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ID = 2140
Tube type:  Triode, vacuum 
Identical to U410
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Direct
U410: gerd.eisenbarth
Gerhard Eisenbarth

U410: Telefunken Werkstattbuch
Wolfgang Bauer

U410: Funk-Bastler 1927, Heft 14
Hartmut Völler

Usage in Models 1= 1927

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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