KIIS-FM (102.7 MHz) is a commercial radio station licensed to Los Angeles, California, United States, and broadcasts to the Greater Los Angeles area. The station airs a Top 40 (CHR) format. Owned by iHeartMedia, KIIS-FM is the origin of the conglomerate's KISS-FM brand (with the call sign pronounced as "kiss"), and serves as the flagship station for the radio program On Air with Ryan Seacrest. KIIS-FM's studios are located in Burbank, while the station transmitter resides on Mount Wilson, north of Los Angeles. In addition to a standard analog transmission, KIIS-FM broadcasts over two HD Radio channels including "Evolution" on its HD2 subchannel, featuring an all-dance music format; streaming online via iHeartRadio; and extends its on-air signal by using a single full-power repeater, KVVS (105.5 FM) in Rosamond, California. The station also simulcasted over channel 11, and later channel 14 on Sirius XM satellite radio until June 2022. KIIS-FM has consistently been rated the number-one radio station in the Los Angeles/Orange County and Ventura County markets, averaging nearly one million listeners. Currently its secondary HD Radio subchannel merely serves to delay KIIS-FM's primary audio by ten seconds. As of December 2021, KIIS-FM is the only Top 40 station in the Los Angeles area, after Audacy's KNOU flipped to a simulcast of KNX and changed its callsign to KNX-FM. History KLAC/KRHM The station at the 102.7 FM frequency first signed on in 1961 as KLAC-FM, a sister station to KLAC (570 AM). It swapped frequencies with KRHM (which had gone on the air at 94.7 FM in 1948 as KFMV) in 1965. KKDJ/K-Double-I-S KRHM changed its call sign to KKDJ and flipped to contemporary hit radio (CHR, also known as Top 40) on April 15, 1971. The format lasted until 1975, when Combined Communications purchased KKDJ. The station's format was changed to adult contemporary on October 22, 1975 at 6:00 a.m., during Charlie Tuna's morning show when KKDJ began simulcasting with KIIS (1150 AM) with an on-air mock wedding, with KKDJ "marrying" KIIS. Meanwhile, KKDJ's call letters were changed to KIIS-FM. The spelling of "K-I-I-S" instead of KISS was because it resembled the AM frequency: "1150" = "IIS". The new merged station was referred to as, "AM and FM, K-double-I-S." Making the transition from KKDJ to KIIS-FM were popular disc jockeys including Humble Harve, Jay Stevens, John Peters, Danny Martinez, and Charlie Tuna. Tuna, an iconic voice of Los Angeles radio,