[GreenKeys] Teletype Model 27?

[paul cembura]

 My records show a TT4/TG being a Kleinschmidt model 100.I have no idea why it is in a Teletype bulletin as a model 27.Paul mr_rtty

    On Wednesday, April 29, 2026 at 08:43:43 AM PDT, Nick England via GreenKeys <greenkeys at mailman.qth.net> wrote:  
 
 All I have is the 1946 Model 27 parts book, which does refer to it as
the TT-4/TG
https://www.navy-radio.com/manuals/tty/jh/ttyman8/TeletypeManuals/model27/1138B-Iss1.pdf

I presume that was just a typo for the "KSR-28" which is listed in all
the PDP-4 literature.

Nick England K4NYW
Chapel Hill NC
www.navy-radio.com


On Wed, Apr 29, 2026 at 11:14 AM Thalia Archibald via GreenKeys
<greenkeys at mailman.qth.net> wrote:
>
> A mention of a "KSR-27 teletype" caught my attention in these memos on the
> formation of the DEC Computer Museum in 1979. I'd never heard of this model and
> I'm surprised it's not one of the more typical models used with a computer. Does
> anyone know anything about the Model 27?
>
>    CONFIGURATION LIST
>
>    PDP-4 #1
>
>    1 central processor
>    8K memory
>    1 line printer (Analex)
>    2 card readers (Burroughs)
>    4 tape units (Potter - I think)
>    1 card punch interface (IBM)
>    1 Dectape control
>    2 555 Dectape transports
>    1 KSR-27 teletype
>    1 paper tape reader/punch
>
>    https://www.computerhistory.org/collections/catalog/102740424/
>
> This site on telegraph equipment says
>
>    Model 27 - referenced in museum book - says that is the model number for
>    TT-4/TG (XC-2) a proposed military machine with a typing unit like a Model
>    26 and a keyboard like a Model 31.  Says only 10 units were made.  Note that
>    the production TT-4/TG is a Kleinschmidt machine.
>
>    https://prc68.com/I/Telegraph.shtml
>
> Thalia
> ______________________________________________________________
> 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
>
> >>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
> >>> 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 nick at navy-radio.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

>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>> 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 rttyelectronics at yahoo.com  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20260430/adc87faa/attachment.html>