Antique radios, Old Time Radios

OSW2025

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	Normally replaceable-slightly different: 6J6; 6n15p

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

RFT Röhrentaschenbuch 1954
Wolfgang Eckardt

Radio u. Fernsehen 5/55
Wolfgang Eckardt

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OSW2025

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