Wikipedia

KJAC

For the airport serving Jackson, Wyoming assigned the ICAO code KJAC, see Jackson Hole Airport.
KJAC is the former call sign of KBTV-TV in Port Arthur, Texas.

KJAC
Broadcast areaFort Collins-Greeley, Colorado
Denver, Colorado
Frequency105.5 MHz (HD Radio)
Branding105.5 The Colorado Sound
Programming
FormatAdult album alternative (AAA)
Ownership
OwnerCommunity Radio for Northern Colorado
KUNC
History
First air date
1989 (as KIMX)
Former call signs
KLWG (1987–1988, CP)
KIMX (1988–2003)
KKHI-FM (2003–2004)
Call sign meaning
Station previously broadcast the Jack FM format
Technical information[1]
Licensing authority
FCC
Facility ID38345
ClassC1
ERP50,000 watts
HAAT397 meters
Transmitter coordinates
40°37′3″N 105°19′39″W / 40.61750°N 105.32750°W / 40.61750; -105.32750
Translators88.9 K205FZ (Steamboat Springs)
94.3 K232AC (Breckenridge)
Repeater105.5 KJAC-FM1 (Boulder)
Links
Public license information
Websitecoloradosound.org

KJAC is a non-commercial public radio station located in Timnath, Colorado, broadcasting to the Fort Collins-Denver, Colorado area on 105.5 FM.

History

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KJAC started as a construction permit with the call letters KLWG, in 1987. The station officially signed on in 1989 with the call sign KIMX.[2] The KIMX call sign was subsequently moved to Wyoming, jumping around on various frequencies. In late 2003, as the station was using the KKHI-FM call sign, it was acquired by NRC Broadcasting, which successfully managed to launch the innovative Jack FM format a few months later.[3]

Adult hits (2004–2012)

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KJAC previously aired an adult hits music format branded as "Jack FM". For a short time, it was simulcast on AM radio, 870 KJMP, licensed to nearby Pierce, Colorado.[4][5] KJMP later broke the simulcast, and aired a sports format from ESPN Radio, which then became an oldies station known as "The Big 87". That station finally settled on hip-hop.[6]

Jack FM Denver was the first Jack radio station in the United States. Denver's Jack employed a comedic irreverence in its presentation, and a style of music endemic to the varied tastes of Colorado's front-range listeners. Each Jack station is a little different, and KJAC's attention to the style of Colorado gave the station a unique and local feel.

On September 1, 2008, NRC Broadcasting converted KCUV, into a rebroadcast of the current Jack FM feed, utilizing the 102.3 FM frequency to serve the broader Denver metropolitan area, while retaining the current 105.5 FM frequency that serves Northern Colorado. Jingles broadcast over the air often interchanged 102.3 FM and 105.5 FM, depending on whether the focus was on Denver, or the station in general.[7]

On July 15, 2010, it was announced that KJAC would stick with the current format while sister station KDSP flipped to sports on July 19, 2010.[8]

In 2011, 105.5 Jack FM dropped the local version and started using the Dial Global StorQ version that smaller market Jacks use.

Sports (2012–2016)

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On September 7, 2012, KJAC started stunting with classic country as "Bob FM", which led to a flip to ESPN Radio.[9]

Adult alternative (2016–present)

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On December 7, 2015, Front Range Sports Networks sold KJAC to Community Radio for Northern Colorado, who converted the station to a non-commercial Adult Album Alternative format on February 29, 2016, allowing primary station KUNC/Fort Collins, Colorado to focus on News/Talk programming. After KJAC ended its programming on January 3, 2016, ESPN Radio returned to former Denver affiliate KEPN in a full-time status with sister KKFN adding overnight programming (and dropping Fox Sports Radio from the schedule) starting January 4.[10]

On February 29, 2016, the adult album alternative format was officially launched as "The Colorado Sound"..[11] The sale to Community Radio for Northern Colorado was consummated on April 5, 2016, at a price of $3 million.

On July 14, 2017, KJAC began simulcasting on translator K232AC 94.3 FM Breckenridge.[12]

References

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  1. ^ "Facility Technical Data for KJAC". Licensing and Management System. Federal Communications Commission.
  2. ^ "Facility Details: KJAC (Facility ID: 38345)". Federal Communications Commission. Retrieved December 8, 2025.
  3. ^ "The Message". Denver Westword. December 11, 2003. Retrieved December 8, 2025.
  4. ^ "Laramie DX Report August 2003-May 2005 (see Colorado)" (PDF). World Radio History. Retrieved December 8, 2025.
  5. ^ "Audio Aircheck of KJAC/KJMP simulcast (October 22, 2004)". Ubstudios. October 22, 2004. Retrieved December 8, 2025.
  6. ^ Venta, Lance (November 21, 2019). "Classic Hip-Hop Jumps Into Fort Collins". RadioInsight. Retrieved December 8, 2025.
  7. ^ Roberts, Michael (September 2, 2008). "The end of KCUV". Denver Westword. Retrieved December 8, 2025.
  8. ^ "KUNC Acquires "ESPN Denver" 105.5 KJAC". RadioInsight. December 7, 2015. Retrieved December 8, 2025.
  9. ^ "Jack Throws In The Towel In Denver". RadioInsight. September 7, 2012. Retrieved December 8, 2025.
  10. ^ Ostrow, Joanne (December 7, 2015). "ESPN to affiliate with 104.3 The Fan on 1600 AM; KUNC buys 105.5 FM". The Denver Post. Retrieved December 8, 2025.
  11. ^ "KJAC Returns As The Colorado Sound". RadioInsight. February 29, 2016. Retrieved December 8, 2025.
  12. ^ "Colorado Sound Expands to Breckenridge". RadioInsight. July 14, 2017. Retrieved December 8, 2025.
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