The station started broadcasting on April 19, 1941, as the , under the callsign
JOUG. Radio 2 (JOUC) started broadcasting on June 1, 1951, and NHK FM on April 1, 1964. Television broadcasts began on June 15, 1959. On April 14, 1962, the station was renamed NHK Yamaguchi Broadcasting Station due to the relocation to the
prefectural capital. By 2008, NHK Yamaguchi was doing a news exchange with its Korean sister station.
NHK+ added Yamaguchi programming on May 22, 2023. ==Programming==