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Title: Kosi  
Author: World Heritage Encyclopedia
Language: English
Subject: KEZW, KYGO-FM, KRWZ, KQMT, Denver Radio
Publisher: World Heritage Encyclopedia


City of license Denver, Colorado
Broadcast area Denver, Colorado
Branding KOSI 101
Slogan Continuous Lite Rock
Frequency 101.1 MHz (also on HD Radio)
First air date 1968
Format Adult Contemporary (Christmas music Nov-Dec)
ERP 74,000 watts
HAAT 495 meters
Class C
Facility ID 67844
Callsign meaning Sounds like "cozy"
Owner Entercom (operated by Bonneville International under a TBA)
(Entercom License, LLC)
Webcast Listen Live

KOSI is a commercial radio station located in Denver, Colorado, broadcasting on 101.1 FM. KOSI airs an adult contemporary music format branded as "KOSI 101". Its studios are located in the Denver Tech Center district, and the transmitter is on Lookout Mountain near Golden.


  • HD programming 1
  • History 2
  • Christmas 3
  • References 4
  • External links 5

HD programming

KOSI broadcasts in the HD format.[1]


KOSI-FM signed on in 1968 airing an easy listening/beautiful music format. At the time, it was paired with KOSI 1430 AM. The stations were owned by Bill Armstrong, who would later become a Republican congressman and two term U.S. Senator. Armstrong sold KOSI-FM to Westinghouse Broadcasting in 1981. KOSI-AM then became KEZW in March of that year. In 1988, Westinghouse sold KOSI and KEZW to D&D Broadcasting, Inc. for $15.5 million. [2] By 1990, the format evolved into its current mainstream adult contemporary music format. Entercom would buy the station in 2002 from Tribune Broadcasting. Tribune owned the station from January of 1993 to December of 2002. From 2007 to 2011, KOSI aired the syndicated Delilah radio show. Delilah has since been replaced with local programming.

On July 14, 2015, as part of their merger with Lincoln Financial Media, the Department of Justice forced Entercom to spin off KOSI, KYGO-FM, KKFN and KEPN to Bonneville International in exchange for Bonneville's KSWD in Los Angeles to meet ownership limits. Both Bonneville and Entercom began operating their new clusters via Time Brokerage Agreements on July 17, 2015 until the transaction is consummated.[3]


KOSI is the only radio station in the Denver area to switch its format entirely to Christmas music during the Christmas season. The change generally takes place during the week of Thanksgiving and continues until 12:00 AM on December 26, at which point the format goes back to soft adult contemporary. In 2008 the Christmas music continued until December 27. KOSI is not the only station in Denver to do this. AM 1430 KEZW plays exclusively Christmas music from just after Thanksgiving until December 26th, and plays several holiday songs daily until New Year's Day.


  1. ^
  2. ^ westinghouse%22
  3. ^

External links

  • Official Website
  • Query the FCC's FM station database for KOSI
  • Radio-Locator information on KOSI
  • Query Nielsen Audio's FM station database for KOSI

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