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6SA7_DDR

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ID = 49178
       
Country:
Germany
Brand: Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new) 
Identical to 6SA7_DDR = 6A7_DDR = HF3104 = OSW3104
Similar Tubes
Other shape (e.g. bulb type):
  6SA7GT ; 6А10С
Normally replaceable-slightly different:
  6SA7
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 / Parallel / series AC/DC
Tube prices 1 Tube prices (visible for members only)
Literature - - -   
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6sa7_3104_osw.jpg
6SA7_DDR: W.E.
Wolfgang Eckardt

 
6sa7_ddr_so.png
6SA7_DDR
Michael Schlör

 

Usage in Models 3= 1949? ; 6= 1950 ; 2= 1951 ; 1= 1956

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12


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