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Cryptography / Secure communication / SIGSALY / Secure voice / Homer Dudley / Secure telephone / Vocoder / Bell Labs / Pulse-code modulation / Technology / Telephony / Electronic engineering


Telephone Secrecy Melville Klein
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Document Date: 2013-02-17 12:34:48

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City

Manila / Berlin / Washington / Frankfurt / London / New York City / Oakland / /

Company

Off Premises Systems / Signal Service Company / AT&T / Bell Labs / Page 1 Bell Telephone Labs / Hertz / RCA / sideband HF / Bell Telephone Laboratories / /

Continent

America / Europe / /

Country

United States / Australia / United Kingdom / /

Currency

USD / /

Event

Patent Filing / Patent Issuance / /

Facility

Pentagon terminal / Institute of Technology / Tokyo terminal / SIGSALY terminal / /

IndustryTerm

communications security / voice energy / enciphered telephony / telephone circuits / telephony / confidenstrategic telephone secrecy / telephone lines / speech processor / telephone privacy time / telephone privacy / ordinary voice frequency telephone lines / gas thyratrons / telephone secrecy / telecommunications / secure telephone stitution / high-level telephone security / communications noise masking / radio media / itary communications / tion algorithms / historic telephone conversation / /

Movie

The Green Hornet / /

NaturalFeature

Tokyo Bay / /

Organization

Pentagon / Army Security Agency / Army Communication Service / National Security Agency / Signal Corps / U.S. government / British government / Pentagon’s Top Secret Command Center / Bell Lab / National Defense Research Committee / German Postal Authority / White House / Institute of Technology / Overseas Secure Telephone Service / Intelligence Service / Teletype Signal Corps / /

Person

Dorothy Madsen / Stoner / D. K. Gannett / Truman / Donald Mehl / Vannevar Bush / Heinrich Himmler / Alexander Graham Bell / Humelsine / Table Potter / Franklin Roosevelt / Winston Churchill / O. E. Buckley / James Harris Rodgers / David Kahn / Claude Shannon / Harry Nyquist / /

Position

Captain / Prime Minister / Director of Intelligence / President / speaker / time advocate / Lt. Col. / General / secretary / chief / first operaAssistant Chief Signal officer / author / Colonel / official / Chief Signal Officer / Major / possible folassistant chief signal officer / uncorrectable alternate representative / /

ProvinceOrState

California / Massachusetts / /

PublishedMedium

the National / /

Technology

frequency shift keying / 1 VERNAM Encryption / 2 Potter-Nyquist Modulo6 Encryption / Amplitude modulation / modulo6 encryption / encryption / System speech processor / on-line Teletype encryption / tion algorithms / /

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