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42 lines
1.6 KiB
Plaintext
42 lines
1.6 KiB
Plaintext
image::settings-advanced.png[align="center",alt="Settings Advanced"]
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_JT65 decoding parameters_
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- *Random erasure patterns* logarithmically scales the number of
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pseudo-random trials used by the Franke-Taylor JT65 decoder. Larger
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numbers give slightly better sensitivity but take longer. For most
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purposes a good setting is 6 or 7.
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- *Aggressive decoding level* sets the threshold for acceptable
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decodes using Deep Search. Higher numbers will display results
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with lower confidence levels.
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- Check *MSK144 Contest Mode* to cause generation and auto-sequencing
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of MSK144 messages with four-character grid locators in place of signal
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reports.
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- Check *Two-pass decoding* to enable a second decoding pass after
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signals producing first-pass decodes have been subtracted from the
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received data stream.
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_Miscellaneous_
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- Set a positive number in *Degrade S/N of .wav file* to add known
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amounts of pseudo-random noise to data read from a .wav file. To
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ensure that the resulting S/N degradation is close to the requested
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number of dB, set *Receiver bandwidth* to your best estimate of the
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receiver's effective noise bandwidth.
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- Set *Tx delay* to a number larger than the default 0.2 s to create
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a larger delay between execution of a command to enable PTT and onset
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of Tx audio.
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IMPORTANT: For the health of your T/R relays and external
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preamplifier, we strongly recommend using a hardware sequencer and
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testing to make sure that sequencing is correct.
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- Check *x 2 Tone spacing* to generate Tx audio with twice the normal
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tone spacing. This feature is intended for use with specialized LF/MF
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transmitters that divide the audio waveform by 2 before further
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processing.
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