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HSD

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ID = 14337
       
Country:
Great Britain (UK)
Brand: Ferranti, GB
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to HSD
Similar Tubes
Normally replaceable-slightly different:
  DH30
Base British-7-Pin, old (M7A) (Codex=Nb)
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.3 Ampere / Indirect
Information source History of the British Radio Valve to 1940   p. 146 & 179
Babani, International Radio Tube Encyclopaedia   p. 112 & 113
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
s_394_g.gif HSD: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad 		ferranti_hsd_data.png
HSD: Ferranti Valves List Wb. 560
Achim Dassow
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Usage in Models 1= 1934
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Literature "Ferranti Valves"
 
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