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HL20

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ID = 14309
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum 
Identical to HL20
Similar Tubes
Normally replaceable-slightly different:
  ADHF

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 Taschenbuch zum Röhren-Codex 1948/49   

hl20_so.png HL20: rtt
Anonymous 10 Collector

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Just Qvigstad
Usage in Models 2= 1932?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of

 
hl20.jpg

HL20
 

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