[GreenKeys] IBM Radiotype

[John Nagle]

   Here's something I'd never heard of: the IBM Radiotype.

http://www-03.ibm.com/ibm/history/exhibits/specialprod1/specialprod1_3.html

   This was a RTTY-like system using IBM electric typewriters,
prototyped in 1931 and in small scale production by 1935.  It was
used through WWII between some Army installations.

   There were keyboard/printer units, tape punches, and
tape readers, so IBM had a whole system comparable to
Teletypes.  6 bit code, 600 chars/minute.

   IBM decided that they didn't want to compete with AT&T,
though, so the Radiotype was never offered commercially.

				John Nagle