[GreenKeys] Baudot's machines

Harold Hallikainen harold at w6iwi.org
Sun Nov 21 17:30:31 EST 2021



On Sun, November 21, 2021 2:48 pm, Tom Hunter wrote:
> Jim,
>
> The Baudot system (1874) was inherently time division multiplex. He used
> four five-key keyboards. They were sequentially connected to the line by a
> distributor. A synchronised receiving distributor separated them and sent
> each to its own printer.
>
> In 1901 Donald Murry Developed the code we use today.
>
> The start-stop system was not invented until 1907 by C.L. Krumm and H.
> Krumm and eventually Teletype Corporation was born.
>
> Download navships 0967-255-0010 from Nick England's site. You will learn
> more than you ever wanted know about Teletypes. It is fascinating reading.
>
>
> Tom   N3CRK


Thanks! Have started reading the 200 page document at
https://www.navy-radio.com/manuals/tty/Principles_of_Telegraphy.pdf .

Harold



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