[GreenKeys] do the length of stop bits affect clutch wear?

[Duncan Brown]

Some of the older, electromagnetical crypto gear (KL-7 ?, KL-47 ? and 
earlier) couldn't operate as fast as 60 wpm, so they had to slow the 
tape readers down to a speed  (40-50 wpm ?) that they could handle.
The electronic crypto gear, KW-7, KW-26 could handle 60 wpm and maybe 
higher.

Duncan

On 11/23/2018 14:17, Jim Haynes wrote:
> Prior to AUTODIN the crypto people for some reason found it necessary
> to control the rate of character emission from all the TTY sending
> devices.  In the Model 28 parts books you'll see sets of parts to adapt
> keyboards to "synchronous pulsed operation".  Sometime in the 1970s I
> bought 3 racks of equipment at a surplus sale.  Two of the racks held
> regenerative repeaters, and the other held what were called TD pulsers
> which simply generated pulses at the character rate to pulse the sending
> devices.  Beats me why those smart people in the crypto agency couldn't
> accomodate the natural output of keyboards and tape readers.
>


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