WHYN-FM (93.1 MHz "Mix 93.1") is a commercial radio station licensed to Springfield, and serving the Pioneer Valley of Western Massachusetts. It is owned by iHeartMedia and airs a hot adult contemporary format. Aside from a period between 1985 and 1987 when the call sign was WHFM, the station has had the call letters WHYN-FM since it first signed on in 1947.