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ID = 28861
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Triode, vacuum   Power/Output 
  <1925 rare.
Identical to PA1_Mullard
First year 1923 ? 70 Years of Radiotubes and V. p241
First Source (s)
1924 : British Radio Valves - The Vintage Years, Thrower p.37,38

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 1.5 Ampere / Direct / Battery =

Bright emitter output power valve.

Dimensions (WHD)
incl. pins / tip
x 150 x 60 mm / x 5.91 x 2.36 inch
PA1_Mullard: Anonymous Australian Collector
Fin Stewart

PA1_Mullard: Fin Stewart
Fin Stewart

PA1_Mullard: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector

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