Dayton Codebreakers
A story so important that it was secret for 50 years
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The Story in Brief
The Story In Depth
In The Documentary
Personnel
And more . . .
UDOLLI 2020
Electronics
In This Section
The 1939 Desch/Mumma Calculator
Cryptanalytic Equipment in operation
Specs for the Thyratron
Chassis of the Cryptanalytic Bombe
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Electronics
UDOLLI
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10 most FAQs
By the Numbers…
US Navy Cryptanalytic Bombe
Joseph R. Desch
Op-20-G
Naval Communications Annex, 3801 Nebraska Avenue
Turing in Dayton
The Accumulator
Notes & Sources
Webmaster Debbie Anderson