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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7235 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
99 lines
3.8 KiB
Plaintext
99 lines
3.8 KiB
Plaintext
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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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\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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.Decoding Overview
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Decoding takes place at the end of a receive sequence and proceeds in
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two steps. The first decode is done at the selected Rx frequency,
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indicated by the U-shaped green marker on the waterfall scale.
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Results appear in both the left (*Band Activity*) and right (*Rx
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Frequency*) text windows on the main screen. The program then finds
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and decodes all signals in the selected mode over the displayed
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frequency range. The red marker on the waterfall scale indicates your
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Tx frequency.
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Seven JT9 signals are present in the example file, all decodable.
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When this file was recorded KF4RWA was finishing a QSO with K1JT.
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Since the green marker was placed at his audio frequency, 1224 Hz, his
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message "`K1JT KF4RWA 73`" is decoded first and appears in the *Rx
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Frequency* window. The *Band Activity* window shows this message plus
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all decodes at other frequencies. By default lines containing CQ are
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highlighted in green, and lines with *My Call* (in this case K1JT) in
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red.
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[[X13]]
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.Decoding Controls
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To gain some feeling for controls frequently used when making QSOs,
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try clicking with the mouse on the decoded text lines and on the
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waterfall spectral display. You should be able to confirm the
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following behavior:
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- Double-click on either of the decoded lines highlighted in
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green. This action produces the following results:
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** Callsign and locator of a station calling CQ are copied to the *DX
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Call* and *DX Grid* entry fields.
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** Messages are generated for a standard minimal QSO.
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** The *Tx even* box is checked or cleared appropriately, so that you
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will transmit in the proper (odd or even) minutes.
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** The Rx and Tx frequency markers are moved to the frequency of the
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CQing station.
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** The *Gen Msg* ("`generated message`") radio button at bottom right
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of the main window is selected.
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** If you had checked *Double-click on call sets Tx Enable* on the
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*Setup* menu, *Enable Tx* would be activated and a transmission would
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start automatically at the proper time.
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- Double-click on the decoded message "`K1JT N5KDV EM41`",
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highlighted in red. Results will be similar to those in the
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previous step, except the Tx frequency (red marker) is not
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moved. Such messages are usually in response to your own CQ, or from
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a tail-ender, and you probably want your Tx frequency to stay where it
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was.
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- By holding down the *Ctrl* key when double-clicking on a decoded
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line you can cause both Tx and Rx frequencies to be moved. This
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behavior can also be forced by checking *Lock Tx=Rx*.
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- Double-click on the message from KF4RWA in either window. He is
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sending "`73`" to K1JT, signifying that the QSO is over. Most likely
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you want to send 73 to him, so the message "`KF4RWA K1JT 73`" is
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automatically generated and selected for your next transmission.
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(Alternatively, you might choose to send a free text message or to
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call CQ again.)
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- Click somewhere on the waterfall to set Rx frequency (green marker
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on waterfall scale).
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- Shift-click on the waterfall to set Tx frequency (red marker).
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- Ctrl-click on the waterfall to set both Rx and Tx frequencies.
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- Double-click on a signal in the waterfall to set Rx frequency and
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start a narrow-band decode there. Decoded text will appear in the
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right window only.
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- Ctrl-double-click on a signal to set both Rx and Tx frequencies and
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decode at the new frequency.
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- Click *Erase* to clear the right window.
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- Double-click *Erase* to clear both text windows.
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