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National Association of Broadcasters
American Top 40 with Casey Kasem Launches (July 4, 1970)
July 4, 1970

American Top 40 with Casey Kasem Launches

Casey Kasem’s “American Top 40” premiered on July 4, 1970, on only four stations. Over the next 50 years, Kasem became a household name, Top 40 became one of the country’s most popular radio formats and hundreds of stations all over the United States broadcast the show weekly.

November 2, 2020 marks the 100th anniversary of the first commercial radio broadcast. To celebrate this special anniversary, we’re shining a spotlight on 100 key moments in radio's history.

We hope you’ll join us in celebrating your favorite radio memories throughout 2020. Use the hashtag #Radio100 across social media to share these moments with the world. Here’s to 100 wonderful years of radio, and to at least 100 more!

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