KMOX is an AM radio station broadcasting in St. Louis, Missouri. It is a 50 kW clear channel radio station assigned to frequency 1120kHz. KMOX operates as "Newstalk 1120".
KMOX is currently owned by Infinity Broadcasting. KMOX's transmitter is located in Pontoon Beach, Illinois.
History
KMOX began operating in 1925. The call letters KMOX are said to represent Missouri (MO) and the fact that the station began operating on Christmas Eve 1925 (X-mas). In the station's first broadcast, the mayor of Kirkwood, Missouri, where the station's transmitter was located, called the station "St. Louis' Xmas Gift to the World". In 1927, it was one of the sixteen original stations in the CBS network. CBS eventually bought KMOX.
For many years, KMOX broadcast using C-QUAM AM stereo, but stereo transmissions ended in the spring of 2000.
The former KMOX-FM 103.3MHz, now operates as KLOU
The former KMOX-TV channel 4, now operates as KMOV
KMOX was incorporated in 1925 as The Voice of St. Louis Inc. According to the station's official website, the "KMOX" call letters were randomly assigned by the Federal Radio Commission, according to the station's website.
KMOX lost broadcasting rights in 1948 when a new Cardinals radio network was formed by the team, but by the 1950s, it became the flagship station of that network (in part due to its clear channel status).
It was Hyland who emphasized and leveraged KMOX's relationship with the Cardinals; he also made the decision in 1960 to eliminate the station's afternoon music programming in favor of talk radio, a critical change which led to the station's subsequent dominance of the St. Louis radio market.