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ACT22

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ID = 28245
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Developer: MO Valve Co. Ltd.; GB 
Tube type:  Transmitting Triode, air cooled   Text 
Identical to ACT22 = CV257
Similar Tubes
Normally replaceable-slightly different:
  E1457
Other characteristic (electr. data):
  CV6055

Base SPECIAL TUBEBASE in general
Was used by Military and/or Government
Filament Vf 6.3 Volts / If 4 Ampere / Indirect / Specified voltage AC/DC
Description

Originally designed for radar use as a localoscillator in radar receivers but were also used in early television as relay amplifiers iand transmitters.

<1200MHz, Va<600, Gm=20

 
Information source -- Original-techn. papers.   
The Saga of Marconi Osram Valve   p. 272

 

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