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ADHF

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ID = 15543
       
Country:
Great Britain (UK)
Brand: Clarion Radio Valve Co.; London
Tube type:  Triode, vacuum   Universal 
Identical to ADHF
Similar Tubes
Normally replaceable-slightly different:
  HL20 ; REN1821

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 20 Volts / If 0.18 Ampere / Indirect / Specified current DC = (Series working)
Information source History of the British Radio Valve to 1940   p. 144
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 141, p. 189
Taschenbuch zum Röhren-Codex 1948/49

s_6_g_13.gif ADHF: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


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