WFAS-FM (103.9 FM) is a radio station located in Westchester County, New York, covering the county and surrounding vicinity. The station features an adult contemporary format and is under ownership of Cumulus Media. The station formerly simulcast on WFAF (106.3 FM), located in Mount Kisco, New York, allowing WFAS to cover most of the Mid-Hudson Valley, Northern Westchester and Putnam Counties, as well as much of western Connecticut; in 2012, WFAF became WDVY, a simulcast of WDBY. Although its intended reach is the Lower Hudson Valley, WFAS can also be heard throughout northeastern New Jersey, and northern portions of New York City and western Long Island.
The station's broadcast tower and facilities are located at 365 Secor Road in Hartsdale, NY. WFAS has received a construction permit to move their transmitter to the Norwood section of the Bronx, New York City's northernmost borough, bordering southern Westchester County.