Spark-gap transmitter

Rarity: Common

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At a glance

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Notion

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Science and technology

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What Wikipedia says

A spark-gap transmitter is an obsolete type of radio transmitter which generates radio waves by means of an electric spark.

Excerpt from the Wikipedia article “Spark-gap transmitter”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Bernard John Leggett, Public domain, via Wikimedia Commons.