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HD24

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ID = 14286
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Developer: MO Valve Co. Ltd.; GB 
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to HD24 = VR44 = CV1044 = HL21DD = 210DDT

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fp) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Information source History of the British Radio Valve to 1940   p. 140 & 166
Babani, International Radio Tube Encyclopaedia   p. 108 & 109
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

s_412_g_3.gif HD24: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


Just Qvigstad
Usage in Models 4= 1940 ; 1= 1948 ; 1= 1949

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of

 
hd24_1.jpg

HD24
 

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