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PM12A

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ID = 12874
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to PM12A = PM12A_UX
Similar Tubes
Normally replaceable-slightly different:
  SG2V
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Description

Clear or metallised bulb available.
Gm=1.5mA/V at Va=125, Vg2=75 and Vg1=0. Ra=330k.

 
Information source History of the British Radio Valve to 1940   p. 141 & 184
Babani, International Radio Tube Encyclopaedia   p. 128 & 129
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
3_23.png PM12A: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		pm12a.png
PM12A: Mullard Maintenance Manual 1954
Achim Dassow
Usage in Models 1= 1929 ; 1= 1931? ; 4= 1931 ; 6= 1932? ; 4= 1932 ; 1= 1933?? ; 7= 1933? ; 5= 1933 ; 1= 1934?? ; 2= 1934? ; 2= 1934 ; 1= 1936
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):35
 
pm12a.jpg

 
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