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Standard Telefon og Kabelfabrik

STK, or Standard Telefon og Kabelfabrik, was a telephone, electronics and cable company in Oslo (Norway). They are commonly referred to as Standard. STK was establised in 1915 and was later owned by ITT, then Alcatel and finally Thales.

 More about STK (history)
 More about Thales

STK cipher machines on this website
ATCRRM mixer machine used on the Washing-Moscow hotline
Key-tape puncher for creating random tapes
SELMA OKA-150, telegraphy cipher machine
TCE-160 mixer machine. Transistorized version of the ETCRRM.
Cryptel 240, telegraphy cipher machine
Cryptel 245, telegraphy cipher machine
TCE-300, bulk encryption system
TCE-500, secrure crypto telephone
RACE (KL-51)
Known STK cipher machines
Further information
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Crypto Museum. Last changed: Tuesday, 26 May 2015 - 12:21 CET.
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