The station signed on in September 1965 as KFMF licensed to Fort Collins, Colorado. It simulcasted the Top 40 format of KIIX AM 600 (now on 1410, the old 600 frequency is now KCOL).
In the 1970s, the station became KIIX-FM and adopted a freeform Progressive Music format. It changed its calls to KTCL in 1975 and evolving to the modern rock format in the mid 1980s. The station was known as "The Adventure."
1995–present
KTCL, part of a joint sales agreement with KBPI and KRFX in 1995, moved to a more pop-oriented direction when KBPI began playing more new rock.[1] In the late 90s, the station dropped its longtime name "The Adventure" in favor or "Channel 93-3." In 2001, KTCL aired the daily program Martha Quinn's Rewind along with at least four other stations owned by Clear Channel.[2]