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4600-18

Information - Help 
ID = 15466
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum 
  <1925 very rare. ***
Identical to 4600-18

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=En) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 2.5 Volts / If 0.4 Ampere / Direct
Description

Probably a triode for keyed communication sets aboard observation airships.

The sample in the photos has 'US' etched on the glass bulb.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Collector info (Sammler)   
 
philips_asimmetrica_3_ridotta.jpg
4600-18: collezione privata
Davide Casarosa

More ...
 
4600_sock.png
4600-18: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 

from Just Qvigstad


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