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15D1

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ID = 8593
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old)   Controlling (mu) 
Identical to 15D1
Similar Tubes
Heater different:
  15D2
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base British-7-Pin, old (M7A) (Codex=Ne)
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Information source History of the British Radio Valve to 1940   p. 144 & 198
Wireless World (The), London (WW, 79)   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

165_2.png 15D1: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
Usage in Models 6= 1934 ; 1= 1935? ; 6= 1935 ; 9= 1936? ; 2= 1936 ; 5= 1937 ; 2= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):31

Collection of

 
brimar_15d1.jpg

15D1
 

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