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53 lines
2.1 KiB
Plaintext
53 lines
2.1 KiB
Plaintext
// Status=review
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.Main Window:
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- Select *FT4* on the *Mode* menu.
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- Double-click on *Erase* to clear both text windows.
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.Wide Graph Settings:
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- *Bins/Pixel* = 7, *Start* = 100 Hz, *N Avg* = 1
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- Adjust the width of the Wide Graph window so that the upper
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frequency limit is approximately 4000 Hz.
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.Open a Wave File:
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- Select *File | Open* and navigate to
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+...\save\samples\FT4\000000_000002.wav+. The waterfall and Band
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Activity window should look something like the following screen shots.
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This sample file was recorded during a practice contest test session, so
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most of the decoded messages use the *RTTY Roundup* message formats.
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[[X15]]
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image::ft4_waterfall.png[align="left",alt="Wide Graph Decode FT4"]
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image::ft4_decodes.png[align="left"]
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- Click with the mouse anywhere on the waterfall display. The green Rx
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frequency marker will jump to your selected frequency, and the Rx
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frequency control on the main window will be updated accordingly.
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- Do the same thing with the *Shift* key held down. Now the red Tx
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frequency marker and its associated control on the main window will
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follow your frequency selections.
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- Do the same thing with the *Ctrl* key held down. Now the both colored
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markers and both spinner controls will follow your selections.
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- Now double-click on any of the the lines of decoded text in the Band
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Activity window. Any line will show similar behavior, setting
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Rx frequency to that of the selected message and leaving Tx frequency
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unchanged. To change both Rx and Tx frequencies, hold *Ctrl* down
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when double-clicking.
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TIP: To avoid QRM from competing callers, it is frequently desirable
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to answer a CQ on a different frequency from that of the CQing
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station. The same is true when you tail-end another QSO. Choose a Tx
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frequency that appears to be not in use. You might want to check the
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box *Hold Tx Freq*.
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TIP: Keyboard shortcuts *Shift+F11* and *Shift+F12* provide an easy
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way to move your FT4 Tx frequency down or up in 90 Hz steps.
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IMPORTANT: When finished with this Tutorial, don't forget to re-enter
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your own callsign as *My Call* on the *Settings | General* tab.
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