 The station is also broadcast in the HD Radio format.This station was the radio dream of WLS Radio announcer, emcee, and engineer Russ Salter, who put this station (then WKKD-FM); along with WKKD AM 1580 on the air.WKKD 1580 debuted on September 21, 1960 and WKKD-FM on February 12, 1961.