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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 1930 Wireless World (The), London (WW, 79) Pye Twintriple DC4D from 1930
First Source (s)
07.Jan.1931 : Wireless World (The), London (WW, 79) Announced page 5

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact screw type.
Filament Vf 6 Volts / If 0.5 Ampere / Indirect / Specified current DC = (Series working)
Description

First British tube series for dc mains use.

The first announcement gave the heater voltage as 4.

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


Just Qvigstad
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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