Licensed to Indiantown, Florida, the station serves the Treasure Coast and Palm Beach County area.

The 103.1 frequency began in Okeechobee in mid-1966 as WLMC, the FM counterpart to the town's established AM station, WOKC.

In 1992, Okeechobee Broadcasters was approved to move the station to its present tower near Hobe Sound, changing the city of license to Indiantown and making WOKC-FM a move-in into the West Palm Beach market; previously, the WOKC stations did not meet requirements to be reported by Arbitron in the West Palm Beach or Fort Pierce markets.

[5] While initial rumors had the station remaining country as "The Frog" to complement WKGR's "Gator" imaging,[6] Amaturo completed the move-in and relaunched 103.1 as WPBZ, named for (and using) the Z Rock syndicated service from Satellite Music Networks.

[8] Callahan's involvement came about because Steve Dodge, the chairman of American Radio Systems, was a director of the parent company of the Enquirer.

[13] ARS dissolved its joint sales agreement to operate WPBZ on October 31, 1996, citing a "changing regulatory climate".

[23] On September 27, 2018, Alpha Media announced the sale of its West Palm Beach stations to Hubbard Broadcasting.

Specialty music shows included Buzz Junior, which aired Sunday nights at 10:00pm with host Jeremy Steve Clark and featured new music, unsigned local bands, indie bands, and classic songs; and Rock Hard Buzz, which aired Saturday nights at 11:00pm with host Metal Mick and featured mostly heavy metal.