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ID = 28809
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Power/Output 
  <1925 very rare. ***
Identical to T_Pliotron = VT-14 = CG-1162

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Military and/or Government
Filament Vf 7.5 Volts / If 1.75 Ampere / Direct / Battery =

40 mA at 350 V. As an oscillator 5 Watt output power.
Sibley gives 15W output power for 'T_Pliotron'/VT-12 later evolved in VT-14. But at a total dissipated power of ony 14 Watt Sibley obviouslyly confused that with the output power of 5 Watt (as an oscillator).
This tube was originally used by the U S Navy as a low power oscillator for small radiotelegraph and telephone sets on submarine chasers and aircraft transmitters. First designated VT-12 by the US Signal Corps, changes were made to the filament design and the tube was redesignated VT-14.

The revised tube was designated CG1162 by the US Navy. 
Dimensions (WHD)
incl. pins / tip
44 x 106 x 35 mm / 1.73 x 4.17 x 1.38 inch
Tube prices 1 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   page 149, 150 & 151
Tube Lore (I)   
T_Pliotron: own collection
Peter den Boer

T_Pliotron: Fin Stewart
Fin Stewart


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