Like most early FM stations, WHK-FM mostly simulcast the Top 40 programming of its AM sister station.In 1966, in an effort to make the medium more commercially viable, the U. Federal Communications Commission (FCC) mandated that FM stations could no longer duplicate the programming of their AM sister stations.
Widely regarded as one of the most influential rock stations in America throughout its history, Owned by i Heart Media, Inc., and broadcasting a mix of active rock and hot talk, WMMS serves as the flagship station for Rover's Morning Glory, the Cleveland affiliate for The House of Hair with Dee Snider, and the home of radio personality Alan Cox.
The station also serves as the FM flagship for the Cleveland Cavaliers and Cleveland Indians radio networks.
Besides a standard analog transmission, WMMS broadcasts over two HD Radio channels, and is available online via i Heart Radio.
The HD2 digital subchannel, which airs alternative rock under the brand 99X, serves as the local affiliate for Sixx Sense with Nikki Sixx, and shares limited local coverage of the Lake Erie Monsters.
WMMS-HD2 also simulcasts over Cleveland translator W256BT (99.1 FM).
The WMMS studios are located at the former Centerior Energy building in the Cleveland suburb of Independence, while the station transmitter resides in neighboring Seven Hills.
The WMMS call letters first referred to an owner – "Metro Media Stereo" – but have since taken on a variety of other meanings.
Considered "a true radio legend," WMMS DJ Kid Leo was chosen for Rolling Stone's "Heavy Hundred: The High and Mighty of the Music Industry" (1980) and named "The Best Disc Jockey in the Country" in a special 1987 issue of Playboy.
Seven years later, members of the station's staff and management pleaded guilty to disrupting a national broadcast of The Howard Stern Show that originated via the local Stern affiliate, cross-town rival WNCX.
A federal offense, the act nearly cost WMMS its broadcasting license.
radio station WHK – owned at that time by United Broadcasting Company, a subsidiary of Forest City Publishing, itself the parent company of The Plain Dealer – launched an experimental FM station under the callsign W8XUB at 107.1 megahertz (MHz).