Summary

Alternative Name(s): Thermionic Electron Valve

General purpose triode electronic valve, designed for amateur use. This valve is equivalent to the American type UV199. It had a 3.0 Volt directly heated cathode.
Manufactured by Philips, in Holland, circa 1925.

Physical Description

Tubular glass bulb on small diameter (UV199 style) 4 pin base with metal shell.

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