Operating Features Of The Audion

This essay first appeared in the Journal of the New York Academy of Sciences in 1917, and is now reprinted as a 32-page illustrated pamphlet. Major Armstrong was the inventor of the superheterodyne circuit, FM broadcasting, and dozens of other modern engineering designs. Included is the very first authoritative report on the triode vacuum tube's capabilities.

1993, 1917, 32pp., 6" x 9", softbound

For maximum performance and longevity, vacuum tubes should always be stored and transported in a safe and secure fashion. The TubeCube and the TubeCube Pro provide a customizable shock-resistant environment for your tubes and helps prevent them from becoming microphonic or damaged.

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Operating Features Of The Audion