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6A7_DDR

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ID = 38589
       
Country:
Germany
Brand: Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new) 
Identical to 6A7_DDR = 6SA7_DDR = HF3104 = OSW3104
Similar Tubes
Other shape (e.g. bulb type):
  6SA7GT ; 6А10С ; 6А7
First Source (s)
1949 : -- Collector info (Sammler)

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Information source - - -   
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6sa7_6a7_osw_1.gif 6A7_DDR: Beier, RTB 1965
Wolfgang Eckardt


Just Qvigstad
6sa7~~1.png
6A7_DDR: Werk für Fernmeldewesen Schöneweide
Egon Strampe

Usage in Models 1= 1948??

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

Collection of

 
6a7_6sa7_rft604.jpg

6A7_DDR
 

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