Ante Vukorepa draws our attention to this video of Claude Paillard, a French radio amateur (F2FO), making his own tubes (also known as thermionic valves) from scratch. “The video depicts the whole process, from winding the filament through making the glassware, assembly and vacuuming, to testing. Pretty awesome!”
For more information on Claude’s activities as well as links to articles on vintage radio topics, go to Claude’s website. (In French; if English is needed, click on the Google translate link at the top of Claude’s webpage.)
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