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LS9B

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ID = 58914
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to LS9B = VT80A_GPO = CV1658

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Telephony
Filament Vf 2 Volts / If 0.15 Ampere / Direct / Specified voltage AND current AC/DC
Description

Amplification factor 30. Also GPO type VT 80A.

 
Dimensions (WHD)
incl. pins / tip
x 108 x mm / x 4.25 x inch
Information source Babani, International Radio Tube Encyclopaedia   Page 118 & 119

b4_1~~50.png LS9B: Fin Stewart
Fin Stewart


Just Qvigstad
 
marconi_ls9b_nvm.jpg

 

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