Focus on
Olga Gray and the Woolwich Arsenal Spy Ring
In 1938, thanks to years of work by a remarkable female agent, MI5 ensured a package of British defence plans stayed secret.
Piece
Noise Interception and RCM [radio countermeasures]. Notes on the problems of intercepting...
Catalogue reference: HW 50/54
What’s it about?
This record is about the Noise Interception and RCM [radio countermeasures]. Notes on the problems of intercepting... dating from 1939 Sep 01 - 1945 Apr 18 in the series Government Code and Cypher School and Government Communications Headquarters: Records.... It is held at The National Archives, Kew.
Is it available online?
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Full description and record details
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Reference (The unique identifier to the record described, used to order and refer to it)
- HW 50/54
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Date (When the record was created)
- 1939 Sep 01 - 1945 Apr 18
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Description (What the record is about)
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Noise Interception and RCM [radio countermeasures]. Notes on the problems of intercepting enemy non-morse transmissions and on the formation of the NIB [Noise Investigation Bureau]
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Held by (Who holds the record)
- The National Archives, Kew
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Legal status (A note as to whether the record being described is a Public Record or not)
- Public Record(s)
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Access conditions (Information on conditions that restrict or affect access to the record)
- Retained Until 2004
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Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
- Open Document, Open Description
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Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C11205576/
How to order it
- View this record page in our current catalogue
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- Select an option and follow instructions
Series information
HW 50
Government Code and Cypher School and Government Communications Headquarters: Records...
See the series level description for more information about this record.
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Noise Interception and RCM [radio countermeasures]. Notes on the problems of intercepting...
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