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X73

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ID = 8725
       
Country:
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Tube type:  HEPTODE   Frequency converter   Controlling (mu) 
Identical to X73
First Source (s)
1940 : - - Manufacturers Literature

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ue)
Filament Vf 6 Volts / If 0.16 Ampere / Indirect / Parallel / series AC/DC
Description Variable mu Heptode designed for medium and long wave frequency changing.
Part of the "Uniwatt" range designed for universal 6/6.3V ac/battery and series operation. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
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X73: Telefunken Werkstattbuch
Wolfgang Bauer

 

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