First signing on as KNBB in 1999, the station originally had an adult contemporary music format from 1999 to 2005 and broadcast Louisiana Tech University baseball and women's basketball.

[2] Communications Capital Managers LLC purchased KNBB, KRUS, and KXKZ from Ruston Broadcasting for a combined $2.97 million in August 2001.

[8][9] In May 2005, KNBB changed to a sports format branded "ESPN Radio 99.3" featuring local sports talk, the ESPN Radio national network, Louisiana Tech baseball, and Grambling State University football.

[13] In addition to music, KPCH continued to broadcast local high school sports and Grambling State football.

On Sunday nights, KPCH broadcasts America's Greatest Hits, a program hosted by Scott Shannon nationally syndicated by United Stations Radio Networks.