[GreenKeys] Anyone interested in 100WPM?

[Duncan Brown]

On 1/21/2020 14:16, Mark J. Blair wrote:
> I have the impression that a 28 is a more robust rig for 100 WPM operation than my Kleinschmidt sets such as TT-4 and TT-98 page printers. Does anybody know if that's actually true?
The original  specification (c1944) for the TT-4 was just 60 wpm. But 
after a couple years of development by Kleinschmidt & Teletype Corp, The 
spec was changed to 60 and 100 wpm. Both Kleinschmidt & Teletype had to 
essentially start over to make their designs work at 100wpm.  (Teletype 
Corp had proposed a compact version of the M26, but then dropped out of 
the Signal Corps bidding to concentrate on the M28 for the US Navy.)

We had one TT-98 running at 100WPM on our primary circuit in Viet Nam 
for a few months with no problems.  But all the other KLI equipment we 
had ran at 60 wpm. Many adjustments for KLI machines were more critical 
at 100wpm than 60 wpm.

I have had the feeling that the M28 was  more at home at 100wpm than the 
KLI machines, but don't have anything to back it up with.  The KLI 
machines were made to be rugged and transported in jeeps & trucks than 
the M28, so maybe they held together just as well as the M28s at 
100wpm.  They both look like they are about to fly apart at that speed.

Duncan
K2OEQ
31J30