Antique radios, Old Time Radios

OSW3104

Country:	Germany		Brand:	Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
			Tube type:	Pentagrid-Converter (Heptode) Pentagrid (new)

Tube ID = 21914


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Identical to	OSW3104 = 3104_OSW = HF3104 = 6A7_DDR
Similar Tubes	Other shape (e.g. bulb type): 6SA7GT; 6a10s; 6a7
First Source (s)	1949 : -- Collector info (Sammler)

Base	Octal (Int.Octal, IO) K8A, USA 1935
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.3 Ampere / -: Indirect / -: Parallel / series AC/DC /


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Michael Schlör

W.E.
Wolfgang Eckardt

Datenblatt
Wolfgang Bauer

Usage in Models (calculation each 25th of the month)	1= 1945? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 1

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OSW3104

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