[GreenKeys] GreenKeys Digest, Vol 180, Issue 3
Harold Moore
harold541 at gmail.com
Thu Jan 17 12:02:49 EST 2019
Thankyou!
73
KE6JMG
Harold
On Wed, Jan 16, 2019 at 6:20 PM <greenkeys-request at mailman.qth.net> wrote:
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> Today's Topics:
>
> 1. Re: M28 Braille page printer - Ray Morrison (Nick)
> 2. Re: M28 Braille page printer - Ray Morrison (Nick England)
> 3. Re: M28 Braille page printer - Ray Morrison (Roy Morgan)
> 4. Re: M28 Braille page printer - Ray Morrison (Jeffrey Angus)
> 5. Re: M28 Braille page printer - Ray Morrison (Sam Hallas)
> 6. Re: M28 Braille page printer - Ray Morrison (Jim Haynes)
> 7. 2019 ARRL RTTY Roundup (Russ Miller)
> 8. Re: 2019 ARRL RTTY Roundup (Gary Lynch)
> 9. Re: 2019 ARRL RTTY Roundup (Steve Garrison)
> 10. Your RTTY Roundup stories and pictures requested! (Jeff Stai)
> 11. Phone disconnect (WAYNE)
> 12. Re: TU for Computer (W7HPW Radio)
> 13. Re: TU for Computer (Ralph Mowery)
> 14. Re: TU for Computer (Jim Haynes)
> 15. Re: TU for Computer (Jim Haynes)
> 16. Re: TU for Computer (W7HPW Radio)
> 17. Re: TU for Computer (W7HPW Radio)
> 18. Re: TU for Computer (Jeffrey Angus)
> 19. Re: TU for Computer (Jeffrey Angus)
> 20. Re: TU for Computer (Jeffrey Angus)
> 21. Re: TU for Computer (Jordan Spencer Cunningham)
> 22. Re: Greenkeys Search Engine: The Debut of Teletype.net
> (Dave Horsfall)
> 23. Re: TU for Computer (Paul Heller)
> 24. Re: TU for Computer (Curt Nixon)
> 25. Re: TU for Computer (Duncan Brown)
> 26. Re: TU for Computer (Duncan Brown)
> 27. Kleinschmidt TT-483/UGC AN/UGC-29X (Kevin)
> 28. Re: Kleinschmidt TT-483/UGC AN/UGC-29X (Duncan Brown)
> 29. Re: Greenkeys Search Engine: The Debut of Teletype.net
> (Jordan Spencer Cunningham)
> 30. Re: TU for Computer (Jordan Spencer Cunningham)
> 31. Re: Kleinschmidt TT-483/UGC AN/UGC-29X (Kevin H. Phillips)
> 32. Re: TU for Computer (Jim Haynes)
> 33. Re: TU for Computer (Craig Southeren)
> 34. Re: TU for Computer (craig at postincrement.com)
> 35. Re: Kleinschmidt TT-483/UGC AN/UGC-29X (Duncan Brown)
> 36. Post Office Telegraphs at the races (Sam Hallas)
> 37. 28KSR skintight - Jacksonville FL (Nick England)
> 38. OT - Amateur Radio History - AWA video (Duncan Brown)
> 39. Re: OT - Amateur Radio History - AWA video (Steve Garrison)
> 40. tt7 part (yoeri He)
> 41. 33 document holder (Hugh Pyle)
> 42. Re: 33 document holder (tony.podrasky)
> 43. Unauthorized 14 TD MOD kit (Thomas Tillson)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 8 Jan 2019 22:00:05 +0000
> From: Nick <creativegardening at hotmail.com>
> To: "GreenKeys at mailman.qth.net" <GreenKeys at mailman.qth.net>
> Subject: Re: [GreenKeys] M28 Braille page printer - Ray Morrison
> Message-ID:
> <
> BN6PR22MB0274FCC73CC1EB7F6F48BAF0AF8A0 at BN6PR22MB0274.namprd22.prod.outlook.com
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Cool !!!
>
> Can you post a few pics ?
>
> The other Nick - N0NCQ
>
>
>
> Sent from my T-Mobile 4G LTE Device
>
>
> -------- Original message --------
> From: Nick England <navy.radio at gmail.com>
> Date: 1/8/19 3:47 PM (GMT-05:00)
> To: Greenkeys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] M28 Braille page printer - Ray Morrison
>
> I have a five-level Model 28 typing unit (LP serial 0013) that came with a
> short note on its background. I got it from the estate of Bill Bauer in
> Louisville who typed the note -
> "This LP is the one Ray Morrison, W9GRW set up for the braille machine for
> Thomas Leland Lutes K4ZBC"
> The rest of the note is about it being returned in 1981 to Bill and
> further travel/modifications from there.
>
> I found some info on line about Morrison developing a braille tape
> printer, but nothing about a page printer. I don't understand how such a
> thing would work. I haven't tried out the typing unit yet, but at a glance
> it doesn't *look* any different. One thing is that the type box has the
> pallets arranged in numerical order rather than Baudot order. Would this
> mean that the machine could handle part of the Braille character set
> somehow?
>
> I found an article by Ray Morrison in RTTY Journal about Braille TTY but
> it says the "monitor" typing unit is an eight-level printer.
>
> (p.s. Jim Haynes' memoirs include visits to Ray Morrison's QTH)
>
> https://ethw.org/First-Hand:Chad_is_Our_Most_Important_Product:_An_Engineer%27s_Memory_of_Teletype_Corporation
>
> best regards,
> Nick England K4NYW
> www.navy-radio.com<http://www.navy-radio.com>
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> ------------------------------
>
> Message: 2
> Date: Tue, 8 Jan 2019 18:03:12 -0500
> From: Nick England <navy.radio at gmail.com>
> To: Jim Haynes <jhhaynes at earthlink.net>, Greenkeys
> <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] M28 Braille page printer - Ray Morrison
> Message-ID:
> <CAB55hNc7NEOCuLW5DFGLqFg+C8+noUjBekVP=
> OqTn0t4AkouVg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Thanks, Jim. So what do you think I have with this typing unit? - was it
> just a printing monitor (not a page brailler) so that the change to the
> pallet placement in the typebox was the major thing? The note also says
> that the stunt box was swapped out by Bill before the LP was traded to
> someone else. So for Braille use, I guess the stunt box would have been
> modified because what were usually Baudot non-printing characters became
> printing characters in the Braille code, etc..
>
> The note says that the original LK was sold or traded through someone else.
>
> Nick England K4NYW
> www.navy-radio.com
>
>
> On Tue, Jan 8, 2019 at 4:54 PM Jim Haynes <jhhaynes at earthlink.net> wrote:
>
> >
> > attached two images from the Teletype Scrapbook.
> >
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> ------------------------------
>
> Message: 3
> Date: Tue, 8 Jan 2019 18:54:30 -0500
> From: Roy Morgan <k1lky68 at gmail.com>
> To: Nick England <navy.radio at gmail.com>
> Cc: Greenkeys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] M28 Braille page printer - Ray Morrison
> Message-ID: <89E222C3-4BE7-47FA-93E7-F37FB988A134 at gmail.com>
> Content-Type: text/plain; charset=utf-8
>
>
> > On Jan 8, 2019, at 3:46 PM, Nick England <navy.radio at gmail.com> wrote:
> >
> > I have a five-level Model 28 typing unit (LP serial 0013) that came with
> a short note on its background.
>
> Are there any of us who include notes IN THE MACHINE or radio about it?s
> provenance, history, or other interesting tale?
>
> It appears that with teletype machines, it was common to put diagrams or
> the like under the machine, so someone coming along later to work on the
> thing would have the information needed to keep the thing running.
>
> Maybe this thread will give some of us impetus to add some notes, ,
> schematics or whatever IN our machines or radios to help later owners.
>
> Roy
>
> Roy Morgan
> K1LKY since 1958
> k1lky68 at gmail.com
>
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 8 Jan 2019 18:47:07 -0600
> From: Jeffrey Angus <jdangus at att.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] M28 Braille page printer - Ray Morrison
> Message-ID: <846a67ba-7e7d-8abd-f271-f0762282e2c0 at att.net>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> On 1/8/19 3:54 PM, Jim Haynes wrote:
> > attached two images from the Teletype Scrapbook.
> Way frigging cool there Jim.
> Thankies
>
>
>
>
> --
> "I am a river to my people."
> Jeff-1.0
> WA6FWI
> www.foxsmercantile.com
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 9 Jan 2019 10:37:34 +0000
> From: Sam Hallas <s.hallas at ntlworld.com>
> To: Jim Haynes <jhhaynes at earthlink.net>
> Cc: Greenkeys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] M28 Braille page printer - Ray Morrison
> Message-ID: <b4fe0028-d3a2-188f-b55b-fdb8c841aa56 at ntlworld.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Jim Haynes wrote:
> >
> > attached two images from the Teletype Scrapbook.
>
> Are there any dates with those clip, Jim?
>
> Sam
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 9 Jan 2019 06:49:48 -0600 (CST)
> From: Jim Haynes <jhhaynes at earthlink.net>
> To: Sam Hallas <s.hallas at ntlworld.com>
> Cc: Greenkeys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] M28 Braille page printer - Ray Morrison
> Message-ID: <alpine.DEB.2.20.1901090649020.3064 at Frances>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> On Wed, 9 Jan 2019, Sam Hallas wrote
> > Jim Haynes wrote:
> >> attached two images from the Teletype Scrapbook.
> >
> > Are there any dates with those clip, Jim?
> Sadly, no, but as I recall the work was goin on in the mid 1960s. It
> was a Telephone Pioneers project.
>
>
>
> ------------------------------
>
> Message: 7
> Date: Wed, 9 Jan 2019 19:39:37 -0500
> From: Russ Miller <wa3frp at gmail.com>
> To: Greenkeys <GreenKeys at mailman.qth.net>
> Subject: [GreenKeys] 2019 ARRL RTTY Roundup
> Message-ID:
> <CAMVk04BT5MM+xXKkaLZ1nrWjZA0+-9=
> E0qFKw4h0bTjgduNZ3A at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> How many Greenkeyers made contacts with their Heavy Metal in this past
> weekend's RTTY contest?
>
> Here are my results:
>
> Contacts: 242
>
> Sections: 46
>
> DX: 12
>
> Points Claimed: 14,036
>
> Last year, I was mostly calling CQ on a fixed frequency on 40M and
> 80M. This year, I tried finding stations that were calling CQ on 20M,
> 40M and 80M. Pluses and minuses to either approach. I was just happy
> to get my M28ASR on-the-air again.
>
> Thanks 73
>
> Russ - WA3FRP
> wa3frp at aol.com
> i-Telex 834328 WUTMPAM CHIL
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> ------------------------------
>
> Message: 8
> Date: Wed, 9 Jan 2019 17:17:03 -0800
> From: "Gary Lynch" <lynchgj at linkline.com>
> To: "'Russ Miller'" <wa3frp at gmail.com>, "'Greenkeys'"
> <GreenKeys at mailman.qth.net>
> Subject: Re: [GreenKeys] 2019 ARRL RTTY Roundup
> Message-ID: <008101d4a882$31e0add0$95a20970$@com>
> Content-Type: text/plain; charset="utf-8"
>
> Unfortunately I had already packed away my toys for an upcoming move to a
> new home and couldn?t participate. I do hope to be able to next time.
>
>
>
> Gary - KJ6EFH
>
>
>
> A gun is like a parachute, if you ever need one and don't have one, you'll
> never need one again.....
>
> From: greenkeys-bounces at mailman.qth.net [mailto:
> greenkeys-bounces at mailman.qth.net] On Behalf Of Russ Miller
> Sent: Wednesday, January 09, 2019 4:40 PM
> To: Greenkeys
> Subject: [GreenKeys] 2019 ARRL RTTY Roundup
>
>
>
> How many Greenkeyers made contacts with their Heavy Metal in this past
> weekend's RTTY contest?
> Here are my results:
>
>
> Contacts: 242
> Sections: 46
> DX: 12
> Points Claimed: 14,036
> Last year, I was mostly calling CQ on a fixed frequency on 40M and 80M.
> This year, I tried finding stations that were calling CQ on 20M, 40M and
> 80M. Pluses and minuses to either approach. I was just happy to get my
> M28ASR on-the-air again.
> Thanks 73
>
> Russ - WA3FRP
> wa3frp at aol.com
>
> i-Telex 834328 WUTMPAM CHIL
>
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> ------------------------------
>
> Message: 9
> Date: Wed, 9 Jan 2019 20:42:59 -0500
> From: Steve Garrison <steve.n4tty at gmail.com>
> To: Russ Miller <wa3frp at gmail.com>
> Cc: Greenkeys <GreenKeys at mailman.qth.net>
> Subject: Re: [GreenKeys] 2019 ARRL RTTY Roundup
> Message-ID: <A5FA55DA-436A-4C73-9C9D-93133848CD18 at gmail.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I'm sorry to say I made zilch!
>
> But I did make two contacts during GKN. Russ and Nick, K4NYW!
>
> Steve G./N4TTY
> Sent from my iPhone
>
> > On Jan 9, 2019, at 7:39 PM, Russ Miller <wa3frp at gmail.com> wrote:
> >
> > How many Greenkeyers made contacts with their Heavy Metal in this past
> weekend's RTTY contest?
> > Here are my results:
> >
> > Contacts: 242
> > Sections: 46
> > DX: 12
> > Points Claimed: 14,036
> > Last year, I was mostly calling CQ on a fixed frequency on 40M and 80M.
> This year, I tried finding stations that were calling CQ on 20M, 40M and
> 80M. Pluses and minuses to either approach. I was just happy to get my
> M28ASR on-the-air again.
> > Thanks 73
> > Russ - WA3FRP
> > wa3frp at aol.com
> > i-Telex 834328 WUTMPAM CHIL
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
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> ------------------------------
>
> Message: 10
> Date: Thu, 10 Jan 2019 10:04:12 -0800
> From: Jeff Stai <wk6i.jeff at gmail.com>
> To: "RTTY at groups.io Group Moderators" <rtty at groups.io>,
> rttydigital at groups.io, WSJT-Group <wsjtgroup at yahoogroups.com>,
> WSJT
> <wsjt-devel at lists.sourceforge.net>, greenkeys
> <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] Your RTTY Roundup stories and pictures requested!
> Message-ID:
> <
> CAH0gZcY6uZso3uRHb8bvt9ajhKb0Zx6rBjC5q5UUo-XYDbbqVQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Now that the contest has passed....
>
> Again, I write the QST results article for the RTTY Roundup.
>
> The article is only as good as the input I receive from all of you, the
> operators that participated.
>
> So I am looking for stories of your trials, tribulations, and your
> successes and milestones. People really do want to read about this!
>
> Since it is such a hot topic, I'd also like to hear about your experiences
> with FT8. But even if you didn't use FT8, regular old RTTY stories are
> equally welcome! (I do "mine" stories from 3830 and the soapbox, so if you
> posted there, I'll get it.)
>
> Also, please send clear, in focus, high resolution photos of your operation
> in the contest. Photos with young people and/or people operating for the
> first time usually have a fast track to publication. In general, photos
> with people in them - like yourself! - are chosen for publication.
>
> I will acknowledge everything and everyone but it might take a few days -
> I'm in a work crunch. Thanks to all who have already submitted - including
> the Greenkeys people! - I will get to you!
>
> You can reply to this email or (better) send stuff in a separate email.
>
> Please forward this as appropriate.
>
> Thanks and 73! jeff wk6i
>
> --
> Jeff Stai ~ WK6I ~ wk6i.jeff at gmail.com
> Ask me about Green Keys Night - Jan 1, 2019 0000-2359 UTC!
> RTTY op at W7RN
> Twisted Oak Winery ~ http://www.twistedoak.com/
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> ------------------------------
>
> Message: 11
> Date: Thu, 10 Jan 2019 17:45:00 -0500 (EST)
> From: WAYNE <teletypeparts at comcast.net>
> To: GREENKEYS BULLETIN BOARD <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] Phone disconnect
> Message-ID: <1532503182.968663.1547160300249 at connect.xfinity.com>
> Content-Type: text/plain; charset="us-ascii"
>
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> ------------------------------
>
> Message: 12
> Date: Thu, 10 Jan 2019 23:46:08 +0000
> From: W7HPW Radio <W7HPW at outlook.com>
> To: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID:
> <
> BYAPR14MB237463960CF55E8A669358CAF3840 at BYAPR14MB2374.namprd14.prod.outlook.com
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Question; Is there software to replace a TU like a Hal ST6?
>
> Mark
> W7HPW
>
>
>
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> ------------------------------
>
> Message: 13
> Date: Thu, 10 Jan 2019 19:10:01 -0500
> From: "Ralph Mowery" <rmowery28146 at earthlink.net>
> To: "'W7HPW Radio'" <W7HPW at outlook.com>, <greenkeys at mailman.qth.net
> >
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <002501d4a941$fee89210$fcb9b630$@net>
> Content-Type: text/plain; charset="us-ascii"
>
> Go here and take your pick. You use the audio input and output of the
> computer sound system for many modes.
>
>
>
> Check out MMTTY for a good free rtty program.
>
>
>
> http://www.muenster.de/~welp/sb.htm
>
>
>
>
>
>
>
> From: greenkeys-bounces at mailman.qth.net
> [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of W7HPW Radio
> Sent: Thursday, January 10, 2019 6:46 PM
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
>
>
>
> Question; Is there software to replace a TU like a Hal ST6?
>
>
>
> Mark
>
> W7HPW
>
>
>
>
>
>
>
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> ------------------------------
>
> Message: 14
> Date: Thu, 10 Jan 2019 20:35:39 -0600 (CST)
> From: Jim Haynes <jhhaynes at earthlink.net>
> To: W7HPW Radio <W7HPW at outlook.com>
> Cc: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <alpine.DEB.2.20.1901102022320.10960 at Frances>
> Content-Type: text/plain; format=flowed; charset=US-ASCII
>
> Yes and no. Of course you are aware of all the computer software that
> turns the computer into a complete RTTY terminal, but I think what you
> are asking is for software that replaces the demodulator with digital
> signal processing so you can drive a TTY machine with the Baudot output.
>
> The earliest DSP software was K6STI's RITTY program. I talked him into
> providing a cleaned-up Baudot output when it was receiving, but didn't
> ask him to provide for a TTY keyboard input. The story of that software
> is that it ran under DOS, required a certain kind of SoundBlaster
> sound card, and was rather expensive. He pulled it off the market
> because it was being pirated, and also never ported it to anything beyond
> DOS and a more generic sound system. I think he said it was not possible
> to do that and maintain the performance it gave.
>
> I shouldn't say that was the earliest - there was probably some using a
> dedicated DSP engine, but K6STIs was the first to use a PC that I know
> of. And you didn't find many Pentium computers running DOS even back
> then.
>
> I think I was told that MMTTY has a Baudot output, but that may not be
> true and I haven't looked.
>
> I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> that is either not possible or is not a high priority. Maybe if more of
> us begged for it he would do it. It is open source, so maybe somebody
> else could do it.
>
> You don't want just an ST-6 equivalent in software; you really want
> regenerated Baudot to go to the printer. Because there is something
> like a 15dB disadvantage to Start-Stop TTY signals caused by the
> mechanical selector in the machine.
>
> What some people currently consider the best software demodulator is
> 2Tone, which does not run standalone but runs under N1MM Logger. It
> is free but closed source. I don't know if one could figure out how to
> use the 2Tone module with his own wrapper to make it function as a
> simple demodulator.
>
> Jim W6JVE
>
>
>
>
> ------------------------------
>
> Message: 15
> Date: Thu, 10 Jan 2019 21:18:34 -0600 (CST)
> From: Jim Haynes <jhhaynes at earthlink.net>
> To: Craig Southeren <craig at postincrement.com>
> Cc: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <alpine.DEB.2.20.1901102118100.12981 at Frances>
> Content-Type: text/plain; format=flowed; charset=US-ASCII
>
> The source for fldigi and I think some audio test files as well are on
> the W1HKJ web site.
>
>
>
> ------------------------------
>
> Message: 16
> Date: Fri, 11 Jan 2019 03:22:53 +0000
> From: W7HPW Radio <W7HPW at outlook.com>
> To: Jim Haynes <jhhaynes at earthlink.net>
> Cc: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID:
> <
> BYAPR14MB2374B7B458EB48C9BAD341F1F3850 at BYAPR14MB2374.namprd14.prod.outlook.com
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Jim,
>
> You got the idea
>
> " , but I think what you
> are asking is for software that replaces the demodulator with digital
> signal processing so you can drive a TTY machine with the Baudot output."
>
> Exactly and the reverse, accept TTY keyboard input and produce the tones
> for transmission,
>
> My ST-6 works fine but an upgrade to DSP coding and decoding would be very
> nice!
>
> Mark
>
> -----Original Message-----
> From: Jim Haynes [mailto:jhhaynes at earthlink.net]
> Sent: Thursday, January 10, 2019 7:36 PM
> To: W7HPW Radio
> Cc: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
>
> Yes and no. Of course you are aware of all the computer software that
> turns the computer into a complete RTTY terminal, but I think what you
> are asking is for software that replaces the demodulator with digital
> signal processing so you can drive a TTY machine with the Baudot output.
>
> The earliest DSP software was K6STI's RITTY program. I talked him into
> providing a cleaned-up Baudot output when it was receiving, but didn't
> ask him to provide for a TTY keyboard input. The story of that software
> is that it ran under DOS, required a certain kind of SoundBlaster
> sound card, and was rather expensive. He pulled it off the market
> because it was being pirated, and also never ported it to anything beyond
> DOS and a more generic sound system. I think he said it was not possible
> to do that and maintain the performance it gave.
>
> I shouldn't say that was the earliest - there was probably some using a
> dedicated DSP engine, but K6STIs was the first to use a PC that I know
> of. And you didn't find many Pentium computers running DOS even back
> then.
>
> I think I was told that MMTTY has a Baudot output, but that may not be
> true and I haven't looked.
>
> I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> that is either not possible or is not a high priority. Maybe if more of
> us begged for it he would do it. It is open source, so maybe somebody
> else could do it.
>
> You don't want just an ST-6 equivalent in software; you really want
> regenerated Baudot to go to the printer. Because there is something
> like a 15dB disadvantage to Start-Stop TTY signals caused by the
> mechanical selector in the machine.
>
> What some people currently consider the best software demodulator is
> 2Tone, which does not run standalone but runs under N1MM Logger. It
> is free but closed source. I don't know if one could figure out how to
> use the 2Tone module with his own wrapper to make it function as a
> simple demodulator.
>
> Jim W6JVE
>
>
>
>
> ------------------------------
>
> Message: 17
> Date: Fri, 11 Jan 2019 03:30:27 +0000
> From: W7HPW Radio <W7HPW at outlook.com>
> To: Jim Haynes <jhhaynes at earthlink.net>
> Cc: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID:
> <
> BYAPR14MB2374DF092A15AD7345C56E92F3850 at BYAPR14MB2374.namprd14.prod.outlook.com
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> Jim,
>
> "I think I was told that MMTTY has a Baudot output, but that may not be
> true and I haven't looked."
>
> I have used MMTTY for years, as far as I know it does not
>
> Mark
> W7HPW
>
> -----Original Message-----
> From: Jim Haynes [mailto:jhhaynes at earthlink.net]
> Sent: Thursday, January 10, 2019 7:36 PM
> To: W7HPW Radio
> Cc: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
>
> Yes and no. Of course you are aware of all the computer software that
> turns the computer into a complete RTTY terminal, but I think what you
> are asking is for software that replaces the demodulator with digital
> signal processing so you can drive a TTY machine with the Baudot output.
>
> The earliest DSP software was K6STI's RITTY program. I talked him into
> providing a cleaned-up Baudot output when it was receiving, but didn't
> ask him to provide for a TTY keyboard input. The story of that software
> is that it ran under DOS, required a certain kind of SoundBlaster
> sound card, and was rather expensive. He pulled it off the market
> because it was being pirated, and also never ported it to anything beyond
> DOS and a more generic sound system. I think he said it was not possible
> to do that and maintain the performance it gave.
>
> I shouldn't say that was the earliest - there was probably some using a
> dedicated DSP engine, but K6STIs was the first to use a PC that I know
> of. And you didn't find many Pentium computers running DOS even back
> then.
>
> I think I was told that MMTTY has a Baudot output, but that may not be
> true and I haven't looked.
>
> I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> that is either not possible or is not a high priority. Maybe if more of
> us begged for it he would do it. It is open source, so maybe somebody
> else could do it.
>
> You don't want just an ST-6 equivalent in software; you really want
> regenerated Baudot to go to the printer. Because there is something
> like a 15dB disadvantage to Start-Stop TTY signals caused by the
> mechanical selector in the machine.
>
> What some people currently consider the best software demodulator is
> 2Tone, which does not run standalone but runs under N1MM Logger. It
> is free but closed source. I don't know if one could figure out how to
> use the 2Tone module with his own wrapper to make it function as a
> simple demodulator.
>
> Jim W6JVE
>
>
>
>
> ------------------------------
>
> Message: 18
> Date: Thu, 10 Jan 2019 21:40:05 -0600
> From: Jeffrey Angus <jdangus at att.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <3dbe7833-8449-b28b-3f9e-08b2eb0bdafa at att.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> On 1/10/19 8:35 PM, Jim Haynes wrote:
> > The earliest DSP software was K6STI's RITTY program.
> I remember that. I bought a copy of that "way back when."
> I ran it on a 8 MHz 86286 (12 MHz in the "Turbo" mode.)
> I vaguely remember paying an arm and a leg for the sound
> card back then too.
> I won't swear to it, but I believe the disk and the manual
> had a feather for a logo on it.
>
> --
> "I am a river to my people."
> Jeff-1.0
> WA6FWI
> www.foxsmercantile.com
>
>
>
> ------------------------------
>
> Message: 19
> Date: Thu, 10 Jan 2019 21:52:42 -0600
> From: Jeffrey Angus <jdangus at att.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <68f01cb2-ec88-8f57-6d50-c5839161ccdb at att.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> The real problem here is the Baudot? input/output.
> "Modern" computers don't even? have an RS-232 port.
> You can get PCI or PCIe serial port cards, but it's still
> a problem finding any that will support 5N2 or 5N1-1/5
> operation at any speed below 300 baud.
> Equally problematic is finding any USB to serial adapters
> that will run at the 45/50/75/100 baud ranges.
>
> I have a 25 MHz Pentium PC at the shop I use for "low
> speed" operation. It has the correct 16550A UART chips
> for the serial ports.
> I have a HAL ST-8000A terminal unit that outputs in RS-232.
> And I run the HAL DSRTTY software. With a loop to RS-232
> converter, I can use the DSRTTY software to talk to a Teletype
> machine, or I can connect the teletype machine to the HAL
> ST-8000A TU.
>
>
>
> --
> "I am a river to my people."
> Jeff-1.0
> WA6FWI
> www.foxsmercantile.com
>
>
>
> ------------------------------
>
> Message: 20
> Date: Thu, 10 Jan 2019 21:54:28 -0600
> From: Jeffrey Angus <jdangus at att.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <ff15d690-c214-988c-ed61-3f558829d7f9 at att.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> On 1/10/19 9:52 PM, Jeffrey Angus wrote:
> > a problem finding any that will support 5N2 or 5N1-1/5
> er 5N2 or 5N1-1/2
>
> --
> "I am a river to my people."
> Jeff-1.0
> WA6FWI
> www.foxsmercantile.com
>
>
>
> ------------------------------
>
> Message: 21
> Date: Thu, 10 Jan 2019 21:32:23 -0700
> From: Jordan Spencer Cunningham <js at cunni.co>
> To: Green Keys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID:
> <CADMQ02A0yEXNmiF_qN=
> ofN6krWXb1-t_bwJAFbnbmqXL0qjbSg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> I have written a wrapper of sorts for fldigi into the program I've been
> writing, and I've used that to drive my machines at 45 baud to do what you
> are asking. It's been a lower priority for me, but I've run a few broadcast
> tests with it thus far (see https://www.youtube.com/watch?v=dNjVA9ilpf8
> and
> https://www.youtube.com/watch?v=wF93aENy3UI for examples). Eventually I
> hope to run regular live broadcasts if I can ever get this house we're
> building finished and have a nice dedicated area for my machines again
> instead of leaving them to languish in storage.
>
> But no, fldigi doesn't have direct baudot output. What I've done is wire up
> my software to communicate with fldigi via plaintext-- ASCII, if you will--
> and the USB to TTY boards I built after Eric Volpe's design translate
> between plaintext and baudot and send/receive the signals on the current
> loops. So it's not technically pure baudot all the way through the process,
> but it works for my purposes. Maybe some people turn their noses up at that
> and want to remain purists. That's entirely understandable, but if that's
> the case, you might as well just stick with the HAL hardware.
>
> Eventually I will be sharing what I've created for anyone else to use, but
> it's in a hacky alpha state right now and is thus very unwieldy. I need to
> hone it and add a lot of improvements to make it as user-friendly as
> possible. I only say all this to show that it's possible to do what you
> want with programs like fldigi, but they require further steps to get the
> signal all the way to your machines.
>
> --Jordan
>
> On Thu, Jan 10, 2019 at 8:54 PM Jeffrey Angus <jdangus at att.net> wrote:
>
> > On 1/10/19 9:52 PM, Jeffrey Angus wrote:
> > > a problem finding any that will support 5N2 or 5N1-1/5
> > er 5N2 or 5N1-1/2
> >
> > --
> > "I am a river to my people."
> > Jeff-1.0
> > WA6FWI
> > www.foxsmercantile.com
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 2002-to-present greenkeys archive:
> > http://mailman.qth.net/pipermail/greenkeys/
> > 1998-to-2001 <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
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
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> http://mailman.qth.net/pipermail/greenkeys/attachments/20190110/9c969ff4/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 22
> Date: Fri, 11 Jan 2019 18:57:59 +1100 (EST)
> From: Dave Horsfall <dave at horsfall.org>
> To: Greenkeys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] Greenkeys Search Engine: The Debut of
> Teletype.net
> Message-ID:
> <alpine.BSF.2.21.9999.1901111850130.90857 at aneurin.horsfall.org>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> On Mon, 31 Dec 2018, Jordan Spencer Cunningham wrote:
>
> [...]
>
> > Anyway, for now there is just the Greenkeys search engine. I hope it is
> > useful in helping many people for years to come. It may become redundant
> > if Google ever properly indexes the whole of the archive, but until then
> > I'm happy to make it available for all to use.
>
> Thanks, but I'll be happy if/when Google stops violating their users'
> privacy (their business model), which is why I use DuckDuckGo instead.
>
> -- Dave VK2KFU
>
>
> ------------------------------
>
> Message: 23
> Date: Fri, 11 Jan 2019 10:22:17 +0100
> From: Paul Heller <paul0926 at comcast.net>
> To: W7HPW Radio <W7HPW at outlook.com>, "greenkeys at mailman.qth.net"
> <greenkeys at mailman.qth.net>
> Cc: Jim Haynes <jhhaynes at earthlink.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <44434B67-FD11-4F2A-B894-C108E8002D12 at comcast.net>
> Content-Type: text/plain; charset="utf-8"
>
> I know the hobby is moving (has moved?) to software defined radios,
> digital signal processing, digital ham modes, etc. Even I, by digitizing
> ITTY and broadcasting it out on the internet, am doing some things
> digitally.
>
> Yes I still prefer those ?blinken lights? and the old school analog ways.
> However I feel I am finding myself in a smaller and smaller room, more and
> more alone...
>
> Paul
> W2TTY
>
>
>
> > On Jan 11, 2019, at 4:22 AM, W7HPW Radio <W7HPW at outlook.com> wrote:
> >
> > Jim,
> >
> > You got the idea
> >
> > " , but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output."
> >
> > Exactly and the reverse, accept TTY keyboard input and produce the
> tones for transmission,
> >
> > My ST-6 works fine but an upgrade to DSP coding and decoding would be
> very nice!
> >
> > Mark
> >
> > -----Original Message-----
> > From: Jim Haynes [mailto:jhhaynes at earthlink.net]
> > Sent: Thursday, January 10, 2019 7:36 PM
> > To: W7HPW Radio
> > Cc: greenkeys at mailman.qth.net
> > Subject: Re: [GreenKeys] TU for Computer
> >
> > Yes and no. Of course you are aware of all the computer software that
> > turns the computer into a complete RTTY terminal, but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output.
> >
> > The earliest DSP software was K6STI's RITTY program. I talked him into
> > providing a cleaned-up Baudot output when it was receiving, but didn't
> > ask him to provide for a TTY keyboard input. The story of that software
> > is that it ran under DOS, required a certain kind of SoundBlaster
> > sound card, and was rather expensive. He pulled it off the market
> > because it was being pirated, and also never ported it to anything beyond
> > DOS and a more generic sound system. I think he said it was not possible
> > to do that and maintain the performance it gave.
> >
> > I shouldn't say that was the earliest - there was probably some using a
> > dedicated DSP engine, but K6STIs was the first to use a PC that I know
> > of. And you didn't find many Pentium computers running DOS even back
> > then.
> >
> > I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked.
> >
> > I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> > that is either not possible or is not a high priority. Maybe if more of
> > us begged for it he would do it. It is open source, so maybe somebody
> > else could do it.
> >
> > You don't want just an ST-6 equivalent in software; you really want
> > regenerated Baudot to go to the printer. Because there is something
> > like a 15dB disadvantage to Start-Stop TTY signals caused by the
> > mechanical selector in the machine.
> >
> > What some people currently consider the best software demodulator is
> > 2Tone, which does not run standalone but runs under N1MM Logger. It
> > is free but closed source. I don't know if one could figure out how to
> > use the 2Tone module with his own wrapper to make it function as a
> > simple demodulator.
> >
> > Jim W6JVE
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mailman.qth.net/pipermail/greenkeys/attachments/20190111/cbef7bcf/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 24
> Date: Fri, 11 Jan 2019 08:56:05 -0500
> From: Curt Nixon <radio.ku8l at gmail.com>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <9eb74a62-e253-99fb-2212-0e695597e520 at gmail.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> It IS capable of providing a switched line for doing real FSK so the
> mechanism is there as long as the software likes it for an RX output.
>
> 2Tone will also run under more than just N1MM too.
>
> KU8L
>
> On 01/10/19 10:30 PM, W7HPW Radio wrote:
> > Jim,
> >
> > "I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked."
> >
> > I have used MMTTY for years, as far as I know it does not
> >
> > Mark
> > W7HPW
> >
> > -----Original Message-----
> > From: Jim Haynes [mailto:jhhaynes at earthlink.net]
> > Sent: Thursday, January 10, 2019 7:36 PM
> > To: W7HPW Radio
> > Cc: greenkeys at mailman.qth.net
> > Subject: Re: [GreenKeys] TU for Computer
> >
> > Yes and no. Of course you are aware of all the computer software that
> > turns the computer into a complete RTTY terminal, but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output.
> >
> > The earliest DSP software was K6STI's RITTY program. I talked him into
> > providing a cleaned-up Baudot output when it was receiving, but didn't
> > ask him to provide for a TTY keyboard input. The story of that software
> > is that it ran under DOS, required a certain kind of SoundBlaster
> > sound card, and was rather expensive. He pulled it off the market
> > because it was being pirated, and also never ported it to anything beyond
> > DOS and a more generic sound system. I think he said it was not possible
> > to do that and maintain the performance it gave.
> >
> > I shouldn't say that was the earliest - there was probably some using a
> > dedicated DSP engine, but K6STIs was the first to use a PC that I know
> > of. And you didn't find many Pentium computers running DOS even back
> > then.
> >
> > I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked.
> >
> > I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> > that is either not possible or is not a high priority. Maybe if more of
> > us begged for it he would do it. It is open source, so maybe somebody
> > else could do it.
> >
> > You don't want just an ST-6 equivalent in software; you really want
> > regenerated Baudot to go to the printer. Because there is something
> > like a 15dB disadvantage to Start-Stop TTY signals caused by the
> > mechanical selector in the machine.
> >
> > What some people currently consider the best software demodulator is
> > 2Tone, which does not run standalone but runs under N1MM Logger. It
> > is free but closed source. I don't know if one could figure out how to
> > use the 2Tone module with his own wrapper to make it function as a
> > simple demodulator.
> >
> > Jim W6JVE
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 25
> Date: Fri, 11 Jan 2019 09:39:39 -0500
> From: Duncan Brown <duncanancy at earthlink.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <3b4a84e4-e3bf-a87e-d6f9-79eb70d5ee12 at earthlink.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> For com port output from MMTTY, there is a program that I have used that
> is available from Hamsoft.?? Download "EXTFSK" from
> https://hamsoft.ca/pages/mmtty/ext-fsk.php
>
> As far as a computer with a com port - you can often find old Win XP
> machines that are still usable.? We are using an XP machine that was
> upgraded to Win 7 for our main machine at the AWA Museum.
>
> Have fun,
>
> Duncan
> K2OEQ
>
> On 1/10/2019 22:30, W7HPW Radio wrote:
> > Jim,
> >
> > "I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked."
> >
> > I have used MMTTY for years, as far as I know it does not
> >
> > Mark
> > W7HPW
> >
> >
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 26
> Date: Fri, 11 Jan 2019 09:53:00 -0500
> From: Duncan Brown <duncanancy at earthlink.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <732d939e-58a1-1941-0ded-74c6891b433d at earthlink.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Paul,
>
> I agree!!
>
> Duncan Brown, K2OEQ
> USASA??? 31J30
>
> Antique Wireless Assoc. Museum,
> ? Asst. Curator, Commercial Equipment
> (also chief TTY op & repairman)
>
> www.antiquewireless.org
>
>
> On 1/11/2019 04:22, Paul Heller wrote:
> > I know the hobby is moving (has moved?) to software defined radios,
> > digital signal processing, digital ham modes, etc. ?Even I, by
> > digitizing ITTY and broadcasting it out on the internet, am doing some
> > things digitally.
> >
> > Yes I still prefer those ?blinken lights? and the old school analog
> > ways. However I feel I am finding myself in a smaller and smaller
> > room, more and more alone...
> >
> > Paul
> > W2TTY
> >
> >
> >
> > On Jan 11, 2019, at 4:22 AM, W7HPW Radio <W7HPW at outlook.com
> > <mailto:W7HPW at outlook.com>> wrote:
> >
> >> Jim,
> >>
> >> ? ?You got the idea
> >>
> >> " , but I think what you
> >> are asking is for software that replaces the demodulator with digital
> >> signal processing so you can drive a TTY machine with the Baudot
> output."
> >>
> >> Exactly ?and the reverse, accept TTY keyboard ?input and produce the
> >> tones for transmission,
> >>
> >> My ST-6 works fine but an upgrade to DSP coding and decoding would be
> >> very nice!
> >>
> >> Mark
> >>
> >> -----Original Message-----
> >> From: Jim Haynes [mailto:jhhaynes at earthlink.net]
> >> Sent: Thursday, January 10, 2019 7:36 PM
> >> To: W7HPW Radio
> >> Cc: greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>
> >> Subject: Re: [GreenKeys] TU for Computer
> >>
> >> Yes and no. ?Of course you are aware of all the computer software that
> >> turns the computer into a complete RTTY terminal, but I think what you
> >> are asking is for software that replaces the demodulator with digital
> >> signal processing so you can drive a TTY machine with the Baudot output.
> >>
> >> The earliest DSP software was K6STI's RITTY program. ?I talked him into
> >> providing a cleaned-up Baudot output when it was receiving, but didn't
> >> ask him to provide for a TTY keyboard input. ?The story of that software
> >> is that it ran under DOS, required a certain kind of SoundBlaster
> >> sound card, and was rather expensive. ?He pulled it off the market
> >> because it was being pirated, and also never ported it to anything
> beyond
> >> DOS and a more generic sound system. ?I think he said it was not
> possible
> >> to do that and maintain the performance it gave.
> >>
> >> I shouldn't say that was the earliest - there was probably some using a
> >> dedicated DSP engine, but K6STIs was the first to use a PC that I know
> >> of. ?And you didn't find many Pentium computers running DOS even back
> >> then.
> >>
> >> I think I was told that MMTTY has a Baudot output, but that may not be
> >> true and I haven't looked.
> >>
> >> I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> >> that is either not possible or is not a high priority. ?Maybe if more of
> >> us begged for it he would do it. ?It is open source, so maybe somebody
> >> else could do it.
> >>
> >> You don't want just an ST-6 equivalent in software; you really want
> >> regenerated Baudot to go to the printer. ?Because there is something
> >> like a 15dB disadvantage to Start-Stop TTY signals caused by the
> >> mechanical selector in the machine.
> >>
> >> What some people currently consider the best software demodulator is
> >> 2Tone, which does not run standalone but runs under N1MM Logger. ?It
> >> is free but closed source. ?I don't know if one could figure out how to
> >> use the 2Tone module with his own wrapper to make it function as a
> >> simple demodulator.
> >>
> >> Jim W6JVE
> >>
> >>
> >> ______________________________________________________________
> >> GreenKeys mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:GreenKeys at mailman.qth.net
> >>
> >> 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
> >> Please help support this email list: http://www.qsl.net/donate.html
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 27
> Date: Fri, 11 Jan 2019 10:43:57 -0600
> From: Kevin <kh-phillips at 9-5usa.org>
> To: greenkeys at mailman.qth.net
> Subject: [GreenKeys] Kleinschmidt TT-483/UGC AN/UGC-29X
> Message-ID: <D4D50812-8F53-4FEA-BEE2-0DDE1968FE8E at 9-5usa.org>
> Content-Type: text/plain; charset=us-ascii
>
> Is there an online manual for this machine? Does anyone know where I
> could get a platen crank for it?
>
> Thanks
>
> Kevin
> W5TTY
>
>
>
>
> ------------------------------
>
> Message: 28
> Date: Fri, 11 Jan 2019 12:08:48 -0500
> From: Duncan Brown <duncanancy at earthlink.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] Kleinschmidt TT-483/UGC AN/UGC-29X
> Message-ID: <595cd191-6403-64a1-f9ea-521581b251f8 at earthlink.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Kevin,
>
> The TT-483 is a TT-98 that transmits two standard bits for the stop bit,
> ie, a 8.00 code instead of the standard 7.42 code. So you transmitted
> thru-put will be slightly slower, but the machine is compatible with all
> 5-bit machines.
>
> The manual is TM 11-5815-200-xx and is available at
> http://rattrig.com/manuals/tm's.htm. Take a look at the rest of the
> RATTRIG website to see how the US Army used these machines from the
> 1950s through the 1980s.
>
> Unfortunately, I do not know of any source for parts.
>
> Have fun,
>
> Duncan Brown, K2OEQ
> USASA??? 31J30
>
> Antique Wireless Assoc. Museum,
> ? Asst. Curator, Commercial Equipment
> (also chief TTY op & repairman)
>
> www.antiquewireless.org
>
>
> On 1/11/2019 11:43, Kevin wrote:
> > Is there an online manual for this machine? Does anyone know where I
> could get a platen crank for it?
> >
> > Thanks
> >
> > Kevin
> > W5TTY
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
> >
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 29
> Date: Fri, 11 Jan 2019 15:45:24 -0700
> From: Jordan Spencer Cunningham <js at cunni.co>
> To: Dave Horsfall <dave at horsfall.org>
> Cc: Greenkeys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] Greenkeys Search Engine: The Debut of
> Teletype.net
> Message-ID:
> <
> CADMQ02BB6_KxD7ZTgDDsgzZKveQPt-kAMK2f8R3DxRksXTjr1Q at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> The good news is that the Greenkeys Search Engine doesn't track anything in
> order to honor these exact sentiments. I don't even have any analytics
> services running, and no calls are made to external sites for any scripts
> or anything else. Everything is self-contained. Logs are held for a week or
> two in case I need to troubleshoot an issue, after which they are
> automatically purged. In other words, you should be comforted that you can
> make Greenkeys searches with reasonable assurance of anonymity and privacy,
> assuming you care to make any searches whatsoever.
>
> DuckDuckGo is a venerable alternative to any other search engine. I
> wouldn't hold my breath on Google changing their business model, though.
> Luring people into giving you all their personal data in exchange for
> "free" services is very lucrative these days.
>
> --Jordan
>
> On Fri, Jan 11, 2019 at 12:58 AM Dave Horsfall <dave at horsfall.org> wrote:
>
> > On Mon, 31 Dec 2018, Jordan Spencer Cunningham wrote:
> >
> > [...]
> >
> > > Anyway, for now there is just the Greenkeys search engine. I hope it is
> > > useful in helping many people for years to come. It may become
> redundant
> > > if Google ever properly indexes the whole of the archive, but until
> then
> > > I'm happy to make it available for all to use.
> >
> > Thanks, but I'll be happy if/when Google stops violating their users'
> > privacy (their business model), which is why I use DuckDuckGo instead.
> >
> > -- Dave VK2KFU
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 2002-to-present greenkeys archive:
> > http://mailman.qth.net/pipermail/greenkeys/
> > 1998-to-2001 <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
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
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> >
>
> ------------------------------
>
> Message: 30
> Date: Fri, 11 Jan 2019 19:10:36 -0700
> From: Jordan Spencer Cunningham <js at cunni.co>
> To: Paul Heller <paul0926 at comcast.net>
> Cc: Green Keys <greenkeys at mailman.qth.net>, Jim Haynes
> <jhhaynes at earthlink.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID:
> <
> CADMQ02C82Tno1jUCLQffhAcMyh0U0ru9ZUy1+m3RCkCGfpEkwg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Paul,
>
> That's definitely true. It's both a good and bad thing in my view (young
> whippersnapper that I am). Even though I'm a big proponent of integrating
> the heavy metal with modern computers in an effort to make the old machines
> more usable and easier to use for future generations, I'm also a proponent
> of the old ways. If I weren't, I wouldn't have several hundred pounds of
> nearly century-old communications equipment lying around, I guess. :) I
> just haven't been able to get my hands on any of the analog modem stuff
> yet, and admittedly it's farther down on my list. It's one of those "one
> day" items. "One day" I hope to join you in that small room whilst still
> running some things digitally as well.
>
> Seeing as how I'm only a few years into the hobby and live in the Great
> Teletype Black Hole, yet I can now claim seven teletypes to my name, "one
> day" may come sooner than I thought!
>
> --Jordan
>
> On Fri, Jan 11, 2019 at 2:22 AM Paul Heller <paul0926 at comcast.net> wrote:
>
> > I know the hobby is moving (has moved?) to software defined radios,
> > digital signal processing, digital ham modes, etc. Even I, by digitizing
> > ITTY and broadcasting it out on the internet, am doing some things
> > digitally.
> >
> > Yes I still prefer those ?blinken lights? and the old school analog ways.
> > However I feel I am finding myself in a smaller and smaller room, more
> and
> > more alone...
> >
> > Paul
> > W2TTY
> >
> >
> >
> > On Jan 11, 2019, at 4:22 AM, W7HPW Radio <W7HPW at outlook.com> wrote:
> >
> > Jim,
> >
> > You got the idea
> >
> > " , but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output."
> >
> > Exactly and the reverse, accept TTY keyboard input and produce the
> tones
> > for transmission,
> >
> > My ST-6 works fine but an upgrade to DSP coding and decoding would be
> very
> > nice!
> >
> > Mark
> >
> > -----Original Message-----
> > From: Jim Haynes [mailto:jhhaynes at earthlink.net <jhhaynes at earthlink.net
> >]
> > Sent: Thursday, January 10, 2019 7:36 PM
> > To: W7HPW Radio
> > Cc: greenkeys at mailman.qth.net
> > Subject: Re: [GreenKeys] TU for Computer
> >
> > Yes and no. Of course you are aware of all the computer software that
> > turns the computer into a complete RTTY terminal, but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output.
> >
> > The earliest DSP software was K6STI's RITTY program. I talked him into
> > providing a cleaned-up Baudot output when it was receiving, but didn't
> > ask him to provide for a TTY keyboard input. The story of that software
> > is that it ran under DOS, required a certain kind of SoundBlaster
> > sound card, and was rather expensive. He pulled it off the market
> > because it was being pirated, and also never ported it to anything beyond
> > DOS and a more generic sound system. I think he said it was not possible
> > to do that and maintain the performance it gave.
> >
> > I shouldn't say that was the earliest - there was probably some using a
> > dedicated DSP engine, but K6STIs was the first to use a PC that I know
> > of. And you didn't find many Pentium computers running DOS even back
> > then.
> >
> > I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked.
> >
> > I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> > that is either not possible or is not a high priority. Maybe if more of
> > us begged for it he would do it. It is open source, so maybe somebody
> > else could do it.
> >
> > You don't want just an ST-6 equivalent in software; you really want
> > regenerated Baudot to go to the printer. Because there is something
> > like a 15dB disadvantage to Start-Stop TTY signals caused by the
> > mechanical selector in the machine.
> >
> > What some people currently consider the best software demodulator is
> > 2Tone, which does not run standalone but runs under N1MM Logger. It
> > is free but closed source. I don't know if one could figure out how to
> > use the 2Tone module with his own wrapper to make it function as a
> > simple demodulator.
> >
> > Jim W6JVE
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net <GreenKeys at mailman.qth.net>
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 2002-to-present greenkeys archive:
> > http://mailman.qth.net/pipermail/greenkeys/
> > 1998-to-2001 <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
> > Please help support this email list: http://www.qsl.net/donate.html
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mailman.qth.net/pipermail/greenkeys/attachments/20190111/f465f1d7/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 31
> Date: Fri, 11 Jan 2019 21:06:24 -0600
> From: "Kevin H. Phillips" <kh-phillips at 9-5usa.org>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] Kleinschmidt TT-483/UGC AN/UGC-29X
> Message-ID: <9ef1dc1d-125b-1e7b-7ae4-f03a34ec8854 at 9-5usa.org>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Thanks, Duncan.? I just got this machine yesterday and haven't had time
> to check it out.? It looks pretty good; just a little dusty.? I'm
> guessing it might only need a little cleaning and lubing to work.? I got
> it off eBay.? The Seller lived about a hundred miles from me.? He'd had
> it listed for $350/OBO for a long time.? I finally offered him $100.? He
> countered with $150 because it was a very "rare" military machine.? I
> told him it wasn't *that* rare and since he hadn't tested it I didn't
> want to pay that much for a possible rust bucket or rat motel.? He came
> back and said he'd deliver it *personally* to me if I'd pay $150 . . .
> so I did.? Yeah, I know:? still too high.? But, they don't come up
> around here very often.? He was a nice guy.? He said his wife picked it
> up at an estate sale because it was "neat".? It made me wonder if it had
> belonged to a ham.? He didn't have a clue what it was or how it worked.?
> I explained it would need at least a current loop (not that he knew what
> that was) in order to work at all and a modem or converter to do
> anything else.? He mainly seemed to be happy to have an excuse to get
> away from the house to deliver the machine.?? Tomorrow I'll try to pop
> the top, take a few pictures, and maybe post them here.
>
>
> 73
>
> Kevin
>
> W5TTY
>
> On 1/11/2019 11:08 AM, Duncan Brown wrote:
> > Kevin,
> >
> > The TT-483 is a TT-98 that transmits two standard bits for the stop
> > bit, ie, a 8.00 code instead of the standard 7.42 code. So you
> > transmitted thru-put will be slightly slower, but the machine is
> > compatible with all 5-bit machines.
> >
> > The manual is TM 11-5815-200-xx and is available at
> > http://rattrig.com/manuals/tm's.htm. Take a look at the rest of the
> > RATTRIG website to see how the US Army used these machines from the
> > 1950s through the 1980s.
> >
> > Unfortunately, I do not know of any source for parts.
> >
> > Have fun,
> >
> > Duncan Brown, K2OEQ
> > USASA??? 31J30
> >
> > Antique Wireless Assoc. Museum,
> > ? Asst. Curator, Commercial Equipment
> > (also chief TTY op & repairman)
> >
> > www.antiquewireless.org
> >
> >
> > On 1/11/2019 11:43, Kevin wrote:
> >> Is there an online manual for this machine??? Does anyone know where
> >> I could get a platen crank for it?
> >>
> >> Thanks
> >>
> >> Kevin
> >> W5TTY
> >>
> >>
> >> ______________________________________________________________
> >> GreenKeys mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:GreenKeys at mailman.qth.net
> >>
> >> 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
> >> Please help support this email list: http://www.qsl.net/donate.html
> >>
> >
> >
> > ---
> > This email has been checked for viruses by Avast antivirus software.
> > https://www.avast.com/antivirus
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
> ------------------------------
>
> Message: 32
> Date: Fri, 11 Jan 2019 21:31:54 -0600 (CST)
> From: Jim Haynes <jhhaynes at earthlink.net>
> To: Jordan Spencer Cunningham <js at cunni.co>
> Cc: Green Keys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <alpine.DEB.2.20.1901112107370.10102 at Frances>
> Content-Type: text/plain; format=flowed; charset=US-ASCII
>
> Let me suggest you guys who are savvy about DSP
> (1) Look at the source code to fldigi
> (2) Look at the www.w7ay.net Chen who runs that site is one of the
> foremost experts on FSK reception and you can find pretty much the
> best possible demodulator design ideas there
>
> Then what you want to do is implement the FSK demodulator using DSP
> but not necessarily turn it into ASCII for display on the screen.
> You do want something in the way of a tuning indicator tho. Then
> having got the demodulated FSK you want to put it through a regenerative
> repeater, and in fact a UART will do that if you don't choose to do it
> in software. But software might yield a better performing item.
> What you wind up with is a DSP replacement for the hardware demodulator
> and regenerator.
>
> Aside from just demodulating the bits, here is what the regenerator is
> all about. The mechanical Teletype has a mechanical selector, the
> serial-to-parallel converter, and that is the weakest part of the
> whole scheme. If you get a false start pulse the selector cam starts
> rotating falsely and it takes a while for it to get back where it
> belongs. And if the stop pulse is mutilated the selector cam will
> keep rotating when it should have latched up, and again will take
> several revolutions to get back where it belongs.
>
> Without this the character error rate would simply be about 5 times
> the bit error rate since there are 5 bits per character. But because
> of the selector clutching problem a false start or bad stop will cause
> several erroneous characters to be printed.
>
> So one thing you would like the regenerator to do is to be sure the
> start pulse is at least half as long as it should be, rather than starting
> on any little glitch. And then if the stop pulse isn't there when it
> should be the regenerator can stop anyway.
>
> Now to some extent I think you can prevent those glitches anyway if
> the bandwidth of filtering is such that they don't get through - so
> you filter for the expected duration of correct pulses.
>
> So maybe you can come up with some kind of little box maybe using a
> Raspberry Pi which is a single-purpose DSP engine for RTTY demodulation
> and essentially replaces the older hardware demodulators. Or you could
> have a program that runs in a PC alongside everything else.
>
> On the transmitting side there is nothing really wrong with just having
> the keyboard contacts control an audio frequency shift oscillator and
> put that into the SSB transmitter. Of course you can do that with DSP
> also. What seems popular today is "diddle", where the system transmits
> some kind of idle characters when you are not typing on the keyboard.
> There is much to be said about that, but I won't go into it right now.
>
> Other than the above hand-waving I'm not doing any work in this field
> because for one thing I'm too old to take up DSP programming and for
> another RTTY is such a rarely used mode these days for anything but
> DX chasing and contesting and I don't do either of those.
>
> Jim W6JVE
>
>
>
> ------------------------------
>
> Message: 33
> Date: Fri, 11 Jan 2019 14:14:04 +1100
> From: Craig Southeren <craig at postincrement.com>
> To: Jim Haynes <jhhaynes at earthlink.net>
> Cc: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <4A4AD82B-1D20-4497-9661-6CE3992F8F25 at postincrement.com>
> Content-Type: text/plain; charset=utf-8
>
> My background is in VoIP, and I?ve spent a lot of hours working with
> software fax demodulators and modulators. There are quite a few of these as
> open source. Most work to 4800 baud, and some even do 9600 baud.
>
> Modding one of these to do baudot FSK at 50 baud would be fairly simple. I
> might be interested in doing this if someone can provide a sample audio file
>
> BTW: my first computer used a model 15 teletype for I/O. One of these days
> I?ll find get another noisy green monster so I can show my kids and grand
> kids what the past was really like
>
> Sent from my iPhone
>
> > On 11 Jan 2019, at 13:35, Jim Haynes <jhhaynes at earthlink.net> wrote:
> >
> > Yes and no. Of course you are aware of all the computer software that
> > turns the computer into a complete RTTY terminal, but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output.
> >
> > The earliest DSP software was K6STI's RITTY program. I talked him into
> > providing a cleaned-up Baudot output when it was receiving, but didn't
> > ask him to provide for a TTY keyboard input. The story of that software
> > is that it ran under DOS, required a certain kind of SoundBlaster
> > sound card, and was rather expensive. He pulled it off the market
> > because it was being pirated, and also never ported it to anything beyond
> > DOS and a more generic sound system. I think he said it was not possible
> > to do that and maintain the performance it gave.
> >
> > I shouldn't say that was the earliest - there was probably some using a
> > dedicated DSP engine, but K6STIs was the first to use a PC that I know
> > of. And you didn't find many Pentium computers running DOS even back
> > then.
> >
> > I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked.
> >
> > I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> > that is either not possible or is not a high priority. Maybe if more of
> > us begged for it he would do it. It is open source, so maybe somebody
> > else could do it.
> >
> > You don't want just an ST-6 equivalent in software; you really want
> > regenerated Baudot to go to the printer. Because there is something
> > like a 15dB disadvantage to Start-Stop TTY signals caused by the
> > mechanical selector in the machine.
> >
> > What some people currently consider the best software demodulator is
> > 2Tone, which does not run standalone but runs under N1MM Logger. It
> > is free but closed source. I don't know if one could figure out how to
> > use the 2Tone module with his own wrapper to make it function as a
> > simple demodulator.
> >
> > Jim W6JVE
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
> ------------------------------
>
> Message: 34
> Date: Sat, 12 Jan 2019 02:12:42 +1100
> From: <craig at postincrement.com>
> To: "'Jim Haynes'" <jhhaynes at earthlink.net>
> Cc: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> After a few hours of tinkering, I was able to decode the sample WAV file
> on the w1hkj.com site at:
>
> Page: http://www.w1hkj.com/modes/index.htm
> File: http://www.w1hkj.com/modes/Baudot45-170.wav
>
> The decoded text comes out as "NOW IS THE TIME FOR ALL" ?
>
> The code uses an integer implementation of the Goertzel Algorithm
> originally written by Poul-Henning Kamp <phk at freebsd.org> to decode DTMF
> tones. It's very robust, and I've been using it for 20 years for VoIP
> applications.
>
> The next step would be to clean the code up to allow specifying the mark
> and space frequencies, and then connect it up to a sound card driver. It
> could then be tested with a real-time audio stream from somewhere.
>
> If there is any interest, I'd be happy to keep tinkering. I can also put
> the code up on BitBucket if anyone is interested.
>
> The actual output from the program is below:
>
> filename: Baudot45-170.wav
> sample rate:8000
> samples: 39948
> channels: 1
> data: 1f LTRS
> data: 0c N
> data: 18 O
> data: 13 W
> data: 1f LTRS
> data: 04 SPC
> data: 06 I
> data: 05 S
> data: 1f LTRS
> data: 04 SPC
> data: 10 T
> data: 14 H
> data: 01 E
> data: 1f LTRS
> data: 04 SPC
> data: 10 T
> data: 06 I
> data: 1c M
> data: 01 E
> data: 1f LTRS
> data: 04 SPC
> data: 0d F
> data: 18 O
> data: 0a R
> data: 1f LTRS
> data: 04 SPC
> data: 03 A
> data: 12 L
> data: 12 L
>
> Craig Southeren
> Post Increment Consulting and Software
> craigs at postincrement.com
> www.postincrement.com
> US: +1 415 800 4201
> Mobile: +61 417231046
>
>
> -----Original Message-----
> From: Craig Southeren <craig at postincrement.com>
> Sent: Friday, 11 January 2019 2:14 PM
> To: Jim Haynes <jhhaynes at earthlink.net>
> Cc: W7HPW Radio <W7HPW at outlook.com>; greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] TU for Computer
>
> My background is in VoIP, and I?ve spent a lot of hours working with
> software fax demodulators and modulators. There are quite a few of these as
> open source. Most work to 4800 baud, and some even do 9600 baud.
>
> Modding one of these to do baudot FSK at 50 baud would be fairly simple. I
> might be interested in doing this if someone can provide a sample audio file
>
> BTW: my first computer used a model 15 teletype for I/O. One of these days
> I?ll find get another noisy green monster so I can show my kids and grand
> kids what the past was really like
>
> Sent from my iPhone
>
> > On 11 Jan 2019, at 13:35, Jim Haynes <jhhaynes at earthlink.net> wrote:
> >
> > Yes and no. Of course you are aware of all the computer software that
> > turns the computer into a complete RTTY terminal, but I think what you
> > are asking is for software that replaces the demodulator with digital
> > signal processing so you can drive a TTY machine with the Baudot output.
> >
> > The earliest DSP software was K6STI's RITTY program. I talked him
> > into providing a cleaned-up Baudot output when it was receiving, but
> > didn't ask him to provide for a TTY keyboard input. The story of that
> > software is that it ran under DOS, required a certain kind of
> > SoundBlaster sound card, and was rather expensive. He pulled it off
> > the market because it was being pirated, and also never ported it to
> > anything beyond DOS and a more generic sound system. I think he said
> > it was not possible to do that and maintain the performance it gave.
> >
> > I shouldn't say that was the earliest - there was probably some using
> > a dedicated DSP engine, but K6STIs was the first to use a PC that I
> > know of. And you didn't find many Pentium computers running DOS even
> > back then.
> >
> > I think I was told that MMTTY has a Baudot output, but that may not be
> > true and I haven't looked.
> >
> > I've begged Dave W1HKJ to add a Baudot output to fldigi but apparently
> > that is either not possible or is not a high priority. Maybe if more
> > of us begged for it he would do it. It is open source, so maybe
> > somebody else could do it.
> >
> > You don't want just an ST-6 equivalent in software; you really want
> > regenerated Baudot to go to the printer. Because there is something
> > like a 15dB disadvantage to Start-Stop TTY signals caused by the
> > mechanical selector in the machine.
> >
> > What some people currently consider the best software demodulator is
> > 2Tone, which does not run standalone but runs under N1MM Logger. It
> > is free but closed source. I don't know if one could figure out how
> > to use the 2Tone module with his own wrapper to make it function as a
> > simple demodulator.
> >
> > Jim W6JVE
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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 Please help support this email
> > list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 35
> Date: Sat, 12 Jan 2019 10:12:46 -0500
> From: Duncan Brown <duncanancy at earthlink.net>
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] Kleinschmidt TT-483/UGC AN/UGC-29X
> Message-ID: <bfff0a0e-a556-651b-2990-507a8c520a71 at earthlink.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Kevin,
>
> Yes, $150 seems high, but if its what you want & included delivery, not
> too bad!
>
> Are you familiar with the Kleinschmidt line? They were the main supplier
> of TTYs to the US Army & USAF from 1950 into the 1980s.
>
> Your TT-483 may have a built-in loop supply. If it is there, it will be
> under the paper roll. There is a selector switch in the rear left
> corner. Put it in "TEST" for local operation with the internal loop supply.
>
> Although they probably were not engaged, there are a couple of shipping
> latches that must be disengaged before operation. See TM 11-5815-200-12
>
> Good luck & have fun,
>
> Duncan
> K2OEQ
>
> On 1/11/2019 22:06, Kevin H. Phillips wrote:
> > Thanks, Duncan.? I just got this machine yesterday and haven't had
> > time to check it out.? It looks pretty good; just a little dusty.? I'm
> > guessing it might only need a little cleaning and lubing to work. I
> > got it off eBay.? The Seller lived about a hundred miles from me.?
> > He'd had it listed for $350/OBO for a long time.? I finally offered
> > him $100.? He countered with $150 because it was a very "rare"
> > military machine.? I told him it wasn't *that* rare and since he
> > hadn't tested it I didn't want to pay that much for a possible rust
> > bucket or rat motel.? He came back and said he'd deliver it
> > *personally* to me if I'd pay $150 . . . so I did. Yeah, I know:?
> > still too high.? But, they don't come up around here very often.? He
> > was a nice guy.? He said his wife picked it up at an estate sale
> > because it was "neat".? It made me wonder if it had belonged to a
> > ham.? He didn't have a clue what it was or how it worked.? I explained
> > it would need at least a current loop (not that he knew what that was)
> > in order to work at all and a modem or converter to do anything else.?
> > He mainly seemed to be happy to have an excuse to get away from the
> > house to deliver the machine.?? Tomorrow I'll try to pop the top, take
> > a few pictures, and maybe post them here.
> >
> >
> > 73
> >
> > Kevin
> >
> > W5TTY
> >
> > On 1/11/2019 11:08 AM, Duncan Brown wrote:
> >> Kevin,
> >>
> >> The TT-483 is a TT-98 that transmits two standard bits for the stop
> >> bit, ie, a 8.00 code instead of the standard 7.42 code. So you
> >> transmitted thru-put will be slightly slower, but the machine is
> >> compatible with all 5-bit machines.
> >>
> >> The manual is TM 11-5815-200-xx and is available at
> >> http://rattrig.com/manuals/tm's.htm. Take a look at the rest of the
> >> RATTRIG website to see how the US Army used these machines from the
> >> 1950s through the 1980s.
> >>
> >> Unfortunately, I do not know of any source for parts.
> >>
> >> Have fun,
> >>
> >> Duncan Brown, K2OEQ
> >> USASA??? 31J30
> >>
> >> Antique Wireless Assoc. Museum,
> >> ? Asst. Curator, Commercial Equipment
> >> (also chief TTY op & repairman)
> >>
> >> www.antiquewireless.org
> >>
> >>
> >> On 1/11/2019 11:43, Kevin wrote:
> >>> Is there an online manual for this machine??? Does anyone know where
> >>> I could get a platen crank for it?
> >>>
> >>> Thanks
> >>>
> >>> Kevin
> >>> W5TTY
> >>>
> >>>
> >>> ______________________________________________________________
> >>> GreenKeys mailing list
> >>> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> >>> Help: http://mailman.qth.net/mmfaq.htm
> >>> Post: mailto:GreenKeys at mailman.qth.net
> >>>
> >>> 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
> >>> Please help support this email list: http://www.qsl.net/donate.html
> >>>
> >>
> >>
> >> ---
> >> This email has been checked for viruses by Avast antivirus software.
> >> https://www.avast.com/antivirus
> >>
> >> ______________________________________________________________
> >> GreenKeys mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:GreenKeys at mailman.qth.net
> >>
> >> 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
> >> Please help support this email list: http://www.qsl.net/donate.html
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 36
> Date: Tue, 15 Jan 2019 20:45:16 +0000
> From: Sam Hallas <s.hallas at ntlworld.com>
> To: GreenKeys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] Post Office Telegraphs at the races
> Message-ID: <5af434cb-9ebe-6c41-f874-a925f27fa177 at ntlworld.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Writing about Ascot race course in the UK an article in the Post Office
> Magazine for 1937 says:
>
> "At the 1928 meeting the instruments in use were Teletypes (Morkrum lA),
> 'Quads', Wheatstones and Keyboard Perforators. The staff required was
> two Assistant Superintendents, two Overseers and 45 Telegraphists. In
> 1929 four circuits were equipped with Teleprinters, and by 1931
> Teleprinters were in use on all the circuits."
>
> It confirms that the Post Office used Teletype equipment in those early
> days, but doesn't answer Martin Loach's earlier question about which
> model was designated Post Office No2. Later, of course they went over
> entirely to Creed machines.
>
> Cheers,
> Sam
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 37
> Date: Tue, 15 Jan 2019 16:53:52 -0500
> From: Nick England <navy.radio at gmail.com>
> To: Greenkeys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] 28KSR skintight - Jacksonville FL
> Message-ID:
> <CAB55hNeddgTAscLyGU+-k8oLHFcgQ==W6vqC0KGuxLA=
> D+gCEg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> https://www.etsy.com/listing/600486867/local-pickup-only-jax-fl-antique
> $200 is too much for a unit in unknown condition (other than it looks
> poor), but if you are local it might be worth a visit to check out the
> condition of the insides and to see if the seller will take a reasonable
> offer.
> Not mine, no connection, etc. etc,
> Nick England K4NYW
> www.navy-radio.com
> -------------- next part --------------
> An HTML attachment was scrubbed...
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> http://mailman.qth.net/pipermail/greenkeys/attachments/20190115/8103ea6c/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 38
> Date: Wed, 16 Jan 2019 12:08:44 -0500
> From: Duncan Brown <duncanancy at earthlink.net>
> To: Green Keys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] OT - Amateur Radio History - AWA video
> Message-ID: <a6e9b935-dd58-96c7-d520-eebdebccbf87 at earthlink.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> OT - But I know that there are a lot of hams on this list.
>
> The Antique Wireless Association Museum has been making some videos of
> our collections.
>
> Here is one just done by Ed Gable, K2MP, Curator Emeritus of the Museum,
> on a small part of our Amateur Radio collection, including spark
> transmitters. (We will be opening a 1500 sq ft addition later in the
> year, which will be mainly Amateur Radio.)
>
> The link is: https://www.youtube.com/watch?v=HCLAUFfFiwo
>
> Have fun,
>
> Duncan Brown, K2OEQ
> USASA??? 31J30
>
> Antique Wireless Assoc. Museum,
> ? Asst. Curator, Commercial Equipment
> (also chief TTY op & repairman)
>
> www.antiquewireless.org
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
>
> ------------------------------
>
> Message: 39
> Date: Wed, 16 Jan 2019 12:52:45 -0500
> From: "Steve Garrison" <steve.n4tty at gmail.com>
> To: "'Duncan Brown'" <duncanancy at earthlink.net>, "'Green Keys'"
> <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] OT - Amateur Radio History - AWA video
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="utf-8"
>
> Thanks for the link Duncan! Very interesting piece by Ed, K2MP.
>
> Steve G.N4TTY
>
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net>
> On Behalf Of Duncan Brown
> Sent: Wednesday, January 16, 2019 12:09 PM
> To: Green Keys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] OT - Amateur Radio History - AWA video
>
> OT - But I know that there are a lot of hams on this list.
>
> The Antique Wireless Association Museum has been making some videos of our
> collections.
>
> Here is one just done by Ed Gable, K2MP, Curator Emeritus of the Museum,
> on a small part of our Amateur Radio collection, including spark
> transmitters. (We will be opening a 1500 sq ft addition later in the year,
> which will be mainly Amateur Radio.)
>
> The link is: https://www.youtube.com/watch?v=HCLAUFfFiwo
>
> Have fun,
>
> Duncan Brown, K2OEQ
> USASA 31J30
>
> Antique Wireless Assoc. Museum,
> Asst. Curator, Commercial Equipment
> (also chief TTY op & repairman)
>
> www.antiquewireless.org
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> 1998-to-2001 <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
> Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 40
> Date: Wed, 16 Jan 2019 19:47:54 +0100
> From: yoeri He <yoeriforums at gmail.com>
> To: GreenKeys at mailman.qth.net
> Subject: [GreenKeys] tt7 part
> Message-ID:
> <CAMau0+edL=Kt+5wmJb+FqV=
> H9QswD1C9fqhogW+7w3ZVm8y7wg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> hi all
>
> posted this a while back already but seems nobody could help me than.
> so again a try
>
>
> to restore my newly aquired tg7/m15 i'm looking for part 74909 according to
> ee-476 (addition of 43 to bulletin 1110)
>
> this is the right side frame of the typing part of the m15/tg7. ( the side
> where the bell is mounted on)
>
> hope any of you have one for sale , if possible in europe.
>
>
> kind regards
>
> yoeri
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 41
> Date: Wed, 16 Jan 2019 14:01:05 -0500
> From: Hugh Pyle <hpyle at cabezal.com>
> To: Greenkeys <GreenKeys at mailman.qth.net>
> Subject: [GreenKeys] 33 document holder
> Message-ID:
> <
> CALvn94LgcHf_T1OBO9-MyEV-X0nqjzxB6a1WavbY1udKG8aDHw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> I'm on the lookout for a couple pieces to complete my Model 33,
> - Metal back panel for the pedestal
> - Document holder
>
> If anyone has these items & would consider parting with them, please let me
> know off-list!
> Thanks!
>
>
> Hugh
> -------------- next part --------------
> An HTML attachment was scrubbed...
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> http://mailman.qth.net/pipermail/greenkeys/attachments/20190116/8625686f/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 42
> Date: Wed, 16 Jan 2019 11:19:22 -0800
> From: "tony.podrasky" <tony.podrasky at gmail.com>
> To: Hugh Pyle <hpyle at cabezal.com>, Greenkeys
> <GreenKeys at mailman.qth.net>
> Subject: Re: [GreenKeys] 33 document holder
> Message-ID: <5C3F83BA.2070301 at gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> You might check with Paul the Teletype guy.
>
> regards,
> tony
>
>
> On 01/16/2019 11:01 AM, Hugh Pyle wrote:
> > Hi all,
> >
> > I'm on the lookout for a couple pieces to complete my Model 33,
> > - Metal back panel for the pedestal
> > - Document holder
> >
> > If anyone has these items & would consider parting with them, please let
> > me know off-list!
> > Thanks!
> >
> >
> > Hugh
> >
> >
> >
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> >
> > 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
> > Please help support this email list: http://www.qsl.net/donate.html
> >
>
> --
> The principle difference between a toy and a game is
> the latter has some clearly defined goal or purpose;
> therefore life is not a game, but a toy.
> -Rahner James
>
>
> ------------------------------
>
> Message: 43
> Date: Thu, 17 Jan 2019 02:17:22 +0000 (UTC)
> From: Thomas Tillson <til128 at aol.com>
> To: greenkeys at mailman.qth.net
> Subject: [GreenKeys] Unauthorized 14 TD MOD kit
> Message-ID: <1961373222.949620.1547691442621 at mail.yahoo.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi gang:
>
> I have come up with a MOD to place rubber feet on the bottomof the 14TD to
> replace the flat head screws to offer the stopping of the possibilityof
> scratching the dining room?table :-) and to offer some sound isolation.See
> pix.
> I have 2 sets left to offer for the price of postage to the first and
> second person asking for them.
> Pls contact me off list.
> Tom WB2TTY
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> End of GreenKeys Digest, Vol 180, Issue 3
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