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4022B

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ID = 61615
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Developer: Standard Telephones and Cables Ltd. (STC); London, Foots Cray 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 4022B
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Telephony
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Specified voltage AND current AC/DC
Description

Telephone repeater tube

 
Dimensions (WHD)
incl. pins / tip		 x 116 x 57 mm / x 4.57 x 2.24 inch
Weight 65 g / 2.29 oz
Information source - - Manufacturers Literature   
Tube Tester Data Avo CT160
b4~~4.png 4022B: Fin Stewart
Fin Stewart

Just Qvigstad
 
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