STU-I

Secure telephone

STU-I secure telephone desk set. Electronics were housed in a separate cabinet.

The STU-I, like its successors sometimes known as a "stew phone", was a secure telephone developed by the U.S. National Security Agency for use by senior U.S. government officials in the 1970s.^[1]

STU-I cabinet with desk set on top. The person talking is U.N. Ambassador Andrew Young, calling from New York City during the Israel-Egypt peace talks in the Carter administration.

STU-I cabinet front door open.

See also

KY-3
Navajo I
STU-II
STU-III
SCIP

References

^ "STU-I Secure Phone". www.cryptomuseum.com. Retrieved 2022-09-17.

External links

Crypto Museum - STU I
Delusion.org - National Cryptologic Museum pictures

v t e Cipher machines
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Teleprinter	5-UCO BID 770 DUDEK KW-26 KW-37 Lorenz SZ 40/42 Siemens and Halske T52 SIGTOT
Secure voice	BID 150 FASCINATOR KY-3 KY-58 KY-68 NESTOR OMNI SCIP Sectéra Secure Module SIGSALY STE STU-II STU-III VINSON
Other	JADE KG-84 KL-43 KL-51 Noreen Red Purple Pinwheel Rockex
In Computer Hardware	AES instruction set Intel SHA extensions IBM 4758 IBM 4764

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v t e National Security Agency
Locations	Alaska Mission Operations Center Colorado Cryptologic Center Consolidated Intelligence Center CSSG Dorsey Road European Cryptologic Center European Technical Center Fort Meade Friendship Annex Georgia Cryptologic Center Hawaii Cryptologic Center Interagency Training Center Kent Island Misawa Security Operations Center Multiprogram Research Facility Pine Gap RAF Menwith Hill Roaring Creek Room 641A Salt Creek Sugar Grove Texas Cryptologic Center Utah Data Center Pacific Technical Center
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Divisions	CSS Information Warfare Support Center ROC Special Collection Service SSO TAO NTOC NSOC
Technology	ANT catalog FROSTBURG HARVEST Secure Terminal Equipment (STE) STU-I STU-II STU-III WARRIOR PRIDE
Controversy	Global surveillance disclosures (2013–present) Church Committee Edward Snowden LOVEINT James Bamford NSA warrantless surveillance controversy Pike Committee Russ Tice Thomas Andrews Drake Thomas Tamm Matthew Aid
Programs	Boundless Informant Dropmire ECHELON Fairview Insider Threat Program MUSCULAR MYSTIC PRISM Real Time Regional Gateway Stellar Wind TRAILBLAZER Turbulence Upstream XKeyscore Epic Shelter
Databases	DISHFIRE Interquake Main Core MAINWAY MARINA Nymrod PINWALE
Other	Dundee Society Institute for Defense Analyses National Cryptologic Museum National Cryptologic School National Vigilance Park NSA Hall of Honor VENONA Vulnerabilities Equities Process Zendian Problem

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