WMUM-FM, a radio station (89.7 FM) licensed to Cochran, Georgia, United States, which held the call sign WDCO-FM from 1983 to 2006
WMUM-FM, a radio station broadcasting on FM 89.7 (formerly WDCO-FM)
WMUM-TV, a television station (channel 7) licensed to Cochran, Georgia, United States, which held the call signs WDCO or WDCO-TV until 2006
WRMF, an FM station in Palm Beach, Florida, which used the call letters WMUM until 1973
In 1990, the station changed its UHF frequency from channel 15 to channel 29, so as to avoid interference to a Department of Defense early warning ballistic missile detection facility located at the Warner Robins Air Force Base.