KHJ (AM)

93 KHJ Radio in Los Angeles, California was one of America's most formidable Top 40 radio stations in the 1960s and 1970s.

Originally part of the Don Lee CBS Network, it eventually came under the ownership of RKO General. During the 1960s, programmer Bill Drake was brought in as a consultant. He created a very tight sound built on a restrictive playlist, and tight controls on what was said by the announcers (although a few superstar announcers, such as Robert W. Morgan and The Real Don Steele were allowed to show their personalities. Also part of the format, which came to be known as "Boss Radio" (in the parlance of the times, the word "boss" was used as a synonym for "cool"), was a package of memorable jingles performed by the Johnny Mann Singers.

The format brought high ratings to the station through the late 1970s until FM radio became the dominant way to broadcast popular music. RKO General encountered difficult challenges to their radio and television licenses and was ultimately forced by the FCC to sell off their broadcast properties. KHJ signed off the air as such in January 1986, the station flipping its call letters to that of its FM sister station, KRTH, which it retained until RKO sold off its properties. The station exists today as a Spanish-language station. In 2000, the FCC granted a rare return to original three-letter call sign, KHJ.

The call letters KHJ stood for "Kindness, Happiness, and Joy," the slogan of the station's original owners in the 1920s.

The KHJ call letters were also used for an FM station KHJ-FM (now KRTH-FM, aka "K-Earth 101" at 101.1 MHz) and a television station KHJ-TV (now KCAL-TV channel 9).