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79 lines
3.3 KiB
Plaintext
79 lines
3.3 KiB
Plaintext
// Status=review
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.Main Window:
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- Select *FT8* 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* = 5, *Start* = 100 Hz, *N Avg* = 2
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- Adjust the width of the Wide Graph window so that the upper
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frequency limit is approximately 3300 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\FT8\181201_180245.wav+. The waterfall and Band
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Activity window should look something like the following screen shots.
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(This recording was made during the "FT8 Roundup" contest, so most
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transmissions happen to be using *RTTY Roundup* message formats.)
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[[X15]]
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image::FT8_waterfall.png[align="left",alt="Wide Graph Decode 170709_135615"]
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image::ft8_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 both colored
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markers and both spinner controls will follow your selections.
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- Double-clicking at any frequency on the waterfall does all the
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things just described and also invokes the decoder in a small range
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around the Rx frequency. To decode a particular signal, double-click
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near the left edge of its waterfall trace.
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- Now double-click on any of the lines of decoded text in the Band
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Activity window. Any line will show the same 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 usually best
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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 Tx frequency down or up in 60 Hz steps.
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TIP: An online {ft8_tips} by ZL2IFB offers many additional tips on
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operating procedures.
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.FT8 DXpedition Mode:
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This special operating mode enables DXpeditions to make FT8 QSOs at
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very high rates. Both stations must use _WSJT-X_ Version 1.9 or
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later. Detailed operating instructions for {ft8_DXped} are available
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online. Do not try to use DXpedition mode without reading these
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instructions carefully!
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IMPORTANT: FT8 DXpedition mode is intended for use by rare-entity
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DXpeditions and other unusual circumstances in which sustained QSO
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rates well above 100/hour are expected. Do not use the multi-signal
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capability unless you satisfy this requirement, and do not use
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DXpedition Mode in the conventional FT8 sub-bands. If you are
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contemplating operation as Fox using DXpedition Mode, find a suitable
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dial frequency consistent with regional band plans and publicize it
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for the operators you hope to work. Remember that on-the-air signal
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frequencies will be higher than the dial frequency by up to 4 kHz.
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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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