[GreenKeys] Interesting cipher machine.

[Duncan Brown]

Michael,

The TT-30/AGA-1 (aka Teletype Corp. Model 31) just prints on a tape, 
which makes it much smaller than a page printer. Although originally 
designed for the military (AN/AGA-1 was for an airborne RTTY system), I 
don't think they sold many to the military.

Teletype Corp later came out with a version with a synchronous motor and 
a carrying case and sold them to Western Union, who leased them out to 
sports newsmen.  They took them to games and typed out the game, play by 
play.

Teletype corp only built about 500 of the M31 units and that probably 
includes ones used in SIGNIN/AFSAM-4s.

have fun,

Duncan
K2OEQ


On 10-Feb-22 20:36, Michael Katzmann wrote:
> Actually on a second look, the tape looks too small and there is a 
> printing ribbon. It probably just prints.
> Michael
>
>
> On Thu, Feb 10, 2022 at 8:14 PM Michael Katzmann <vk2bea at gmail.com> wrote:
>
>     Does the device generate 5 bit punched tape? It's a bit hard to
>     tell from the video. The keyboard appears to have the baudot
>     character set so I presume it does.
>
>
>
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