Code name for U.S. Navy cryptanalysis station at Navy Department headquarters in Washington, D.C., from the late 1930s through World War II. The station was part of the OP-20-G staff (Navy Communications Intelligence). Negat was located in the temporary buildings on Constitution Avenue built during World War I. It was moved after the war to the Naval Security Station at Massachusetts and Nebraska Avenues in northwest Washington, the campus of what had been the Mount Vernon College for Women.
Negat was the phonetic word for the letter N in military communications at the time.
