This is a picture of the Speech/Morse generator that was used by

the STASI and Russian intelligence.

Picture by Detlev Vreisleben

Video’s on YouTube by Peter Staal

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KG-84A/C encryption device, used by many military forces. It was developed to ensure secure transmission of digital data. The system is no longer produced.

The KG-84A and KG-84C operate in simplex, half-duplex, or full-duplex modes.