WKNL (100.9 FM, "100.9 K-Hits") is a radio station licensed to serve New London, Connecticut. The station is owned by Hall Communications, Inc., which owns a number of stations in medium-sized markets along the eastern seaboard from Vermont to Florida.^[3] It airs a classic hits music format.^[4]

WKNL signed on January 1, 1970, as WTYD, a beautiful music station branded as "Tide 101".^[5] At the outset, the station was owned by Thames Broadcasting Corporation, which also owned WNLC (1510 AM).^[6] Thames Broadcasting sold the stations to Mercury Broadcasting Corporation in 1976;^[7] in 1984, Mercury sold them to Drubner Broadcasting,^[8] which then sold WTYD and WNLC to Andross Communications in 1989.^[9] In 1990, WTYD shifted to an adult contemporary format.^[5]

Hall Communications purchased WTYD and WNLC in 1995.^[10] On March 10, 2000, Hall changed the station's format to oldies as "Kool 101", in response to WVVE (102.3 FM, now WMOS) dropping the format in December 1999;^[5] the WKNL call letters had been assigned on February 25, 2000.^[1] The oldies format (which subsequently shifted to classic hits) was dropped at midnight on December 17, 2012, when it changed to hot adult contemporary, branded as "100.9 Roxy FM"; at the time, sister station WNLC (98.7 FM) also programmed a classic hits format.^[11] The last song on "Kool 101" was "Last Dance" by Donna Summer with the first song on "100.9 Roxy FM" being "Some Nights" by Fun.^[11] On March 1, 2017, at 5:00 pm, WKNL flipped back to classic hits, branded as "100.9 K-Hits". The airstaff from Roxy remained on the station with the change.^[11]