kopia lustrzana https://github.com/jamescoxon/dl-fldigi
64 wiersze
1.6 KiB
Plaintext
64 wiersze
1.6 KiB
Plaintext
/**
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\page pseudo_fsk_page Pseudo FSK
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\tableofcontents
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<br>
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Using the FLdigi Pseudo FSK (Rt. Channel) function to key a transmitter
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<br>
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\image html config-rtty-tx.png "RTTY TX Configure"
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\image latex config-rtty-tx.png "RTTY TX Configure" width=5.0in
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<br>
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Select the PseudoFSK check boxes.
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<br>
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FLdigi is now ready to generate a 1000 hertz tone burst signal on the
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right channel of the stereo audio out of your sound card.
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<br>
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This tone burst is on when the RTTY bit is on and off when the RTTY bit is
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off. The left channel will be the normal AFSK signal.
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<br>
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The following circuit may be used to take the FLdigi PSEUDO-FSK signal from
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the right channel of your SOUND CARD to key your transmitter's FSK
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input line. You may find it necessary to invert the sense of the keying
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signal.
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<br>
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\image html CWkeyingCircuit.png "CW Keying Circuit"
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\image latex CWkeyingCircuit.png "CW Keying Circuit" width=6.0in
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<br>
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<b>NOTE:</b>
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L1 - Radio Shack has two items that may be used for this isolation
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transformer.
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<code>Catalog # 270-054, and Catalog # 273-1374</code>
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Attach an audio cable from the Rt. Channel out of the your computer's
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SOUND CARD to the input of this FSK INTERFACE CIRCUIT (input of L1).
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<br>
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Attach another cable from the output of this circuit to your
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Rig's Keying FSK Jack.
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<br>
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Every PSEUDO-FSK tone that is generated by FLdigi is rectified by this FULL
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WAVE VOLTAGE DOUBLER circuit. The resultant voltage turns the Q1 transistor
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on and "grounds" the collector.
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<br>
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\ref pseudo_fsk_page "Return to Top of Page"
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<br>
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\ref main_page "Return to Main Page"
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*/
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