WJMX-FM (103.3 MHz), also known as "103X", is a top 40 (CHR) station located in the Florence, South Carolina, radio market.

The station is licensed by the Federal Communications Commission (FCC) to the town of Cheraw, South Carolina, and broadcasts with an effective radiated power (ERP) of 50 kW.

Eventually, WPDZ got a construction permit to increase its power to 50 kW, with a frequency change to 103.3, but the station went into bankruptcy by 1987 before it could be acted upon.

In November of that year, WJMX spun off its 106.3 signal to Urban Contemporary outlet, WYNN-FM, while the 103.3 frequency became "103X", the CHR format (with more classic hits in the late 1980s).

[3] On May 15, 2014, Qantum Communications announced that it would sell its 29 stations, including WJMX-FM, to Clear Channel Communications (now iHeartMedia), in a transaction connected to Clear Channel's sale of WALK AM-FM in Patchogue, New York, to Connoisseur Media via Qantum.