It airs a sports radio format and is owned by South Carolina State University, a historically black institution.
It largely airs programming from ESPN Radio, with some South Carolina-based sports shows.
But because 1580 AM is a Canadian clear channel frequency, WPJK must greatly reduce power at night to 22 watts to avoid interference to other stations.
On September 9, 1985 the station changed its call sign to WBLO, and on February 17, 1986 to the current WPJK.
[7] On April 17, 2017, WPJK filed an application with the Federal Communications Commission to transfer the license from Ermma Barton Gowdy to South Carolina State University.