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ID = 17205
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Transmitting Triode, air cooled 
  Ca. 1925 up to 1945 rare.
Identical to MA4/500

Filament Vf 17 Volts / If 9.2 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
180 x 550 x mm / 7.09 x 21.65 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

ma4500_sock.png MA4/500: elektron taschenbuch 1952
Heinz Höger

MA4/500: own collection
Peter den Boer

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