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210SPG

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ID = 8607
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  HEPTODE   Frequency converter   Controlling (mu) 
Identical to 210SPG
First Source (s)
1936 : History of the British Radio Valve to 1940 p.198

Base British-7-Pin, old (M7A) (Codex=Nt) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   p. 28 & 29

555_1.png 210SPG: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
Usage in Models 1= 1936 ; 2= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
 

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