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ID = 28444
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   Audio Frequency 
Identical to CG-890 = G_Pliotron
Similar Tubes
Normally replaceable-slightly different:
Other base:
First year 1918 ?? Saga of the Vacuum Tube, Tyne Seite 148
Predecessor Tubes VT-11  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Military and/or Government
Filament Vf 3.3 Volts / If 1.1 Ampere / Direct / Battery =
Description When first developed for the US Navy this tube had the old style Navy standard 3 pin base and was known as the CG886. Later this was changed to the UV type base and given the CG890 type number. The tube was very useful in radio frequency amplifiers In transmitting, if an anode voltage of 750 was applied, the tube was capable of 10 watts output. 
Dimensions (WHD)
incl. pins / tip
x 105 x 45 mm / x 4.13 x 1.77 inch
Tube prices 1 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   Pages 148 & 149
CG-890: collection personnelle
Marc Couque

CG-890: Fin Stewart
Fin Stewart


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