[GreenKeys] Teletype over the Internet

Sun Jun 8 08:51:42 EDT 2008

This topic is really interesting. ITTY is a great tool and it's nice to have a signal that is always on for demonstrations. I would love to have an ethernet connection I can plug my TTY's into. It would be too cool to have a chat room environment for multiple people to communicate, a point to point communication scheme and a SELCAL feature for leaving messages on your buddy's TTY. At least those are the ones that come to mind immediately. Obviously you can do all those things over the air. But, many of our group are not Hams or may not have the time, money, or desire to do everything required to get a station put together. Once you get a transmitter, receiver, TU, antenna and all the interface wiring hooked up and working, you still have signal propagation to deal with. Then you have to look around 6 bands to find someone. Try finding someone to trade RTTY ART with on the air someday, it's not easy. 

I know just enough to be dangerous, but could you use Hamachi to create the network, then you need an application layer of software that handles all the "stuff" too get from an RS232 port to the ethernet. We already have TTY Connect that can get us from the serial port to our TTY. Does TTY Connect handle full duplex? Would you even need that?

Dave, WW8S
> ----- Original Message -----
> From: "Derek Cohn/WB0TUA" <vibroplex at mindspring.com>
> To: "Greenkeys ((E-mail))" <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] Teletype over the Internet
> Date: Mon, 2 Jun 2008 19:53:38 -0500
> 
> 
> Hi Dave,
> 
> This is a great idea.  I'm a member of the Morse Telegraph Club and we =
> do something very similar right now.  We do AFSK over the internet and =
> have a "loop interface" circuit that generates power to operate our =
> landline telegraph instruments from the serial port on a computer.  I =
> think this system would also work for teletype.  I have a vested =
> interest in this as our group, which does a landline Morse chat every =
> Saturday at the local Wabash RR depot would like to add teletype to our =
> display.
> 
> The inventor of this software is Les Kerr, N7RZ, and it's been in use =
> for several years now.  In the last week or so, just before your e-mail, =
> I asked Les what he would think about opening one or more TTY "channels" =
> on his server.  He was very enthusiastic about it and has already =
> established one.
> 
> I am not as technically minded as most people on the list but would like =
> to make this happen.  I also do not have a functioning teletype at the =
> moment (my Model 15 is acting very cranky).  Here is Les' web page where =
> the download for the software is located:
> 
> http://home.earthlink.net/~n7rz/morse/
> 
> Here is a link to the loop interface circuit that would be used to =
> generate power to operate the selector magnets.
> 
> http://home.earthlink.net/~n7rz/morse/techdocs/loopinterface.pdf
> 
> Les had some thoughts on a slight modification to his software that may =
> be required to make it compatible with tty.  Here is an e-mail he sent =
> me last week on the subject:
> 
> "The #14 wire is now reserved for TTY operation.  See the wire number =
> assignment list at =
> http://home.earthlink.net/~n7rz/morse/handbook.htm#wirenos .  You can go =
> ahead and test whenever you feel like (I know you said it would be =
> several months before you're ready) but there's a technical issue you =
> should be aware of.  The KOB program sends one code packet over the =
> internet for each Morse character.  The program looks for the space =
> between the characters, and that's how it decides when to send a packet. =
> For initial testing of the TTY wire through the KOB server, you'd =
> better leave a space between the characters you type on the Model 15's =
> keyboard, so the program knows when to send a packet.  Other than that, =
> I think the system can be used as is.
> 
> I'm toying with the idea of adding an experimental "TTY" mode to the KOB =
> program.  In addition to allowing full-speed sending by the teletype, it =
> would enable someone without a TTY unit to participate on the TTY wire =
> by typing on the KOB computer's keyboard and seeing the printed text in =
> the "code reader" window.
> 
> You're probably aware that Tom Curtola sends continuous broadcasts of =
> the news headlines and U.S. weather on KOB wires 101 to 104.  With =
> hardly any extra effort on his part, he could also send similar =
> broadcasts for TTY users (once the KOB program has the "TTY" option, of =
> course).
> 
> Don't worry about TTY users overloading the server.  If it ever gets =
> that heavily used, it'll be easy to set up a second server dedicated to =
> TTY use.
> 
> Just some thoughts...
> 
> 73,
> 
> --Les"
> 
> I have the parts to build the loop interface and I'm about 1/2 done (my =
> wife is out of town and I'm swamped with household stuff until she gets =
> back).  If you or anyone on the list would be interested in working with =
> me on this, I'd be happy for the assistance.  At a minimum, our local =
> group would be pounding out copy on Saturday's from the Wabash depot =
> here in St. Louis.
> 
> Once again, I think this would have very broad appeal and may be able to =
> be implemented with very little effort.
> 
> 73,
> 
> Derek Cohn
> Morse Telegraph Club - Alton Chapter
> Office UD, Sine DJ
> Amateur Radio Station - WBØTUA
> 1969 Brunswick M274A5 Mechanical Mule
> ----- Original Message ----- From: <NNN7DXB at aol.com>
> To: <greenKeys at mailman.qth.net>
> Sent: Sunday, June 01, 2008 6:01 PM
> Subject: [GreenKeys] Teletype over the Internet
> 
> 
> > All:
> >
> > Ideas and Thoughts:.....
> >
> > With the tremendous interest in teletype, teletypewriters, teletype
> > equipment, converters, and all of the equipment and technical
> > knowledge that seems to be so prevalent on this list, has anyone given
> > any thought to devising a way to get Teletype Traffic Over The
> > Internet working? I think there are enough folks with enough knowledge
> > who could get this going, if we can develop interest.
> >
> > I am aware that ITTY exists, but as we have seen, it has problems.
> >
> > We need more than one online Internet Teletype outlet......
> >
> > Perhaps its time for someone else to pick up the ball and run with it,
> > and maybe come up with a different application, such as a send/receive
> > system, or a 100 wpm RO, ASCII to Baudot converters, etc for use
> > online via the Internet wherein many folks can participate, provide
> > input, promote the hobby and enjoy the machinery and their operations.
> >
> > It is apparent that many folks are interested in keeping teletype machines
> > and traffic alive.....so, why not do it?
> >
> > Give it some thought, and perhaps it's worth talking about....
> >
> > Dave
> >
> >
> >
> >
> >
> > **************
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