The Breaking of German Naval Enigma
by Tony Sale
Codes and Ciphers
The Polish copy has a plug board at the back with ordinary telephone
When the Poles were involved only 6 letter pairs were being steckered. Later it increased to 10 which was the optimum number. But with only 6 steckers the machine behaved very nearly like an unsteckered Enigma, this made breaking much easier.
|single Grund on right hand side.|
|This page was originally created by the late Tony Sale, the original curator of the Bletchley Park Museum, and Secretary of the Bletchley Park Heritage Society.|