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S0.8

Information - Help 
ID = 32805
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to S0.8
Similar Tubes
Heater different:
  S215
First Source (s)
Sep.1928 : - - Manufacturers Literature

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 0.8 Volts / If 0.8 Ampere / Direct / Specified voltage AND current AC/DC
Description

"AC Directly Heated Cathode Valve with screened grid." Marconi.
Ra=200k ohms at Va=150. G=160

 
Information source History of the British Radio Valve to 1940   p. 170

b4_tetrode~~9.gif S0.8: Fin Stewart
Fin Stewart


Just Qvigstad
 
s0d8.jpg

 

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