The station began broadcasting in 1994 with 100 watts. Power was increased to the present 420 watts in 2001. WLNZ began broadcasting in HD in 2006.
Programming originally consisted mainly of jazz and blues music, but has recently changed to an Adult Alternative format known as Horizons. Each morning there is a live local talk show called Coffee Break which is televised in the Lansing area on Comcast local Public-access televisioncable TV. WLNZ's original jazz format continues on its HD-2 station, which is branded as Jazz Now!.