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ID = 80638
Brand: Lorenz; Berlin, Zuffenhausen u.a.
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
  Late but very rare. ***
Identical to LH406D
Similar Tubes
Other characteristic (electr. data):
  B442 ; H406D
First Source (s)
15.Mar.1929 : Funk Bastler

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Information source Funk Bastler   

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