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ID = 36310
Brand: Common type Europe tube/semicond.
Developer: Siemens; D (S.& Halske / S. Electrogeräte) 
Tube type:  Triode, vacuum   Universal 
Identical to PTT2 = Ba = R111
First Source (s)
1928 : Saga of the Vacuum Tube, Tyne p.437

Base EU-Telephone 5-pin (G5K)
Filament Vf 3.5 Volts / If 0.5 Ampere / Direct / Battery =
Description Weitverkehrsröhre (Poströhre) 
Dimensions (WHD)
incl. pins / tip
49 x 123 x 32 mm / 1.93 x 4.84 x 1.26 inch
Weight 71 g / 2.50 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
PTT2: Aus meiner Sammlung
Rudolf Osterkamp

PTT2: rtt
Michael Schlör

PTT2: Technique de l'ingénieur
Patrice Zeissloff

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