It was on this date in 1926 that KSOO radio signed on the air from the Carpenter Hotel.

The next time you're downtown, check out the historical marker commemorating the event.

KSOO was not the first radio station in Sioux Falls, however.

In 1922, WFAT began broadcasting from the Williams Piano Company building in downtown.

KSOO signed on four years later - and the rest as they say is history.