[8] In 1959, KPOL advertised on a billboard at Los Angeles's Wrigley Field, which can be seen in the television series Home Run Derby.

[15] In 1979, the station's call sign was changed to KZLA while airing a more upbeat adult contemporary format, simulcast with 93.9 KZLA-FM.

[18] In December 1984, the station's call sign was changed to KSKQ, and it adopted a Spanish language format as "La Super KQ".

On August 4, 1992, its call sign was changed to KXED, and it aired a Mexican pop/contemporary format branded "La Grande" or The Big One.

On February 10, 2003, the station began to be branded "1540 The Ticket", concurrent with the launch of a new local morning show, hosted by Roger Lodge.

In 2006, KMPC lost the broadcast rights to University of Southern California Trojans basketball and football to rival 710 KSPN.

KMPC acquired the local broadcast rights of the University of Notre Dame's football games from Westwood One.

The station's regular talk-show hosts included Tony Bruno, who began his morning show in April 2005 following the departure of Roger Lodge;[30][29] Dave Smith,[29][31] Fred Roggin,[32][33] and former USC football player Petros Papadakis.

[38] On September 5, 2006, it was announced that Sporting News Radio would be sold to American City Business Journals for an undisclosed price.

[29][36] In 2007, the station was sold to P&Y Broadcasting for $33 million, and it began to air Korean language programming as "Radio Korea".

[41][42][43] In April 2013, KMPC began airing Korean language broadcasts of Los Angeles Dodgers baseball games.