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ID = 4070
United States of America (USA)
Tube type:  Gas Triode 
Identical to 00A = UX200A = D400A = 200X00-A = PA200A = 200A = 5VD_vanHorne = TC200A = SX200A
First Source (s)
1926 : -- Collector info (Sammler)

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
Filament Vf 5 Volts / If 0.25 Ampere / Direct
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

00A: MK-Röhrentabelle
Daniel Consales

171_1.png 00A: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
00A: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector

More ...
Usage in Models 7= 1927?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):7


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