[GreenKeys] strange behavior FLDIGI

Fri Feb 7 13:54:04 EST 2025

If you mean FLDIGI prints junk where it has no tones to demodulate, then
you need to set the squelch level in FLDIGI to some higher value.  Look in
the lower right area of the FLDIGI window for SQL.  That's the squelch
control.  Since you are essentially "wireline", set SQL to ON (yellow light
on my Raspberry Pi) and the vertical slider to the right of the SQL button
to mid scale and see if that helps.

Paul, ad7i

On Fri, Feb 7, 2025 at 1:20 PM steve bennett via GreenKeys <
greenkeys at mailman.qth.net> wrote:

> GKs,
>
>    I added some mark signal to the start of my characters and that helps
> but FLDIGI/MMTTY
> still want to print garbage during the silence.
> Only way to make them happy is send a continuous mark frequency.
>
> Well OK I guess that is the answer then.
>
> In case anyone is wondering. I'm doing this to test the virtual AFSK
> keyboard I talked about implementing
> in HTML, CSS, Javascript.
> I'm not a web developer by any stretch of the imagination just tinkering
> for fun.
>
> Thanks,
> -Steve
>
> On Friday, February 7, 2025 at 12:50:14 PM EST, John Lawson <
> john at tubetestingpros.com> wrote:
>
>
> In practice, is not the ‘mark’ tone continuous?
>
> Silent intervals in between characters might confuse FLDIGI and MTTY – I
> haven’t used a Flesher in decades, but it might ‘flywheel’ over
> interruptions like that.  (The Dovetrons do this…)  A lot of “physical” TUs
> use an absense of the Mark tone to turn the motor off after a timed delay –
> and subsequently turn it back on when the tone re-appears…
>
>
>
> Cheers
>
> John KB6SCO
>
> Carson City
>
>
>
>
>
> *From:* greenkeys-bounces at mailman.qth.net <
> greenkeys-bounces at mailman.qth.net> *On Behalf Of *steve bennett via
> GreenKeys
> *Sent:* Friday, February 7, 2025 9:24 AM
> *To:* greenkeys <greenkeys at mailman.qth.net>; ad7i <ad7i at ad7i.net>
> *Subject:* Re: [GreenKeys] strange behavior FLDIGI
>
>
>
> The individual bits were all created with sin(2 * P * f * t) with t
> starting at zero.
>
> The characters were created by concatenating these mark and space tones.
> No regard given to joining tones at zero crossings.
>
> In a music application you would want to join at zero crossings to avoid
> getting a pop sound.
>
> So all bit tones start at zero phase and end when their time slot is up.
>
> No tone between letters. Just silence, start bit, 5 data bits and a stop
> bit then silence.
>
>
>
> As I said the Flesher TU170 has no problem with it.
>
> FLDIGI and MMTTY don't like it.
>
>
>
> -Steve AD8CI
>
>
>
>
>
> On Friday, February 7, 2025 at 11:30:06 AM EST, ad7i <ad7i at ad7i.net>
> wrote:
>
>
>
>
>
> When your individual files are concatenated, is the composite signal
> phase-continuous?
>
>
>
> Paul, ad7i
>
>
>
>
>
> On Fri, Feb 7, 2025 at 11:26 AM John, W9DDD <w9ddd at tapr.org> wrote:
>
> Are these individual files inserted within a stream of mark frequency?
> Perhaps FLDIGI needs slight wake up time?  Query from someone who knows
> nothing about FLDIGI. (but should learn)
>
>
> On 2/7/2025 10:18 AM, steve bennett via GreenKeys wrote:
> > GKs,
> >
> >   Can anyone explain this?
> > I have single character 50 baud wav files I generated for testing
> > purposes.
> > A.WAV B.WAV C.WAV......etc
> > I created the entire 5 bit character set as individual WAV files.
> >
> > My model 15 using a Flesher TU170 will print these characters just fine.
> > However for some strange reason FLDIGI does not like single characters.
> >
> > If I concatenate a string of these characters into a single audio file
> > FLDIGI will print them.
> > sox ?.wav all_char.wav
> >
> > FLDIGI will print all_chars.wav but will not print the same AFSK if
> > sent one character at a time.
> >
> > -Steve AD8CI
> >
> >
> > ______________________________________________________________
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> > Post: mailto:GreenKeys at mailman.qth.net
> >
> >>>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__teletype.net_gksearch&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=2tgnmTIAg-d9Y8aT82cnz0nHYqw96JwVBFETFTKC2tc&e=>
> >>>> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_pipermail_greenkeys_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=bxPkmLIpU1-5-X5nmAdLf3ebR2YBrfnDgyt7YQOaBuE&e=>
> >>>> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_archive_greenkeys_greenkeys.html&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=gj_Kql717Ii3KdwuiAhrzkKWKQcK6u15SYQ0CdMO_WA&e=>
> >>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__comcents.com_tty_greenkeyssearch.html&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=kTHBVkUOVZYSlD5geblnlP68rbAxXlsbDNOnl1pZsBg&e=>
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> --
> ---
> ----
> The above comments or recommendations are SWAG. Use at your own risk.
>
> John, W9DDD
>
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> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__teletype.net_gksearch&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=2tgnmTIAg-d9Y8aT82cnz0nHYqw96JwVBFETFTKC2tc&e=>
> >>> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_pipermail_greenkeys_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=bxPkmLIpU1-5-X5nmAdLf3ebR2YBrfnDgyt7YQOaBuE&e=>
> >>> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_archive_greenkeys_greenkeys.html&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=gj_Kql717Ii3KdwuiAhrzkKWKQcK6u15SYQ0CdMO_WA&e=>
> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__comcents.com_tty_greenkeyssearch.html&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=kTHBVkUOVZYSlD5geblnlP68rbAxXlsbDNOnl1pZsBg&e=>
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> Post: mailto:GreenKeys at mailman.qth.net <GreenKeys at mailman.qth.net>
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> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__teletype.net_gksearch&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=2tgnmTIAg-d9Y8aT82cnz0nHYqw96JwVBFETFTKC2tc&e=>
> >>> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_pipermail_greenkeys_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=bxPkmLIpU1-5-X5nmAdLf3ebR2YBrfnDgyt7YQOaBuE&e=>
> >>> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_archive_greenkeys_greenkeys.html&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=gj_Kql717Ii3KdwuiAhrzkKWKQcK6u15SYQ0CdMO_WA&e=>
> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__comcents.com_tty_greenkeyssearch.html&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p4uj4qZVe0q2KIXBEwvZA3BicRkyIOf6Xcp1t9RPVQ0&m=4r2Cg0oilZLzOtc2QTJdmOQ0L5gOIoJjN7zYz_VEGQDhojN7y0CR8tykZ28C-IlC&s=kTHBVkUOVZYSlD5geblnlP68rbAxXlsbDNOnl1pZsBg&e=>
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> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch
> >>> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> >>> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted by: http://www.qsl.net
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> ______________________________________________________________
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> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch
> >>> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> >>> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted by: http://www.qsl.net
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