View source for STU-I

{{Short description|Secure telephone}}
{{About|a secure telephone|Stu as a common name|Stuart (disambiguation)}}
{{other uses|STU (disambiguation)}}
[[Image:STU-I.jpg|right|thumb|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 voice|secure telephone]] developed by the U.S. [[National Security Agency]] for use by senior U.S. government officials in the 1970s.<ref>{{Cite web |title=STU-I Secure Phone |url=https://www.cryptomuseum.com/crypto/usa/stu1/index.htm |access-date=2022-09-17 |website=www.cryptomuseum.com}}</ref>

[[Image:STU-I.Young.jpg|thumb|left|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 Treaty|Israel-Egypt peace talks]] in the [[Carter administration]].]]

[[Image:STU-I-cabinet.jpg|thumb|STU-I cabinet front door open.]]

==See also==
*[[KY-3]]
*[[Navajo I]]
*[[STU-II]]
*[[STU-III]]
*[[Secure Communications Interoperability Protocol|SCIP]]

==References==
{{Reflist}}

==External links==
*[https://www.cryptomuseum.com/crypto/usa/stu1/index.htm Crypto Museum - STU I]
*[https://web.archive.org/web/20060421083036/http://www.delusion.org/pix/trips/was-dc/200210/nsa_crypto_museum/ Delusion.org - National Cryptologic Museum pictures]

{{Cryptography navbox | machines}}
{{National Security Agency}}

[[Category:National Security Agency encryption devices]]
[[Category:Secure communication]]

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