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ID = 19830
Great Britain (UK)
Brand: Lissen Ltd.; London and Richmond, Surrey
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to SG2V
Similar Tubes
Normally replaceable-slightly different:
  220VSG ; PM12A ; S208 ; VS2
First Source (s)
02.Sep.1932 : Wireless World (The), London (WW, 79) p243
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.15 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   1930
History of the British Radio Valve to 1940
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

s_2_g_12.gif SG2V: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

Just Qvigstad
SG2V: own collection
Peter den Boer

Usage in Models 1= 1931? ; 2= 1933? ; 1= 1933 ; 1= 1934? ; 1= 1934

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


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