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DC/SG

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ID = 12655
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to DC/SG
First year 07.Jan.1931 The Wireless World, London (WW, 79) Announced p5.

Base Europe 5-Pin (O5A, B5) Top contact screw type
Filament Vf 6 Volts / If 0.5 Ampere / Indirect / Series, DC
Description First British tube series for dc mains use.

The first announcement gave the heater voltage as 4. 

Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 

Usage in Models 1= 1930

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

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