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Piece
Theory of frequency modulation: asdic systems
Catalogue reference: ADM 259/226
What’s it about?
This record is about the Theory of frequency modulation: asdic systems dating from 1955 in the series Admiralty: Anti-Submarine Experimental Establishment, later Underwater Detection.... It is held at The National Archives, Kew.
Is it available online?
No, this record is not available online. However, you can order a copy. Other ways to view it.
Can I see it in person?
Yes, this record is held at The National Archives and is available to see in person. How to view it.
Full description and record details
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Reference (The unique identifier to the record described, used to order and refer to it)
- ADM 259/226
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Date (When the record was created)
- 1955
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Description (What the record is about)
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Theory of frequency modulation: asdic systems
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Held by (Who holds the record)
- The National Archives, Kew
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Former department reference (Former identifier given by the originating creator)
- Pamphlets 442
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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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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/C526041/
How to order it
- View this record page in our current catalogue
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- Select an option and follow instructions
Series information
ADM 259
Admiralty: Anti-Submarine Experimental Establishment, later Underwater Detection...
See the series level description for more information about this record.
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Theory of frequency modulation: asdic systems
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