Cryptanalytic Equipment in operation

All photos from Record Group 457, box 804

Cryptanalytic equipment in use at Nebraska Avenue. Click to see larger image


Universal Plugboard

Operations Watch Office


Operations Watch Office



Mamba and more


Maintenance Watch Office


Cryptanalytic Equipment maintenance room



Main Deck, Nebraska Avenue


Sliding Grenade Attachment


Pluggable Series



Special Projects Shop


Loading wheels onto Duenna


Duenna in operation



Gypsy, Topaz

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  • Sources

    © Deborah Anderson. Use of materials by permission. This site has material from many sources including, among others, my writing and material from Dayton History. Both are use by permission. Before using, ASK. More specific information here.
  • INSIDE YOU’LL FIND …

    WHO worked during the war? Find the Personnel section. Also, Joseph R. Desch
    WHAT were their goals? By the Numbers. Also, The US Bombe
    WHY? History of the Bombe Project A contemporary account of the reasons and the plans for their project for the Director of Naval Communications, 1944.
    WHERE was the project: In Dayton, it was in Building 26. In Washington, it was housed at the Naval Communications Annex
  • Contemporary Code Breaking

    Cracking the code, from ABC News. How is code breaking used these days? What kind of mind do you need to have to be a code breaker? Or can computers do it all? Phillip Clark took a look.
  • Crypto Dictionary published

    Crypto Dictionary, book review at ZDNet: A useful AZ of cryptography definitions Crypto Dictionary covers standards, conferences, key websites, historical references and anecdotes ...