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20P1

Information - Help 
ID = 32185
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Developer: Mazda = Valve (Tube) brand GB (see also France) 
Tube type:  Gated-beam-tube   beam power   Power/Output 
Identical to 20P1
Similar Tubes
Other characteristic (electr. data):
  20P4

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 38 Volts / If 0.2 Ampere / Indirect / Series, ~ = (AC/DC defined current)
Description TV Line Scan or pulse operation. Pa <15W; Va <400 or 6000 peak. 
Information source - - Data from my own collection   
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20p1_mazda_a.jpg
20P1: RFJ
Roy Johnson

 

from Just Qvigstad

Usage in Models 2= 1949 ; 1= 1950 ; 5= 1951 ; 5= 1952 ; 9= 1953 ; 1= 1954

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):23



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