http://kdkaradio.com/history.shtml

http://www.wwj.com/stationinfo.asp

KDKA claims to be the "first radio license ever" issued 10/27/20, but, the first
official record of the station appeared 08/01/16 as 8XK. WWJ went on the air
8/20/20 as 8MK as the first commercial radio station.

John Steffes wrote:
I believe the first commercial radio station in the U.S. was KDKA in
Pittsburg, Pennsyvania. For years there was a big debate as to whether
WWJ in Detroit, Michigan or KDKA was the first to broadcast.

John

Lelannie wrote:

Hello,
I was wondering if anyone knows where the first radio station in
the u.s was located? Maybe even where the first radio station was?
Thanks for your time and help it's greatly appreciated.