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4019A

Information - Help 
ID = 28975
       
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   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to 4019A = 4609 = SY4019A = S4019B = VT72_GPO = CV249
Similar Tubes
Heater different:
  4101D
Other base:
  4019B ; S4019A

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Technology / Measurement
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Parallel, (AC/DC)
Description

Telephone repeater tube designed for DC series or parallel supply. Anode volts 130.

 
Dimensions (WHD)
incl. pins / tip
57 x 114 x mm / 2.24 x 4.49 x inch
Weight 65 g / 2.29 oz
Literature Saga of the Vacuum Tube, Tyne   page 369
- - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
 
4019a_side.jpg
4019A: From my collection
Gary Cowans

 
4019a_so.png
4019A: ARRL Handbook 1972
Michael Schlör

 


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