[GreenKeys] Model 19 on ITTY

[Al Klase]

Virgil,

Thanks for your input.  In my experience, these USB to serial dongles do 
not support 5-bit data.  I think the USARTS, in the early PC cards were 
based on the old Zilog design that could be set in almost any way by the 
drivers.  Software like Heavy Metal would work just fine on these 
dionsaurs, but not the new dongles.

Al

On 1/24/2020 10:40 AM, Virgil Bierschwale wrote:
> you can always add a rs232 board to the computer or use something like 
> this
>
> https://www.amazon.com/RS-232-Serial-Adapter-Windows-64bit/dp/B004WL7MIQ
>
>
> On Fri, Jan 24, 2020 at 9:38 AM Duncan Brown <duncanancy at earthlink.net 
> <mailto:duncanancy at earthlink.net>> wrote:
>
>     AL,
>
>     Are XR-2211 chips still available?  They make a very simple AFSK
>     decoder. It is a 14 pin DIP IC and with a few Rs & Cs will give
>     you an
>     AFSK decoder. (you don't need any limiter or selectivity coming off
>     ITTY) Then just add an optocoupler to interface with the TTY loop.
>
>     If you you manage to get MMTTY to  output to a serial port, don't
>     worry
>     about ASCII  conversion. MMTTY will output in 5-bit.
>
>     For a serial port, look for an old Win 7 or XP laptop.
>
>     Good luck,
>
>     Duncan
>     K2OEQ
>
>
>     On 1/24/2020 09:56, Al Klase wrote:
>     > Hi Ralph, /et al/
>     >
>     > The point is we don't have a TU.  We'll be running a PC anyway
>     if we
>     > monitor ITTY.  Logic level to current loop isn't a problem, and
>     I've
>     > found an Arduino "sketch" that will go from ASCII to baudot.
>     >
>     > I'm exploring RTTYT which looks like it will handle the PC
>     chore.  The
>     > scheme is complicated by the fact that modern PC's don't have
>     RS-232
>     > ports, and the UART's in the USB dongles don't support 5-bit
>     formats.
>     >
>     > 73,
>     > Al
>     >
>     > On 1/23/2020 5:00 PM, Ralph Mowery wrote:
>     >>
>     >> Doesn’t the audio come out of your computer speakers ?   If so you
>     >> could just run that audio into any modem/TU and then to the
>     machine.
>     >> I think that is what I did a year or so back.
>     >>
>     >> Ralph ku4pt
>     >>
>     >> *From:*greenkeys-bounces at mailman.qth.net
>     <mailto:greenkeys-bounces at mailman.qth.net>
>     >> [mailto:greenkeys-bounces at mailman.qth.net
>     <mailto:greenkeys-bounces at mailman.qth.net>] *On Behalf Of *Al Klase
>     >> *Sent:* Thursday, January 23, 2020 4:40 PM
>     >> *To:* greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>
>     >> *Subject:* [GreenKeys] Model 19 on ITTY
>     >>
>     >> Gang,
>     >>
>     >> We're still klutzing around with TTY's at the Radio Technology
>     >> Museum, and we're starting to make some progress. So, how do we
>     get
>     >> data from ITTY out to the machine?
>     >>
>     >> I have MMTTY copying the stream FB, but don't see the hooks to get
>     >> the data out.  Even 8-bit ASCII on a COM Port would be OK, as
>     we can
>     >> use TinyFSK on an Arduino to get to Baudot.
>     >>
>     >> I may just be dense. :-(
>     >>
>     >> Al
>     >>
>     >
>     > --
>     > Al Klase – N3FRQ
>     > Jersey City, NJ
>     > http://www.skywaves.ar88.net/
>     >
>     >
>     > ______________________________________________________________
>     > 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
>     <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 delivered to duncanancy at earthlink.net
>     <mailto:duncanancy at earthlink.net>
>
>     ______________________________________________________________
>     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
>     <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 delivered to vbiersch at gmail.com <mailto:vbiersch at gmail.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 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 delivered to ark at ar88.net

-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20200124/6ac03f01/attachment.html>