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As you may know, R.A.F. Henlow is due to close in 2026 (currently - it was 2020, so it's probably 2030!) and so we need somewhere to put the Museum. It would seem that most of the personnel are to move to Bassingbourne and there is nowhere to put the museum there.
Donations for the upkeep of these pages :
- Although downloads from this site are free, any contribution to the cost of the domain and equipment etc. would be much appreciated.
The Radar Displays:
- If you know nothing about Radar, try my introduction to radar page.
- A summary of my time in the R.A.F. working on Radar.
- A summary of the Radar Displays that we have at the R.A.F. Henlow Signals museum.
- A description of the refurbishment of the Console 61
- A description of the Console 64
- A description of the refurbishment of the Console 64
- A British Success - The Console Type 64 by Wing Commander John Brown OBE.
- A description of the Radar Emulator by Paul Edwards
Photographs:
- Radar Heads. Mainly early warning search radars.
- Some comments from John Dell on the Buchan photos.
- other Radar Equipment etc.
- Items at the Neatishead Radar Museum in 2007.
- Signals museum exhibits (a lot!).
Videos:
- A video I took during the open day at R.A.F. Staxton Wold in 1989 to celebrate the 25th Anniversary of the re-opening of the site. This shows the T84 (obsolete), T85 working (but sensibly stopped when the Red Arrows arrived), HF200, SSR tower, Microwave link tower, T91 (working) and the Red Arrows.
- Console 64 prototype software showing Video map, range rings and aircraft, with 96 Russian bears being intercepted by 12 Phantoms.
- Console 64 showing Phase 1A style of Height Finder Azication but with the height finder display on the Console 61.
- Console 61 'A' scan with white noise and (permanent) targets
- Console 61 in Height finder mode.
- Console 60 - showing video map, Russian bears being intercepted by Phantoms and back to back working with Type 14 and Type 15 radars.
De-classified Radar Air Publications etc in pdf format (all machine searchable).
You are welcome to download and use these documents for your own personal use, but not to upload them to another website etc.
(be aware that each file and most of the pages are identifiable.)If you want to view any of these, please download them first and then view them with Adobe Acrobat.
An alphetical list of the APs available on this site is available here.
(
= added in the past few months)
Radar Equipments
Rotor and Linesman Radar Equipments
- Console 61 (1969)(11.8MBytes)
- Console 60 (1965)(4.3MBytes)
- Console 64 (1961) (16.3MBytes)
- Photographic Display Unit (PDU) (1961)(32MBytes)
- Fixed Coil rack assemblies (1961)(17.9MBytes)
- Fixed Coil Training notes from R.A.F. Locking.(1.4MBytes)
- I.G. (Information Generator) rack. The descriptions start at page 356. (82MBytes)
- Video Map Type 30 (1969)(5.7MBytes)
- Video Map Type 30 Vol 2 (1972) Modifications (AP115N-0200-2, formerly AP2527R)
- No Break Trigger. (1968)(38MBytes)
- A later version of the No Break Trigger: Original document (1.5MBytes)and modernised version.(1.2MBytes)
- IFF Mk 10 Ground (1969)(49MBytes) (this has the circuit for the WFG 6010 missing and at least one page missing at the end.)
- Radar Type 7 (1960) (127MBytes)
- Radar Type 14 Mk 8 - Evalution for Airfield Surveilance Role.
- FPS6 (1967 - American document)(56MBytes) (this has several pages missing in section 1)
- FPS6 British Supplement (1969) (AP115D-0301-1, formerly AP2527U) (6.8MBytes)
- Radar Type 80 AP2527Q-Vol1 Pt2 (Testing)
- Radar Type 84:
- The Radar Head (sections 6 to10 - we don't have 1 to 5)(28MBytes)
- Signal Processing 1(44MBytes)
- Signal Processing 2(24MBytes)
- A Marconi document "Description of Signal Processing Facilities" dated 1961.
- The R.A.F. Locking Training notes - no illustrations. (2.5MBytes)
- The Block diagram of the Signal Processing (20/1/1960).(11.3MBytes)
- Radar Turning Gear Trainee Notes Circuit Diagrams (892kb)
- Turning Receiver SX115 Type 6331A, B & C (1963)(AP 116Q-0508-1)(5/3MBytes)
Other Ground Radar Equipments
- Shore Radars (1944)(21MBytes)
- AMES 21 Radar (1950)(25MBytes)
- Training Notes for CH (Chain Home) T3104 and R3106A
- Training Notes for CHL (Chain Home Low) from R.A.F. Locking (hand written).(15.8MBytes)
- More Training Notes for CHL (Chain Home Low) from R.A.F. Locking (hand written).(4.7MBytes)
- FGRI26008/1 & FGRI26008/2 (AR-1) (38MBytes)
- Plessey AR1 Radar - General Description and specifications.(5.4MBytes)
- Plessey AR5 Radar - General Description and specifications.(12.5MBytes)
- Plessey AR15M Radar - General Description and specifications. (4.9MBytes)
- Plessey 16-A2 Autonomous Displays - General Description and specifications. (3.0MBytes)
- Plessey Mk 5 Automous Display (AP115K-1201-1) 21MBytes
- Decca 5 Displays - Shortform Specification. (520k)
- Decca Mk V display (Diagrams) (AP115H-0607-10), as used on Radar AR1.
- Marconi S264 Radar - General Description and specifications.(1.0MBytes)
- Display Unit 5 (DU5) Consoles 15 and 16. Training notes from the early 1950s. (11MBytes)
- Precision Approach Radar FGRI 23323, Cossor CR62 (AP115E-0500-1)
- Radar Cover Diagrams for the AMES Types 1, 6, 7, 11, 14, 15, 27 and 50. (1950)(935kb)
- IFF Mk III working instructions This was used with the Radar AA mentioned below. (kindly submitted by Tony Wilson)
- Radar AA etc. information kindly donated by John Morgan (these were his father's books and were secret at the time of publication)
- Radar AA No. 1 Mk II (1944, Indian)(10MBytes)
- Radar AA No. 3 Mk V (1944: UK, 1946: Indian)(85MBytes)
- IFF Mk III (1944, Indian)(2.3MBytes)
- Miscellaneous: Signal Generator, Waveguides, Magnetron and Radar Trainer AA No. 1.(1944)(1.8MBytes)
- ACR7D (1968) (3.8MBytes)
- Radio Vehicle Type 529 Mk1 (AP116K-0134-1- wasAP2542AG vol 1)
- Cossor CRD 23 Radar Display Handbook
Airborne Radar Equipments
- H2S Mks 2, 3 & 4 description (AP1234E)(2.4MBytes)
- H2S and ASV (Air Radar) (1949)(2.6MBytes).
- Indicator Unit CRT28. The two indicator units used on ASV 19.
- ASV Mk II (Australian), kindly submitted by Tony Wilson.
- H2S Mk II and III (CD 0896L, later AP2890L) (1944)(18.5MBytes)
- ARI-5919 (Red Steer) - tail mounted radar for V-bombers.(AP114M-0200-1, was AP2891J)(1965)(32MBytes)
- IFF Mk III G.R. (Transceivers type R3120 & R3121 - airborne) Circuits, Installation, Setting up, parts etc.
- Marconi AD2300 Doppler Navigation Equipments (AP 114E-0400-1 was AP2890AC)
- Cossor Secondary Surveillance Radar 1600 Airborne (AP114J-0102-16)
Miscellaneous Articles relating to Radar:
- RADAR - a set of 11 war-time documents discovered by a Ferranti Contracts Manager in a second-hand bookshop in Arizona in 1984.(366Mb - huge!)
- Radar Circuit Principles (1946)(AP 1093F, Vol 1.)(17.9MBytes)
- The Famous EF50 Valve of WWII
- Magnetrons for Radar
- Radar Photographic Display System 1498
- Telecommunications Research Establishment (T.R.E.) Journals from January 1945 to April 1948 , dealing with H2S, Oboe and various other subjects.
- Radar Research Establishment Journals: Oct 1955, April 1956, October 1957, April 1958, October 1958, April 1959 and October 1960.
- See also "World Wars" for more Radar documents.
Links to other Radar web-sites:
- Bawdsey Radar
- Neatishead Radar Museum
- Marconi Radar History
- Ventnor Radar
- The Radar Pages
- The Association of RAF Fighter Control Officers website has a page dealing with radar and controlling the Lightning.
- Centre for The History of Defence Electronics
- The Purbeck Radar Museum Trust
- The Time Chamber:
Donations for the upkeep of these pages :
- Although downloads from this site are free, any contribution to the cost of the domain and equipment etc. would be much appreciated.
Non-Radar De-classified Air Publications etc. (all machine searchable)
You are welcome to download and use these documents for your own personal use, but not to upload them to another website etc.
(be aware that each file and most of the pages are identifiable.)
(An alphetical list of the APs available on this site is available here.
Due to this page becoming difficult to follow, I have moved the links to the following 11 groups to separate pages:
- Aerials and associated equipments.
- AP 1086 Vocabulary of Royal Air Force equipment
- Telephone, Teleprinter and Paper Tape etc.
- Radio Receivers, Transmitters and Transceivers
- Test Equipment
- Navigation Including GEE, Loran, Tacan, Navigator, Rebecca, etc.
- Power Supplies
- World War books and magazines etc.
- RAF Locking and RAF Cranwell magazines
- TV Cameras and associated equipments.
- An alpha-numeric list of the Air Publications (APs) on this site
Lists and Indexes:
- AP830 Scales of R.A.F. Equipment, Part A, Tool Kits. (21MBytes)
- AP1086 Vocabulary of Royal Air Force equipment (separate page).
- AP1095 Vol. I, Electical Equipment Manual General (Airborne)(1943)(AP 1095A)(63MBytes)
- AP1186 section 1 (from 1946) Generators, Motors, Regulators, Power Units, Test equipt, Engines.(127MBytes)
- AP1186 sections 2, 3 & 4 (from 1938) Transmitter-Receivers, Receivers, and Amplifiers (82MBytes)
- AP1186 sections 5, 6 & 7 (from 1938) Test and measuring equipt., W/T & R/T ancillary equipt., Visual Signalling apparatus.(92MBytes)
- AP3424 (part) - Ref. Nos. for Sections 10AD to 10V
- Index to Radio and Radar Air Publications. (1947)(AP 2463)(7.2MBytes)
- Index to Radio and Radar Air Publications. (1960)(AP 2463) (3.9MBytes)
- Radio Instrument list (cross reference of military ref. numbers and radio/radar equipment). (16.6MBytes)
- Listing of A.P.s relating to Radar, Radio and other electronics.From the late 1960s to the early 1990s.(AP 100Z-0101 part) (337 pages, 13Mbytes) 2023
- Listing of R.A.F. Signals Equipment Reference numbers.
- Services Manual of Preferred Valves (CV specifications) (1967) (32MBytes)
- The CV Register of Electronic Valves.(AP 1186V) (1963)(5.0Mb)
- Concise details of Ground Radio and Terminal Equipment (A.P.116A-0101-1) (53.5MBytes)
- Concise details of Electrical Engineering Test Equipment (Chapters 1-5) (AP 117A-0104-1A) (35Mbytes)
- The User's Guide to Wireless Equipment (Navy B.R. 222) over 650 pages, 74Mbytes).
- Army Equipments (1940s, 50s and 60s). Scan of photocopy of photocopy!
- The R.A.F. Stores Vocabulary.(6MBytes).
- Electrical Communication Systems Equipment TM11-487(American War Department 1944, over 500 pages) (53.1MBytes).
- Electrical Communication Systems Equipment TM11-486(American War Department 1945, over 500 pages) (102.5MBytes).
- Graphic Survey of Radio & Radar Equipment used by the American Army Air Force in WWII.
- The MOD's Guide to Connectors in 3 books: Book 1, Book 2 and Book 3. (scans of photocopies).
Miscellaneous equipments
- Aircraft Intercom Amplifier A1134 (A.P. 2876B)(1.4MBytes)
- Akai M9 Tape Recorder User Manual.
- Amplifier A.1961 (AP 116N-0105-1)(11.3MBytes)
- Marconi Automatic Direction Finder AD.7092 (8.0MBytes)
- Marconi-Franklin Valve master oscillator. Maintenance instructions.
- Bomb Sight computor XIV (AP 1730A) (10.8MBytes)
- Tandberg Tape Recorder series 15 (1973)(AP116L-0131-1) (2.7MBytes)
- Avro 504N (1928) (AP1273) (400kBytes)
- Vulcan B Mk 2 Aircraft servicing manual, wireless and radar etc (1966) (AP 2505B or AP 101B-1902-1C)(17.9MBytes)
- Wire Recorder 50A and 51 (General Electric) (1945) (2.8MBytes)
- Oscillator Type 37 Circuit Diagram only
- GEE: (moved to Navigation)
- Automatic Keying Devices, Type 1, 1A, 1B, and 1C, for VHF Beacons (AP 2885N. Vol 1).
- Undulator (High speed morse recorder) Marconi UG6A (AP 116M-0802-16, was part of AP 2980A)(3.9MBytes).
- Petter Diesel Diesel Engine PD3 (1975) (AP119C-0605-13A6) (3.6MBytes)
- Battery Charging and Maintenance (AP 120C-000101) (3.4MBytes)
- Reforming Unit, Electrolytic Capacitor Vol 1, part 1967 (AP117L-05001-1 was part of AP2536C)
- JetStar Flight Simulator (this document is not quite complete - see page 2)
- Antenna Tuning Unit Racal Type MA 144 (AP116E-1719-1)
- Radio Altimeter AN/APN-1, AN/APN-1A, AN/APN-1B, AN/APN-1X.
- Radio Altimeter (Radio Set) SCR718
- RF Cables, UR ,URM, & RG Technical Information (AP113D-1701-1)
- RS232 Terminals:
- Hazeltine Esprit User manual
- Hazeltine Esprit Maintenance manual
- Lear Siegler ADM 3A/3A+ Dumb terminal Video Display Unit
- for RS232 printers, see my Texas Instruments page
- Teletalk System AD2779 (AP116N-0201-15)
- Instument Landing System (ILS) Airborne (ARI 18011) (AP 116B-0408-1 & AP2534E)
- ILS checking Mast (Trailer Mounted)
- FSK-AM-Converters, K-156-B, Operating & Maintenance
- CADF, FU3unit (Short description, Photos and circuits)
- Circuit diagrams of RAF equipment from the 1940s, beautifully drawn by an RAF Apprentice.
- Wireless Circuits and connections . Valve circuits with descriptions for the amateur.
- Clark Telescopic Masts Catalogue (1970).
Radar and Radio Training notes and other Miscellaneous items.
- AP 3302 - Standard Tech. Training notes for Radio Engineering Trade Group
- Part 1A - Electrical and Radio Fundamentals. (1965)
- Book 1 - Sections 1-7 (5.8MBytes)
- Book 2 - Sections 8-12 (6.4MBytes)
- Book 3 - Sections 13-20 (6.4MBytes)
- Part 2 (Communications) (4.2MBytes)
- Part 3 (Radar) (14.1MBytes)
- The Services Textbook of Radio Vol. 7, Radiolocation Techniques AP3214 Vol 7.
- Standard Notes for Wireless Mechanics (1944) (AP 1938)(8.9MBytes)
- Standard Notes for Wireless Operators (1942) (AP 1970)(4.8MBytes)
- Standard Notes For Air Signallers (1953) (AP3188) (5.5Mbytes)
- Electrical and Radio Notes for Wireless Operators (AP1762)
- Notes on Air Operating for Signals Air Crew (1944)
- Telephonists' Training notes from R.A,F. Cosford
- Radar Circuit Principles (1946)(AP 1093F, Vol 1.)(17.9MBytes)
- Radar Theory and Operation (13.8Mbytes)
- Royal Air Force Signal Manual, AP1093 Volume 1 Part 2 (1948)(48MBytes)
- RAF Shortwave Communication Handbook AP2514 (1943) (4.4MBytes)
- The R.A.F. Locking Training notes
- Fixed Coil Radar Display systems.(1.4MBytes)
- Radar Type 7
- Radar Types 13, 14, 54 etc.
- Radar Type 84 - no illustrations. (2.5MBytes)
- Glidepath Marker Beacons
- AN/FPS6 Height Finder
- Transmitter 15149 (HL13) and Receiver 15150 Part 1
- Transmitter 15149 (HL13) and Receiver 15150 Part 2
- British Tacan
- British Tacan additional diagrams.
- Display Unit 5 (DU5) Consoles 15 and 16. Training notes from the early 1950s. (11MBytes)
- Standard Technical Training Notes, Trade Practices and Servicing Procedures. AP3373 (1967) (42MBytes)
- Standard Technical Training Notes, Trade Practices and Servicing Procedures. AP3373 (1986) (120MBytes)
- R.A.F.V.R. Signal Manual AP1713 (1939) (2.7Mbytes)
- Electrical Notes. All sorts of stuff in here, from Carbon Pile Regulators to Field of Fire for Gun Turrets.
- Cossor 787 Radar Training Notes
- Time Domain Reflectometry - Basic princples and examples.
- Wireless Transmission by F.J. Camm
- Model Answers - Radio and Line Transmission (City and Guilds 1972)
An alphetical list of the APs available on this site is available here.Aircraft, Missiles, ATC, ROC, Post Office Journals and other miscellaneous items.
(
- My Photographs of Aircraft and Missiles at RAF Cosford, and Aircraft, Vehicles and Guns at IWM Duxford.
- Books and magazines loaned to me for scanning by Alf Fisher:
- The Wireless World Radio Valve data book from 1958 (6th edition).(11.5MBytes)
- The Mullard Valve & Service reference manual from 1949 (1st edition). (2.5MBytes)
- Newnes Electrical Engineering Magazines - I would recommend that you download these to view with Adobe Acrobat as the bookmarks are enabled for quick links to each subject.
- Newnes Practical Electrical Engineering (1932)(346Mb - huge!)(several parts missing). This later became "The Practical Electrical Engineer":-
- The Practical Electrical Engineer Volume 1 (1932-3)(129MBytes).
- The Practical Electrical Engineer Volume 2 (1933-4)(96MBytes).(part 20 missing).
- Royal Observer Corps:
- Royal Observer Corps Training Syllabus(809kb)
- Royal Observer Corps Training Manual (21MBytes)
- 75 Papers of the Institution of Post Office Electrical Engineers (with subject index).
- Journals of the Institution of Post Office Electrical Engineers(Volumes 30-55, 1937-67)
- Post Office Engineering Instructions for Relays, polarised type 2B, 3B & 4B, and Teleprinters Nos. 3A, 4A and 5A.
- Radiation Safety 1966 (AP4687A) Vol 2.
- The 'Q' Code (AP1529) 1942
- Combined Operating Signals - American - 'Q' codes.
- Communications Procedures for the Civil Aeronautical Service (AP3153A) 1947
- The Air Force Code (AP1927)
- Control and Reporting 2 (AP3401) (38 Mbytes)
- Flying (AP3456D) (105 Mbytes)
- R.A.F.V.R. Signal Manual (AP1713)
- A Map from 1943 of the North Midlands and Lincolnshire, showing (in red) the R.A.F. Stations.
- Electronic Data Flow Diagrams (mainly Green Satin and Orange Putter) (9 Mbytes)
- Report of the Defence Lands Committee 1971-1973.
- Marconi Centenaries (1999)
- Marconi Review Supplement to 103
- Squadrons of the RAF.
Miscellaneous links to other electronics that I've had dealings with:
- My adventures in Teletext. (with Texas Instruments and Europe Technologies - my other career).
- Balzers High Vacuum coating systems - circuits etc. for EHV110A rack.
- ASR35 Teletype - believed to be the full documentation.
- A circuit diagram (schematic) of the Amplifier, Portable PA Mk III. (43kb)
- CB radio circuit diagrams both redrawn (with notes) and scans.
- Texas Instruments Documents, including Semiconductor Circuit Design books, Silent 700 printer manuals, TM990 manuals, and TI99/4 and TI99/4a Home computer.
Some non-electronic links:
- How to run Borland 5.02 C++ IDE under Windows 7, (maybe 8) and 10, 32 or 64 bit.
- If you're bored, see also my Blunham pages and Genuki pages and if you're really, really bored you might try " "Blue balls" or "Blue balls 2" (try following one of the balls!).
Donations for the upkeep of these pages :
- Although downloads from this site are free, any contribution to the cost of the domain and equipment etc. would be much appreciated.
If you have any comments, complaints, suggestions, requests etc, please drop me a line via my Genuki email page.
If you want to know when the page changes, try a change tracker such as PageCrawl.io