[GreenKeys] ITTY to real Teletype
John Spigel
w1an.dxusa at gmail.com
Sun Nov 10 22:09:57 EST 2024
Rob, I have several very simple shell scripts here for running the
different ITTY sources or printing files for RazPi.
https://w1an.com/files/tty-shell-scripts
The ITTY for US runs continuously.
Maybe see if they are of use to you.
73, John W1AN
On 10-Nov-24 13:03, Rob Jarratt via GreenKeys wrote:
> Looks like curl -N should do the trick them without me having to write a
> special program to keep it running. I wish I had checked the other feeds
> before assuming curl just exits after every message!
>
> Regards
>
> Rob
>
> *From:*Paul Heller <paul0926 at comcast.net>
> *Sent:* 10 November 2024 14:40
> *To:* rob at jarratt.me.uk; Rob Jarratt <robert.jarratt at ntlworld.com>
> *Cc:* Hugh Pyle <hughpyle at gmail.com>; Jeffrey Golas <jeffg at junknet.net>;
> Mailing List Green Keys <GreenKeys at mailman.qth.net>
> *Subject:* Re: [GreenKeys] ITTY to real Teletype
>
> That is strange that the Europe channel is ok and the ITTY channel is
> not. I’d like to resolve this.
>
> The ITTY channels each have a footer transmission after the main
> transmission. Maybe the footers are different. I will look into this
> later today.
>
> Paul
> W2TTY
>
>
> On Nov 10, 2024, at 1:52 PM, Rob Jarratt via GreenKeys
> <greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>> wrote:
>
>
>
> I have been trying these suggestions using curl to receive ITTY and
> pipe it through lame and minimodem. It works well.
>
> However, I didn’t like that curl exits after every message. So, I
> thought I would try to write my own code that keeps going, using
> libcurl, which is what curl is built from.
>
> I discovered though that the ITTY feed does something strange and it
> causes curl (and libcurl) to just silently exit at the end of a
> message. It never reaches my cleanup code, it just dies. I thought
> it was a problem with my code, but I don’t think it is, there is
> something specifically wrong with http://internet-tty.net:8000/ITTY
> <http://internet-tty.net:8000/ITTY> that cause curl to die. I have
> been trying to work it out but have not found the issue yet. Is
> anyone aware of anything peculiar about the ITTY feed? It doesn’t
> seem to happen for the EUROPE feed, I am not sure yet about
> AUTOSTART and it is able to repeatedly download other URLs
> (www.example.com <http://www.example.com> for example).
>
> Thanks
>
> Rob
>
> *From:*greenkeys-bounces at mailman.qth.net <mailto:greenkeys-
> bounces at mailman.qth.net><greenkeys-bounces at mailman.qth.net
> <mailto:greenkeys-bounces at mailman.qth.net>> *On Behalf Of *Hugh Pyle
> *Sent:* 07 October 2024 20:06
> *To:* Jeffrey Golas <jeffg at junknet.net <mailto:jeffg at junknet.net>>
> *Cc:* Mailing List Green Keys <GreenKeys at mailman.qth.net
> <mailto:GreenKeys at mailman.qth.net>>; rob at jarratt.me.uk
> <mailto:rob at jarratt.me.uk>
> *Subject:* Re: [GreenKeys] ITTY to real Teletype
>
> Here are some aliases, which combine 'curl', 'lame' and
> 'minimodem'. I haven't run these unattended for a while, and I
> seem to remember there are dropout situations that will break them
> easily - so you could then wrap everything in a loop if necessary.
> But they might make a good starting point for you.
>
>
> alias autostart='curl -N -s http://internet-tty.net:8030/AUTOSTART
> <http://internet-tty.net:8030/AUTOSTART> | lame --decode --quiet --
> mp3input - - | minimodem rtty -i -a -q -R 11025 -f -'
> alias europe='curl -N -s internet-tty.net:8040/EUROPE <http://
> internet-tty.net:8040/EUROPE> | lame --decode --quiet --mp3input - -
> | minimodem 50 -M 1275 -S 1445 -5 -i -a -q -R 11025 -f -'
> alias itty='curl -N -s http://internet-tty.net:8000/ITTY <http://
> internet-tty.net:8000/ITTY> | lame --decode --quiet --mp3input - - |
> minimodem rtty -i -a -q --rx-one -R 11025 -f -'
>
> Hugh
>
> On Sun, Oct 6, 2024 at 10:15 AM Jeffrey Golas <jeffg at junknet.net
> <mailto:jeffg at junknet.net>> wrote:
>
> Vlc to get the stream, minimodem to decode.
>
> Jeff
>
> > On Oct 6, 2024, at 3:18 AM, Rob Jarratt
> <robert.jarratt at ntlworld.com
> <mailto:robert.jarratt at ntlworld.com>> wrote:
> >
> > Hello,
> >
> > Dave was asking this on my behalf, probably unaware that I am
> on this list too.
> >
> > I have seen mention of ITTY Autostart etc and wondered about
> receiving all this on my ASR 33.
> >
> > My thought was to see if I could set up a Raspberry Pi to
> receive the audio signal over the internet, translate that to
> ASCII and then send it to my ASR33. I already have the means to
> connect my ASR33 from software running on a Raspberry PI or a PC
> via reverse Telnet. The bit I am missing is what software (if
> any) there might be that I could run on a Raspberry Pi, or
> Windows that runs in the background (no GUI) to decode the ITTY
> audio signal. I am a software developer though, so I guess if
> such a thing doesn't exist then perhaps I can modify the MMTTY
> code that is published on GitHub.
> >
> > Any pointers would be welcome.
> >
> > Thanks
> >
> > Rob
> >
> >> -----Original Message-----
> >> From: greenkeys-bounces at mailman.qth.net <mailto:greenkeys-
> bounces at mailman.qth.net> <greenkeys-
> >> bounces at mailman.qth.net <mailto:bounces at mailman.qth.net>> On
> Behalf Of Jeffrey Golas
> >> Sent: 06 October 2024 05:30
> >> To: David Wade <dave.g4ugm at gmail.com
> <mailto:dave.g4ugm at gmail.com>>
> >> Cc: Mailing List Green Keys <GreenKeys at mailman.qth.net
> <mailto:GreenKeys at mailman.qth.net>>
> >> Subject: Re: [GreenKeys] ITTY to real Teletype
> >>
> >> Normally the ITTY service is fed to a piece of hardware
> called a terminal unit
> >> (think modem). The service is streaming as RTTY which is
> normally sent over
> >> amateur radio.
> >>
> >>
> >> Jeff
> >>
> >>>> On Oct 5, 2024, at 5:34 PM, David Wade
> <dave.g4ugm at gmail.com <mailto:dave.g4ugm at gmail.com>> wrote:
> >>>
> >>> I know there have been several USB to TTY boards produced,
> but what
> >> software would you use to drive one of these from itty?
> >>>
> >>> Dave
> >>>
> >>> G4UGM
> >>>
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> >>>>> https://teletype.net/gksearch <https://teletype.net/
> gksearch> 2002-to-present greenkeys archive:
> >>>>> http://mailman.qth.net/pipermail/greenkeys/ <http://
> mailman.qth.net/pipermail/greenkeys/>
> >>>>> 1998-to-2001 greenkeys archive:
> >>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> <http://mailman.qth.net/archive/greenkeys/greenkeys.html>
> >>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> >>>>> http://comcents.com/tty/greenkeyssearch.html <http://
> comcents.com/tty/greenkeyssearch.html>
> >>
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> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://
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> greenkeyssearch.html>
>
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>
> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch <https://teletype.net/
> gksearch>
>
> 2002-to-present greenkeys archive: http://
> mailman.qth.net/pipermail/greenkeys/ <http://
> mailman.qth.net/pipermail/greenkeys/>
>
> 1998-to-2001 greenkeys archive: http://mailman.qth.net/
> archive/greenkeys/greenkeys.html <http://
> mailman.qth.net/archive/greenkeys/greenkeys.html>
>
> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html <http://
> comcents.com/tty/greenkeyssearch.html>
>
>
> This list hosted by: http://www.qsl.net <http://www.qsl.net>
> Please help support this email list: http://www.qsl.net/donate.html
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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
> Please help support this email list: http://www.qsl.net/donate.html
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