[GreenKeys] Model 40 Teletypes

[Don Robert House]

As far as I know the last customers to use Model 40 equipment up  
until year 2000 were:

Union Pacific Railroad
Canadian Armed Forces

An outfit called DATACAP in San Diego, California took over support  
after AT&T dropped all support.

There is still a vestige of Teletype Corporation in Singapore that is  
owned by at&t. One of 52 companies owned by the new at&t.

The last products known to me that were made by this outfit in  
Singapore were the terminals used to monitor central office battery  
plants.

Basically a dumb terminal with a dot-matrix printer... some  
installations left off the CRT unit and used the printer with a  
keyboard.

These were less expensive than the Model 43s.  I have forgotten all  
the model numbers but one was a 5310, another 5320 and also three- 
digit numbers like 471 and such...

They show up on eBay sometimes...  The advantage of these printers  
was their ability to print a large range of code in a large range of  
speeds.

Don
K9TTY