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• Catalogue level

  Piece

  Y Service nomenclature

  Y Service nomenclature

  Held by

  The National Archives, Kew

  Date

  1943 Feb 01 - 1945 Jun 06

  Reference

  HW 41/392

• Catalogue level

  Piece

  Technical reports concerned with radio fingerprinting, radio direction finding, aerials...

  Technical reports concerned with radio fingerprinting, radio direction finding, aerials and recording enemy emissions

  Held by

  The National Archives, Kew

  Date

  1942 Oct 01-1945 Apr 30

  Reference

  HW 41/130

• Catalogue level

  Piece

  A short history of the naval branch of the organisation , called the "Y" service,...

  A short history of the naval branch of the organisation , called the "Y" service, which was set up to intercept enemy communications

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01-1945 Aug 31

  Reference

  HW 41/137

• Catalogue level

  Piece

  Romanian Air Reports

  Romanian Air Reports

  Held by

  The National Archives, Kew

  Date

  1944 Aug 09-1944 Oct 26

  Reference

  HW 41/145

• Catalogue level

  Piece

  Weekly reports describing German army and air force wireless telegraphy in Europe

  Weekly reports describing German army and air force wireless telegraphy in Europe

  Held by

  The National Archives, Kew

  Date

  1945 Jan 19-1945 Apr 27

  Reference

  HW 41/147

• Catalogue level

  Piece

  Signal intelligence reports produced by the allied land forces, South East Asia

  Signal intelligence reports produced by the allied land forces, South East Asia

  Held by

  The National Archives, Kew

  Date

  1945 Jan 01-1945 Oct 30

  Reference

  HW 41/150

• Catalogue level

  Piece

  Wireless intelligence report on communications in Saudi Arabia, East and North Africa

  Wireless intelligence report on communications in Saudi Arabia, East and North Africa

  Held by

  The National Archives, Kew

  Date

  1937 Feb 01-1937 Feb 28

  Reference

  HW 41/198

• Catalogue level

  Piece

  Monthly wireless intelligence reports on communications in North and East Affica...

  Monthly wireless intelligence reports on communications in North and East Affica and Saudi Arabia

  Held by

  The National Archives, Kew

  Date

  1937 Jan 01-1937 Jan 31

  Reference

  HW 41/195

• Catalogue level

  Piece

  Wireless activity report

  Wireless activity report

  Held by

  The National Archives, Kew

  Date

  1938 Jan 01-1938 Mar 31

  Reference

  HW 41/194

• Catalogue level

  Piece

  Middle East military signal intelligence reports

  Middle East military signal intelligence reports

  Held by

  The National Archives, Kew

  Date

  1942 May 01-1944 Jun 30

  Reference

  HW 41/151

• Catalogue level

  Piece

  Wireless activity report

  Wireless activity report

  Held by

  The National Archives, Kew

  Date

  1937 Apr 01-1937 Jun 30

  Reference

  HW 41/192

• Catalogue level

  Piece

  Reports concerning the results of air attacks on German convoys based on interception...

  Reports concerning the results of air attacks on German convoys based on interception of German communications

  Held by

  The National Archives, Kew

  Date

  1941 Aug 29-1941 Oct 17

  Reference

  HW 41/26

• Catalogue level

  Piece

  Signals relating to the allied Sigint organisation

  Signals relating to the allied Sigint organisation

  Held by

  The National Archives, Kew

  Date

  1944 May 10-1944 Sep 22

  Reference

  HW 41/79

• Catalogue level

  Piece

  Periodical summaries describing German and other enemy air forces communications...

  Periodical summaries describing German and other enemy air forces communications including equipment and organisation

  Held by

  The National Archives, Kew

  Date

  1942 Feb 01-1943 Apr 30

  Reference

  HW 41/128

• Catalogue level

  Piece

  Summaries issued by the Mediterranean allied air force of enemy air activity

  Summaries issued by the Mediterranean allied air force of enemy air activity

  Held by

  The National Archives, Kew

  Date

  1944 Jul 02-1945 May 06

  Reference

  HW 41/86

• Catalogue level

  Piece

  German and Italian air activity in the Mediterranean and North Africa

  German and Italian air activity in the Mediterranean and North Africa

  Held by

  The National Archives, Kew

  Date

  1941 Oct 01-1941 Oct 31

  Reference

  HW 41/5

• Catalogue level

  Piece

  Intelligence report on Libya

  Intelligence report on Libya

  Held by

  The National Archives, Kew

  Date

  1939 Jul 01-1939 Jul 31

  Reference

  HW 41/112

• Catalogue level

  Piece

  Reports teleprinted from Malta to the Air Ministry and passed to the Government Code...

  Reports teleprinted from Malta to the Air Ministry and passed to the Government Code and Cypher school giving details of enemy air activity and the results of British air operations

  Held by

  The National Archives, Kew

  Date

  1942 Jan 01-1942 Jun 30

  Reference

  HW 41/45

• Catalogue level

  Piece

  Signals from the British naval base at Alexandria concerned with enemy communications

  Signals from the British naval base at Alexandria concerned with enemy communications

  Held by

  The National Archives, Kew

  Date

  1943 Jul 07-1943 Dec 07

  Reference

  HW 41/70

• Catalogue level

  Piece

  Signals containing results of interrogations by counter intelligence officers of...

  Signals containing results of interrogations by counter intelligence officers of suspected enemy collaborateurs and agents

  Held by

  The National Archives, Kew

  Date

  1944 Dec 22-1945 Mar 01

  Reference

  HW 41/73