WSNG was originally signed on in the late 1940s as WTOR which tranmitted from 93 Perkins Street with 250 watts on 1490kc. It moved the transmitter to Harwinton in 1964 after being granted 1 kW day 500w nite with a three tower directional array on 610 kc. It was then owned by Edmund Willian Waller. The call letter change came after the station was acquired by new owners at a date later than 1966.
The format at WSNG was full service radio throughout the 1970s and '80s. Many popular personalities worked at WSNG including "Captain" Jay Sheldon, Dan Lovallo and news anchor Jeff Zeiner. During the mid-1980s these personalities left and the format shifted to "consumer" radio. That format proved unpopular and an abortive attempt of returning to full service radio failed. New competition from WZBG caused the station to go dark in the 1990s.
Buckley Broadcasting purchased the station before it would have permanently lost its license. It now simulcasts WDRC as part of the Talk of Connecticut network.
On March 5, 2014, Buckley Broadcasting announced that it would sell its Connecticut radio stations, including WSNG, to Connoisseur Media. The sale was consummated on July 7, 2014 at a price of $7,922,035.