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ID = 50727
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Common type Europe tube/semicond. 
Tube type:  OCTODE 
  Ca. 1925 up to 1945 rare.
Identical to RAK2 = AK2

Base Europe side contact P8A (Au P, 8SC) Top contact with a cap.
Filament Vf 4 Volts / If 0.65 Ampere / Indirect / Parallel, (AC/DC)
Information source - - Manufacturers Literature   1-11-1937
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RAK2: Telefunken Werkstattbuch
Wolfgang Bauer


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