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ID = 3846
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Tube type:  Screen-grid Tetrode   Audio Frequency 
Identical to S22 = B262
Similar Tubes
Other shape (e.g. bulb type):
Other characteristic (electr. data):

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Specified current DC = (Series working)
Description GB: S22 is a MOV-Valve (Marconi-Osram Valve); Tetrode 2 Volt. 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   
S22: s22
Alexandre Lavoie-Girard

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S22: rtt
Anonymous 10 Collector

S22: osram wireless guide 1931
Giuseppe Antonio Tusini

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from Just Qvigstad

Usage in Models 1= 1929 ; 2= 1930 ; 1= 1936?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

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