|(63,12) |64|65-FSK| 2.692| 177.6
| 0.50| 46.8 | -25 |QRA64A|Q-ary Repeat Accumulate|(63,12) |64|64-FSK|
1.736| 111.1 | 0.25| 48.4 | -26 | WSPR |K=32, r=1/2|(162,50)| 2|
4-FSK| 1.465| 5.9 | 0.50|110.6 | -29
|===============================================================================
Submodes of the JT4, JT9, JT65, and QRA64 protocols offer wider tone
spacings that may be desirable for channels causing significant
Doppler spread. Table 2 summarizes the tone spacings, bandwidths, and
threshold sensitivities of the various submodes.
Submodes of JT4, JT9, JT65, and QRA64 offer wider tone spacings for
circumstances that may require them, such significant Doppler spread.
Table 2 summarizes the tone spacings, bandwidths, and approximate
threshold sensitivities of the various submodes when spreading is
comparable to tone spacing.
[[SLOW_SUBMODES]]
.Parameters of Slow Submodes

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@ -11,6 +11,10 @@ most purposes a good setting is 6 or 7.
decodes using Deep Search. Higher numbers will display results
with lower confidence levels.
- Check *MSK144 Contest Mode* to cause generation and auto-sequencing
of MSK144 messages with four-character grid locators in place of signal
reports.
- Check *Two-pass decoding* to enable a second decoding pass after
signals producing first-pass decodes have been subtracted from the
received data stream.

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@ -8,14 +8,15 @@ Select the *Audio* tab to configure your sound system.
*Output*. Usually the *Mono* settings will suffice, but in special
cases you can choose *Left*, *Right*, or *Both* stereo channels.
- Be sure that your audio device is configured to sample at 48000 Hz,
16 bits.
IMPORTANT: If you select the audio output device that is also your
computer's default audio device, be sure to turn off all system sounds
to prevent inadvertently transmitting them over the air.
to prevent inadvertently transmitting them over the air.
IMPORTANT: Be sure that your audio device is configured to sample at
48000 Hz, 16 bits.
IMPORTANT: Windows Vista and later may configure audio devices using
NOTE: Windows Vista and later may configure audio devices using
the Texas Instruments PCM2900 series CODEC for microphone input rather
line input. (This chip is used in many radios with built-in USB
CODECs, as well as various other audio interfaces.) If you are using

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@ -10,6 +10,6 @@ Meanings of remaining options on the *General* tab should be
self-explanatory after you have made some QSOs using _WSJT-X_. You
may return to set these options to your preferences later.
IMPORTANT: If you are using a callsign with an add-on prefix or
TIP: If you are using a callsign with an add-on prefix or
suffix, or wish to work a station using such a call, be sure to read
the section <<COMP-CALL,Compound Callsigns>>.

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@ -1,5 +1,3 @@
// Status=review
For this step and the next, you may want to pretend you are K1JT
by entering that callsign temporarily as *My Call* on the
*Settings | General* tab. Your results should then be identical to
@ -8,8 +6,8 @@ those shown in the screen shot below.
.Open a Wave File:
- Select *File | Open* and select the file
+...\save\samples\130418_1742.wav+. When the file opens you should see
something similar to the to the following screen shot:
+...\save\samples\JT9\130418_1742.wav+. When the file opens you should
see something similar to the to the following screen shot:
[[X12]]
image::main-ui.png[align="center",alt="Main UI and Wide Graph"]

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@ -50,7 +50,7 @@ image::decodes.png[align="center"]
earlier, in <<TUT_EX1,Example 1>>. _WSJT-X_ automatically determines
the mode of each JT9 or JT65 message.
IMPORTANT: When you double-click on a signal in the waterfall it will be
TIP: When you double-click on a signal in the waterfall it will be
properly decoded even if on the "`wrong`" side of the *JT65 nnnn JT9*
marker. The Tx mode automatically switches to that of the decoded
signal and the Rx and Tx frequency markers on the waterfall scale

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@ -6,7 +6,7 @@
- Set the audio frequencies to *Tx 1224 Hz* and *Rx 1224 Hz*.
IMPORTANT: Sliders and spinner controls respond to *Arrow* key presses
TIP: Sliders and spinner controls respond to *Arrow* key presses
and *Page Up/Down* key presses, with the *Page* keys moving the
controls in larger steps. You can also type numbers directly into
the spinner controls or use the mouse wheel.
@ -14,3 +14,12 @@ the spinner controls or use the mouse wheel.
- Select *Tab 2* (below the *Decode* button) to choose the alternative
set of controls for generating and selecting Tx messages.
=== Download Samples
- Select *Download samples...* from the *Help* menu.
- Download some or all of the available sample files using checkboxes
on the screen shown below. For this tutorial you will need at least
the JT9 and JT9+JT65 files.
image::download_samples.png[align="center",alt="Downlod Samples"]

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@ -38,12 +38,13 @@ received signals.
- If you will use automatic Doppler tracking and your radio accepts
frequency-setting commands while transmitting, check *Allow Tx
frequency changes while transmitting*. Transceivers known to permit
such changes include the IC-735, IC-756 Pro II, IC-910-H, FT-817,
FT-847, FT-857, FT-897, TS-590S, TS-590SG, TS-2000 (with Rev 9 or
later firmware upgrade), Flex 1500 and 5000, HPSDR, Anan-10, Anan-100,
and KX3.
such changes include the IC-735, IC-756 Pro II, IC-910-H, FT-847,
TS-590S, TS-590SG, TS-2000 (with Rev 9 or later firmware upgrade),
Flex 1500 and 5000, HPSDR, Anan-10, Anan-100, and KX3. To gain full
benefit of Doppler tracking your radio should allow frequency changes
under CAT control in 1 Hz steps.
IMPORTANT: If your radio does not accept commands to change frequency
NOTE: If your radio does not accept commands to change frequency
while transmitting, Doppler tracking will be approximated with a
single Tx frequency adjustment before a transmission starts, using a
value computed for the middle of the Tx period.
@ -218,10 +219,10 @@ capability being used by the MSK144 real-time decoder. If it is well
below 100% you may increase the decoding depth from *Fast* to *Normal*
or *Deep*, and increase *F Tol* from 100 to 200 Hz.
IMPORTANT: Most modern multi-core computers can easily handle the
NOTE: Most modern multi-core computers can easily handle the
optimum parameters *Deep* and *F Tol 200*. Older and slower machines
may not be able to keep up at these settings; in that case there will
be a modest loss in decoding capability for the very weakest pings.
be a modest loss in decoding capability for the weakest pings.
- T/R sequences of 15 seconds or less requires selecting your
transmitted messages very quickly. Check *Auto Seq* to have the
@ -245,7 +246,7 @@ enclosed in <> angle brackets, as in the following model QSO
<K1ABC W9XYZ> 73
IMPORTANT: There is little or no advantage to using MSK144 *Sh*
NOTE: There is little or no advantage to using MSK144 *Sh*
messages at 50 or 70 MHz. At these frequencies, most pings are long
enough to support standard messages -- which have the advantage of
being readable by anyone listening in.