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DET20

Information - Help 
ID = 17718
       
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
Filament Vf 6.3 Volts / If 0.17 Ampere / Indirect / Parallel, (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 Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   
 
det20_uhftriode.jpg
DET20: DR eigene Sammlung
Anonymous 384 Collector

 
det20_sockel.png
DET20: Beier 2, 1957
Anonymous 384 Collector

 
det20.png
DET20: GEC's catalogue supplement
Anonymous 413 Collector


from Just Qvigstad

Collection of a member from D

Forum contributions about this tube
DET20
Threads: 1 | Posts: 2
Hits: 1501     Replies: 1
DET20 (DET20) UHF-Sende-Triode
Dietmar Rudolph
07.Aug.08
  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
Roy Johnson
07.Aug.08
  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

 

 
DET20
End of forum contributions about this tube

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