changed to KKHI, and the station again simulcast the classical music programming of KKHI-FM. On December 5, 1998, the station's call sign was changed to KJQI, and the station began airing an adult standards format as "the Joy of San Francisco". On February 28, 2000, the station's call sign was changed to KMZT, and the station aired a classical music format as K-Mozart. On March 19, 2001, the station's call sign was changed to KJQI, and the station aired a Christian format as "K-Joy". On March 25, 2002, the station's call sign was changed to KJAZ, and on August 15, 2002, the station's call sign was changed to KTIM. As KTIM the station aired a country music format. On June 28, 2003, the station's call sign was changed to KMZT, and the station again aired a classical music format as K-Mozart. In 2003, Mt. Wilson Broadcasters moved the transmitter from Marin to Oakland so as to improve its signal into San Francisco. The station is unique in that its entire directional antenna array is located on the rooftop of a large warehouse. By 2005, the station was airing an oldies format. In 2005, Mapleton Communications purchased the station for $5.1 million, and began simulcasting the programming of KPIG-FM Santa Cruz on the station on July 1, 2005. KPIG-FM carried a progressive rock and alternative country format. AM 1510's call sign was changed to KPIG on August 4, 2005. To help KPIG, Mapleton purchased co-channel KGA in Spokane, a 50,000–watt Class A station. In 2008, Mapleton reduced the nighttime power of KGA to afford KSFN more power at night to better cover the Bay Area. KGA kept its 50,000 watt daytime signal but dropped its nighttime power to 15,000 watts. Additionally, and simultaneously, KGA was reduced in class from Class A to Class B. Subsequently, KGA eliminated its directional antenna system, and further reduced its nighttime power to 540 watts. On August 25, 2010, AM 1510's call sign was changed to KSFN. The station adopted a Chinese language format, targeting the Bay Area Chinese and Taiwanese communities. In 2019, Mapleton agreed to sell KSFN to Lazer Broadcasting. In anticipation of the sale, it switched KSFN to a Regional Mexican music format. Lazer specializes in Spanish-language formats. The sale to Lazer Broadcasting, at a price of $200,000, was consummated on December 31, 2019. It marked the exit of Mapleton from the radio