[GreenKeys] Re: Siemens machines

Fri Sep 24 14:49:36 EDT 2004

Hi guys:

Thanks for the info Henning.   Is there a Siemens T100 manual around 
anywhere online?

TTY-Connect can easily provide 40-mA just by changing the power 
resistors.  So the M28 can plug into one HV loop (80VDC at 60-mA), and the 
T100 can plug into the second HV loop (80VDC at 40-mA).  They can talk to each 
other, or to a PC, or to a 232 TU.

Does your T100 have a governed motor Neil?  115 or 220VAC?  Have you 
powered it up at all?  I'd like to see your T100 get up and running.

Wish I could find a T100 around here for just a case of beer.

thanks,

gil

At 04:34 AM 9/24/2004, you wrote:
>hi gil, hi neil,
>
>the Siemens T100 is normally equipped with a single current 40-mA 
>high-voltage loop interface.
>It was produced in numerous versions, mainly 50 Bauds (66 WPM) and 75 
>Bauds (100 WPM) with an governed motor. The code was mainly CCIT-2 
>(Telex), but I have seen other versions also with a special kind of 
>computer 5-bit code and 100 Bauds. Don't know what Siemens exported to the 
>U.S. and/or Canada ...
>66 WPM (50 Bauds) machines are easily tuneable down to 60 WPM (45 Bauds)
>at the governed motor. Nearly all German hams did it that way, as 99,9 % 
>of any teletype machines here in Germany are equipped with governed motors.
>Here in Germany the Siemens T100 is the workhorse of teletypemachines and 
>you find it nearly everywhere. Often you can get it just for
>pick up or a case of beer :-) It is very reliable and nearly unbreakable...
>It is absolutely my favourite machine.
>It was used in big quantities in many European Telex networks unti the 80s.
>I think there should be no problem connecting it to Gil's nice board...
>
>best regards and goog luck in connecting your machine,
>
>Henning, DF3OE
>www.teleprinter.net
>
>
>---------- Original Message ----------------------------------
>From: gil smith <gil at vauxelectronics.com>
>Date: Thu, 23 Sep 2004 16:03:16 -0700
>
> >Hi Neil:
> >...
> >I don't know anything about the Siemens T100, other than the description on
> >Henning's site -- this indicates that it is a baudot machine, which may be
> >geared for  60- to 100-wpm.  I don't know what kind of electrical interface
> >was used, though I suspect current loop is likely.  Any comment
> >Henning?  Are there any online manuals for the T100?
> >
> >If the T100 is indeed a current-loop interface, it can connect to one of
> >the TTY-Connect loops.  If it has the same current/voltage loop
> >requirements as the M28, it can simply plug into the same loop.  If it is a
> >different speed (or needs low-voltage), the T100 can plug into one of the
> >other loops, and the units can still talk together.  Need some T100 info to
> >tell you more.
> >
> >Do you know for what speeds your machines are geared?
> >...
> >Some of the greenkeys folks are also setting up an rtty network called
> >HoffNet.  Though I am not a radio amateur, I have a radio for listening
> >when they get it running.  I have listened in for other rtty stuff (not
> >that there is all that much these days), just with the radio and MMTTY on a
> >pc.  But I also have a Dovetron TU, that I'd like to hook up to my M15 or
> >28 via TTY-Connect.
> >
> >gil
> >
> >
> >At 02:24 PM 9/23/2004, you wrote:
> >>Good Day Gil;
> >>
> >>I am located in Red Deer, Alberta, Canada.  I do not collect machines but
> >>have a Teletype model 28 (refurbished in excellent shape) and a Siemens
> >>model 100.  I am an amateur radio operator and acquired these machines for
> >>rtty on the Hf  bands.  I have been mostly dormant for the past 10 years
> >>but recently retired so am finding more time for Ham radio and such.  The
> >>reason I was looking on the net for tty information is that my model 28 is
> >>now hooked up to and HF radio and can receive messages.  I thought it
> >>would be nice to hook the 28 and Siemens together for a project and print
> >>from machine to machine. So I am in the process of looking for a simple
> >>circuit to do that.  I am pretty sure my 28's loop current is quiet a bit
> >>less than the Siemens.  I am still looking, I have books on the model 28
> >>but no printed info on the Siemens. Would your interface on your link
> >>work? I have some electronic technical background but limited knowledge of
> >>the tty machines.
> >>
> >>Thanks for your reply, I appreciate the response.
> >>
> >>Regards
> >>
> >>Neil Rowe (VA6AK)
> >>
> >>At 12:06 PM 2004-09-23 -0700, you wrote:
> >>>Hi Neil:
> >>>
> >>>Yes, my website is in need of much work.  For the Siemens machines, I
> >>>need to add a link to Henning's excellent site:
> >>>
> >>>http://www.teleprinter.net/txp/index2.html
> >>>
> >>>He has a great collection of links there as well.
> >>>
> >>>My site currently only has machines from Teletype Corp, plus some history
> >>>docs:
> >>>
> >>>http://www.vauxelectronics.com/gil/tty/
> >>>
> >>>I also have info on interfacing at:
> >>>
> >>>http://www.vauxelectronics.com/gil/tty-connect/
> >>>
> >>>Do you collect machines?  Where are you located?
> >>>
> >>>thanks,
> >>>
> >>>gil smith
> >>>
> >>>
> >>>At 02:53 PM 9/21/2004, you wrote:
> >>>>Hi
> >>>>
> >>>>I liked you site but some of your links under (machines) did not work. I
> >>>>was looking for a picture of Siemens tty machines.
> >>>>
> >>>>73
> >>>>
> >>>>Neil

;-------------------------------------------------------------------------
;  vaux electronics, inc.             480-354-5556
;  www.vauxelectronics.com    (fax: 480-354-5558)
;-------------------------------------------------------------------------