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ID = 61383
United States of America (USA)
Brand: Electrical Research Laboratories Inc. (Erla); Chicago, Illinois
Developer: General Electric for Brand RCA-Radiotron; Bridgeport CT, Syracuse NY 
Tube type:  Gas Triode   Detector 
Identical to 200X00-A = 00A = UX200A
Similar Tubes
Normally replaceable-slightly different:

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct

An equivalent of UX200A/00A gas detector.

ERLA tubes were advertised in 1926 by Electrical Reserach Laboratories, 2500 Cottage Grove Avenue, Chicago, Illinois.

For use as a supersensitive detector in amateur receiveing sets..

Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 47 g / 1.66 oz
Information source Saga of the Vacuum Tube, Tyne   

200x00_a.png 200X00-A: Fin Stewart
Fin Stewart

Just Qvigstad

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