[GreenKeys] Can you identify the equipment in this picture?

[Duncan M. Brown]

Clarification:  I don't know where the "200BA" designation came from.

The label says "Type UA 14 KEYBOARD PERFORATOR"


> [Original Message]
> From: Duncan M. Brown <duncanancy at earthlink.net>
> To: greenkeys <greenkeys at mailman.qth.net>
> Date: 22-Feb-10 10:51:58
> Subject: Re: [GreenKeys] Can you identify the equipment in this picture?
>
> The "Iron Horse" tape punch is generally known as the "GPE" (for "green
perforator", but all the ones I have seen have been black). The unit we
have at the AWA Museum has a label that says "200BA" on it.
>
> There is a better picture at the Office Museum site: 
http://www.officemuseum.com/IMagesWWW/1939_Sending_a_telegram_on_multiplex_m
achine_Can_NatTelegraph_Can_Sci__Tech_Museum_CN000701.jpg
>
> Note that the tape reader looks like the standard M14 type, but there is
no distributor (therefore it is not a "T-D").  The Multiplex System used
parallel, not serial data transmission, so the tape reader read all five
bits at once.  When serial data transmission became the standard, Teletype
Corp. added the big motor and "distributor" to do the parallel to serial
conversion.  Just as "teletype" became the generic term for any
teletypewriter, the term "transmitter-distributor" became the general
description for any tape reader, even ones without a distributor.  Even the
technical manuals for the military Kleinschmidt Labs machines (TT-76, etc)
refer to the tape reader as a "T-D".
>
> Have fun,
>
> Duncan
> K2OEQ
>
> >