[GreenKeys] Introduction

[gil smith]

Hi again Richard:

That is quite a machine collection you have there!

I'd like to encourage you to NOT take machine discussions off-list, unless 
necessary.  This list exists solely to allow this information to get to 
others, and to be archived.  I think most folks would like to see 
discussions of any of your machines.

One of the important functions of greenkeys, that we sometimes forget, is 
that the discussions are archived.  Keeping relevant discussions on the 
list allows us to save tty machine information for the future.

I would especially like to see some discussion about the Creed and Siemens 
machines that most of us know little about.  And I've never heard of a 
Sagem.  Some pictures would be great!  Just note that you cannot attach 
pictures or other files to a greenkeys post.

By the way, since you are new to email, please note that if you simply 
REPLY to an email, it will only go to the original sender, even if 
greenkeys is copied in the CC field.  However, if you REPLY-TO-ALL, then 
greenkeys will also get a copy.  This has the effect of the originator 
getting two copies (the actual reply and the greenkeys post), but we all 
manage with that quite nicely, by deleting the extra copy.

thanks,

gil smith
greenkeys moderator guy


At 01:59 PM 10/8/2004, you wrote:
>Thanks to everyone who wrote to me on joining recently. Please note that
>(because of greenkeys) I now have E-Mail at home. My patient neighbour
>Grizzly should now be deleted from your files.
>
>Rather than bore everybody with my ramblings, I'll give a brief account of
>my machines, modifications and gadgets. If anybody wants more details or a
>chat, then feel free to contact me.
>
>All printers are page machines, and models used by the Australian Post
>Office unless indicated.
>
>Creed 7B                                        (3)
>Creed 8B (receive only                    (1)
>Teletype 15                               (1)
>Teletype 19 (tape perf)                   (1)
>Siemens M100 Mk I (much like T100)        (3)  One with double current
>(polar) relay box
>Sagem  T10 (Electronic) RX only           (1)
>Sagem  TX20   "                           (2)   Double Current
>Sagem TX 35 (2000) "                      (2)       "     "
>Sagem TX35E (2001) "                      (1)       "     "
>
>Teletype 28 Keyboard, on trolley          (1) Ex military, governed motor
>Kleinschmidt   TT-4A TG                   (1) Ex Australian Army
>
>Tape Transmitters/Readers
>
>Creed 6s/4                               (1)
>Teletype 15 (?19)                        (1)
>Teletype 28                              (1)
>Siemens twin head                        (1)
>
>Reperforators
>
>Teletype 14 Printing reperf no keybd     (1)
>Teletype 14 FRXD reperf transmitter      (1) On loan from Telstra Museum
>Sydney
>Siemens 15a        "       "             (1) Actually a 15f wired as a 15a
>
>Perforator
>
>Teletype keyboard tape perforator.       (1)
>
>Modifications. The TT 15 and TT19 only had remnants of the Figs Blank H
>motor stop apparatus. I added a relay and some contacts, and now machines
>respond to command and motor stops. It restarts on a line bump.(receipt of
>any character).
>
>Original parts were not available for adding the two-colour feature to M 100
>machines, so I devised a system which is comparatively simple to install,
>made up of bits and pieces already on hand, and this has proved to be rather
>reliable, and helpful with long phone 'chats' as this 'monitor' printer
>records the whole conversation in two colours, no matter what teleprinter in
>the collection I am typing from.
>
>A number of teleprinters have had character recognition added. Figs Z
>[+](end of message signal) operates a contact, creating a current flow. One
>particularly simple but reliable method has been devised. Both the Teletype
>14 FRXD and Siemens 15a have been connected to  relay boards so that their
>motor starts automatically on receipt of a line bump, and transmission of
>tape commences upon receiving Figs Z. Motor stops automatically about 10
>seconds after transmission ends, or if there is a pause of about 10 seconds
>when typing a message into these machines.
>
>Most teleprinters are wired into a small switchboard and can be connected
>back to back in pairs as desired, or can be connected to a modem for use
>over phone lines. Each machine can be used solo when not plugged back to
>back with another. A Creed and a Siemens are in a local loop to a
>neighbour's home.
>
>I have also built a character simulator which returns GA (go ahead) to line
>upon receipt of any character at the start of a transmission, and returns
>ROK (received OK) upon receipt of Figs Z Ltrs. This can be operated with the
>14 or 15a R/T, via the modem or with a back to back pair.
>
>Circuits are available for interfaces to connect single or double current
>teleprinters to either TTL or RS232 modems or computers.
>
>Additionally I set up working demonstrations of the Murray Multiplex at the
>Telstra Museums in Brisbane and Sydney.
>
>If anyone wants details of any of this, feel free to contact me. While I
>don't claim to be able to explain every teleprinter fault, there is a fair
>chance either I or Telstra Museum Brisbane members can offer advice.
>
>Regards,
>Richard Youl
>
>_______________________________________________
>GreenKeys mailing list
>GreenKeys at mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/greenkeys

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