[2] Programming is also heard on 250 watt FM translator K239CK at 95.7 MHz in nearby Elk Grove, California.

Throughout its early years, KROY had been host to a number of formats, dating back to the "swing era."

The Federal Communications Commission approved the application in July 1936,[5] and KROY signed on March 15, 1937, with Governor Frank F. Merriam delivering the first words over the new station, originally at 1210 kHz.

[6] KROY was initially a 100-watt, daytime-only station,[5] broadcasting from studios on the mezzanine level of the Hotel Sacramento.

[5] In June 1959, John T. Carey bought KROY and an associated FM construction permit for 102.5 MHz,[13] which would never be built, for $390,000.

Morning drive personalities in the 1960s included Gary Owens, Don MacKinnon, and Robert W. Morgan.

[5] In 1975, Atlantic States acquired EZ Communications's KEZS (96.9 FM); to indicate its new sister station, the call letters were changed to KROI.

[20] In January 1981, KROY shifted to adult rock, seeking to capture the aging baby boomer audience.

For more than a month, beginning on February 12, 2008, there were mild rumors that KSAC would switch from progressive talk to gospel.

However, it was announced on August 25, 2010 that it had filed papers to change the status of KRJY from commercial to non-commercial and assign the license to a non-profit version of Diamond Broadcasting.

Upon transfer of ownership, the station signed back on at full power at the original transmitting site, and began airing Spanish-language Catholic programming.