[Milsurplus] Crypto for TTY 131B2 ?

[Nick England]

See the top of this page for info and links.
http://www.navy-radio.com/crypto.htm

Special TD is TT-21/FG or CSP-2699
The crypto method is exclusive-or of a key tape in the special TD and an
incoming online or offline stream. Known as PYTHON or SIGTOT.
TM 11-2222 covers the TT-21/FG

Nick




On Monday, June 27, 2016, Hubert Miller <kargo_cult at msn.com> wrote:

> Manual for the ‘Teletypewriter Set 131B2” says accompanying crypto
> equipment is “black metal box referred to as crypto unit”
>
> or a “SpTD unit”, Special Transmitter-Distributor, which units scramble or
> descramble the teletype characters passed thru them
>
> to the 131B2.
>
>
>
> What are the type numbers of these crypto equipments and has anyone seen
> the manuals for them? I’d like to know more about
>
> how they based their scrambling method.
>
> -Hue Miller
>


-- 
Nick England K4NYW
www.navy-radio.com
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