WMUM-TV digital channel 7 (formerly on analog channel 29, originally on channel 15), part of the GPB network is the tenth and last Public Broadcasting Service (PBS) member Public television station established in the state of Georgia. WMUM serves the geographical center of the state of Georgia, including the city of Macon from its transmitter in Cochran, its city of license. The station's signal travels in about a 40-mile (65 km) radius from the transmitter site.
WMUM began broadcasting digitally on channel 7 in April 2008, and ceased analog the following February 17 along with the rest of GPB TV.
WMUM-TV signed on January 1, 1968 on channel 15 as WDCO-TV. 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. This was the only time prior to the 2009 digital conversion that a GPB station swapped channels. In the summer of 2006, the station changed its call sign to WMUM-TV, named after Mercer University in Macon. The name change reflects Mercer's involvement in GPB's operations in the Macon market, especially in the field of radio (see WMUM-FM).