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STK
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-logo. Copyright Crypto Museum

 
Cipher machines
ATCRRM mixer machine used on the Washing-Moscow hotline ETCRRM Key-tape puncher for creating random tapes KTP-3 SELMA OKA-150, telegraphy cipher machine SELMA TCE-160 mixer machine. Transistorized version of the ETCRRM. TCE-160 Cryptel 240, telegraphy cipher machine CT 240 Cryptel 245, telegraphy cipher machine CT 245 TCE-300, bulk encryption system TCE-300 TCE-500, secrure crypto telephone TCE-500
RACE (KL-51) RACE

 
Known STK cipher machines
Further information

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