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OSW2025 Info
Country:  Germany      Brand:  Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.) 
  Tube type:  Double Triode   VHF 
Tube ID = 21912
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Identical to OSW2025 = ECC91 = 2025_OSW = HF2025
Similar Tubes 6J6 (can normally be replaced - small diff'ce)   6n15p (can normally be replaced - small diff'ce)  

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel, (AC/DC) / If: 0.45 Ampere / Vf 6.3 Volts /
Dimensions (WHD) 18 x 52 x mm / 0.71 x 2.05 x inch
Weight 8 g / 0.28 oz
Literature

2025_ecc91.gif
RFT Röhrentaschenbuch 1954
Wolfgang Eckardt

 
ecc91_daten1.png
Radio u. Fernsehen 5/55
Wolfgang Eckardt

No further Information for

OSW2025    

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04DecX