")[citation needed] The original format consisted of music, mainly middle-of-the-road (MOR), adult contemporary and rock 'n roll oldies selections, with local news and information.
The station made a name for itself with its coverage of an explosion at the Linden, New Jersey Bayway Refinery just after 11 PM Saturday December 5, 1970,[citation needed] which had area residents fearing for their lives much of the next day.
[2] While the Federal Communications Commission (FCC) was still making U.S. preparations to populate the additional frequencies, known as the AM expanded band, a provision was added to the Communications Act of 1934 in late 1991 which mandated that priority for assignments would be given to existing daytime-only stations that were located in a community with a population over 100,000, and which also did not have any full-time stations.
[3] Taking advantage of this provision, on December 8, 1995, WJDM became first station in the country to begin regular broadcasting on the expanded band, assigned to 1660 kHz.
[6] A construction permit for the expanded band station was assigned the call letters WBAH on May 11, 1998, which were changed to WWRU on February 15, 1999.