[GreenKeys] Baudot's machines

[Duncan Brown]

Thanks to Tom for the history lesson!

For extra credit, how where the multiplex distributors kept in 
synchronization? What was used for a frequency standard in the 1880s?

73
Duncan
K2OEQ

On 21-Nov-21 16:48, 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
>
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