[GreenKeys] Teleprinter demo project

[Alf Fisher]

I designed and built a microprocessor based unit a few years ago that did 
exactly what Ken described below.
It plugs into AC power and connects to a teleprinter magnet and has magnet 
driver and power supply built in.

Alf Fisher

www.rafsignalsmuseum.org.uk



----- Original Message ----- 
From: "Ken Schwieker" <ksweek at mindspring.com>
To: <greenkeys at mailman.qth.net>
Sent: Sunday, June 08, 2008 4:34 PM
Subject: [GreenKeys] Teleprinter demo project


>
> I think that there is a need for a small stand alone device that will
> store in memory multiple teletype messages and would output one or a
> string to a teleprinter when prompted to do so via the push of a
> switch. For several reasons I don't want to use a laptop, a paper
> tape reader, etc or any external data lines. Just connect the device
> to AC and the teleprinter and it would be ready to go. A small
> microprocessor or a pic device on a small circuit board would seem to
> be ideal if capabilities were sufficient including enough memory to
> hold quite a few messages.
>
> Our museum here has an AP model 15 machine just begging to come back
> to life. The museum personnel are non technical so operation will
> need to be pretty basic. It would need to be a connect and forget
> type of system other than the occasional paper or ribbon  change and
> have very low maintenance requirements.  I think it would be nice if
> a visitor could push a "demo" push button that would start up the
> teleprinter, print out at least one complete AP/UPI type message and
> then turn off the machine. Most any vintage messages would be
> appropriate but any pertaining to significant events would probably
> generate more interest. Also a short history of teleprinters or a
> message pertaining to the museum could be printed out.
>
> Idea would be to expose as many people as possible to teleprinter
> operation as I am sure many have never seen one of these machines
> running. I will be building and donating this to our local museum so
> a reasonable cost is somewhat of a consideration. If this gets off
> the ground maybe other greenkeyers would want to introduce the demo
> project into their local museum or other demonstration possibilities.
>
> A question I have is if there is some unit already available that
> could be used as is in this project with the addition a power supply, etc.
>
> Anyway, I am hoping that some of you out there that are more
> knowledgeable about the design of this type of device would have some
> ideas on this or for that matter could/would assist in the design and
> programming of one or even produce a kit as a project available to the 
> group.
>
> Ken S
>
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