Antique radios, Old Time Radios
DET20
Country:
Great Britain (UK)
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Identical to |
DET20
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Similar
Tubes |
Normally replaceable-slightly different:
CV6
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Base |
Octal (Int.Octal, IO) K8A, USA 1935
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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.
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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
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DET20: Beier 2, 1957
Anonymous 384 Collector
More ...
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Just Qvigstad
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DET20: GEC's catalogue supplement
Anonymous 413 Collector
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Collection of
Collection of a member from D
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Forum contributions about this tube
DET20
Threads: 1 | Posts: 2
Hits: 1983 Replies: 1
DET20 (DET20) UHF-Sende-Triode
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Dietmar Rudolph † 6.1.22
07.Aug.08
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1
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
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Roy Johnson
07.Aug.08
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2
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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DET20
End of forum contributions about this tube
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