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|a 327.1241
|2 23
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|a UAMI
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|a West, Nigel,
|e author.
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|a GCHQ :
|b the secret wireless war, 1900-1986 /
|c Nigel West.
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|a Barnsley, South Yorkshire, UK ;
|a Havertown, PA, USA :
|b Frontline Books,
|c 2019.
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|a 1 online resource (1 volume)
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|a text
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|a Includes bibliographical references and index.
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|a Signal intelligence is the most secret, and most misunderstood, weapon in the modern espionage arsenal. As a reliable source of information, it is unequalled, which is why Government Communications Headquarters, almost universally known as GCHQ, is several times larger than the two smaller, but more familiar, organisations, MI5 and MI6. Because of its extreme sensitivity, and the ease with which its methods can be compromised, GCHQ's activities remain cloaked in secrecy. In GCHQ: The Secret Wireless War 1900-1986, the renowned expert Nigel West traces GCHQ's origins back to the early days of wireless and gives a detailed account of its development since that time. From the moment that Marconi succeeded in transmitting a radio signal across the Channel, Britain has been engaged in a secret wireless war, first against the Kaiser, then Hitler and the Soviet Union. Following painstaking research, Nigel West is able to describe all GCHQ's disciplines, including direction-finding, interception and traffic analysis, and code-breaking. Also explained is the work of several lesser known units such as the wartime Special Wireless Groups and the top-secret Radio Security Service. Laced with some truly remarkable anecdotes, this edition of this important book will intrigue historians, intelligence professionals and general readers alike.
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|a Print version record.
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|a eBooks on EBSCOhost
|b EBSCO eBook Subscription Academic Collection - Worldwide
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|a Great Britain.
|b Government Communications Headquarters (1948- )
|x History.
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|a Great Britain.
|b Government Communications Headquarters
|2 fast
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|a Intelligence service
|z Great Britain
|x History
|y 20th century.
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|a Radio in espionage
|z Great Britain.
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|a Radio dans l'espionnage
|z Grande-Bretagne.
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|a Intelligence service
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|a Radio in espionage
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|a Great Britain
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|a 1900-1999
|2 fast
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|a History
|2 fast
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|i Print version:
|a WEST, NIGEL.
|t GCHQ.
|d [Place of publication not identified] : FRONTLINE BOOKS, 2019
|z 1526755785
|w (OCoLC)1104603723
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856 |
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|u https://ebsco.uam.elogim.com/login.aspx?direct=true&scope=site&db=nlebk&AN=2296091
|z Texto completo
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938 |
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