TFT Band 28 Heft 7 1939 pages 246 - 271 (pdf, 3.6 MB)
Zur Entwicklung des Einheits-Fernsehempfängers, by J. Georg Weiss (Mittleilungen aus der Forschungsanstalt der Deutschen Reichspost); Der Einheits-Fernsehempfänger E1 (E 1) by R. Andrieu (Telefunken) and F. Rudert (Fernseh A.G.)*; Strahlungs und Hochspannungserzeugung des Einheits-Fernsehempfängers E1 (E 1), by Th.Mulert (Fernseh A.G.) and R. Urtel (Telefunken); Das Bildschreibrohr des Einheits-Fernsehempfängers by Henning Knoblauch (Telefunken) und Erich Schwartz (Fernseh A.G.); Ein Prüfgerät zur Messung des Frequenzganges des Einheits-Fernsehempfängers by P. Deserno and M. Messner (C. Lorenz)
*Fernseh AG company structure was shortly thereafter, due to strong pressure of the German Government, changed in: Fernseh Gesellschaft mit beschränkte Haftung, commonly known as Fernesh G.m.b.H. Dr. Siegmund Loewe (had to)gave up his company share, and had immigrated to the US in the mean time.
Keywords: RPF; introduction to the German "People TV set" known as Einheits-Fernsehempfänger introduced at the Funkausstellung of Berlin August 1939; its circuit description; Blockdiagram; It should cost 630 RM, also price indications of comparable British TV tests of: Burndept - Ekco - Ferranti - GEC - K.-B ? - Marconiphone - R.G.D. - Tannoy - Vidor - McMichael - Murphy; Specifications were: 441 lines - Frame frequncy 25 Hz - positive modulation - maximum video bandwidth 2.8 MHz, 5 x EF14 + 1 x ECH11 + 1 x EF11 + 1 x EL11 + 1 x ES111 + 1 x EZ1 + 1 x AZ11 + 1 x AZ12 + 1 x RFG5; Gesammtschaltbild = principle schematic diagram; Der austauschbare Ultrakurzwellenteil photo of the changeable VHF receiver front-end; Bildverstärker = Video amplifier and its frequency response; Übertragungskurve des gesamten hochfrequenten Bildkanals; Frequenzgang des Bildkanals, gemessen mittels modulierter Zwischenfrequenz; Die Verstärkung der einzelnen Stufen des Empfängers; Verlauf der Spannung am Synchronisiergitter des Zeilenablenkrohres (= ES111); Verlauf der Spannung am Synchronisiergittter des Bildablenkrohres (= ES111) (ES 111); Tonverstärker; Innenansicht des Empfängerschassis The lay-out of the chassis wiring, which is similar to what was common practice in the 1950s in German TV set manufacturing; Erzeugung eines Stromsägezahn; Zwei-Pol-Charakteristik der rückgekoppelten Röhre; Synchronisierung durch Stromverteilungssteuerung ... ; Eisenjoch Vertikalablenkung (deflection yokes); Rasterverzeichnung bei einem ebenen Schirm - Kissenraster; Zusammenbau von Ablenkjoch, Zeilenspulen und Konzentrierspule des E1; Zeilenspulen und Zeilentransformator; The high tension and horizontal deflection transformer was an integral part of the deflection system mounted on the picture tube; The E1 TV set employed a rectangular (rather flat) screen. Whereas most manufactures in other countries like in Britain and America used in post war years still circular picture tubes (untill the early 1950s); Systemaufbau der Spezialröhre ES111 (inside view of the ES111 deflection valve); Schaltbild des Zeilen Zeilengenerators (circuit of the line output stage) - intersting is, that they used already the fly-back voltage to generate high tension for the picture tube. Also the filament of the HT rectifier RPG5 was supplied from the line output transformer (Zeilenentransformator); Wickelkörper des Zeilentransformators; Schaltbild des Generators für die Vertikalablenkung - also equipped with an ES111; Close photo of the E1 picture tube with its P-socket like base; Ein Prüfgerät zur Messung des Frequenzganges des Einheits-Fernsehempfängers (Wobbler for production alignment of the frequency response of various band-pass filters) (designed by C. Lorenz).
My friend Tom Going, also a member of IEHG (International Electronics History Group), sent me his following comments, to the list of British TV set manufactures mentioned at page 4 of the E1 pdf file:
I thought the listing of Television manufacturers was interesting,
too, but partly because of who were left off the list:
Bush (making also for Baird)
All these companies made significant technical efforts in developing
television before the war; indeed Pye's 45 m c/s I.F. strip became of
importance for Radar, using as it did the EF50 valves. The set in
which this was to be used was "written up" in an Proc. IEE paper by
B.J. Edwards when it became apparent that it would not go into
production, ca. 1941.
Cossor had people such as O.Puckle and L.H. Bedford (Richard Trim
would know all about this) and made Cathode Ray tubes.
Pye worked hard on television, and had for a time Peter Goldmark
working for them, before he went to CBS in America; they also had
later (ca. 1938) taken a controlling interest in Hivac (which I think
Keith is writing about, in his valve book)and they had Gerhard
Liebmann , emigre from the Loewe company, as a CRT man, I believe,
working for the Pye valve company, Cathodeon.
BUSH .... DID use the secondary emission valve, the TSE4 (Philips
EE(P)1 dressed as Mullard with a 4-v heater)in their amplifier
...........of the other companies in the list:
Burndept, R.G.D., Tannoy, Vidor and McMichael were very small concerns
as far as television was concerned and will have sold very few sets in
R.G.D. or Radio Gramophone Developments were a "Rolls Royce" of a
company, and their products were exclusive, very solid, and very
K.B. or Kolster-Brandes was the British trade-mark for radio and t.v.
of the International Standard Electric Company of America.
I am writing from memory here........
'bible' for all this. Somewhere I do have some Model listings with
valve-lineups, from contemporary journals of the day.
It should be remembered that Britain through the BBC ( albeit
reluctantly) did have some regular television broadcasting, intended
for home reception. But the sets were a luxury item, comparable in
cost to a small car in some cases, (itself a luxury for most people).
I believe I have read that the total number of domestic receivers
sold did not exceed 20,000.
Back to: TFT 1936-1944 main page
Regard also: TV history
Regard also: Fernseh A.G. of 1939 July and August: TV Tech 1938-1942
Regard also, or go back to: 441 line standard
Back to: Handbooks papers and product information