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3L Reports. 3L/SK Nos 1-8 Periodical index of keys (12/5/1943-20/10/1944); 3L/EF...

Catalogue reference: HW 63/6

What’s it about?

This record is about the 3L Reports. 3L/SK Nos 1-8 Periodical index of keys (12/5/1943-20/10/1944); 3L/EF... dating from 1942 Mar 11 - 1945 Apr 28 in the series Government Code and Cypher School: Wireless Telegraphy Coordinator Section: Records. It is held at The National Archives, Kew.

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Full description and record details

Reference

HW 63/6

Date

1942 Mar 11 - 1945 Apr 28

Description

3L Reports. 3L/SK Nos 1-8 Periodical index of keys (12/5/1943-20/10/1944); 3L/EF Nos 1-20 Emending in full of Enigma keys (20/10/1944-30/4/1945); 3L/EKN Nos 27-41 New 'E' [Enigma] Names (3/12/1944-30/4/1945); 3L/S Nos 3-5, 10, 18, 21-22, 28, 30-31, 36-37, 40-43 Miscellaneous notes for Hut 3 of wireless telegraphy and cryptographic interest (11/3/1942-22/12/1944); 3L/T Nos 14, 30, 40, 49-50, 54-55, 58, 67, 73, 75-82, 85, 87, 92-105, 107-109, 112-121, 124-125, 128, 130-131 Notes and instructions concerning emending and flow of traffic through Hut 3 (11/5/1943-28/4/1945). These series contain notes and instructions for the guidance of Hut 3 Army and Air Force intelligence reporters dealing with Enigma and other cypher systems

Held by
The National Archives, Kew
Legal status

Public Record(s)

Access conditions

Retained Until 2004

Closure status

Open Document, Open Description

Subjects
Topics
Radio and television
Intelligence
Communications
Record URL
https://beta.nationalarchives.gov.uk/catalogue/id/C11204063/

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Series information

HW 63

Government Code and Cypher School: Wireless Telegraphy Coordinator Section: Records

See the series level description for more information about this record.

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Catalogue hierarchy

Over 27 million records

This record is held at The National Archives, Kew

17,110 records

Within the department: HW

Records created or inherited by Government Communications Headquarters (GCHQ)

10 records

Within the series: HW 63

Government Code and Cypher School: Wireless Telegraphy Coordinator Section: Records

You are currently looking at the piece: HW 63/6

3L Reports. 3L/SK Nos 1-8 Periodical index of keys (12/5/1943-20/10/1944); 3L/EF...

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