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synced 2024-11-22 04:11:16 -05:00
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
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@ -67,6 +67,7 @@ set (UG_IMGS
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images/config-menu.png
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images/decode-menu.png
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images/decodes.png
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images/download_samples.png
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images/file-menu.png
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images/freemsg.png
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images/help-menu.png
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@ -2,7 +2,7 @@
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The _WSJT_ project was started in 2001. Since 2005 it has been an
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Open Source project, and it now includes programs _WSJT_, _MAP65_,
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_WSPR_, _WSJT-X_, and _WSPR-X_. All all code is licensed under the
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_WSPR_, _WSJT-X_, and _WSPR-X_. All code is licensed under the
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GNU Public License (GPL). Many users of these programs, too numerous
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to mention here individually, have contributed suggestions and advice
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that have greatly aided the development of _WSJT_ and its sister
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@ -12,7 +12,7 @@ For _WSJT-X_ in particular, we acknowledge contributions from *AC6SL,
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AE4JY, DJ0OT, G3WDG, G4KLA, G4WJS, IV3NWV, IW3RAB, K3WYC, K9AN,
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KA6MAL, KA9Q, KB1ZMX, KD6EKQ, KI7MT, KK1D, ND0B, PY2SDR, VK3ACF,
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VK4BDJ, VK7MO, W4TI, W4TV, and W9MDB*. Each of these amateurs has helped to
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bring the program’s design, code, tetsting, and/or documentation to
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bring the program’s design, code, testing, and/or documentation to
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its present state.
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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
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on-the-air frequency of your lowest JT9 or JT65 tone is the sum of
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dial frequency and audio Tx frequency.
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IMPORTANT: In general we do not recommend using *Lock Tx=Rx* since it
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TIP: In general we do not recommend using *Lock Tx=Rx* since it
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encourages poor radio etiquette when running a frequency. With *Lock
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Tx=Rx* checked, your own Tx frequency will move around following your
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callers.
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@ -33,6 +33,6 @@ inserted automatically. Typical reports for the various modes fall in
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the range –30 to +20 dB. Remember that JT65 reports saturate at an
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upper limit of -1 dB.
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IMPORTANT: Consider reducing power if your QSO partner reports your
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TIP: Consider reducing power if your QSO partner reports your
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signal above -5 dB in one of the _WSJT-X_ slow modes. These are
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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
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if you have requested CAT control but communication with the radio has
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been lost.
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IMPORTANT: Many Icom rigs cannot be queried for split status, current
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VFO or split transmit frequency. Consequently you should not change
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the current VFO, split status or frequency using controls on the radio
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when using _WSJT-X_ with an Icom radio.
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TIP: Many Icom rigs cannot be queried for split status, current VFO or
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split transmit frequency. When using _WSJT-X_ with such radios you
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should not change the current VFO, split status or dial frequency
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using controls on the radio.
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* If *DX Grid* contains a valid Maidenhead locator, the corresponding
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great-circle azimuth and distance from your location are displayed.
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@ -37,4 +37,5 @@ future reference. Click *Add* to insert the present call and locator
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in the database; click *Lookup* to retrieve the locator for a
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previously stored call. This feature is mainly useful for situations
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in which the number of active stations is modest and reasonably
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stable, such as EME (Earth-Moon-Earth) communication.
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stable, such as EME (Earth-Moon-Earth) communication. The callsign
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file name is `CALL3.TXT`.
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@ -46,7 +46,8 @@ messages are used.
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- Four sliders control reference levels and scaling for waterfall
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colors and the spectrum plot. Values around midscale are usually
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about right, depending on the input signal level, the chosen palette,
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and your own preferences.
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and your own preferences. Hover the mouse over a control to display a
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tip reminding you of its function.
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- *Smoothing* is active only when *Linear Average* has been selected.
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Smoothing the displayed spectrum over more than one bin can enhance
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@ -80,7 +81,7 @@ to compress the spectral display.
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spectra.
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- *Smooth* values greater than 0 apply running averages to the plotted
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spectra, therebu smoothing the curves over multiple bins.
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spectra, thereby smoothing the curves over multiple bins.
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- Label *N* shows the number of echo pulses averaged.
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BIN
doc/user_guide/en/images/download_samples.png
Normal file
BIN
doc/user_guide/en/images/download_samples.png
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Binary file not shown.
After Width: | Height: | Size: 13 KiB |
@ -14,7 +14,7 @@ installation directory and its subdirectories.
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directory +
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`C:\Users\<username>\AppData\Local\WSJT-X`.
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IMPORTANT: Your computer may be configured so that this directory is
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TIP: Your computer may be configured so that this directory is
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"`invisible`". It's there, however, and accessible. An alternative
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(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
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above about -10 dB. JT9 supports the extended range –50 to +49 dB and
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assigns more reliable numbers to relatively strong signals.
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IMPORTANT: Signals become visible on the waterfall around S/N = –26 dB
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NOTE: Signals become visible on the waterfall around S/N = –26 dB
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and audible (to someone with very good hearing) around –15
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dB. Thresholds for decodability are around -23 dB for JT4, –24 dB for
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JT65, –26 dB for JT9.
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@ -109,11 +109,10 @@ In each case, the compound callsign is treated as *Type 2* because the
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add-on prefix or suffix is _not_ one of those in the fixed list. Note
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that a second callsign is never permissible in these messages.
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IMPORTANT: Remember that during a transmission your transmitted message is
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always displayed in the first label on the *Status Bar*, highlighted
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in yellow. It is displayed there exactly as another station will
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receive it. Be sure to check that you are actually transmitting the
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message you wish to send!
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TIP: During a transmission your outgoing message is displayed in the
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first label on the *Status Bar* and shown exactly as another station
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will receive it. You can check to see that you are actually
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transmitting the message you wish to send.
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QSOs involving *Type 2* compound callsigns might look like either
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of the following sequences
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@ -138,7 +137,7 @@ and possibly also in a 73 transmission, as may be required by
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licensing authorities. Other transmissions during a QSO may use the
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standard structured messages without callsign prefix or suffix.
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IMPORTANT: If you are using a compound callsign, you may want to
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TIP: If you are using a compound callsign, you may want to
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experiment with the option *Message generation for type 2 compound
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callsign holders* on the *Settings | General* tab, so that messages
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will be generated that best suit your needs.
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@ -159,6 +158,6 @@ as the following checklist:
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- Radio filters centered and set to widest available passband (up to 5 kHz).
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IMPORTANT: Remember that JT4, JT9, J65, and WSPR generally do not
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require high power. Under most HF propagation conditions, QRP is the
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norm.
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TIP: Remember that in many circumstances JT4, JT9, JT65, and WSPR do
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not require high power. Under most HF propagation conditions, QRP is
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the norm.
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@ -97,30 +97,32 @@ Still to come ...
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Table 1 provides a brief summary parameters for the slow modes in
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_WSJT-X_. Parameters K and r specify the constraint length and rate
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of the convolutional codes; n and k give the sizes of the (equivalent)
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block codes; Q is the alphabet size for the information-carrying
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channel symbols; Mod, Baud, and BW specify the modulation type, keying
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rate, and occupied bandwidth; fSync is the fraction of transmitted
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energy devoted to synchronizing symbols; TxT is the transmission
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duration, and S/N is the signal-to-noise ratio (in a 2500 Hz reference
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bandwidth) above which the probability of decoding is 50% or higher.
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of the convolutional codes; n and k specify the sizes of the
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(equivalent) block codes; Q is the alphabet size for the
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information-carrying channel symbols; Sync Energy is the fraction of
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transmitted energy devoted to synchronizing symbols; and S/N Threshold
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is the signal-to-noise ratio (in a 2500 Hz reference bandwidth) above
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which the probability of decoding is 50% or higher.
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[[SLOW_TAB]]
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.Parameters of Slow Modes
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[width="90%",cols="3h,^3,^2,^1,^2,^2,^2,^2,^2,^2",frame=topbot,options="header"]
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|===============================================================================
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|Mode |FEC Type |(n,k) | Q| Mod | Baud |BW (Hz)|fSync|TxT (s)|S/N (dB)
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|JT4A |K=32, r=1/2|(206,72)| 2| 4-FSK| 4.375| 17.5 | 0.50| 47.1 | -23
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|JT9A |K=32, r=1/2|(206,72)| 8| 9-FSK| 1.736| 15.6 | 0.19| 49.0 | -27
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|JT65A |Reed Solomon|(63,12) |64|65-FSK| 2.692| 177.6 | 0.50| 46.8 | -25
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|QRA64A|Q-ary Repeat Accumulate|(63,12) |64|64-FSK| 1.736| 111.1 | 0.25| 48.4 | -26
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| WSPR |K=32, r=1/2|(162,50)| 2| 4-FSK| 1.465| 5.9 | 0.50|110.6 | -29
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|Mode |FEC Type |(n,k) | Q|Modulation type|Keying rate (Baud)|Bandwidth (Hz)
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|Sync Energy|Tx Duration (s)|S/N Threshold (dB)
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|JT4A |K=32, r=1/2|(206,72)| 2| 4-FSK| 4.375| 17.5 |
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0.50| 47.1 | -23 |JT9A |K=32, r=1/2|(206,72)| 8| 9-FSK| 1.736| 15.6 |
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0.19| 49.0 | -27 |JT65A |Reed Solomon|(63,12) |64|65-FSK| 2.692| 177.6
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| 0.50| 46.8 | -25 |QRA64A|Q-ary Repeat Accumulate|(63,12) |64|64-FSK|
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1.736| 111.1 | 0.25| 48.4 | -26 | WSPR |K=32, r=1/2|(162,50)| 2|
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4-FSK| 1.465| 5.9 | 0.50|110.6 | -29
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|===============================================================================
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Submodes of the JT4, JT9, JT65, and QRA64 protocols offer wider tone
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spacings that may be desirable for channels causing significant
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Doppler spread. Table 2 summarizes the tone spacings, bandwidths, and
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threshold sensitivities of the various submodes.
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Submodes of JT4, JT9, JT65, and QRA64 offer wider tone spacings for
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circumstances that may require them, such significant Doppler spread.
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Table 2 summarizes the tone spacings, bandwidths, and approximate
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threshold sensitivities of the various submodes when spreading is
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comparable to tone spacing.
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[[SLOW_SUBMODES]]
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.Parameters of Slow Submodes
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@ -11,6 +11,10 @@ most purposes a good setting is 6 or 7.
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decodes using Deep Search. Higher numbers will display results
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with lower confidence levels.
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- Check *MSK144 Contest Mode* to cause generation and auto-sequencing
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of MSK144 messages with four-character grid locators in place of signal
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reports.
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- Check *Two-pass decoding* to enable a second decoding pass after
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signals producing first-pass decodes have been subtracted from the
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received data stream.
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@ -8,14 +8,15 @@ Select the *Audio* tab to configure your sound system.
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*Output*. Usually the *Mono* settings will suffice, but in special
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cases you can choose *Left*, *Right*, or *Both* stereo channels.
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- Be sure that your audio device is configured to sample at 48000 Hz,
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16 bits.
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IMPORTANT: If you select the audio output device that is also your
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computer's default audio device, be sure to turn off all system sounds
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to prevent inadvertently transmitting them over the air.
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IMPORTANT: Be sure that your audio device is configured to sample at
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48000 Hz, 16 bits.
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IMPORTANT: Windows Vista and later may configure audio devices using
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NOTE: Windows Vista and later may configure audio devices using
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the Texas Instruments PCM2900 series CODEC for microphone input rather
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line input. (This chip is used in many radios with built-in USB
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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
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self-explanatory after you have made some QSOs using _WSJT-X_. You
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may return to set these options to your preferences later.
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IMPORTANT: If you are using a callsign with an add-on prefix or
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TIP: If you are using a callsign with an add-on prefix or
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suffix, or wish to work a station using such a call, be sure to read
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the section <<COMP-CALL,Compound Callsigns>>.
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@ -1,5 +1,3 @@
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// Status=review
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For this step and the next, you may want to pretend you are K1JT
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by entering that callsign temporarily as *My Call* on the
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*Settings | General* tab. Your results should then be identical to
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@ -8,8 +6,8 @@ those shown in the screen shot below.
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.Open a Wave File:
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- Select *File | Open* and select the file
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+...\save\samples\130418_1742.wav+. When the file opens you should see
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something similar to the to the following screen shot:
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+...\save\samples\JT9\130418_1742.wav+. When the file opens you should
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see something similar to the to the following screen shot:
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[[X12]]
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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"]
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earlier, in <<TUT_EX1,Example 1>>. _WSJT-X_ automatically determines
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the mode of each JT9 or JT65 message.
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IMPORTANT: When you double-click on a signal in the waterfall it will be
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TIP: When you double-click on a signal in the waterfall it will be
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properly decoded even if on the "`wrong`" side of the *JT65 nnnn JT9*
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marker. The Tx mode automatically switches to that of the decoded
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signal and the Rx and Tx frequency markers on the waterfall scale
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@ -6,7 +6,7 @@
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- Set the audio frequencies to *Tx 1224 Hz* and *Rx 1224 Hz*.
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IMPORTANT: Sliders and spinner controls respond to *Arrow* key presses
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TIP: Sliders and spinner controls respond to *Arrow* key presses
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and *Page Up/Down* key presses, with the *Page* keys moving the
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controls in larger steps. You can also type numbers directly into
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the spinner controls or use the mouse wheel.
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@ -14,3 +14,12 @@ the spinner controls or use the mouse wheel.
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- Select *Tab 2* (below the *Decode* button) to choose the alternative
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set of controls for generating and selecting Tx messages.
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=== Download Samples
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- Select *Download samples...* from the *Help* menu.
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- Download some or all of the available sample files using checkboxes
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on the screen shown below. For this tutorial you will need at least
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the JT9 and JT9+JT65 files.
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image::download_samples.png[align="center",alt="Downlod Samples"]
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@ -38,12 +38,13 @@ received signals.
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- If you will use automatic Doppler tracking and your radio accepts
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frequency-setting commands while transmitting, check *Allow Tx
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frequency changes while transmitting*. Transceivers known to permit
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such changes include the IC-735, IC-756 Pro II, IC-910-H, FT-817,
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FT-847, FT-857, FT-897, TS-590S, TS-590SG, TS-2000 (with Rev 9 or
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later firmware upgrade), Flex 1500 and 5000, HPSDR, Anan-10, Anan-100,
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and KX3.
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such changes include the IC-735, IC-756 Pro II, IC-910-H, FT-847,
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TS-590S, TS-590SG, TS-2000 (with Rev 9 or later firmware upgrade),
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Flex 1500 and 5000, HPSDR, Anan-10, Anan-100, and KX3. To gain full
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benefit of Doppler tracking your radio should allow frequency changes
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under CAT control in 1 Hz steps.
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IMPORTANT: If your radio does not accept commands to change frequency
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NOTE: If your radio does not accept commands to change frequency
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while transmitting, Doppler tracking will be approximated with a
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single Tx frequency adjustment before a transmission starts, using a
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value computed for the middle of the Tx period.
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@ -218,10 +219,10 @@ capability being used by the MSK144 real-time decoder. If it is well
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below 100% you may increase the decoding depth from *Fast* to *Normal*
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or *Deep*, and increase *F Tol* from 100 to 200 Hz.
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IMPORTANT: Most modern multi-core computers can easily handle the
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NOTE: Most modern multi-core computers can easily handle the
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optimum parameters *Deep* and *F Tol 200*. Older and slower machines
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may not be able to keep up at these settings; in that case there will
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be a modest loss in decoding capability for the very weakest pings.
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be a modest loss in decoding capability for the weakest pings.
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- T/R sequences of 15 seconds or less requires selecting your
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transmitted messages very quickly. Check *Auto Seq* to have the
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@ -245,7 +246,7 @@ enclosed in <> angle brackets, as in the following model QSO
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<K1ABC W9XYZ> 73
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IMPORTANT: There is little or no advantage to using MSK144 *Sh*
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NOTE: There is little or no advantage to using MSK144 *Sh*
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messages at 50 or 70 MHz. At these frequencies, most pings are long
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enough to support standard messages -- which have the advantage of
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being readable by anyone listening in.
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