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These documentation source files are not the one true version, just a copy for testing purposes. DO NOT EDIT THESE FILES. To use this on Windows you will need a working asciidoc installation and the path to it must be included in your CMAKE_PREFIX_PATH (probably via a local CMake tool chain file). At the time of writing the official asciidoc package does not work on Windows. The latest development master does however work, it can be downloaded as a snapshot ZIP archive from here: https://github.com/asciidoc/asciidoc/archive/master.zip git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5316 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
56 lines
2.3 KiB
Plaintext
56 lines
2.3 KiB
Plaintext
// Status=review
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.Receiver Noise Level
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- Click the *Monitor* button to return to normal receive operation.
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The button will be highlighted in green.
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- Be sure your transceiver is set to *USB* (or *USB Data*) mode.
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- Use the receiver gain controls and/or the computer's audio mixer
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controls to set the background noise level (scale at lower left of
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main window) to around 30 dB when no signals are present. If
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necessary you can also use the slider next to the scale, but note that
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the overall dynamic range will be best with this slider not too far
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from its mid-point.
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.Bandwidth and Frequency Setting
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- If your transceiver offers more than one bandwidth setting in USB
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mode, you should normally choose the widest one possible, up to about
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5 kHz. This choice has the desirable effect of allowing the *Wide
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Graph* to display the JT65 and JT9 sub-bands simultaneously on most HF
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bands. Further details are provided in the <<TUTORIAL,Tutorial>>
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section.
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- If you have only a standard SSB filter you won’t be able to display
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more than about 2.7 kHz bandwidth. Depending on the exact dial
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frequency setting, you can display the full sub-band generally used
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for one mode (JT65 or JT9) and part of the sub-band for the other
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mode.
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- Of course, you might prefer to concentrate on one mode at a time,
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setting your dial frequency to (say) 14.076 for JT65 or 14.078 for
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JT9. Present conventions have the nominal JT9 dial frequency 2 kHz
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higher than the JT65 dial frequency. A checkbox labeled *+2 kHz*,
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just below the *Band* selector, makes the appropriate frequency
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settings easy.
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.Transmitter Audio Level
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* Click the *Tune* button on the main screen to switch the
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radio into transmit mode and generate a steady audio tone.
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* Listen to the generated audio tone using your radio’s *Monitor*
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facility. The transmitted tone should be perfectly smooth, with no
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clicks or glitches.
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* Open the computer’s audio mixer controls for output (``Playback'')
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devices and adjust the volume slider downward from its maximum until
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the RF output from your transmitter falls by around ten percent. This
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will be a good level for audio drive.
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* Alternatively, you can make the Tx audio level adjustment using the
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digital slider labeled *Pwr* at the right edge of the main window.
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* Toggle the *Tune* button once more to stop your test transmission.
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