WKDU 91.7 FM is a non-commercial, student-run radio station licensed to Drexel University in Philadelphia, Pennsylvania. Established in 1971, it features a freeform format, allowing DJs to curate diverse programming spanning genres like punk, hip-hop, electronic, jazz, and more. WKDU operates as a nonprofit organization and is known for supporting local and underground music scenes. The station regularly hosts events, such as its annual Electronic Music Marathon, to raise funds for charitable causes.