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LS7

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ID = 26076
       
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 LS7 = CV1660 = VT82_GPO

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Telephony
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Battery =
Description

Amplification factotr 10. Also GPO type VT82

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 108 x mm / x 4.25 x inch
Information source Babani, International Radio Tube Encyclopaedia   page 118

b4~~9.png LS7: Fin Stewart
Fin Stewart


Just Qvigstad
Usage in Models 1= 1926?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 
gbosramls7.jpg

LS7
 

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