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Information - Help 
ID = 25640
United States of America (USA)
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   Power/Output 
Identical to X245 = P245 = UX245 = GSX245 = RayX-245 = 245 = 145 = CX345 = 45
Similar Tubes
Normally replaceable-slightly different:

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.5 Ampere / Direct / Specified voltage AC/DC

Tyne lists about 250 US brands for vacuum tubes in "The Saga of the Vacuum Tube" but not Star-Ko. Since Star-Ko praises that the tube was produced "in tremendous quantities" and sells the X245 for $ 1.69 in quantities with a list price of $ 3.50 we think that Star-Ko bought tubes with lower quality from a big tube maker to sell them off. Or they could sell at a time where the tube was already obsolete. See also Y-224. Found in the "Neonlite" brand also. No information available. 

Dimensions (WHD)
incl. pins / tip
x 137 x 54 mm / x 5.39 x 2.13 inch
Weight 67 g / 2.36 oz

x.245_so.png X245: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
X245: Vitor Oliveira
Ernst Erb



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