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CV489

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ID = 30675
       
Country:
Great Britain (UK)
Brand: GEC, General Electric Co Ltd., GENALEX; London
Tube type:  Thyratron 
Identical to CV489 = BT75

Base UX-Base (4 Pins (2 thick, USA 1924, UX) 2 Sidecontacts.
Was used by Military and/or Government
Filament Vf 2.5 Volts / If 11 Ampere / Indirect
Description

"Gas Modulator". 4-pin jumbo base plus two side screw terminals for filament. Looking at the base measurements for this tube, in the Admiralty Signal and Radar Establishment page for this tube, It appears that the tube base pins have the American "UX" configuration and size. Also the valveholder note (C) confirms this - VHUX432
Xenon Thyratron for use in radar modulator circuits. 

Base pins 1 cathode (connected to middle of filament); 2 grid; 3 anode; 4 screen grid

 
Dimensions (WHD)
incl. pins / tip
77 x 175 x 52 mm / 3.03 x 6.89 x 2.05 inch
Information source -- Original-techn. papers.   


Just Qvigstad
cv489_1.png
CV489: Manufacturer's Literature
Emilio Ciardiello

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