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ID = 13636
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  TRIODE (Detail uncertain) 
Identical to 38026
Similar Tubes
Differences not known by us:

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
Filament Vf 1.5 Volts / If 1 Ampere

This code is not listed in Tube Lore by Sibley and even in the 1950 Cross Index by Bureau of Ships.

This five digit Navy coding system usually put the prefix 38 before the commercial code of the tube. Should this tube ever existed, probably it was a '26' screened to Navy specs..

Information source Taschenbuch zum Röhren-Codex 1948/49   

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