Foundation for German communication and related technologies

(History of Technology)

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•  About Navigating on this website (consideration, about us) 
•  About the objectives of our Foundation (About us)
•  AEG product leaflets 1930s (Handbooks papers and product information)
•  Airborne command transmitter (transponder?) module (unidentified type number)
•  Akustische Strahlungsleistung von Kreis- und Kugelgruppen(Sonar), F.A. Fischer(ENT)
•  Allied post-war reports on German Science and Industry (FIAT-CIOS-BIOS)(selection)
•  Anniversary 10 Years “Fernseh A.G. 1929 - 1939”, Germany (TV tech 1930 - 1945)
•  Arbeitsgemeinschaft Rotterdam (AGR), minutes of meeting 1943/44 (History of radar)
•  Archive displays, radar, communications, measurments, transmitter, computer
•  Artefacts, on display (exhibits)
•  Aspects of German Airborne Radar Technology 1942-1945 (airborne radar history)
•  Aspects of precision measurements (in Dutch language)
•  Ausdehnungs-Thermometer, History of  Expansion Thermometer 1600 - 1848 (ATM)
•  ATM, Archiv für Technisches Messen, papers on scientific measuring techniques
•  Barkhausen-Kurz, retarding field (B-K)valve theory, H.G. Möller (ENT vairous)
•  Blauschrift-Röhre type LB50, paper on The Skiatron or Dark Trace Tube (Handbooks) 
•  Ballistische (Ballistic) Galvanometer, Flux, Kriechgalvanometer (ATM Various)
•  Bändchen mikrophon (Ribbon type microphone) Siemens & Halske (ENT various)
•  BCD counters, developed in Germany between 1940 - 1945 (BCD counters)
•  Berlin FuG 224 = FuMO81, circuit discription handbook 1944/45
•  Bildtelegraphie, Lorenz-Korn system, 2 contributions, 50 years C. Lorenz anniversary
•  Bolometer-Amplifier, (ATM various)
•  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)
•  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
•  Carl Zeiss Stiftung, transcript of some interesting pages of CIOS report XXXIII-51
•  CFQ Quartz-clock, designed by Rohde and Leonardt of Rohde & Schwarz (CFQ)
•  Conducting properties of aluminium at high frequencies (FTM 1936)
•  Curious (small) archive displays (>curious archive displays<)
•  Dajeukolot (Dajeuhkolot) radio station ≈ 1938 and 1989
•  Das neue Patentgesetz, paper on new German patent-legislation of 1936(Handbooks)
•  Dielectric wires and waveguides (FTM 1938)
•  Diesselhorst Thermokräftefreies Kompensationsapparat 1906-1908 (Zs.f.Instrumk.)
•  Dijkstra's interesting recollections on: Radio-Malabar and his time in Dutch-Indies
•  Diversity reception, Gerät zur Auswahl des lauteren Übertragungsweges (ENT 1932)
•  DK-Classification (Dewey system), Über das Ordnen technischen Schrifttums (ENT)
•  Düsseldorf/Aachen talk ‘06, on Hülsmeyer and his early radar commitments, PDF-ppt
•  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)
•  Elster DMG2T, UHF telephone communication set (curious archive displays)
•  Enigma, aspects of wireless communications during the Battle of the Atlantic
•  Enigma manual M Dv Nr 32/1, Marine Druckschriftverwaltung Nr 32/1 (Handbooks)
•  E.N.T. Elektrische Nachrichten-Technik, paper selection (in progress) (ENT various)
•  Ernst Lecher Institute, research report on radar ECCM technology 1945 (Handbooks)
•  Europe Missed the Transistor, IEEE paper, (Weblinks)
•  Exhibits (radar- communication- audio recorder- measurement- apparatus)
•  Fading past and memories, about Mr van Oosten, Dijkstra and Poulsen transmitter
•  Ferdinand Braun's CRT (Cathode Ray Tube) paper of 1897 (Ann.d.Physik)
•  Fernseh AG (GmbH) Hausmitteilungen (research & development papers) (TV-tech)
•  Fischer's (F.A.) paper on artificial beam forming, he was famous in sonar (ENT various)
•  FM broadcasting, future aspects (Method Armstrong)(Radio Mentor 1939/1941)
•  Franke Kompensationsapparat (Potentiometer)(Zs.f.Instrumentenkunde 1904)
•  FTM, Funktechnische Monatshefte (in progress) (FTM various)
•  G-Schreiber T52d (SFM T52d), Handbooks papers and product information  
•  German Electronic Engineering in the 1930s (synopsis)
•  German Radar during WW II (World War Two), (Exhibits, Displays and Subject details)
•  Gleichwellenrundfunk, synchronous-wave broadcasting, 3 papers (C. Lorenz)(ENT)
•  Goliath, a 1 MW tuneable VLF transmitter, used for U-boat communications 1943/45
•  Gundelach CRT and special valve (tube) catalogue (Handbooks and papers)
•  Handbooks, papers, manuals and product information (in progress)
•  Hell technische Mitteilung, Entwicklungen (R&D)1929-1939, Rudolf Hell (Handbooks)
•  Heinrich Mannheim’s son Günther Mannheim, query: who knows about him? (Radar I)
•  Hescho ceramic capacitor catalogue, 1938 (Handbooks and papers)
•  Hescho product guide, very interesting product information (Hescho guide 1939)
•  HF/DF versus U-boat wireless communications (Huff-Duff)
•  Hisentroll and Hisenvert, German apparatus, a British paper of 1946 (Handbooks)
•  History of televison, prior to 1937, Entwicklung des Fernsehens (Fernsehen&Tonfilm)
•  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) 
•  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)
•  Johann Philipp Reis, 1834-1874-1934, the inventor of the (word) "Telephone" (ENT)
•  Kathodophon microphone, ENT paper January 1929 (ENT various)
•  Kennelly (Arthur Edwin) 70 years (by K.W. Wagner)(ENT various)
•  Keramische Spezialmassen, special ceramic compounds, H.Handreck (Hescho '35)(ATM)
•  Knickebein receiver FuG28a, receiver of Crooked Leg system, exhibits, archive displays
•  Köln E52, patent transcriptions on releated patent applications (Patent-Auszüge)
•  Köln E52, photos of the famous 1941 Telefunken "Luftboden-Programm" catalogue
•  Köln E52 Eichmaschine, an automatic photographical scale calibration apparatus
•  Köln E52 (koeln) main subject page (Köln E52 history)
•  Köln E52 receiver, how to re-calibrate its frequency scale professionally? (Köln E52)
•  Kompensations-Apparate für Gleichspannung (ATM various)
•  Kootwijk catalogue of the November 2000 event on aspects of precision measurements
•  Kootwijk-Radio archives, its remaining paper and photographic documents, up to 2001
•  Kootwijk pictures, taken by Klaas Dijkstra in 1927
•  Kriegstagebuch-Chef-TLR (KTB) Chef technische Luftrüstung, war diary Dec.'44-April'45
•  Kurier U-boat's, misterious, fast wireless signal system (1944/45)
•  Leichtmetalle als Austausch-Werkstoffe, paper on "Autarkie"(autarky) 1939 (ATM)
•  Lichtenstein radars FuG202 & FuG220 SN2, Hans Jucker (Handbooks and papers)
•  LMS10 vs CV64, TRE report on the parameters of the German magnetron copy of 1945
•  Lorenz 50 Jahre, fifty years anniversary of the C. Lorenz Company
•  Lorenz, applications on VHF and UHF, fifty years anniversay of C. Lorenz Company   
•  Luftboden-Empf-Programm, Telefunken's revolutionary receiver E 52 (Handbooks)
•  Luftfahrtröhren, German Air Force valves(tubes), including some commenced projects
•  Luminous quartz crystal photographs
•  M1K (=AS60), a magnificent Telefunken transmitter of 1943 (exhibits)(archive displays)
•  Magnetron split-anode type, Runge's paper of 1934 (Telefunken Zeitung '34)
•  Magnetron strapping technology (Handbooks&papers)(LMS10 versus CV64)
•  Malabar Radio, Telefunken-Zeitung paper of October 1925 (Handbooks)
•  Max-A and Max-P, an advanced DF homing system (Blaupunkt 1944-1945)(Handbook)
•  Metox Saga, U-boat's radar warning receiver (Huff Duff)
•  Military (telephone) line communications, deployed by the Germans, prior to 1945
•  Mischgerät (Mischgeraet), the analog computer of the V 2, (exhibits and displays')
•  Navigational aids (including the German "Beams" against Britain)
•  Naxos, a German mobile radar direction finder
•  Notlandung eines B-17 mit APS-15 an Bord, in der Schweiz (History of radar)
•  NVK, German Naval Communications Research Establishment (1920 - 1945)
•  Patent selection, of interesting German patent numbers, (in progress)(Patents DE)
•  PDF documents, how to approach it for keywords effectively
•  Phased array basics, brief introduction, by Hans Jucker (Handbooks)
•  Poulsen transmitter at Radio Malabar, (pictures originating from Dijkstra's archive)
•  Product information on, Siemens & Halske, Hartmann & Braun, Steatit-Magnesia
•  PTE (now Rohde & Schwarz) product catalogue 1938
•  PTR quartz-clock, designed by Giebe and Scheibe of the German Bureau of Standards
•  Quarzuhren (Quartz clocks), 4 papers by A. Scheibe of the German PTR (ATM various)
•  Quecksilberthermometer PTR, Mercury precison (Hg) thermomter, (ATM various)
•  Radar experiments on 4.7 cm, Doppler and puls techniques in the US by GE (FTM 1937)
•  Radar, RCM versus Wurzburg(Würzburg), transcription of U.S. wartime publications
•  Radio Luxemburg effect, Cross-Modulation phenomena (FTM)
•  Radio Mentor, selection of papers on: TV, FM broadcasting, microphone (1939-1944)
•  Rationalization of future German Radio Industry 1939 (Radio Mentor)
•  Rehbock, an ingenious German range calibrator (Radar test-gear)
•  Rel.mse.2030a circuit description "Rel beschr 755a", audio spectrum analyzer 1935/36
•  Report on a trip to the V2 (=A4) launching site, The Hague in Holland, December 1944
•  Resotank Type HB14, article Zs f.Hochfr.&Elektroakustik June 1943 (Handbooks)
•  Reisz Mikrophon (Reiss microphone) (curious archive displays)
•  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)
•  Schering-Messbrücken (Schering Bridge) (ATM various)
•  Schering Vibrationsgalvanometer mit elektr.magn. Abstimmung (Handbooks)
•  Seetakt radar modules, employing TS1 and TS1a valves + module TU106 (TS6) (Gema)
•  Siemens condenser microphone type SM7a (Radio Mentor)+(Siemens Zs. 1940)
•  Siemens & Halske telephone measuring catalogue 1940 (selection)(Siemens cat. 1940)
•  Siemens & Halske, classical pre-war components (in progress)(Handbooks leaflets)
•  Siemens-Übermikroskop, Borries' and Ruska's Electron-Microscope apparatus (1940)
•  Siemens-Verdan system for telex error corrections on wireless links (Handbooks)
•  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)
•  Sonar, U-boat's Gruppenhorchgerät (GHG) (Group listening apparatus)
•  Spiegel-Galvanometer Kipp&Zonen Delft Holland, Zernike, Moll-Dyck (ATM various)
•  Stenzel's paper on: bearing patterns of grouped radiators (ENT various)
•  Subject details (about us)
•  Subject reference dBase (pdf), our quick facts and data source finder (in progress)
•  Telefunken exclusively owned by AEG, Siemens swopped his 50% share (Radio Mentor)
•  Telefunken Mikrofone aus: Funktechnik in Briefen (1938) (Handbooks and papers)
•  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
•  Telefunkenröhren (valves) Verwendungshinweise, appication theory(Kootwijk archives)
•  Telefunken Zeitung papers 1934 , on Magnetron, Siemens-Verdan error corrections
•  Theory of magnetic recording (steel disc and wire) magnetische Tonaufzeichnung(ENT)
•  Thyratron, The Evolution of Hydrogen Thyratron (Handbooks)
•  Tonschreiber b, (taperecorder type b, 1944) post war investigation report
•  Tonverwerfung und Springen eiens Schwingaudions beim Durchstimmen .. (Handbooks)
•  TV (Fernsehn) reserach (R&D) commenced in Germany 1939 - 1942 (TV technology)
•  TV receiver type E 1 (E1), introduction and circuit despription (Radio Mentor 1939/41)
•  U-boat wireless (Radio) equipment (Funkausrüstung) (Huff Duff)
•  U-boat's wireless organisation (Funkführung)
•  Ultrakurzwellen-Funkbake, E. Kramar, (Lorenz blind-landing-system at VHF)(ENT)
•  Urdox-Resistors (Widerstände) (ATM various)
•  Vibrationsgalvanometer (vibration galvanometer) three papers (ATM various)
•  Web links, very recommended (URLs)(in progress)
•  Werner von Siemens und das deutsche Patentwesen (1936)(Handbooks&papers)
•  Wireless apparatus of the German military Abwehr service, during WW II
•  Wolff Kompensator Model A -D (Otto Wolff Berlin) (Zs.f.Instrumentenkunde)   
•  Würzburg GL Radar (Deckname Würzburg) (History of Radar)(German language)
•  Zeitwaage, Time balance, measuring time deviations (s/day) of watches (horloges)
•  Zeitwaagen, German paper on American Watch-Rate Recorders (ATM various)