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ID = 13187
United States of America (USA)
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to 01B
Similar Tubes
Normally replaceable-slightly different:
Heater different:

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.125 Ampere / Direct / Battery =

This is a 01A, 201A etc, but has a filament current of 125 mA instead of 250 mA.

This particular tube is branded Marconi and also has an RVC logo on the base

Dimensions (WHD)
incl. pins / tip
45 x 108 x 47 mm / 1.77 x 4.25 x 1.85 inch
Information source Tube Lore (II)   p. 25
-- Collector info (Sammler)   
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

4a_ux4.png 01B: own collection
Peter den Boer

Just Qvigstad

Collection of



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