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KOST

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KOST
Broadcast areaGreater Los Angeles
Frequency103.5 MHz (HD Radio)
BrandingKOST 103.5
Programming
FormatAdult contemporary
SubchannelsHD2: Talk radio (KFI)
Ownership
Owner
History
First air date
October 9, 1957
(67 years ago) (1957-10-09)
Former call signs
  • KFSG-FM (CP, 1956–1957)
  • KPUL (CP, 1957)
  • KGLA (1957–1966)
  • KADS (1966–1968)
Call sign meaning
Sounds like "coast"
Technical information[1]
Licensing authority
FCC
Facility ID34424
ClassB
ERP11,500 watts
HAAT949 meters (3,114 ft)
Transmitter coordinates
34°13′35.3″N 118°4′0.9″W / 34.226472°N 118.066917°W / 34.226472; -118.066917
Translator(s)See § Translators and booster
Links
Public license information
Webcast
Websitekost1035.iheart.com

KOST (103.5 FM) is a commercial radio station in Los Angeles, California, United States. Owned by iHeartMedia, it broadcasts an adult contemporary radio format, switching to Christmas music in early November and ending on Christmas Day. Its studios are co-located with its sister stations on West Olive Avenue in Burbank. KOST is the home of Ellen K, segments of whose morning show are syndicated to other iHeart AC stations on Saturday mornings.

The transmitter is atop Mount Wilson alongside most L.A. based television and FM radio stations. Those FM stations, along with KOST, are considered "superpower" grandfathered stations, since their effective radiated power (ERP) greatly exceeds the level set by the Federal Communications Commission for Class B FM stations at their height on Mount Wilson. KOST broadcasts using HD Radio technology.[2] The HD2 digital subchannel rebroadcasts co-owned talk radio station KFI.

History

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KOST 103.5 logo used until 2013.

Early years

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On October 9, 1957, the station first signed on as KGLA.[3]

Noted radio programmer Gordon McLendon bought KGLA in the 1960s, changing the call letters in November 1966 to KADS.[4] McLendon, with permission from the Federal Communications Commission, experimented with an all-advertisement format, hence the call sign choice. One of its features was that listeners could purchase their own commercials on KADS, not unlike classified advertising in a newspaper.[4] FM radios were still not widely owned in the 1960s and the experimental format was not successful.[5]

Beautiful music

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In March 1968, the station adopted the KOST-FM call sign, along with a substantially all-music format (i.e., no news bulletins), which was unusual, if not unique, given then-prevailing license obligations to broadcast at least some news.[5] The station aired a mostly-instrumental beautiful music format. In 1973, Cox Communications purchased KOST to pair with its newly-bought KFI (640 AM). KOST, with its call sign pronounced "coast" in a stage whisper, continued its easy listening format through the 1970s. This popular format was also heard on rivals KJOI (98.7 FM) and KBIG (104.3).

In the early 1980s, KOST gradually added more vocals, and on November 15, 1982, the station switched to an adult contemporary format. Former Sacramento radio personality Bryan Simmons was KOST's first host when the station signed on with its new format.

On February 3, 1986, Mark Wallengren and Kim Amidon made their debut as KOST's new morning hosts.[6] The Mark & Kim Morning Show was one of the longest-running shows on Los Angeles radio, airing for more than 20 years until ending in 2007.

AMFM/Clear Channel/iHeartMedia era

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In September 1999, Cox Communications swapped KOST and sister station KFI with AMFM, Inc. for 14 stations in several East Coast markets.[7] AMFM was then purchased by Clear Channel Communications in 2000. (In 2014, the company's name was changed to iHeartMedia, Inc.) Over the years, particularly in the late 2000s and into the 2010s, the station would shift to a more upbeat mainstream AC format. Despite the changes, KOST has continued to garner solid ratings. Christmas music has been aired from early November through Christmas Day since 2001.

KOST experienced little air staff turnover until the 2000s. On November 29, 2007, morning show co-host Kim Amidon departed the station.[8] This was followed by KOST's original midday host Mike Sakellarides (who moved on to KTWV) and longtime traffic reporter Mike Nolan (who was eventually rehired at KOST). In October 2008, former KYXY San Diego radio personality Kristin Cruz joined Mark Wallengren as co-host of KOST's morning show. Cruz left the station in May 2014.[9] In 2009, the midday shift was voice-tracked by former WLTW New York City personality Karen Carson.

In February 2011, Carson resigned to join CBS Radio-owned WWFS in New York. Both Christine Martindale (2 days per week) and Ted Ziegenbusch (3 days per week) filled in on the midday show until August 2011, when former KBIG midday host Kari Steele took over.[10] Steele now hosts KOST's public affairs program The Sunday Journal broadcasting every Sunday following Animal Radio, providing interviews with community organizations. Also in August, longtime KOST afternoon personality Bryan Simmons left KOST. Simmons had been on the station since 1982,[10] except between 2002 and 2004, when he hosted the Boogie Nights show at KBIG. Ted Ziegenbusch filled in for several months after Simmons departed.

In December 2012, Christine Martindale was among the radio personalities laid off from Clear Channel stations. On January 17, 2013, it was announced that Martindale would join KKGO (105.1);[11] her first day at Go Country 105 was February 4.

Ellen K, a former co-host on the KIIS-FM morning show and On Air with Ryan Seacrest, took over the KOST morning show on October 19, 2015. Mark Wallengren, who had been part of the KOST morning show since 1986, moved to afternoons, replacing Bruce Scott, who had been with station since 2012.[12]

Longtime DJs Mark Wallengren and Ted Ziegenbusch departed the station on January 16, 2020, as a result of mass layoffs nationwide by parent company iHeartMedia; the two had been at KOST since the 1980s, Ziegenbusch being the last remaining original staff member hired in 1982.[13]

HD programming

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KOST broadcasts three digital subchannels:

  • KOST-HD1 is a digital version of KOST's analog signal.
  • KOST-HD2 is an HD simulcast of the talk radio format heard on co-owned KFI (640 AM).

From November 2013 until February 2015, KOST's HD3 signal relayed the syndicated Christian contemporary hit radio station Air1.[citation needed] In early February, the station's HD3 signal went dark and the Air1 feed moved to a subchannel on co-owned KHHT (92.3 FM). The HD3 signal returned in November 2018, however, it is no longer operating.[14]

Translators and booster

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KOST is rebroadcast on the following translator and repeater stations:

Broadcast translators for KOST
Call sign Frequency City of license FID ERP (W) HAAT Class FCC info Notes
K234CR 94.7 FM China Lake, California 28582 9 390 m (1,280 ft) D LMS Provides service to nearby Ridgecrest
KOST-FM1 103.5 FM Santa Clarita, California 198146 500 612 m (2,008 ft) D LMS Booster
K280DT 103.9 FM Thousand Oaks, California 14241 5 215 m (705 ft) D LMS Provides service to Thousand Oaks

Awards

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In 2007, the station was nominated for an "Adult Contemporary Station of The Year" award for the top 25 radio markets by Radio & Records magazine.[15]

References

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  1. ^ "Facility Technical Data for KOST". Licensing and Management System. Federal Communications Commission.
  2. ^ "HD Radio Guide for Los Angeles".
  3. ^ "Directory of AM and FM Radio Stations in the U.S." (PDF). Broadcasting Yearbook. Broadcasting Publications Inc. 1968. p. B-17. Retrieved June 6, 2018.
  4. ^ a b "An FMer finds a niche with classified advertising" (PDF). Broadcasting. Broadcasting Publications Inc. August 14, 1967. p. 46. Retrieved June 6, 2018.
  5. ^ a b Garay, Ronald (1992). Gordon McLendon: The Maverick of Radio. Westport, Connecticut: Greenwood Press. pp. 138–144. ISBN 0-313-26676-X. ISSN 0732-4456. LCCN 91-35968. Retrieved June 6, 2018.
  6. ^ "Wallengren Takes KOST Mornings" (PDF). Radio and Records. February 7, 1986. p. 6. Retrieved June 6, 2018.
  7. ^ "AMFM Secures So. Cal. Seven With Cox Deal" (PDF). Radio and Records. September 10, 1999. p. 6. Retrieved June 6, 2018.
  8. ^ "CC's Restructuring Sleigh Ride Off The Cliff" (PDF). Radio and Records. December 7, 2007. p. 12. Retrieved June 6, 2018.
  9. ^ "Kristin Cruz Exits KOST". AllAccess.com. All Access Music Group. May 13, 2014. Retrieved June 6, 2018.
  10. ^ a b "Kari Steele Joins KOST For Middays, Bryan Simmons Exits". AllAccess.com. All Access Music Group. August 29, 2011. Retrieved June 6, 2018.
  11. ^ Horgan, Richard (January 17, 2013). "Laid Off KOST-FM Personality Christine Martindale Goes Country". Adweek. Retrieved June 11, 2017.
  12. ^ Venta, Lance (October 7, 2015). "Ellen K Moves From KIIS To KOST". RadioInsight. Retrieved June 11, 2017.
  13. ^ "KOST-FM lays off longtime afternoon DJ Mark Wallengren after 35 years on air". Los Angeles Daily News. January 16, 2020. Retrieved January 24, 2020.
  14. ^ "KOST 103.5 adds hd3". RadioDiscussions.
  15. ^ "2007 Industry Achievement Awards". Radio and Records. September 28, 2008.
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