The WISM FM callsign was first used in 1959 in Madison at 98.1 FM. [3] On December 1, 1983, WISM became changed its callsign to WMGN. [4]
Eventually, the Federal Communications Commission (FCC) controlled and licensed station call lettered were acquired by Alpenglow Communications, which relaunched WISM-FM in November 1991 with a classic rock format. [5]
The station was sold again in 2016 to Mid-West Family Broadcasting for $970,000.[7]
On July 1, 2016, coincident with the sale to Mid-West Family Broadcasting being consummated, WISM-FM changed its format from adult contemporary to classic hits, branded as "Greatest Hits 98.1". The specific programming was transferred from WDRK, upon that station's donation from Mid-West Family Broadcasting to Blugold Radio LLC.