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ID = 13687
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to A206
Similar Tubes
Normally replaceable-slightly different:
  A214 ; RE062 ; TD2
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 1.7 Volts / If 0.06 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   Funke RPG Karte 141
Babani, International Radio Tube Encyclopaedia   p. 42 & 43
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
L'ABCDaire des lampes de TSF des jeunes années

1_142.png A206: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
A206: Valvo katalog, 1928.
Sándor Selyem-Tóth



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