[GreenKeys] Teletype M14 - Marion, VA More Photos

Duncan Brown duncanancy at earthlink.net
Fri Apr 3 10:54:25 EDT 2015


On 03-Apr-15 09:24, Lester Veenstra wrote:
> Were the two channel mux systems async?
>
Yes.  It was a standard, 5 bit plus start & stop, TTY signal, but each 
data bit was cut in half to double the throughput. The system used 
special M14 TDs, with 10 data sectors (instead of five) for transmit. On 
receive, regular page printers were used and the range selector set 
lower or higher than normal to pick out the desired channel.

  See TM-11-2222 for details.

Have fun,

Duncan
K2OEQ



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