[GreenKeys] Crypto question re: AN/UGM-11 TTY test generator

[Brooke Clarke]

Hi Nick:

My guess is that the different equipments have different interfaces, such as 
on-off loop, polar loop, audio tones, etc. in addition to using different 
numbers of bits per word and different parity bit(s).  Do you have a scope?


Have Fun,

Brooke Clarke
http://www.prc68.com

Nick England wrote:
> Haven't found a manual yet, but did get my $2 TTY test generator
> running last night. Fixed a power supply, traced out a bunch of the
> logic circuits, and replaced two dud chips. Hooked it up to my Model
> 28 and the Quick Brown Fox is now jumping merrily.
> (I'll clean up my circuit tracings some time and put them on a web
> page for anyone interested)
> 
> But besides QBF, this gadget also generates messages for a bunch of
> crypto machines - looks like garbage on the Model 28 but I don't have
> any idea what crypto test messages should look like - The AN/UGM-11
> (a.k.a. Wavetek 404) generates test sequences for KW-7, KW-37, KG-14,
> KG-84, and KW-46 equipments.
> 
> These are generated from much larger proms than the FOX prom so I
> guess that the messages are longer- but what the heck would they be?
> Any info or links to a crypto machine e-mail list would be greatly appreciated.
> 
> Huh, I wonder if the manuals are impossible to find because they were
> classified?
> FYI, photos of an AN/UGM-11  are at http://jproc.ca/crypto/ugm11.html
> cheers,
> Nick K4NYW
> www.navy-radio.com
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