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Mixer cipher machine - wanted item

The TCE-160 was an online/offline cipher machine for telegraphy signals (telex), developed by Standard Telefon og Kabelfabrik A/S (STK) in Norway in 1963. It is the transistorized version of the earlier valve-based ETCRRM (1955). The mechanical construction shows great resemblance to the SELMA OKA-150 OTT-machine of 1960. These types of machines are known as mixers.

The key tape reel is mounted at the rear left and fed through a paper tape reader at the front left. The image on the right shows a typical TCE-160 with a single Creed paper tape reader on its top surface. The image clearly shows that provisions are present for a second tape reader, allowing the machine to be used off-line.

For the generation of suitable random key-tapes, STK had developed the special KTP-3 key-tape production machine.

If you have any further information about this machine, please contact us.
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  1. Frode Weirud — Crypto Historian
    Personal correspondence, June 2012.

  2. Norwegian National Security Authority (NSM), Årsmelding 2008
    NSM Annual Report 2008 (Norwegian). Noen kryptosuksesser. p. 15.

  3. Leif Nilsen, NISnet Kick-off
    Thales Norway AS, PowerPoint presentation. 10 October 2007. Retrieved June 2012.
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Crypto Museum. Created: Saturday 16 June 2012. Last changed: Tuesday, 01 March 2022 - 16:52 CET.
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