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ID = 19924
Great Britain (UK)
Brand: Ferranti, GB
Tube type:  Full-Wave Vacuum Rectifier 
Identical to R52 = 5Y3G
Similar Tubes
Other base:

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 5 Volts / If 2 Ampere / Direct
Description Trafospannung: 350 V, Entnahmestrom: 120 mA 

r52_so.png R52: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
R52: Babani 1949-1951
Patrice Zeissloff

Usage in Models 2= 1946 ; 5= 1947 ; 2= 1948 ; 2= 1949 ; 5= 1950

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):16

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