[GreenKeys] ITTY to real Teletype

Wed Oct 9 18:11:45 EDT 2024

Hello Hugh,

When you refer to “lame” do you mean compiling this: https://lame.sourceforge.io/download.php?

Thanks

Rob 

From: Hugh Pyle <hughpyle at gmail.com> 
Sent: 07 October 2024 20:06
To: Jeffrey Golas <jeffg at junknet.net>
Cc: rob at jarratt.me.uk; Mailing List Green Keys <GreenKeys at mailman.qth.net>
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 | 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 | 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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>>>>> 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:
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>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

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