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WCOS-FM signed on in March 1951 on 97.9 FM MHz as the sister station of WCOS-AM 1400 kHz and as Columbia's second FM station. Prior to 1963, it broadcast only during the evening hours. The programming featured Broadway, opera, and classical music, some or all of which came from the ABC Radio Network. In the fall of 1963, the station began broadcasting in stereo and the hours were extended to the daytime. The morning show was a simulcast of WCOS-AM, which was hosted by Bob Fulton, the long-time announcer for University of South Carolina football. After 9:00 a.m., the format was easy listening. The music was broadcast in mono until 6:00 p.m., converting to stereo for the evening hours. In the late 1960s, WCOS-FM converted to a Progressive rock format. Prior to the change, the station promoted the new format by announcing frequently that WCOS-FM was "going underground." By 1973, the station changed to country, adopting its longtime slogan "The Great 98." The format has remained since. In 1991, the station upgraded its signal by changing the frequency from 97.9 MHz to 97.5 MHz and increasing its power to 100 kW, making it one of the strongest FM signals in the Columbia radio market.

City of license	Columbia, South Carolina
Broadcast area	Columbia, South Carolina
Branding	"975 WCOS"
Slogan	"South Carolina's Country Station"
Frequency	97.5 (MHz)
First air date	March, 1951
Format	Country music
ERP	100,000 watts
HAAT	299 meters
Class	C1
Facility ID	71290
Callsign meaning	"We're Columbia's Own Station
Owner	Clear Channel Communications
Sister stations	WCOS, WLTY, WNOK, WXBT, WVOC-FM
Webcast	Listen Live
Website wcosfm.com

Source :		http://en.wikipedia.org/wiki/WCOS-FM