Following the success of earlier editions of Secret Communications, the last of which was in 2023, Crypto Museum and the Foundation for German Communications (CDV&T) have teamed up again. We are very pleased to announce our new exhibition: Secret Communications 5, to be held in the main building of CDV&T in Duivendrecht (near Amsterdam, Netherlands).
Secret Communications 5 will be open to everyone on the following days:
| Day | Date | Time | Admission |
|---|---|---|---|
| Sunday | 1 November 2026 | 10:00-17:00 | Free |
| Saturday | 14 November 2026 | 10:00-17:00 | Free |
| Sunday | 15 November 2026 | 10:00-17:00 | Free |
| Sunday | 29 November 2026 | 10:00-17:00 | Free |
| Saturday | 12 December 2026 | 10:00-17:00 | Free |
| Sunday | 13 December 2026 | 10:00-17:00 | Free |
| Sunday | 27 December 2026 | 10:00-17:00 | Free |
On these days, we will be open from 10:00 to 17:00 and admission is free. Furthermore, coffee, tea and sandwiches will be available free of charge. We will be showing an exciting collection of cipher machines and espionage gear, some of which has never been on public display before. Of course the radio and radar instruments of CDV&T can be visited too.
Check out what we have selected for you , or click any of the buttons below to find out more.
Please see the page Friday Projects III for an update
www.cdvandt.org/FridayProjectsIII (update June 2026) 
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Last update: Sunday June 22 2025 with a new Friday update
About the Foundation
A
- About Navigating on this website 6 (consideration, about us) Status: 1/1/2015
- About the objectives of our Foundation (About us) Agenda of the Foundation (Diary)
- Abshagen Karl-Heinz ↓ KV 2/388..390: 1+2+3+4+5+6+7 !! 5/7'24!!←!
- Abshagen Karl Heinz-2 ↑ KV 2/390-3 .. 8 ↓about his brother↓ 2/3'22!!
- Abshagen von Wolfgang KV 2/526 ! 2!+3!+4!+5! 23/4'24!!
- Abwehrfunk-Funkabwehr, Rudolf Staritz's re-issued manuscript of 1985 25/6/'18!
- Abwehr-2 Bilder aus dem Bereich des Geheimen Funkmeldedienstes.. Rudolf Staritz!
- Abwehr-3 Heeresneubauamt Stahnsdorf Status: 13/4'20
- Abwehr data, collected in a historical succession Status: 5/7'19
- Abwurf-Zielfernrohr-Goerz-Boykow André Masson CH 24/7'23!!
- A.D.I (K) report transcripts (a selection), known as 'Felkin reports' Status 29/2/2020!!
- Advances and disadvances of frequency and Phase modulation ... (BIOS Misc. 83)
- AEG-Kleinzange zum Schweißen und Löten AEG Mitteilungen 9/12 1943
- AEG product leaflets 1930s (Handbooks papers and product information)
- Agenda (diary) of our Foundation, incl. personal reflections! Status: 27/1/2024!!
- AGFA Colour (BIOS 397)
- Agfa Film Factory Wolfen, CIOS Rep. No. XXX-15 (CIOS)
- Airborne command transmitter (transponder?) module (unidentified type number)
- Aircraft Works of Koninklijke Maatschappij "De Schelde" (CIOS IX-5-6-7-XI-22)
- Akustische Strahlungsleistung von Kreis- und Kugelgruppen(Sonar), F.A. Fischer(ENT)
- Allied post-war reports on German Science and Industry (FIAT-CIOS-BIOS)(selection)
- Annalen der Physik (1897 - 1905) all indexes & selection of papers, Planck, Einstein,..
- Analogcomputer als Medium der Zeitmanipulation, by Teresa Busjahn (Handbooks)
- Anniversary 10 Years “Fernseh A.G. 1929 - 1939”, Germany (TV tech 1930 - 1945)
- Antennen, Ausgewählte Fragen über Theorie & Technik 23-26 March 1943, GBN-ZWB
- Antennen, Ausgewählte Fragen Teil 2, 24 - 26 March 1943 Part 2 GBN-ZWB 2 !!
- APS 15A (R-78/APS-15A) survey, ≈ the wartime Meddo Gerät technique!! Status:16/12/'14
- Arbeitsgemeinschaft Rotterdam (AGR), minutes of meeting 1943/44 (History of radar)
- Arbeitskreistagung Röhren (valves & magnetron - conference) Breslau 27/28 March 1944
- Archive displays, radar, communications, measurments, transmitter, computer→!!
- Archives PP, concerning German military and commercial apparatus
- Artefacts, on display ( selection of exhibits) , and a selection of Archive displays !!
- Arthur Owens, alias SNOW 1935 - 1941..+6+7+ 8a+8b+8c!+8d ↓ 6/8'21 !!
- Arthur Owens page 3; 8e+9a+9b+9c+ 9d 7/9'21 !!
- Arthur Owens page 4: 10a +10b +10c!!! 30/9'21 !!
- Artist - Johannes Jebsen a forensic Survey:XVII+XVIII+XIX+XX 2/7'20!!
- Askania - Bordgeräte Sonderdruck Flugzeugtypenbuch 1937/38
- Aspects of German Airborne Radar Technology 1942-1945 (airborne radar history)
- Aspects of German radar calibration (Würzburg - Mainz - Mannheim and Berlin)
- Aspects of German Work on High Temperature Materials (BIOS 272)
- Aspects of precision measurements (in Dutch language)
- AS 60 repair. Finding out what caused the R line-phase breakdown?
- Athos, a German passive radar apparatus for U-boats, operating on 9 and 3 cm
- Ausdehnungs-Thermometer, History of Expansion Thermometer 1600 - 1848 (ATM)
- Auswanderungsmesser WW I, Germ. & Swiss FLAK, André Masson ! (CH) 31/10 2017
- Auxiliary radar (test) instruments (radar-gear)
- ATM, Archiv für Technisches Messen, papers on scientific measuring techniques
- Ayesha and SMS Emden The escape of the landing squad from Direction Island 1914!
B
- Barkhausen-Kurz, retarding field (B-K)valve theory, H.G. Möller (ENT vairous)
- Ballistische (Ballistic) Galvanometer, Flux, Kriechgalvanometer (ATM Various)
- Bändchen mikrophon (Ribbon type microphone) Siemens & Halske (ENT various)
- Bandung area, Tjimindi & Tjililin transmitter sites + Rantja-Ekek receiving station
- Bandung Radio Laboratory and the inauguration of a monument at Kootwijk 1939
- Battery service manual: Die Sammler. Maintenance on behalf of GAF (L.Dv.706)
- Bayerische Motor Werke (BMW) (CIOS XXVI-83)
- BCD counters, developed in Germany between 1940 - 1945 (BCD counters)
- Beck (Horst) selection of pictures of his beautiful collection on radar, gyros, rockets etc.
- Bedeutung der Frequenz- und Zeitmessung in der Schweizer Luftwaffe (Handbooks)
- Berlin radar considerations FuG224, Berlin A, FuMO81 (Exhibits details, very down that page!!)
- Berlin FuG 224 = FuMO81 radar, circuit discription handbook 1944/45 >Exhibits details !!
- Berlin FuG 224 radar, manual and AGR details 1944 (Manuals)(Handbooks)
- Berlin Feld II 'Ersatz', completing our endeavour Status 21/12'16
- Berlin FuG 224 radar Survey, integrating new modules N2 + P Status: 14/11/'16
- Berlin FuG 224: U 224 Umformer: 28 V dc→80 V ac B+C Status: 25/6'18
- Bildkatalog Funk - Kriegsmarine, Luftwaffe and Wehrmacht updates 23/2/2025
- Bildtelegraphie, Lorenz-Korn system, 2 contributions, 50 years C. Lorenz anniversary
- Blauschrift-Röhre type LB50, paper on The Skiatron or Dark Trace Tube (Handbooks)
- BOA12 - MEK8 and MG15, carrier telephone systems, brief description by Helmut Schicke
- Bolometer-Amplifier, (ATM various)
- Bombenrechner SAAB BT-9 für Hawker Hunter (Schweiz) By André Masson 8/6'20!
- Boot & Randall's famous cavity magnetron patents of 1941, US2542966, US2648028
- Bouw Radio Zendstation Malabar, building the station Radio Malabar 5 Status: 3/7/'14
- Braun's (Ferdinand) very significant patent on a 'whisker cristal detector' (1906)
- Breite Quarzregelfilter paper by W. Kautter (Telefunken Zeitung 77, November 1937)
- Breslau Störsender, Breslau moonshine like jammer Status: 9 December 2013
- British HF/DF operator recollections, during wartime convoy escorts (Huff Duff)
- Broadcast stations permitted (authorized) by the Germans 1941 (Abhörverbot!)
- Brown (patent) Microphone Amplifier, (≈1900-1920)(Archive displays)(exhibits)
- Bruneval Report, T.R.E.(TRE) 6/R/25, on the Britsih raid of 28 February 1942(transcipt)
- Busignies' HF/DF system concept used by the Germans known as: R.C. 5 B
C
- Calit & Calan, Hescho brochure on ceramics, state of the art of 1932/33 (Handbooks)
- Cambridge A.C. Instruments for High Frequencies, Catalogue 162 of 1925/27
- Canaris, message decrypts where in his name had been used 1940-44 KV 3/3 21/8'18
- Carbonyl Nickel & Carbonyl Iron Powders, their Production & Properties (BIOS 1575)
- Carl Bosch Laboratory of Berlin (AEG) (infra-red Bildwanler), (CIOS File No. XXX-35)
- Carl Zeiss Stiftung, transcript of some interesting pages of CIOS report XXXIII-51
- Carré Mathilde Lucie @ Victoire French espionage & double cross KV2/926-936 2+3+4 4/2'21!!
- Carré - Lucas - Brutus (Walenty) & Kiki German/\French double cross 2+3+4a+5+6 24/2'21!!
- Carré-Bleicher-Walenty & Draht I + 2 + 3-4 + 5 + 6 + 7 + 8 19/4'21 !!
- CAVMAG 2010, International Conference on 70 Years of the Cavity Magnetron
- CAVMAG 2010, The Power and the Glory, intriguing story, by Phil Judkins
- CFQ Quartz-clock, designed by Rohde and Leonardt of Rohde & Schwarz (CFQ)
- Chapman - Zigzag Safecracker Double-Cross agent 4 + 5 + 6 + 7 3/6'21!!
- C.H.F. Müller A.G. Bahrenfeld, Hamburg (BIOS Final Rep. 201)
- Clausewitz's comments on: the successfulness of the (former) enemy (Huff-Duff)
- Coaxial Cable & Associated Telephone & Television Systems (FIAT 286)
- Commenorance for all WW II and WW I civil and military victims 4/8'19
- Components display, since 14 June 2011 Status: 5 February 2012
- Concealed Oil Targets in the Brilon-Bredelar Area (BIOS-39)
- Conducting properties of aluminium at high frequencies (FTM 1936)
- Cryptographic patents, selection of some quite early patent applications
- Curious (small) archive displays (>curious archive displays<)
- Cyclotron Investigation Heidelberg (Prof. Bothe) (CIOS XXIX-47)
D
- Dajeukolot (Dayeuh Kolot)(Dajeuh Kolot) radio station ≈ 1938 and 1989
- Dajeuh Kolot wireless station, integral reproduction of a photo album 29/5/'14
- Das neue Patentgesetz, paper on new German patent-legislation of 1936(Handbooks)
- DASD-CQ, German radio amateur (Funkamateur) magazine of 1937, call-sign list!add!
- DASD-CQ, some of 1939/41 and 1944. Proving that >86 'D' HAMs got war-license!!
- DASD CQ 1943-44, Mai 1943 bis September 1944 + November 1944 18/11'16
- DASD-Rufzeichenliste Status 25 August 1941 German wartime HAM call-sign list
- Deckname Wuerzburg (Würzburg) FuSE 62/65 newly scanned 24/12'22!!
- Der Weg zur Normfrequenz 50 Hz, by Gerhard Neidhöfer, Bulletin SEV/AES, 17/2008
- Description of Junkers 004 (203) Jet Propulsion Engines (CIOS XI-6-XII-9 and XIV-4)
- Design of German Telephone Subscribers' Apparatus (BIOS 606)
- Design of Radar Test Equipment Siemens Halske Plant Munich (CIOS XXVII-46)
- Deutsche Versuchsanstalt f. Luftfahrt (DVL) Institut f. Betriebstoff Forschung (BIOS 119)
- Deutschlands Rohstoffversorgung, Rede von Walther Rathenau am 20. Dezember 1915
- Development and Production of Electrical Components, Especially of Relays (BIOS 393)
- Development of Ceramic Materials for use in Turbine Engines (CIOS XXV-9)
- Development (German) of Modulator Valves for Radar Application (BIOS 1746)
- Dick Zijlmans in Memoriam, in commemorance of a special Person! II 30/11'24!!
- Die Einheitsröhrenserie, article on the standardisation of valve(tube) base size (FTM)
- Dielectric wires and waveguides (FTM 1938)
- Dienstreise Nord I. Report on a trip 26-31/12/'44, Karlshagen to V2 launching site the Hague
- Diesselhorst Thermokräftefreies Kompensationsapparat 1906-1908 (Zs.f.Instrumk.)
- Dietze Roderick Eduard Anton KV 2/428 +2!+3!+4! 12/5'24!!
- Dijkstra's interesting recollections on: Radio-Malabar and his time in Dutch-Indies
- Dijkstra's (Klaas) price winning photo-album of 1939, unique photos! Status 13/5/2013
- Dimensioning of Directional Antennas By Dr. Kurt Fränz, Telefunken (FIAT 610)
- Dioganes Bunker alignment data of MEK8 and BOA-12 of Bell Telephone Antwerp
- Diversity reception, Gerät zur Auswahl des lauteren Übertragungsweges (ENT 1932)
- DK-Classification (Dewey system), Über das Ordnen technischen Schrifttums (ENT)
- DMG5k Michael restoration project 2+3+4+5!+6!+7!+8!+9!+10! 5/5'24!!
- DMG5K Michael restoration project +11!+12!+13!+14!+15!+16! 14/6'24!!
- DMG5K Michael resoration project 17!+ 18!+19! 29/8'24!!
- DMG5K demo setup-Klooster rear room 20+21+22+23! 28/9'24!!
- Donnerkeil Unternehmung, Operation Cerberus, Channel Dash 12/2/1942(Handbooks)
- Doppler patent US1981884, by Taylor, Young and Hyland of 13 June 1933 (Handbook)
- Dornier Structural Strength Test Equipment and Methods (BIOS 66)
- Drueke-Vera von Wedel-Waelti KV 2/1701-1706 Part V VI VII VIIIa, IX extra 24/2'20!
- Düsseldorf/Aachen talk ‘06, on Hülsmeyer and his early radar commitments, PDF-ppt
- Dutch Indies PTT, reproduction of photo albums recently donated to the archives 28/6/'14
- Dutch Report on German Manufacture of scales on metal, glass and celluloid (BIOS misc 101)
- Dutch Report on Transmitting Tube Targets in Germany (BIOS Miscellaneous 102)
- Dynamit A.G. Plant at Trosidorf (CIOS-XXIV-3)
- Dynamit A.G. Troisdorf (CIOS XX-3)
E
- Ebbe Peedersen's, photos of German communication equipment about 1950
- ekm- und hm-Rechner II am Fu.M.G.39TD (Flak), analogue computer to Wurzburg radar
- EGON, a German wartime secundairy radar system, up to optical range
- Electrical and Technical Ceramic Industry of Germany (FIAT 617)
- Electro - Accoustics in Germany Part 1 & 2, (BIOS 980)
- Electron Microscopy in Germany (BIOS 1671)
- Electronic Principles as Applied in Germany to the Testing of Materials (BIOS 724)
- Electronic Valve (Tube) Factories Helmbrechts and Minden (CIOS XXIV-26-27)
- Elefant/See-Elefant radar transmitter, which came into being late December 1943!!
- Elektrometerröhren, electrometer valve(tube) technology, (ATM various)
- Elektronenstrahl-Oszillograph (CRT-scope) literature list up to 1939 (ATM various)
- Elektronenstrahl-Oszillograph, aspects of the history of CRT oscilloscopes (ATM various)
- Electronic Test Instruments Spark & Flash Discharge Photographic Equip. Philips (CIOS XII-22)
- Elektrolytischen Trog, die Aufnahme von Potentialbildern, electrolytic bath (FTM)
- Elster DMG2T, UHF telephone communication set (curious archive displays)
- Emden the story of the famous raiding cruiser, 1914, by Prince Frans Joseph von Hohenzollern
- Enigma, aspects of wireless communications during the Battle of the Atlantic
- Enigma, Naval type M4 for u-boats >1941 (U-Boot Schlüssel M4)(Archive displays)
- Enigma manual M Dv Nr 32/1, Marine Druckschriftverwaltung Nr 32/1 (Handbooks)
- Enigma, selection of basic patents & docs on the names of Koch, Scherbius and Korn !!
- Enigma, schreibende Chiffriermaschine von Arthur Scherbius 1923 (Handbooks)
- E.N.T. Elektrische Nachrichten-Technik, paper selection (in progress) (ENT various)
- Erich von Salzmann Chapters 1+2 +3+4+5 all Combi 4/1'22!!
- Erich Vermehren about his disgusting case, 2+3+4+5+6a 19/11'21!!
- Ernst Lecher Institute, research report on radar ECCM technology 1945 (Handbooks)
- Ernst Sachs' letter to Heinrich Himmler of 31 July 1944, on the use of radio amateurs
- Erzeugung und Verstärkung von Dezimeter- und Zentimeterwellen H.E. Hollmann (TFT)
- ES111, Die Ablenkstufe des Fernseh-Gemeinschaftsempfängers E1 (Telefunken-Röhre)
- Etablissment ORA-Grandin M. CHAUCHAT, Metox (CIOS I-2)
- Europe Missed the Transistor, IEEE paper, (Weblinks)
- European Electron Induction Accelerators US Naval Technical Mission (BIOS-Misc-77)
- Exhibits Registration (radar- communication- audio recorder- measurement- apparatus) 3/1/'15
- Exhibits details new page 1! Status: 11 October 2022
- Exhibits special dedicated on to components Access being renewed !!
- Exhibits details new, extended page 2 Status: 22 October 2017
- Exhibits-details new, extended page 3 Status: 12 January 2014
- Exhibits-details new, extended page 4 Status: 12 January 2014 !!
- Exhibits-details new, modified page 5 D (KZ 14 ...) Status: 10/7/ 2013
- Exhibits-details new, extended page 6 c Status: 12/4/2014
- Exhibits-details new, extended page 7 KWE a Status: 31/3/2014
- Exhibits-details new, extended page 8, about the Li-SN2 coaxial connector Status: 8/6/'14
- Exhibits-details new, extended page 9, on Numans Status: 19/6/'14
- Exhibits-details new, extended page 10 some old 'spot dB-meters' Status 3/10/'14
- Exhibits-details 11a Gemse Status: 16 October 2014
- Exhibits-details 11b FuPeil-E3 Status: 18 October 2014
- Exhibits-details 11c PQK 10 & FNR 16 & SK17 (VK17) Status: 18 October 2014
- Exhibits-details 11d SK 3 (S 10 K 3) Status: 16 October 2014
- Exhibits-details 11e E10K3 Status: 16 October 2014
- Exhibits-details 11f Schwabenland Ln 21021 Status: 18 October 2014
- Exhibits-details 14 Abstimmeinsatz a (Abst. a) 2b Status: 13/10/2016 Extended 4
- Exhibits-details 15 Empfängerprüfer für Torn Fu bf and b1 A Status: 14/12/'15
- Exhibits-details-17 The Gema OB-Einsatz Freya/Seetakt Lichtzeiger projekt 2, 14/9/'15
- Exhibits-details- 17a Gema OB 110 cursor projection operates again! 2 19/10/2016
- Exhibits-details 18 TU 50 (TU50) Fernseh UHF triode to the 'Tonne TV TX' 7/9/'15
- Exhibits-details 18a DH 7 The Fernseh AG UHF modulator valve 13/5/'16
- Exhibits-details 19 'Lokomotiv' transmitter module to Würzburg 62 and 65 16/11/'15
- Exhibits-details- 20 Fahrzeugrahmen Mounting rack for tank sets Status: 30/12/'15
- Exhibits-details- 20a The new, more transparent display of our Fu 5 Status: 10/6'17
- Exhibits-details- 21 Lo6K39 and Lo6L39 mounting provision 16/9/'16
- Exhibits-details 22 Überlagerer 62, the unique Wurzburg LO module Status 3/10'16
- Exhibits-details 23 E 102a, coarse altitute radar/receiver-display 2 Status: 21/11'16
- Exhibits-details 24 Luminous quartz phenomenon demonstrations Status: 17/5'17
- Exhibits-details 25 Displaying a Lo6K39 RX open at turning table Status: 18/10'17
- Exhibits-details 26, I guess, two 1944/45 IF KM radar strips (new) 21/11'17
- Exhibits-detailes NS 4, discoveries on late Graham Wimbolt's device +B 17/2'18
- Exhibts-details a most rare SD spy set (1941-43) C+D Status:15/3/2018
- Exhibits-details_29, German wartime IR image convertor Status: 26/5'18
- Exhibits-details 30, BZA1, Ju 88 analogue bombing computer B Status 21/12'18!
- Exhibits-details 31: FG 1250? Infra-Red apparatus, a Survey A + B 18/5'21!
- Exhibits-details 32, our FG1250 IR apparatus starts working 1+2+3 11/2'19!
- Exhibits-details 33, GK III German wartime voice inverter 3 + 4 14/9'20!
- Exhibits-details-33b, GK IIIb sets are now operating correctly Test 2, Test 3 16/9'19
- Exhibits-details-33c, GK IIIb scrambler on Secret Comms 3 display 2 25/10'19
- Exhibits-details 33d, Spectrum screen shots scramble vs unscramble 4/11'19
- Exhibits-details 34, DLL 22T the transmitter valve of the SE 109/3 spy set 13/5'19
- Exh-details 35: GK IIIb scrambler communicating through Tfb2 16/3'20
- Exhibits-details-36, Radione RS 20M and R3 restoration 1 2 7/5'20
- Exhibits-details-36a, Radione R 3 RX restoration 2 16/6'20!!
- Exhibits-details-36b, Radione R 3 tuning alignment Hans Goulooze 23/6'20!!
- Exhibits-details-37 1/10'20
- Exhibits-details 38, 6400 Grad Karten und Flak-Meßschablone 4/5'21
- Exhib-det-39, Askania Kinotheodolit, Kth 41; 2+3+4 +5+6! 29/4'22!!
- Exhib-details-40, LMS_10, the German magnetron strapping, 6/10'21!
- Exh-details-41, S&H-KGW2c Wellenmesser ca. 1915 4/3'22 !!
- Exh-details-42, Unknown Kriegsmarine audio DF 2+3+4+5+6+7 28/6'22!!
- Exh-details-43, DMG 5k Michael 2 10/2'23!!
- Exh-details-Ha15K42, new 2! + 3 + 4!+5!+6!+7!+8!+9+10! 4/11'24!
- Exh-45-AEG-K4-magnetophon new 3!+4! 9/9'24!!
- Exh-46-Tonschreiber-b-repair-II new 2 29/6'24!!
- Exh-47-Radar Prüfgerät (test-meter-set) Found manual! 8/10'24!
- Exh-48-electronic-Zerhacker-vibrator substitute 1+2!+3! 20/11'24!!
- Exh-49-Zerhacker/vibrator-operation 1 4/11'24!!
- Exhibits new (situation priviously), Klooster exhibition! Status: 24 May 2013
- Exhibits thoughts, the relevance of quasi 'stand alone' devices Status: 7/8/2013
- Exhibits, of late Graham Winbolt's remaining devices 1 Status: 25/10/2013
- Exhibits, of late Graham Winbolt: Zeitdrucker 38, page 2 Status: 25/10/2013
- Exhibits, of late Graham Winbolt: Hypsometer, page 3 Status: 17/9/2014
- Exhibits, many of our artefacts being displayed differently 33 Status: 14/6/2016
- Exhibits newly reshuffled after Secret Communications 2 Status 8/2'17
- Exhibits and Foundation Promo Film kindly made by Theo Faber 8/1/2018
- Exhibits reshuffled again December '22 1+2+2a+3+4 14/2'23!!
- Expo-Art-Techno exhibition in our museum in conjunction with the local Counsel 25/10'22!!
- Explosives summary of Capacity and Production in Germany (CIOS XXXII-38)
F
- Fachvorträge über Schiffsfunkortung beim Oberkommando der Kriegsmarine (Radar)
- Fading past and memories, about Mr van Oosten, Dijkstra and Poulsen transmitter
- Fading wartime sounds, recordered 1943 at the British Y-station Southwold A Status: 5/4'16
- Felix Transmitter a story on Sittig, the Nazi spy in South Africa 13/3'19
- Felkin report transcriptions, A.D.I. (K) Status: 9/12/2013
- Ferdinand Braun's CRT (Cathode Ray Tube) paper of 1897 (Ann.d.Physik)
- Ferdinand Braun's Nobel (Prize) lecture, held on 11 December 1909 (Handbooks)
- Fernseh AG (GmbH) Hausmitteilungen (research & development papers) (TV-tech)
- Feuerleit-Rechner mit Rechenkondensatoren, André Masson CH 26/8'23!!
- FIAT-CIOS-BIOS rep, Allied investigation on German technology, Status: 13/3/2024!
- Fischer's (F.A.) paper on artificial beam forming, he was famous in sonar (ENT various)
- Flensburg, FuG227, secundary radar aiming at the British Monica radar (Manuals)
- FM broadcasting, future aspects (Method Armstrong)(Radio Mentor 1939/1941)
- Focke - Achgelis Rotary Wing Kite (FA-330)(Achelis?) (FIAT 176)
- Forschungsstelle Langeveld, intercepting strategic telephone US/UK 2 + 3 2/10'20!
- Franke Kompensationsapparat (Potentiometer)(Zs.f.Instrumentenkunde 1904)
- Franz Mayr Case↓ very intriguing .mp4 series 1+2+3!+4+5!!+6 6/4'22!!
- Franz Mayr Case ↑ Considering his diary: 7a+7b+7c+ 7d+7e+7f stop 29/4'22!!
- Frequency & very accurate time measurements by the Swiss Air Force (Hans Jucker)
- Friday Projects 1+2!+3!+4!+5!+6!+7!+8!(10a) 30 /3/2025!! Friday Projects II 1
- FTM, Funktechnische Monatshefte (in progress) (FTM various)
- Fu 5, Die Antennenanpassung der Panzerfunkanlagen, Theoretische Analyse ....!!
- FuBl 3F + FuBL2 project + YouTube demonstrations X+Y+YB+Yc Status: 22/6 '18
- FuBl blind-landing Survey came to a closure, with 2 YouTube films, Status: 8/10'18
- FuBl-Ebl-project by Hans Goulooze, lasting just over 2 years + YouYube films 18/3/19
- FuG 03 Stuttgart receiver module displayed with DMG5K Michael RX 2d Status: 12/6/'15
- FuG 25a, German airborne target identification transponder Erstling by H.Jucker
- Fullep-Fuellop, the Hungarian Secret Service source & K-H Kraemer case 9/3'20
- Funkpeilung als alliierte Waffe gegen deutsche U-Boote 1939-1945 PDF 22/9'20!!
- FuMB26 "Tunis" EW radar search receiver (Cuba Ia and Mücke). (Handbooks)
- Funkhöhenmesser FuG101a mit Frequenzmodulation, by Hans Jucker (Handbooks)
- Fuses, Electric Protection, Fine-sensitive and surge-resisting types ... (BIOS 1771)
G
- G-Schreiber T52d (SFM T52d), (Handbooks papers and product information)
- Garnier Pierre Albert French MA Stockholm 1+2 23/12'22!!
- GAS Turbine Development by B.M.W. (BMW) (CIOS XXVI-30)
- G-Schreiber Fernschreibanschlussgeraet manual and related docs 2, 21/3/2013
- Geheimschreiber T52d repair headache, encountering technical struggle 2 26/6/2013
- G-Schreiber, tracing why the Siemens polarity relay type T 43a do fail Status: 27/11/13
- G-Schreiber, tracing the origine of the failing Geheimschreiber Status: 14/1/2014
- Geheimschreiber Siemens T52d Repair project 9!! Making it operational again 5/4/2013
- Geheimschreiber Rep, YouTube films 47 - 48+50 - 56+62-70+77-79+80-85+86-87 19/3/2013
- Gema X-Gerät, control set of the Seetakt radar, used by German wartime navy (KM)
- German Airborne Gun and R.P. Sights (BIOS 67)
- German Aircraft Industry (CIOS 254)
- German Aircraft Industry Dornier-Werke, Friedrichshafen Area (BIOS-37)
- German Aircraft Maintenance !!! (CIOS XXV 45)
- German Aircraft Paints (BIOS 365)
- German Alkaline Accumulator Industry (BIOS 708)
- German Camera Industry (CIOS 184)
- German Carbon Electrode Manufacture at Griesheim (I.G.F.) (BIOS 338)
- German Cold Cathode Tubes Siemens Reiniger Werke Rudolfstadt (CIOS XXXI-50)
- German Die-Casting Plants (CIOS XXVII-76)
- German Electronic Engineering in the 1930s (synopsis)
- German Fluorescent Lamp Industry and Phospor Chemical Manufacture (BIOS 395)
- German Graphitising Furnances at Meitingen (Siemens Plania) (BIOS 337)
- German Infra Red Driving and Fire Control Equipment (BIOS miscellaneous report 66)
- German Counter-Intelligence (III-F) in Switzerland: von Pescatore, Piert, KV 2/1329 12/7'19!!
- German Intelligence combined Espionage & Counter-Espionage 6/8'20
- German Landing Gear, Design and testing (BIOS 251)
- German Metal rectifier Industry (BIOS 797)
- German military Army and Navy wireless communications (some aspects of 1930-1945)
- German Parachute Design and Manufacture (BIOS 466)
- German Photoconducting Cells for the Detection of Infra-Red Radiation (BIOS-2)
- German Primary Battery Industry (BIOS 362)
- German Quartz Clocks (BIOS 1316)
- German Radar during WW II (World War Two), (Exhibits, Displays and Subject details)
- German Radio Frequency Cables, German coaxial cables and industry (BIOS 1324)
- German Research on rectifiers and semi-conductors !!! (BIOS 725)
- German Research on Semi-conductors, Metal Rectifiers, Detectors & Photocells (BIOS 1751)!
- German Research Work (brief notes) on Kochel, Otterbrunn and L.F.A. Volkerode (BIOS 29)
- German Secundary Batteries (Special Ref. to those used by Army Signals) (BIOS 307)
- German Secundary Battery Industry (BIOS 467)
- German Sound Recording Intelligence report November 1945 Status: 3/7/'24!!!
- German Spying W/T Communications net Maps and some side info! 5/7'18
- German Wartime Struggle to catch up with Allied Power Magnetron Technology (1943-45)works
- German Wireless Communication, mainly with reference to: Cm, Dm and Pulse Technique (BIOS551)
- Geschossflugbahn-Rechner, André Masson, CH, high quality contribution! (+NEW+)
- Giant Wurzburg G, FuMG65 G, 'Würzburg Riese' combined with Freya apparatus !!
- GK-IIIb-SRS-Challenge-modi3.mp4 18/3'23!!
- Gleichwellenrundfunk, synchronous-wave broadcasting, 3 papers (C. Lorenz)(ENT)
- Gleichwellenfunk & gegenseitigen Modulationsbeeinflussung (Luxemburg-effect)(TFT)
- Gimpel-Colepaugh Case 2 Spies landing @ Frenchman's Bay on 29/11'44!
- Gimpel-Colepaugh on mp4 two spies arriving in New York 1st Dec '44 6/8'20!!
- Glossary of some German names for chemical products CIOS XXVIII-62 (CIOS)!!
- Goldschmidt Helmuth Siegfried's FBi case 1+2+3+4+5 † 30/11'22!!
- Goldschmidt a special contribution, by Kees Neisingh NL 16/5'23!!
- Goliath, a 1 MW tuneable VLF transmitter, used for U-boat communications 1943/45
- Gross-Gyorgy KV 2/130 1+2!+3!+4!+5!+6!+7!+8!+9! 28/3'24!!
- Großpeil- und Empfangsanlage Wullenwever Type HF 2076, wide-base HF/DF !!!
- Grundlagen und Bedeutung der modernen Telegraphieverbindung (Telex) (FTM)
- Gruppenhorch-Anlage Baumuster AN301 m,n Sonar, OKM July 1944 Anlagen 1-8
- Gundelach CRT and special valve (tube) catalogue (Handbooks and papers)
- Gyro system principles of Siemens-LGW and Patin, 1944, Bericht Nr.7 (Handbooks)
H
- Handbooks, papers, manuals and product information Status: 21/10/2017
- Heegner (Kurt), aspects of his series resonance quartz oscillator patents
- Heeresneubauamt Stahnsdorf, Abwehr's site 1940 ... 2020 10/4'20
- Hell technische Mitteilung, Entwicklungen (R&D)1929-1939, Rudolf Hell (Handbooks)
- Heinrich Mannheim’s son Günther Mannheim, query: who knows about hi (Radar I)
- Hentig's von trip around the world chased by British Secret Services 1914-1947 mp4 30/11'20!!
- Hentig's Mein Dipolmaten Fahrt ins verschlossene Land (Afghanistan) Büchlein 1918 27/11'20
- Hermann Göring Steel Works, Paul Pleiger Hütte, Stahlwerke Braunschweig CIOS XXIX 30
- Hescho ceramic capacitor catalogue, 1938 (Handbooks and papers)
- Hescho product guide, very interesting product information (Hescho guide 1939)
- H.F. Band Radars, paper on historical aspects of 'over the horizon' radars by H. Jucker
- HF/DF versus U-boat wireless communications (Huff-Duff)
- H.F. Instruments & Measuring Techniques (BIOS 1228)
- High Frequency Magnetophon Magnetic Sound Recorders (FIAT 705)
- High Power Radar Jagdhaus (FIAT 609)
- High Speed Tunnels and other Research in Germany (CIOS XXVIII-47)
- High Speed Schlieren Camera for Observation of Flame Travel (BIOS-14)
- High Strength Aluminium-Zinc-Magnesium Alloy Development in Germany (BIOS-1770)
- High Temperature Refractories and Ceramics (BIOS 465)
- Highly sensitive D.C. controlling & measuring device (FIAT Final Report No. 954)
- Hisentroll and Hisenvert, German apparatus, a British paper of 1946 (Handbooks)
- History of televison, prior to 1937, Entwicklung des Fernsehens (Fernsehen&Tonfilm)
- Hochfrequenz-Fachleute für die Luftwaffe, call for HF-electronic engineers of 1943
- Hoelzer's talk on the design of the analog computer of the V2 (A4) rocket (Handbooks)
- Hohentwiel FuG200, aspects of transmitter circuit design, Hans Jucker(Handbooks)
- Hollerith machines, utilised by Speer's Ministry and for military statistics (BIOS 273)
- Hollmann's interesting book on UHF technologies (1936), Righi, Mesny.. (Handsbooks)
- Horch-Ortung - Elascop und Orthognom acoustic pre-radar apparatus by André Masson
- Hülsmeyer and the early days of radar inventions, sense and nonsense (Radar I)
- Hülsmeyer memorial tablet, and a photograph of those whom contributed (Radar I)
- Hülsmeyer's (Huelsmeyer) radio interview on 50 Years of Radar, 1954 (Radar I)
- Hülsmeyer's coherer receiver of ≈1904/1905, replica (copy)(Archive displays)
- Hülsmeyer's IEEE Milestone Award, on his radar demostration of 1904 22/10'19
- HW 34-2, R.S.S. Final Report on German Funkabwehr and Orpo 27/2'19
- Hydrogen Peroxide Works of Otto Schickert & Co. at Bad Lauterberg & .. (BIOS 294)
I
- I.G. Farbenindustrie A.G. Franfurt/Main (CIOS XXIII-15)
- I.G. Farbenindustrie A.G. Bunawerk, Schkopau, Germany (CIOS XXII-20)
- I.G. Farbenindustrie A.G. Leuna, Germany (CIOS XXII-19)
- I.G. Farbenindustrie-Oppau Works Ludwigshafen (CIOS XXIV-12)
- Institut für Physikalische Forschung Neu Drossenfeld (CIOS XXVIII-41)
- Institutes of the Bevollmaechtigter fuer Hochfrequenz-Forschung (CIOS XXXI-37)
- Interpreting & Conserving Unique Electronics ICUE Workshop call for participation 23/10'14
- Interrogations & Reports on German Methods of Statistical Reporting (BIOS 273)!!!
- Interrogation of German Scientists Regarding Quartz Crystals ...! (FIAT 641)
- Interrogation of German Television and Electronic Authorities (FIAT 294)
- Interrogation of Helmut Gottrup* Dipl.Ing. Elektromechanische Werke (CIOS XXXI-71)
- Interrog. of Dr. Federn (Carl Schenck G.m.b.H.) on matters of vibration&shock!(BIOS1856)
- Interrogation of Prof. Scherzer of the BHF (CIOS File No. XXXII-87)
- Investigation into the design and performance of the Volkswagen (partly) (BIOS 998)
- Iron Cored D.F. Loops and Manufacture of Iron Dust (BIOS 1203)
- Iron Cores (FIAT 792)
- I.T.T., Siemens and Robert Bosch Organizations (CIOS XXXI-38) (NEW)
J
- Jagdhaus high power radar (FIAT 609)
- Jagdschloß (Jagdschloss) radar FuG 404, New photos !! + A Status 8/11/'15!
- Jagschloss: Kreuzeck receiver & system Survey 4!+5! Status: 7/9/15!
- Jagdschloss transmitter stage codename "Eibsee"
- Jakobs (Jacobs) Josef, German Spy dropped on 30 Jan. 1941 near Ramsey 10/2'20
- Japanese Wurzburg (Würzburg) copy 1944/45, It is known they got one but a photo?
- Johann Philipp Reis, 1834-1874-1934, the inventor of the (word) "Telephone" (ENT)
- Joyce William, 'Lord Haw-Haw' ↓ British1+2 KV 2/245 9/7'22!!
- Joyce William, 'Lord Haw-Haw' 2 ↕ British 1+2+3 KV 2/246 23/7'22!!
- Joyce William, 'Lord Haw-Haw' 3 ↕ British +2+3+4 KV 2/247-KV2/249 2/8'22!!
- Joyce William, 'Lord Haw-Haw'-4↑ British 1+2 KV 2/250 11/8'22!!
- JUMO 205 C Baureihe 4, the unique diesel aircraft engine (Manuals)
K
- K 12 Kurssteuerung, gyro to the mini-submarine type 127 (Seehund) Status 18/5/'15
- K 12 adapted for the Seehund midgit submarine starts operating again 3c Status 4/6/'15
- Kathodenstrahlroehre by Manfred von Ardenne's 1933 book (integrally) 16/12'20
- Kauder Richard alias Klatt KV 2/1495 ↓ 1+ 2+3+4+5 5/11'23!!
- Kauder Richard alias Klatt KV 2/1496 ↕ 6+7+8!+9!+10!+11!+12 12/12'23!!
- Kauder Richard alias Klatt KV 2/1497 ↕ 13!+14!+15!+15b! + 9! 2/1'24!!
- Kauder Richard alias Klatt KV 2/1498 ↕16 + 17!+18!+19!+20! 27/1'24!!
- Kauder Richard alias Klatt KV 2/1499 ↑21+ 22!+23!+24! 17/2'24!!
- Kathodophon microphone, ENT paper January 1929 (ENT various)
- Kennelly (Arthur Edwin) 70 years (by K.W. Wagner)(ENT various)
- Keramische Spezialmassen, special ceramic compounds Handreck, Hescho 1935 (ATM)
- Keyword and subject group wizard Status: 9 May 2017
- Klatt and Ostro queries on names and code-names, 2/8'16
- KLATT-OSTRO-JOSEPHINE lecture lasting 2:47 in mp4 video New Status: 9/3'20
- Klein-Heidelberg, a parasitic radar system, which techniques has been recovered! !
- Klein Heidelberg-a WW2 bistatic radar system that was decades ahead of its time K-H, Hugh Griffiths
- Klooster exhibits, to be opened only by those having fast internet access!
- Knickebein receiver FuG28a, receiver of Crooked Leg system, exhibits, archive displays
- Koeln E 52 transcriptions to patents and applications Auszuege
- Koeln E52 photos of the famous 1941 proto-type Luft-Bodenprogramm
- Köln E52 Eichmaschine, an automatic photographical scale calibration apparatus
- Köln E52 (koeln) main subject page
- Koeln E 52 restoration project. Why are we doing it?
- Koeln E 52 recalibrating its microfilm scale professionally
- Kommandogeraet 40, L.Dv. T 1352/1 Flak predictor! Analogue data computing
- Kompensations-Apparate für Gleichspannung (ATM various)
- Kootwijk catalogue of the November 2000 event on aspects of precision measurements
- Kootwijk, aspecten van precisiemetingen, year 2000; 4 new Films mp4 24/2'21!!
- Kootwijk-Radio archives, its remaining paper and photographic documents, up to 2001
- Kootwijk pictures, taken by Klaas Dijkstra in 1927
- Korfu, radar search receiver, introduced very late 1944 or early 1945(archive displays)
- Kraemer Karl-Heinz, KV 2/144↓ 1+2 + 3 8/1'23!!
- Kraemer Karl-Heinz, KV 2/145 ↕ KV 2/146 4+5+6+7+8 21/1'23!!
- Kraemer Karl-Heinz, KV 2/147 ↕ 9+10+11+12+13+14+15 20/2'23!!
- Kraemer Karl-Heinz, KV 2/149 ↕ 16+17+18+19+20+21+22 13/3'23!!
- Kraemer Karl-Heinz, KV 2/151 ↕ 23+24+25+26 29/3'23!!
- Kraemer Karl-Heinz, KV 2/153 ↕ 27+28+29+30+32+33+34 15/5'23!!
- Kraemer Karl-Heinz, KV 2/156 ↑ 35+36+37+38+39+40+41 5/6'23!!
- Krawinkel image-storing cathode ray tube (FIAT 1027)
- Kriegstagebuch-Chef-TLR (KTB) genuine KTB copy
- Kriegstagebuch - Chef-TLR, reissued by Florian Eibensteiner 31 October 2017
- Krupps, Essen incorporating info on Luftfahrtgeraetewerke Hakenfeld(e) (BIOS 286)
- Kuebart Wilhelm Obstlt. KV 2/410 Ausland/Abwehr I Berlin, Part I II 26/8'19
- Kurier U-boat's, misterious, fast wireless signal system (1944/45)
- Kurvenflug Rechner by André Masson
- KV 2/393 - KV 2/394 on von Hentig my extracts; a selection 2/7'18
- KV 2/757-KV 2/768 Trompke Werz case, German espionage in South-Africa 21/11'18!
- KV 2/266 - KV 2/159, Obst ↓ Rudolph & Count Ledebur's Cases 8/10'18!
- KV 2/267on Dr, Erich Pheiffer's ↑ Case, most extensive file Status: 6/5'19 !
- KV 2/3573 & KV 2/2654 Reith & Recke Cases in North Africa 14/11/'18!
- KV 2/2294 the "Passim" the sailing missions to South Africa & South America 19/5'20!
- KV 2/2639 Kraizizek Walter - South-Afrika, PDF 22/8'22!!
- KV 2/283, Vice Consul Dr. Hermann Goeritz in Tanger, RSS intercepts 3/12'18!
- KV 1500-1501+1503, Rote Kapelle and 20 July '44 attempt aspects 27/12'18!
- KV 2/1971 Sonderkommando Pannwitz, on "Rote Kapelle" & "Kent" 27/12'18!
- KV 2/2068 Sukolov ment is: Fritz Kent, real name Anatoly Markovich Gurevich 7/1'19
- KV 2/2074 Trepper the "Grand Chef" in wartime Belgium and France 14/1'19
- KV 2/1487-1490+KV 2/89: Wolf, Becker & Utzinger, espionage in Argentina 2 15/4'19
- KV 2/1722-1724 Hellmuth Osmar Alberto an Argentinean, versus MI5&MI6 22/4'19
- KV 2/3015 Gambke, Raupach and Peters Abwehr related stories 5 14/11'19
- KV 2/3409, Zuelsdorff Part I +II spin-off the Gimpel&Colepaugh case 1/9'20 !!
- KV 2/3409.mp4 a new .mp 4 explaining verbally what it is about 26/10'20!!
- KV 2/467 Goldschmidt @ Peasant, the notional spy 1+2+3+4+ 5+5a 17/11'22!!
- KV 2/196 Fidrmuc Paul (alias Ostro)↓ 2+3+4+5!+6!+7+8+9+10 8/7'23!!
- KV 2/198 Fidrmuc Paul (alias Ostro) ↕11+12+13+14+15+16 29/7'23!!
- KV 2/199 Fidrmuc Paul (alias Ostro) ↕18+19!+20!+21!+22!+23! 22/8'23!!
- KV 2/200 Fidrmuc Paul (alias Ostro) ↕24+25!+26!+27!+28!+29!+30 12/9'23!!
- KV 2/200-3 Fidrmuc Paul (alias Ostro) ↕31! + 32! 19/9'23!!
- KV 2/201 Fidrmuc Paul (alias Ostro) ↑33!+34!+35!! + 36! 9/10'23!!
- KV 2/769 Haller Dr. Kurt 2!+3!+4!+5!+6! 16/6'24!!
- KV 2/907 Dr. J.F.J. van Rensburg SA Ossewa-Brandwag 2!+3!+4!+5! 9/7'24!!
- KV 2/907 Dr. J.F.J. van Rensburg ↓ SA Ossewa Brandwag 6+7! + 8! 21/7'24!!
- KV 2/939 Sittig, Paasche ↕Felix, German agents in S.A. 2!+3!+4!+5!+6!+7!+8! 3/8'24!!
- KV 2/939 Sittig, Paasche ↕Felix, German agents in S.A. +9!+10!+11!+12! 8/8'24!!
- KV 2/944 Masser Part ↑ 2!+3!+4!+5!+6!+7!+8!+9!+10!+11! 22/8'24!!
- KV 2/76 Schurch Theodore John William, Traitor +3!+4!+5!+6!+7!+8!+9! 2/10'24!!
- KV 2/1727 Kraus Alfred Ignatz Maria 1+2!+3!+4! 21/10'24!!
- KV 2/1728 Kraus Alfred Ignatz Maria 5! +6!+7!+8!+9!+10!+11! 6/12'24!!
- KV 2/1947 Schaeffer Frederick Eugene 1+2!+3!+4!+5!+6!+7! 24/1'25!!
L
- Landsberg-Tagungsberichte, conference papers on "Navigation", HF/DF, (Handbooks)
- LD20 reflex klystron and small magnetron, report by Dr. Bürck of Telefunken lab. EL5
- Leibrandt Robey (S.A.) the South African Boxer 1 + 2 + 3 18/1'22!!
- Leichtmetalle als Austausch-Werkstoffe, paper on "Autarkie"(autarky) 1939 (ATM)
- Lichtenstein radars FuG202 & FuG220 SN2, Hans Jucker (Handbooks and papers)
- Lichtenstein Li-SN2 (FuG220) testing panel & antenna (polarisation/antenna switch)
- Light Alloy Foundries in Germany (BIOS 1861)
- Light Metal Production and Development for Aircraft I.G.Farbenindustrie.. (CIOS XXVI-60)
- LMS10 vs CV64, TRE report on the parameters of the German magnetron copy of 1945!!
- Logo-6b-modi-text-explanation new "teaser" impression! 11/8'24!!
- Lorenz A.G. (C. Lorenz AG) (CIOS XXV-12)
- Lorenz 50 Jahre, fifty years anniversary of the C. Lorenz Company
- Lorenz 75 Jahre, the seventy-five years anniversary of the Lorenz Company 9/2'21!
- Lorenz, applications on VHF and UHF, fifty years anniversay of C. Lorenz Company
- Luftboden-Empf-Programm, Telefunken's revolutionary receiver E 52 (Handbooks)
- Luftfahrtforschungsanstalt Hermann Göring Volckenrode, Brunswick (BIOS 160)
- Luftfahrtröhren, German Air Force valves(tubes), including some commenced projects
- Luftwaffe Signal School Köthen (CIOS XXVI-85)
- Luftwaffe wartime instruction film on ECM and ECCM versus Allied EW (Bomber Command)
- Luminous quartz crystal photographs
M
- M1K (=AS60), a magnificent Telefunken transmitter of 1943 (exhibits)(archive displays)
- Magnesium Alloys, Production & Fabrication, I.G. Farben at Bitterfeld (CIOS XXIX-3)!!
- Magnetic flux-deviation detector of a naval-mine 1939/45 (Archive displays&Exhibits details)
- Magnetophon Project 10, making our AEG K8 operational again Status: 20/2/2014
- Magnetophon T8 starts to operate again with reproducing sound 13k, 14L, 15 Status: 30/3/'15!
- Magnetophon T8 countering technical problems part 2 3b Status: 18/5/'15
- Magnetonphon T 8 starts runing OK, far better than it ever did! 6f Status: 1/7/'15
- Magnetophon Project details 1a, unravelling modifications and changes Status: 20/6/2013
- Magnetophon restoration project attempt 5 +6G+6H+ 6K Status: 28 June 2016
- Magnetophon restoration project 8 A 1-Youtube re-considering Status: 10 June 2022
- Magnetophon, selection of relevant patents Status: 21/4/2013
- Magnetophon Sound Recording and Reproduction System, AEG/RRG (BIOS 915)
- Magnetron cavity strapping, from Hans-Joachim Fischer's book of 1956 (Handbooks)
- Magnetron cavity, have Randall and Boot really invented the cavity principle?
- Magnetron split-anode type, Runge's paper of 1934 (Telefunken Zeitung '34)
- Magnetron cold strapping gear? !!
- Magnetron, F.F.O. report on their magnetron design ("Arbeitskreistagung" March'44)
- Magnetron strapping technology (Handbooks&papers)(LMS10 versus CV64)
- Magnetron strapping invented by Mr J. Sayers in 1941 patent US2546870
- Mahle Hot Chamber Pressure Die Casting Machine (FIAT 1153)
- Malabar Radio mp4 aural presentation by Arthur O. Bauer 1920-1945 7/7'20!!
- Malabar Radio, Telefunken-Zeitung paper of October 1925 (Handbooks)
- Mammut new unexpected discoveries reconsidered hypotheses 2 Status: 19/10'16
- Mammut-Wassermann radar! +10b! Stichleitung X-ray 12 13 Status: 16/8/'20 !!
- Mammut-Wassermann part 2, explaining its technique more simple Status: 25/8/'15 !!
- Mammut- and Wassermann Eine Entdeckungsreise PowerPoint PDF 19/1/2016
- Mammut-Wassermann Eine Entdeckungsreise presentation mp4 13/6'20!!
- Manuals, selection of German military "Handbücher" Status: 12 November 2024!!
- Manufacture Synthetic Crystals in the Plant of I.G. Farben Oppau-Ludwigshafen (BIOS468)
- Manufacture of Aviation Gasoline in Germany (BIOS Miscellaneous 72)
- Manufacture of Metallized Paper Capacitor Units, Robert Bosch, Stuttgart (CIOS XXVII-44)
- Max-A and Max-P, an advanced DF homing system (Blaupunkt 1944/45)(Handbooks)
- Mayr Franz case, a German spying network in Persia Status: 4/5/'18
- M.Dv.Nr. 34, Funkverkehrsheft für die Küstenverteidigung OKM November 1943
- M.Dv.Nr 35, manual to G-Schreiber T52d (Geheimschreiber)+OKM NWa 1785/44 gKdos
- Meddo-Bericht, German scientific report on the US 3 cm airborne radar AN/APS15, '44
- MG 15-System, Mehrfach-Gruppen-System, Bezeichnung MG Status 23/4/'18
- Metox Saga, U-boat's radar warning receiver (Huff Duff)
- Mikrofon und Fernhörer Prüfgerät a, article of Radiobote Vienna, by Werner Thote
- Military (telephone) line communications, deployed by the Germans, prior to 1945
- Minutes of a meeting held at Karlshagen (Peenemünde) on 4/12/1944 (gKdos2120/44)
- Mirage-Luftdaten-Zentrale PDF André Masson CH a Survey 20/12'23!!
- Miscellaneous chemicals I.G. Farbenindudtrie (polyethylene = Lupolen H)(CIOS XXVII-85)
- Miscellaneous Electrical Factories in the British and American Zones (BIOS 411)
- Miscellaneous German Radio and Communication Targets (BIOS 153)
- Mischgerät (Mischgeraet), the analog computer of the V 2, (exhibits and displays)
- Mitteilungen über RV-Gerät, Periodical on UHF telephone link techniques 1944 Nr.1 - 14
- Mochi Marcello Case, KV 2/951 Kidnapped Diplomat by S.I.S. 2 + 3 10/12'22!!
- Mücke WSE 2, Wetter-Sonde, Verfahren-Fledermaus, meteorological data transponder
N
- Na-stock number list, Kriegsmarine Nachrichtenmittel, Geräteliste Status:7/5/2017
- Na- stock-list, Kriegsmarine Nachrichtenmittel, test gear of the German Navy 1944
- Wanted support in tracing consignment numbers CT serials
- Nachtfee (FuG136) a survey finding out how the EGON-B system worked Date 18/7/2012!!
- Nachtfee survey page 2, discovering its hidden secrets and technology Status 21/12/2011
- Nachtfee survey page 3, bringing it to function again and finding out how it works Status 22/11/2011
- Nachtfee survey page 3a, superseding page 3, owing to a new phase of our project 5/1/2012
- Nachtfee survey page 4, investigating the quartz controlled module, MLK Lab. Status 22/11/2011
- Nachtfee discussion page, created on 2 January 2012 Status 6/1/2012
- Nachtfee is beginning to function as it was supposed to operate! Status: 5/3/2012
- Nachtfee survey evaluation and conclusion report Status 23 June 2012
- Nachtfee, searching for the means how its data was conveyed Status: 11/4/2012
- Nachtfee, FuG25a IFF system setup, simulating the FuG136 data chain 23/6/2012
- Nachtfee, about Freya-EGON in combination with Nachtfee Status 15/4/2012
- Nachtfee, Hans Jucker's objection against the way I have reconstructed the system Status 18/5/12
- Nachtfee, new additional discoveries from a British wartime report Status 14/5/2012
- Nachtfee, getting a 1000 Hz tuningfork to provide 500 Hz (tuneable) Status: 8/6/2012
- Nachtfee, considerations, explaining new hypotheses differently!! Status: 27/8/2012!!
- Nachtfee, Quartz reference matters, recent investigation Status: 7/7/2012
- Nachtfee Chronology, reflecting all we know in a time line Status: 28 July 2012
- Nachtfee, things to be accomplished in September 2012 and up Status: 28/9/2012!!
- Nachtfee, our progress showed in PowerPoint (PDF) Status: 22 August 2012
- Nachtfee, things done 1- 21/a!!!!, since early September 2012 Status: 24/12/ 2012
- Nachtfee, things done 2- 27!!!! continuing things done 1, Status: 29/3/2013
- Nachtfee, experiments on YouTube 1 - 15, 16 - 24, 25 - 32, 33 - 37+ 71-76 Status: 4/3/2012
- Nachtfee, in the 'Domain of Time' 1- 2 Status: 21/11/2012
- Nachtfee, explaining its final principle a bit differently ppt/PDF 26/11/2012
- Nachtfee, a failing system concept? !new findings! 1- 3/a Status: 8 December 2012!!
- Nachtfee, bits and pieces7, dealing with various subjects Status: 8/February 2013
- Nachtfee, explaining it textually and a mixture of drawings and YouTube films 18/2/2013
- Nachtfee new thoughts, experimetally replacing transistors by valves Status: 10/8/2013
- Nachtfee new thoughts accomplishing 12c, building and testing its circuitry Status: 4/10/2013
- Nachtfee new thoughts, showing the final project results on YouTube Status: 25/10/2013
- Nachtfee a once in a lifetime survey, PDF version of my November 2013 talk Status 17/11/2013
- Nachtfee, a seemingly never ending Saga, 5b new information+!Status: 14/10/2014
- Nachtfee, why can't we access the missing links, before closing the subject? 24/7/14!!!
- Nachtfee, an attempt to explain its principle elaborately, (brainstorming 3) 11/12/14!!
- Nachtfee, experiments with a Rb-standard a quasi absolute reference +D+E+F+G Status:11/4/'16
- Nachtfee Siminar, Deo volente, lectures & demos, status: 8/7'17 25/11 2017
- Nachtfee Seminar'17 leaflet and PowerPoint animation 12/7'17
- Nachtfee a Confrontation (eine Auseinandersetzung)+5***+6 5/9'17
- Nachtfee Seminar held on 25th November 2017, A + B Status: 3/12'17
- Nachtfee Seminar'17 Lecture on PDF Status: 3/12/2017
- Nachtfee Seminar lecture film, mp4 of 25th November '17, re-recorded 8/3'18
- Nachtfee eine (meine) große Entdeckungsreise V5 21/12'20!!
- Nachtfee my exceptional Survey-V6 A PowerPoint presentation in .mp4 28/12'20!!
- Nachtfee revival Survey A + B + C +D + E+F 24/9'21 !!
- Nachtfee-↓-aircraft-display-reconstruction, +2+3+4+5+6+7+8+9+10+11+12 21/4'22!!
- Nachtfee-↕-aircraft-display-reconstruction + 13+14+15+16 3/9'22!!
- Nachtfee-↑-airdisplay-right-hand-side-new +18+19+20+21+22 17/10'22!!
- Nachtfee ↕ acryl air display substitute 2+3+4+5+6+7+8!+9+10+11!+12! 3/11'23!!
- Nachtfee ↑ acrylic airdisplay substitute 13 10/11'23!!
- Nachtfee repair II tracing faults ↓ 2+3!4!+5!+6!+7!+7a!+8!+9! 10/2'24!!
- Nachtfee repair II tracing faults ↑ 10+11+12!+13!+14! 29/6'24!!
- Nachtfee repair II periodical checking 15! 6/9'24!!
- Navigational aids (including the German "Beams" against Britain)
- Navigational Beam System "Elektra - Sonne" (FIAT 1105) 22 January 2013!!
- Naxos, a German mobile radar direction finder (Manuals) 25/4'24!!
- Naxos being operated and shown on YouTube films 97-101 Status: 11/4/2013
- Neumann Kondensator-Flasche concern (Neumann condensor-microphone) Status: 22/11/2014
- Norddeutsche Seekabelwerke Nordenhaus (Bios 297)
- Nordpol affair & Englandspiel related file documents+2a+3 Status: 6/5'19
- Notlandung eines B-17 mit APS-15 an Bord, in der Schweiz (History of radar)
- NTM, Mitteilungen aus dem Gebiet des Marinenachrichtenwesens Heft 6 Nov.1943 !!
- NVK, German Naval Communications Research Establishment (1920 - 1945)
- NVK research, German recollection on Electronic Warfare Technologies 26/5'18
O
- Open Museum day on 21 November 2015
- Open Museum day photo series, taken on 21st November 2015 Status 1/2'16
- Open Museum Day sheduled for 6 May 2023 Flyer (PDF) 6/5'23!!
- Open museum day photos taken on 6th May 2023 14/5'23!!
- Operation Atlas, Kurt Wieland's KV 400-402 Palestine10'44 II Status: 10/9'18
- Optical Activities at Steinheil u. Söhne München (BIOS-40)
- Organisation of Deutsche Versuchsanstalt für Luftfahrt (DVL) (BIOS Final Rep. 200)
- Oslo report of November 1939, Hans Ferdinand Mayer and R.V. Jones (Handbooks)
- Ott Differential Analyser (BIOS 412)
- Owens Arthur alias Snow 1935...1945+ 2+3+4+5+6+7+8a+8b+8c!+8d ↓ 2/8'21!!
- Owens Arthur alias Snow webpage 3: 8e + 9a + 9b + 9c +9d 7/9'21!!
- Owens Arthur alias Snow webpage 4: 10a + 10b + 10c!!! 30/9'21 !!
P
- PA 0 AOB, Hell-mode QSO, with a historical wartime station, ≈ 70 years old !!
- PA0AOB-Hell-mode-demo 25-11-2024, at his QTH status 25/11'24
- Patent-Auszüge, about German patent abridgements 1928 -1945, made 1946/48!!
- Patent selection, of interesting German patent numbers, (Patents DE) 30/11/2012
- PDF documents, how to approach it for keywords effectively
- Pentode (a) for the Battle Front in Three Days replacing S&H C3e tube by WE in 1944!!
- Phased array basics, brief introduction, by Hans Jucker (Handbooks)
- Philips valve type "LV9" a true fore-runner of the Rimlock valve series 9/9'22!!
- Philips wartime espionage reports passed onto British Authorities 1944/45
- Philips Valvo Works, Hamburg Hammerwerke Minden, C.H. Müller Hbg. (BIOS 65)
- Philips Works at Eindhoven, Cios visit on 23-26 September 1944 (by R. Watson-Watt)
- Photosurfaces, report on German photocells, electr.multipliers & TV pick-up (BIOS 530)
- Physik und Technik der ultrakurzen Wellen H.E. Hollmann Bnd 1 & Bnd 2 Status 28/2'15
- Physikalisch-Technische Reichsanstalt (PTR), CIOS Report No. XXX-36 (FIAT-CIOS-BIOS)
- Piezo-electric phenomenon being made visible. Highly exceptional demonstration 10/4/'14!
- Plastic and Wooden Parts in German Aircraft (CIOS XXXI-8)
- Platinum Metals Industry in Germany (BIOS 441)
- Poulsen transmitter at Radio Malabar, (pictures originating from Dijkstra's archive)
- Praun, Albert: "German Radio Intelligence, Army Office of Military History, 1950 7/12'20!
- Precision time measurements in Germany prior to 1950 by means of quartz crystals
- Pressure Gauges, activities & Products of the Firm J.C. Eckhardt (BIOS1109)
- Primary Cells by Prof. A. Schmid (BIOS 413)
- Processing of Polyvinyl Chloride Invest. of German Plastic Plants (BIOS 445) Corrections!
- Product information on, Siemens & Halske, Hartmann & Braun, Steatit-Magnesia
- Production of Dornier D.O. 24 Flying Boat (CIOS XII-5)
- Production of Hydrazine Hydrate I.G. Farben A.G. Leverkusen Germany! (CIOS XXII-18)
- Production of Luminous Compounds at the Works of Auer Gesellschaft A.G. (BIOS 303)
- Production Statistics German Steel Industry 1943 and 1944 (CIOS XXVIII-54)
- Progress in the Time and Radio Frequency Measurments at the PTR Heidelberg (FIAT895)
- Prüffeld-Prüfvorschrift DB/P Prüffeld-Leitung to Berlin radar type FuG224 receiver
- PTE (now Rohde & Schwarz) product catalogue 1938
- PTR quartz-clock, designed by Giebe and Scheibe of the German Bureau of Standards
- Puck, testing whether Naxos is sensitive enough, making one myself Status: 28/5/13
- Pulverised Magnesium (CIOS XXVI-25)
Q
- Quadded Toll Cables (FIAT 287)
- Quatz crystals made by Dutch PTT in the 1950s and 1960s (Alblas Collection)(Archives)
- Quarzuhren (Quartz clocks), 4 papers by A. Scheibe of the German PTR (ATM various)
- Quecksilberthermometer PTR, Mercury precison (Hg) thermometer, (ATM various)
- Queries T-Force party photos (likely) 1(modi)+2 + 3 8/5'24!!
R
- R.A.E. Farnborough 'Rad' series, of former Cas Casper's archive Status: 1/2/'16
- Radar and Electronics Targets Cologne and Vicinity (CIOS XVIII-3)
- Radiotelegrafie in Nederlandsch-Indië 1916 Part I + II + III 4/6'21!!
- Radio Valve and Lamp Industry in Vienna (BIOS 248)
- Radar, 100 Years, about Christian Hülsmeyer's inventions 1903/1904(history of radar)
- Radar and Controlled Missiles (the latter is not found in France Sept.1944) (CIOS I-1)
- Radar experiments on 4.7 cm, Doppler and puls techniques in the US by GE (FTM 1937)
- Radar history, Vorgesch. 1. Generation Frühwarn - Radar bis ca. 1960 H.Jucker (8 MB)
- Radio Malabar, volume 1 until 1928, Klaas Dijkstra's famous book in E-reader format
- Radar News 19, (Funkmessnachrichten 19) of 25.2.1945, British post war translation!!!
- Radar, RCM versus Wurzburg(Würzburg), transcription of U.S. wartime publications
- Radar, who invented it? A survey on Christian Hülsmeyer (Huelsmeyer) and others
- Radio Luxemburg effect, Cross-Modulation phenomena (FTM)
- Radio Mentor, selection of papers on: TV, FM broadcasting, microphone .. (1939/44)!!
- Radio Sonde Transmitters (CIOS XXVIII-20)
- Radiotelegraphisches Praktikum by Rein-Wirtz (1921) > 558 pages
- Rationalization of future German Radio Industry 1939 (Radio Mentor)
- Rauh KV 2/409 Obstlt. Johann Gottlieb Ii Funkleiter Alst Paris 14/7'20
- Rehbock, an ingenious German range calibrator (Auxiliary Radar test-gear)
- Reisz Mikrophon (Reiss microphone) (curious archive displays)
- Reis telephone of about 1861-1865, the microphone and its sound reproducing gear
- Refractories in Turbine Blades, CIOS File XXXI-22 (CIOS)
- Rel.mse.2030a circuit description "Rel beschr 755a", audio spectrum analyzer 1935/36
- Reparatiedag (German apparatus repair-day) held on 12 November 2011 (Klooster)
- Report on a trip to the V2 (=A4) launching site, The Hague in Holland, December 1944
- Report on the Firm of Carl Zeiss, Jena (also on the Carl Zeiss Stiftung) (CIOS XXXIII-51)
- Research and Development of Impulsive Ducts in Germany V-1 engine! (BIOS 1777)
- Research work undertaken by German Universities and Technical High Schools (CIOS XXXI-2)!
- Resotank Type HB14, article Zs f.Hochfr.&Elektroakustik June 1943 (Handbooks)
- Rhodos Impulsmesser R&S 1943/44 explained by some photos 3/8'23!!
- Ritter Maj. - Dr. Rantzau Nikolaus Adolf Fritz (I L) Ast Hamburg 1937-41 19/2'20
- Rohde & Schwarz (PTE) Preisliste of 1941, briefly a products list of 1949
- Rote Drei, communist espionage network against Germany I, II, III Status: 22/7'19
- Rote Drei, Rudolf Roessler @ "Lucie" supplying OKW internal information 22/ 7'19
- Rudi's Corner, dedicated to the concerns of my late very best friend 18/10'21!!
- Rudi's rare books corner: Figl 1; Türkel 2; 12/10'21!!
- Rudi's official documents, 18/10'21!!
- Rudi's conversations, 1+2+3+4+5+6+7+8+9+10+10a+11*+12+14+14b 1/12'21!!
- Rudi's Stasi file 1+2+3!+4+5+6+7+8 30/5'22!!
- Rudis DASD DE-Nummer 7093/L 1941 Zertifikat (Certificate) 13/10'23!!
- Rudis DASD AKTM folder 1936-1955 (1936...1958) PDF 13/10'23!!
- Rufzeichenliste German 'Funkamateure 1937', 'Funkliebhabersender' (DASD-CQ 1937)
- Rukop's paper on Telefunken valves (tubes)(selection) (Handbooks and papers)
- Runge Wilhelm T., letter to Fritz Trenkle 1983 (contribution to the history of radar)
S
- S.A.F. 10 Jahre Selen Trockengleichrichter Süddeutsche Apparate-Fabrik 1938
- Salaam-Condor, Eppler & Sandstede, László Almásy,1942 Part1a+2 +3 NEW 1/4'19
- Salaam-Kondor-(Condor)-mp4 Lázló Almásy's exp. Salaam-Kondor 25/7'20
- Scharf Hans-Karl, KV 2/207-209; Abwehr W/T operator!1+2+3 31/1'22!!
- Schellenberg Survey, British interrogations of '45 Part_II + Part_III 28/5'19
- Schering-Messbrücken (Schering Bridge) (ATM various)
- Schering Vibrationsgalvanometer mit elektr.magn. Abstimmung (Handbooks)
- Schlüssel M4 Begleitpapiere, of Naval Enigma No.15835, which never reached Kiel
- Schlüssel M4 famous German 4 rotor Enigma & text-printer Schreibmax (Archive displays)
- Schluesselregeln fuer die Wehrmacht 1 April 1944 concerning Enigma & G-Schreiber ..
- Schornsteinfeger project, allied report on aspect of German Stealth technology 1944/45
- Schreibmax MZSE and power supply MZSS survey 'NIX' simple printer! (Exhibits details)
- Schulze Case, the Anton Group in Persian tribe territory! 1943-March 44 28/5'18
- Schwabenland receiver repair Survey A+ C+D Status: 27/1'18
- Secret Communications 2 announcement! BC 12/11-19/11 & 3/12 2016 Status: 12/9'16
- Secret Comms 2-1, Tatjana's Enigma like machine on 12/11and 3/12 '16, 1/11'16
- Secret-Comms 2-2, building up our exhibition further Status: 7 November 2016
- Secret Comms-2- First open day held on 12 November 2016
- Secret Communications 2, added Veltman's photos 2 3rd December 2017
- Secret Communications 2 photos by Gerard Vos of 3 December 2017 24/12/'16
- Secret Communications 2, photo series on behalf of Tom van Eijck 1/2/'17
- Secret Communications 2 extra open day on 14 January 2017
- Secret Communications 2 last open day 14 January 2017, photos by Mark Kohn
- Secret Communications(old), 5 exhibition in November 2013 Status: 20/12/2013!!!
- Secret Communications, building up the exhibition on YouTube Status: 27/10/2013
- Secret communications exhibition, impression of visitors on 23 November 2013
- Secret Communications, announcement, Sunday 15 December 2013 we are open!
- Secret Communications exhibition, brief visitors impression 30 November 2013
- Secret Communications, why do we promote such an event?
- Secret comms, Mr Schoemaker, on the 'Dutch Stay-Behind' (Gladio) organisation O&I!!
- Secret Communications 3 preliminary Announcement 1 10/4'19!!
- Secret Communications 3 Flyer-2 introduction 2 20/5'19
- Secret Communications 3, what will be put on display? 28/5'19!
- Secret-Communications 3, new Displays 2 25/10'19!
- Secret-Communications 3, photo's taken during the opening on 16 Nov '19 18/11'19!
- Secret-Communications-3,photos taken 16-nov.2019 by Gerard Vos 26/11'19!
- Secret-communications-3, taken 23-nov.2019 by AOB 15/1'20!
- Secret-Communications 3-photos taken by AOB on 7 December 2019 10/12'19
- Secret-Communications-3-photos by AOB on 21 December 2019 24/12'19
- Secret-Comms-3 photos by AOB 12th January 2020, last exhibition day 15/1'20
- Secret Communications 4 announcement for Autumn exh. 2023!!
- Secret Communications 4 introduction brochure PDF 24/7'23 !!
- Secret Communications 4 photos taken 23-24 September 2023 26/9'23!!
- Secret Communications 4-2 photos taken 2nd December 2023 5/12'23!!
- Seeburg Tisch, ingenious air defence operation table, a Survey! 3+3B Status: 1/12/2015
- Seefliegerhorst Wesermünde (Evacuation from Erpr.St. Lw. Karlshagen) (CIOS XXVI-3)
- Seekabel (Die) 1909, history of telegraph sea-cables + Deutsch-Niederländisches Kabel !
- Seeloewe 1 ↓failed German espionage attempts against England 1940 20/11/'19 !
- Seeloewe 2 ↑ failed Geman espionage attempts on England, Final 8/11'19 !
- Seetakt radar modules, employing TS1 and TS1a valves + module TU106 (TS6) (Gema)
- Selenium Rectifiers S.A.F. Nürnberg. Inst. f. Anorg. und phys. Chem.Darmstadt (CIOS XXVIII-38)
- Selecting a new logo, please help us with making a choice. Status: 22/8/2011
- Siemens condenser microphone type SM7a (Radio Mentor)+(Siemens Zs. 1940)
- Siemens-Hell-Schreiber TFT Bd30 Heft 2, 1941 (new)
- Siemens & Halske Fernsprech-Fernkabel 1929 Paris - Tours - Bordeaux
- Siemens Nachrichtentechnik 1931- 1932 -1933-1934-1936 -1939-1940 - 1941 Status: 1/1'21!!
- Siemens Sikatrop capacitors, from a so-called: Sonderdruck Nachrichtentechnik 1939
- Siemens & Halske Hauptuhr type HU 20/48 min a survey Status: 8/9 April 2015
- Siemens & Halske telephone measuring catalogue 1940 (selection)(Siemens cat. 1940)
- Siemens & Halske Teleprinter, T-Typ 68 (T 68) (FIAT 908)
- Siemens & Halske, classical pre-war components (in progress)(Handbooks leaflets)
- S&H Veröffentlichungen aus dem Gebiete der Nachrichtentechnik 1932 5.Folge
- S&H Veroeffentlichungen aus dem Gebiete der Nachrichtentechnik 1941 2. Folge 22/6'18
- Siemens-LGW Kurssteuerung, das Regelprinzip, Kü4 and K12 gyro system (Handbooks)
- Siemens (1943) Niederfrequenz-Verstärker-Einrichtungen für Fernsprech u Rundfunk ..
- Siemens Symbols, Aus der Geschichte des Hauses S & H, 40 Jahre S&H Zeichen
- Siemens-Übermikroskop, Borries' and Ruska's Electron-Microscope apparatus (1940)
- Siemens-Verdan system for telex error corrections on wireless links (Handbooks)
- SIGESO files!! Most interesting docs!!. To be continued in due course Status: 21/3/2013!!!
- SIGESO transcriptions page Status: 12 August 2013
- Six papers on Television (FIAT 865)
- Skoda works, Pilsen, Czecho-Slovakia (BIOS-43)
- Sloted tube catapult operated by T and Z Stoff for launching the flying bomb (V1) (BIOS 469)
- Some aspects of ONS 5, the convoy that changed the Battle of the Atlantic (Huff Duff)
- Some aspects of the history of radar, 1910 up to 1937 (Radar II)
- Some German Aircraft Armament Projects with part.ref.to Fire Control Devel.(BIOS163)
- Sonar, U-boat's Gruppenhorchgerät (GHG) (Group listening apparatus)
- Sound Recording, Reproducing and other Electro-Acoustic Targets (BIOS 1176)
- Spare Parts and Provisioning in the G.A.F. (Luftwaffe Bauteile) (CIOS XXXI-69) additional
- Spiegel-Galvanometer Kipp&Zonen Delft Holland, Zernike, Moll-Dyck (ATM various)
- Stassfurt Rundfunk Stassfurt (CIOS XXXII-88)
- Statistics: Interrog. of Dr. Wagenführ of the Planungsamt, Speer's Ministry (BIOS 17)
- Steg (Steeg) surplus catalogue of 1958, a very impressing source of information!!
- Steimle Eugen, KV 2/966 1+2+3 6/9'22 !!
- Stegskopf talk, training bright young boys of the year '26' to become experts in radar
- Stenzel's paper on: bearing patterns of grouped radiators (ENT various)
- Stepp Wilhelm 1946 dissertation 1/2'24!!
- Stereophon Sound recording System Developed by Dr. Carlheinz Becker (CIOS XXVI-46)
- Sternmodulator als Doppelgegentaktmodulator (alternative to a ringmodulator)(TFT)
- Structural Work at Focke - Wulf, Bad Eilson (BIOS 285)
- Subject details (about us)
- Subject reference dBase (pdf), our quick facts and data source finder Status:17/9/2018
- Steeg and Reuter (Messrs) Bad Homburg (CIOS XXV-13)
- Studien über Aufgaben der Fernsprechtechnik, Max Langer of S&H, 1936
- Survey of German Research and Development Work on Titanium (BIOS 1179)
- Synthetic Rubber Plant Chemische Werke-Hüls (CIOS XXII-21)
- Synthetic Rubber Plant Buna Werke-Schkopau A.G. (CIOS XXII-22)
T
- T-Force photos 1945 In Schleswig-Holstein and Denmark 10/8'24!!
- Theory of the Reflex Klystron, by Dr. Herbert Doering (FIAT 1182) 14/4'24!!
- TME 11-219, Allied wartime report on German radar (Handbooks)(History of Radar)
- T200FK39, very exceptional designed long distant u-boat transmitter (U-Boot-Sender)
- T200FK39a long range Submarine transmitter evaluated by the US Navy 14/4'24!!
- Telecommunications and Equipment in Germany during the period 1939-1945 (BIOS)!!
- Telefunken 25 Jahre Commemorating that 25 years ago the company was founded
- Telefunken Cathode Ray tube laboratories and Leuchtstoffe, phosphor .. (CIOS XXXII-95)
- Telefunken data sheets on commercial products 1933-1941 (Handbooks)
- Telefunken exclusively owned by AEG, Siemens swopped his 50% share (Radio Mentor)
- Telefunken-Intercontinental SSB telephone technology 2/10'20!!
- Telefunken Metal/Ceramic Valves (BIOS Final Report No. 30)
- Telefunken Mikrofone aus: Funktechnik in Briefen (1938) (Handbooks and papers)
- Telefunken product catalogue of 1919, dealing from 1903 up to 1919. Extremely rare!!
- Telefunken transmitter valves (tubes) "RS data sheets", 1920-1939 (Kootwijk archives)
- Telefunken low and medium power valves (tubes), RV, RL, RG, RGQ and RSQ series
- Telefunken Special Materials for Radio Valves (BIOS 276)
- Telefunkenröhren (valves) Verwendungshinweise, application theory
- Telefunken Zeitung papers 1934, on Magnetron, + Siemens-Verdan error corrections
- Television Development and Application in Germany (BIOS 867)
- Television in France (CIOS XI-1)
- Test Gear for Frequency Modulation and Television (BIOS 1269)
- TFb2 Survey, field carrier-telephony working+YouTube E+F+G +H+K Status 10/6'17
- TFT Telegraphen-,Fernsprech- und Funk-Technik 1936-1944 article selections
- The uses of zinc in Germany (partly) (BIOS 1159)
- Theory of magnetic recording (steel disc and wire) magnetische Tonaufzeichnung(ENT)
- Thyratron, The Evolution of Hydrogen Thyratron (Handbooks)
-
TICOMMS P 038 German Radio Intelligenge by Lt-General Praun 30/11'20 - Titanium Pigments, Titangesellschaft G.m.b.H. Leverkusen (BIOS 451)
- Tonschreiber b, (taperecorder type b, 1944) post war investigation report
- Tonverwerfung und Springen eines Schwingaudions beim Durchstimmen .. (Handbooks)
- Transmission and Reception of Centimeter Radio Waves, US radar techniques 1936!!
- Trochelmann (Heinz), archive documents on Würzburg & Freya related technologies
- Turbine Engine Activity at Ernst Heinkel Aktiengesellschaft (CIOS XXIII-14)
- TV (Fernsehn) reserach (R&D) commenced in Germany 1938 - 1942 (TV technology)
- TV receiver type E 1 (E1), introduction and circuit despription (Radio Mentor 1939/41)
- TV set (Fernseh-Empfänger) type E1 (E 1), comprehensive paper of 1939 (TFT 1939)
- TV 441 lines standard of Germany 1938, Fernseh-Standard für 441 Zeilen (TFT 1938)
- Typex analysis by the German OKH/In 7/VI, with some success! 9/11'20
U
- U-boat wireless (Radio) equipment (Funkausrüstung) (Huff Duff)(exhibits)(exhibits new)
- U-boat's wireless organisation (Funkführung)
- Ultrakurzwellen-Funkbake, E. Kramar, (Lorenz blind-landing-system at VHF)(ENT)
- Urdox-Resistors (Widerstände) (ATM various)
V
- V 1 gyroscoptically controlled platform + Youtube films Status: 6 June 2013
- V 1 Flyer, meant for the people of Antwerp. A very curious time document 9/6/2013
- V 1 Lageregelung, explaining the theory of its gyro-control
- V2, Ortler III - (Papagai), doppler - 'Brennschluß' controlling system. Status: 3/3/'14
- V2 (= A4), Peenemünde (Karlshagen) meeting, to increase its performance, on 4.12.44
- V2-rocket control, (controlling the A-4 rocket theoretically) 1+2 16/8'22!!
- V2, Vorschläge für den Einsatz der Fernrakete A 4, state of planning spring 1942
- Vandormael Armand, The French Transistor (Handbooks papers)
- Verloren Jaren 1943-1945, Johan Kredit's wartime recollections (Dutch but interesting!)
- Verograph-ein früher elektrischer Analogrechner By André Masson CH 21/12'18
- Versorgungs- u. Wartungsgerät GAF D. (Luft) T. 8800/1 + 8800/3 Status: 21/5/2013
- Verwaltungs- und Wirtschaftsbestimmungen des Wehrmachtsbefehlshabers id Niederl.!!
- Vibrationsgalvanometer (vibration galvanometer) three papers (ATM various)
- VO. vom 15.1.44 - RGBt. II S 5, Verordnung zur einschränkung im patentwesen
- Voith-Schneider Propellor (BIOS-28)
W
- Walter Werke, Kiel (CIOS-XXVIII-53)
- Wanted: Technical information on German Mammut F, FuMO 51+52 2 Status: 17/6/'15
- Wanted! CFQ, the Rohde & Schwarz or PTE quartz clock of 1937-1950?
- Wanted! information on an apparatus obtained from the US, 'CT' & 'JEIA 10262' query
- Wanted: an AEG AW 1 Tonmotor, and also technical information on it Status: 5/11'15
- Wartime recollections, by late Johan Krediet: Verloren Jaren 1940 - 1945? (Handbooks)
- Wassermann radar!, a never ending Saga! (FuG 402) Y11A+ Y12+Z! Status: 28/5'22
- Weapons Section of the LFA, Volkerode (BIOS 61)
- Web links, very recommended (hyperlinked URLs); Status: 24 May 2015
- Weise Erwin, interrogation on semi-conducting and ultra sensitive temp...(BIOS 1658)
- Werkstattbuch FuSE62 and FuSE65, Würzburg full service manual data! 30/11/2012!
- Werner von Siemens und das deutsche Patentwesen (1936)(Handbooks&papers)
- Westerlinck (Weasel) case KV 2/244 1+2+3+4 10/10'22!!
- Wichmann Herbert Leiter Ast-Hamburg & Hilmar Dierks 24/2'20
- Wire Program Service of the Reichspost 'Drahtfunk' (FIAT 290)
- Wireless apparatus of the German military Abwehr service, during WW II
- Wirsing Giselher alias "Egmont" 1/1/'19
- Wirtschaftliche Forschungsgesellschaft (WIFO), Interrog. of Helmut Plote (BIOS 122)
- Wolff Kompensator Model A - D (Otto Wolff Berlin) (Zs.f.Instrumentenkunde)
- Wunderwaffen, Germany's 'Miracle Weapons'. File-246 Status: 8 January 2015
- Würzburg-Riese (Giant Wurzburg) FuSE65E (Eisenbahn) (railway version) (Manual) !!!
- Würzburg-Riese samt Gema-Zusatz 15/4'24!!
- Würzburg (Wurzburg), a survey bringing our FuSE62 radar to live again! ZA 8/4/2013
- Würzburg 2, restoring the interactions of the power meter & Rehbock etc 28/5/'13
- Würzburg system, viewing its operation by YouTube films 88-96 Status: 8/4/2013
- Würzburg GL Radar (Deckname Würzburg) (History of Radar)(German language)
- Würzburg (Wurzburg) Werkstatt Foto (workshop photo) Status: 4 December 2013
- Würzburg System Model (Funktionsmodel) re-designed by Mr. Opitz
- Würzburg radar various: Würzburg set-up, Rehbock, NEG62, archive displays
X
- X-Ray Industry in Germany (CIOS XXVIII-31)
- X-Ray Crystallography in Germany & Austria, with spec.ref.to mineralogy (BIOS 1004)
Z
- Zeitwaage, Time balance, measuring time deviations (s/day) of watches (horloges)
- Zeitwaagen, German paper on American Watch-Rate Recorders (ATM various)
- Zepler, Dr. Erich, Ein wechselvolles Leben für die Funktechnik, by Berthold Bosch (GFGF)
- Zeppelin antenna patent DE225204 of 1909 (= Zepp-Antenne)
