Make your own vacuum tubes. Easy--if you have the special tooling.
January 4, 2008 11:11 AM Subscribe
Making your own transistor is probably beyond the abilities of a dedicated hobbyist. However, making simple triode vacuum tubes is practical. Many hobbyists have done so over the years. In this video, French ham-radio operator Claude Paillard shows you how. HIs model is the WWI-era type TM of 1915. (and btw, 2007 was the 100th anniversary of electronics, since de Forest made his first vacuum tube in 1907.)
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