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ID = 18970
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode 
Identical to PL38
Similar Tubes
Heater different:

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 30 Volts / If 0.3 Ampere / Indirect / Series, AC/DC
Description Line time-base valve. Also available as the PL38M which is metallised with the coating connected to pin 3. 
Text in other languages (may differ)
Literature - - Manufacturers Literature   
PL38: Frank Cuffe
Frank Cuffe

PL38: RTT Schwandt
Günther Stabe

PL38: Manufacturer's Literature
Emilio Ciardiello

Usage in Models 1= 1948 ; 9= 1949 ; 1= 1950? ; 13= 1950 ; 1= 1951? ; 12= 1951 ; 1= 1952? ; 7= 1952

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):45

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