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ID = 20416
Great Britain (UK)
Brand: Ferranti, GB
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to VPT4
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
11.Aug.1933 : Wireless World (The), London (WW, 79) p 107

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact with a cap.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
VPT4: By courtesy of guest John Barber, Bridgend, Wales, UK.
Ernst Erb


from Just Qvigstad

Usage in Models 5= 1933 ; 4= 1934 ; 4= 1935 ; 6= 1936 ; 5= 1937

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):24

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