AVA Radio Company

Reconstruction of the appearance of the Cyclometer on the basis of sketches from the memories of Marian Rejewski

The AVA Radio Company (Polish: Wytwórnia Radiotechniczna AVA) was a Polish electronics firm founded in 1929 in Warsaw, Poland. AVA designed and built radio equipment for the Polish General Staff's Cipher Bureau, which was responsible for the radio communications of the General Staff's Oddział II (Section II, the General Staff's intelligence section).[1]

After the Cipher Bureau's mathematician-cryptologist Marian Rejewski in late December 1932 deduced the wiring in the German military Enigma rotor cipher machine, AVA built Enigma "doubles" as well as all the electro-mechanical equipment designed at the Cipher Bureau to expedite decryption of Enigma ciphers.[2]

  1. ^ Kozaczuk 1984, p. 27.
  2. ^ Kozaczuk 1984, pp. 26–28 and passim.