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SG215A

Information - Help 
ID = 50856
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to SG215A
First Source (s)
21.Nov.1931 : Ad in Popular Wireless
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.15 Ampere
Description

Metalised.

 
Information source - - Manufacturers Literature   

b4_tetrode~~19.gif SG215A: Fin Stewart
Fin Stewart


Just Qvigstad
sg215_215a~~1.png
SG215A: own collection
Peter den Boer

Usage in Models 1= 1933

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

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