KDLD is a commercial FM radio station in Santa Monica, California, broadcasting to the Greater Los Angeles area on 103.1 MHz.

KDLE is a commercial FM radio station in Newport Beach, California, broadcasting to the Orange County area on 103.1 MHz.

KDLD and KDLE simulcast a Mexican cumbia music format branded as "Viva 103.1" on their analog and main HD Radio signals.

Prior to 1991, the 103.1 frequencies in Los Angeles and Orange County operated as two separate stations, KSRF in Santa Monica and KOCM in Newport Beach.

[7][8] It was located in the lobby of King Neptune's Kingdom at Pacific Ocean Park, and featured brightly hued plastic panels, illuminated by changing lights.

[11][10] In 1965, the station was sold to the Santa Monica Broadcasting Company for $135,000, with controlling interest owned by George Baron, who had been general manager of KSRF since its founding.

[3] Success Broadcasting acquired KNBB for $34,750 in 1964 and changed its call letters to KOCM (later said to stand for "Orange County Music"[19]) on January 28 of that year.

In 1991, Ken Roberts, former owner of KROQ-FM, bought KSRF and KOCM for $17.8 million and immediately expressed his desire to convert the two stations, which interfered with each other, into a simulcast.

Stan Salek at Hammett and Edison of San Francisco published a paper at the 1992 National Association of Broadcasters convention on the case study for synchronization of KSRF and KOCM.

[41][42][43] At 5 p.m. on October 19, 1998, the simulcast ended and the station adopted an adult album alternative (AAA) format, programmed by Nicole Sandler.

[45][44] Program director Nicole Sandler was also afternoon DJ and Andy Chanley, previously with KLYY (Y107), handled the morning shift.

[46][47] In 2000, after Clear Channel merged with AMFM, the company would own too many stations in the Los Angeles area, according to Federal Communications Commission rules.

[51] "Channel 103.1" also began to air on AM 850 KACD in Thousand Oaks, California, primarily for the purposes of music-licensing, and to keep the station listed in Arbitron.

[55][56] In January 2003, Entravision moved the "Super Estrella" format to the newly acquired 107.1 signals from Big City Radio, which today use the call letters KSSE/KSSC/KSSD.

[60] On February 10, 2004, at Noon, the first live DJ appeared on "Indie 103.1": Steve Jones — guitarist, songwriter, and founding member of the Sex Pistols.

His program, Jonesy's Jukebox, became famous for its freeform music and Jones' unorthodox delivery style which included long pauses, belches, and the frequent whistling of songs.

Within its first year, "Indie" (as it came to be known) was airing live original programs hosted by Rob Zombie, Henry Rollins, The Crystal Method, Christian B and Dave Navarro.

Indie 103.1 quickly grew in popularity among listeners around the Los Angeles area and around the world, although due to limited signal range it was never a ratings winner.

The show also featured a weekly wine tasting and education hour called "Wino Wednesday", and hosted a number of celebrity guests including Crispin Glover, Christina Ricci, Pat Buchanan, Will Ferrell, Maynard James Keenan, Werner Herzog, Phil Donahue, Kristen Stewart, Harry Shearer, Dennis Hopper, and Andy Dick.

[70][71][72] At 10 a.m. that day, after departing station personalities bade farewell to listeners, "Indie" signed off with versions of "My Way" by both Frank Sinatra and Sid Vicious.

On January 8, 2018, KDLD and KDLE dropped Spanish adult hits and reverted to the regional Mexican format as "La Tricolor".