Kino Lorber has acquired all North American rights to “Radio Unnameable,” a documentary about radio personality Bob Fass.

His Radio Unnameable first aired in 1963 on New York WBAI with a focus on cultural issues, politics and audience participation. Guests included Arlo Guthrie, Allen Ginsberg, Kinky Friedman, Abbie Hoffman, Bob Dylan and Carly Simon — several of whom are seen in this documentary.

The show usually aired from midnight to 5 a.m. Fass utilized the airwaves for mobilization, encouraging luminaries and ordinary listeners to talk openly.

The doc will have its North American theatrical premiere at New York’s Film Forum on Sept. 19 and expand to other cities in the U.S. and Canada in the following months.

Directors are Paul Lovelace (“The Holy Modal Rounders… Bound to Lose”) and Jessica Wolfson. Pic draws extensively from Fass’ archive of audio, film, photographs and video of events such as his participation in the anti-war protests of the 1960s and ’70s.

Kino Lorber’s CEO Richard Lorber negotiated the deal with attorney George Rush, representing the filmmakers.