The station began in 1967 as an FM sister to station WRBC and was owned by the Rebel Broadcasting Company. Most of the disc jockeys who were on WRBC took shifts on the FM station, and hosting a shift on the FM station was used to test new talent for WRBC.
Among the more famous voices to be heard on WJMI were Bob Pittman (founder of MTV), Walt Grayson (later a television weatherperson for two Jackson television stations), and Mary Lewis.
The station then broadcast from 7a.m. until midnight. It was affiliated with the ABC-FM news network and broadcast the news each hour at fifteen minutes past the hour with local news following.
WJMI was one of the first stations to employ female disc jockeys.[citation needed]
There were occasionally contests for concerts (such as the 1971 State Fair appearance of actor-singer Bobby Sherman).
On April 1, 1973, WJMI was sold to new owners, who then flipped into a CHR/Urban Contemporary format (also known as "CHUrban", which was the forerunner to what could become the rhythmic contemporary format) as "Jackson's JMI 100 FM". Over time, WJMI would evolve into its current Mainstream Urban format as "99 Jams".
References
^"WJMI FM Stereo". Clarion-Ledger. July 29, 1967. p. 11. Retrieved June 15, 2020.