[GreenKeys] Teletype M12 KSR

[Don Robert House K9TTY]

MODEL 37 ASR Machines were used at all major Western Electric area offices.
Some were used in universities and were used for programming.
Those that were thought to go to regular commercial customers instead went
to the Soviet Union.  That was starting to happen when I went to TTY Corp
School on the M37.  The Union Pacific Railroad used quite a few of them
but later went to Model 40 equipment.

Some Model 37s were modified to send and receive selectively at 
5, 6, 7 or 8 level in ITA2 or ASCII for use at the Telephone Company Test Boards.
Also some 37s were set up for 5 level at 60 wpm for MARS operators.
Really odd to watch a 150 baud machine print at 60 wpm.  
Don
K9TTY


On 23 Jan 2015, at 12:05 AM, Dave Horsfall wrote:

> On Thu, 22 Jan 2015, Jim Haynes wrote:
> 
>>> Interestingly, the Model 37 came and went almost overnight as far as 
>>> it being used internally at Ma Bell.
>> 
>> And probably was used even less outside Ma Bell.  That was a fiasco. 
>> Teletype's last totally-mechanical product.  Similar technology was used 
>> in the "900" stock ticker which I would call successful but had a rather 
>> short service life because of other means of getting the stock market 
>> reports out.  Model 37 was very late getting to market.  I was told that 
>> a major reason for the lateness was the engineers' insistence in making 
>> a mechanical selector that could run at 150 baud.  A seriously hard 
>> problem that should never have been undertaken since electronics could 
>> do the job so easily.  And the keyboard was the same as the Model 38 
>> keyboard, based on the Model 32/33, terrible keyboard touch.  And it was 
>> competing against the IBM 2741 based on the Selectric typewriter with 
>> its superb keyboard touch.  And then was supplanted by the daisywheel 
>> printers, and finally by dot matrix printers that could produce 
>> typewriter quality print.
> 
> Wasn't it the 37 that was used heavily in the early days of Unix?
> 
> -- 
> Dave Horsfall DTM (VK2KFU)  "Bliss is a MacBook with a FreeBSD server."
> http://www.horsfall.org/spam.html (and check the home page whilst you're there)
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