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DET20

Country: Great Britain (UK) Brand: MO Valve Co. Ltd.; GB Developer: MO Valve Co. Ltd.; GB  Tube type:  Triode, vacuum   VHF  Identical to DET20 Similar Tubes Normally replaceable-slightly different:   CV6 Base Octal (Int.Octal, IO) K8A, USA 1935 Was used by Transmittertube (Radio) Filament Vf 6.3 Volts / If 0.17 Ampere / Indirect / Specified voltage AC/DC Description Horned triode with separate anode and grid top caps. Meets the CV6 specification with a slightly lower heater current. Classified as a transmitter tube (DET = Dull Emitter Transmitter), it was also used as a local oscillator.   Information source Babani, International Radio Tube Encyclopaedia   p. 198 & 199 -- Original-techn. papers.    The Saga of Marconi Osram Valve Taschenbuch zum Röhren-Codex 1948/49 DET20: Beier 2, 1957 Anonymous 384 Collector More ... Just Qvigstad DET20: GEC's catalogue supplement Anonymous 413 Collector Museum "Musée de la radio - Fondation Marconi" Collection of Collection of a member from D Patrick Marinus (B)

DET20

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Hits: 2106     Replies: 1 DET20 (DET20) UHF-Sende-Triode
Dietmar Rudolph † 6.1.22 07.Aug.08	1 DET20 (DET20) UHF-Sende-Triode  Daten gemäß Beier 2, 1957: Uf = 6,3V If = 0,17A (bei Beier ist ein Druckfehler: Uf = 0,3 V; Das kann nicht stimmen, da der Kaltwiderstand des Heizfadens ca. 18 Ω beträgt.) Ua = 300V, Ia = 25 mA, S = 3mS, Ra = 8,3 kΩ, Na =3,5W, ce = 1pF, ca = 1pF, cg/a = 2,1 pF DR
Roy Johnson 07.Aug.08	2 DET20  6.3V at 0.17A is correct.  The CV6 specification is for 0.2A (or less) and the DET20 meets this specification.  The equivalence has been changed to "normally replaceable". Thank you, regards, Roy

 

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