Author and historian Dave Coopman joins the "ROI" team to discuss the 100th anniversary of broadcast radio in the United States for the 375th installment of this series.Relevant or Irrelevant is recorded at the studios of KALA-FM, Davenport, IA-Quad Cities.

BONUS: The 100th Anniversary of Broadcast Radio

In this weekly show, hosts John Kealey and Jay Swords examine events of history through the discussion of books, journal articles, papers, and presentations, then historians and history buffs ask the question, what is relevant or irrelevant in today’s world.

For more than a decade, this show has aired over-the-air on KALA-FM in the Quad Cities. Now, we're bringing it here to make listening easier than ever!