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20D1

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ID = 37112
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Double Diode   Detector 
Identical to 20D1
Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 9.5 Volts / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Description Vin <175 rms; Ia <9mA mean. 
Information source - - -   
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Just Qvigstad 		20d1_data.png
20D1: Ediswan-Mazda Data Book 1956-57
Anonymous 15 Collector
Usage in Models 2= 1949 ; 1= 1950 ; 6= 1951 ; 5= 1952 ; 15= 1953 ; 7= 1954 ; 2= 1955
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):38

Collection of

Frank Cuffe (IRL)
 
a_20d1.jpg

 
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