104.3 FM WJMK, the Chicago radio personality's contract with CBS expires Friday, freeing him for a possible return to the airwaves.
According to a story by Robert Channick, at The Chicago Tribune, Dahl promises to announce his plans via Twitter at noon Monday.
"By this time next week you will know what my new career plan will be!" Dahl tweeted Tuesday.
The pioneering broadcaster turned podcaster exited WJMK-FM more than 2 1/2 years ago after a failed marriage between the irreverent morning man and the jockless, iPod shuffle-like music format. Jack FM was shelved locally in March for K-Hits, an adult hits format replete with live air personalities.
Paid more than $1 million annually to stay off the air, Dahl launched a daily 90-minute podcast from his basement in 2009. Some 7 million shows have been downloaded, according to the website.
After starting out at radio stations in California and Detroit, the 30-year-veteran has spent most of his career in Chicago, breaking new ground with his on-air radio verite and at least one infamous promotion. His resume includes logging lengthy airtime at The Loop — both WLUP-AM and FM — WLS-AM and FM and WCKG. Dahl may be best known for 1979's Disco Demolition Night at Comiskey Park, where the symbolic torching of disco records proved incendiary to an overflow crowd of rock fans, causing a riot and forcing the White Sox to forfeit the second half of a doubleheader to the Detroit Tigers.