Details

File containing the following papers written by R H Barker: 1. Group Synchronizing of binary digital systems reprinted from 'Communication Theory' 1953 2. SRDE Report No 1046 'The theory of pulse monitored servomechanisms and their use for prediction', November 1950 [2 copies, one annotated] 3. Group synchronising of binary digital systems, July 1952 [note that this is the original 'Barker Sequences'] 4. SRDE Technical Memorandum No RES 124 'The conversion of shaft position data to binary pulse code form', August 1949 5. Appendix II of SRDE Technical Memorandum No RES 124 'The production of accurate scales', August 1949 6. 'Electrets' reprint from the Journal of the IEE, September 1962 7. 'A Servo System for digital data transmission', reprint from the Proceedings of the IEE, January 1956 8. 'A transducer for digital data-transmission systems', reprint from the Proceedings from the IEE, January 1956 9. 'Automation in the electricity supply industry' June 1962, print out from the IET digital Library Vol 8 issue 90 p311-312. This print out is incomplete, the full article can be accessed via the IET Digital Library. [Digital copy available] 10. 'Ball-race motor' from Letters to the Editor. IEE Electronics & Power January 1965, Volume 11 issue 1 1965 p38. Accessed via the IET Digital Library. [digital copy available] 11. 'Addendum to The Pulse Transfer function and its application to sampling servo systems'. IEE Proceedings Part C Monographs Vol 102 issue 2 1955 p291-292. Accessed via the IET Digital Library. 12. 'Discussion on The Pulse Transfer Function and its application to sampling servo systems' IEE Proceedings Vol 101 issue 6, February 1954 p162-163. Accessed via the IET Digital Library. 13. 'Multiple reflections between two tuned receiving antennae' reprint from the Journal of the IEE Vol 83 No 501, September 1938. 14. R.B. Pullen Technical Report No 507 'A critical path network analyser' January 1964 15. 'A delay unit for analogue data' January 1962 16. 'Normal bandwidth speech secrecy' September 1955 [marked as secret, fragile] 17. 'A suggestion for narrow band speech secrecy [system] suitable for use over normal telephone networks' September 1955 [marked as secret, fragile, includes covering letter] 18. Correspondence regarding comments on the proposal made in the paper on 'A suggestion for narrow band speech security system suitable for use over normal telephone networks' October 1955 from the London Communications Security Agency [marked as secret] and from the Editor of the JIEE. [digital copy available]. 19. Addendum to IEE Monograph No 43 (July 1952) entitled 'The Pulse transfer function and its application to sampling servo-systems. The output between sampling instants'. [fragile] [digital copy available] 20. 'A method of transmitting telegraph signals as a three level code' May 1950 21. SRDE Research Division Technical Memorandum No. 113 "A tracking, display and data transmission system for the display of the general air situation." November 1948 [printed copy, original held at Malvern Radar and Technology History Society] [digital copy available]. These items were from folder number 2 in the original deposit.