During the 1930s and 1945 WLIM was a NBC Blue Network affiliate carrying shows, and News, during a Golden Age of Radio.
In January 1976, WILM switched to an all-news format, using the short-lived NIS (News and Information Service), operated by NBC.
A former program director said the decision was made due to incompatibilities with sales and audience demand but has since acknowledged the station chose not to pay increased carriage fees.
During this period, another Wilmington station with a stronger signal, WDEL also adopted a full-time news and talk format, beginning direct competition with WILM, including picking up Rush Limbaugh's program.
Mike Gallagher's syndicated show joined local host John Watson on the station's daily schedule.
An evening hour featured a cavalcade of amateur talk radio hosts; most were members of the Wilmington-area community.