WSLI is a radio station which is part of the Smile FM radio network. It began operation in July, 2008. With a transmitter located just west of Belding, the station covers portions of the Grand Rapids, and Ionia, Kent, and Montcalm counties. WSLI broadcasts the Smile FM programming from flagship station WLGH in Lansing. WSLI is owned by Smile FM under the official name of Superior Communications.
The original Construction Permit granted on July 15, 2005 called for 10 kW from a short 98' tower. After having an application to modify to 14 kW dismissed by the FCC due to a small overlap in coverage area of WCSG, a construction permit for 11.5 Kw directional signal from a 249-foot (76 m) tower was approved on May 2, 2007.
During the final stages of station construction the construction permit was modified to a 2.9 Kw non-directional signal from a much shorter 98-foot (30 m) tower in order to get the station on the air before the construction permit expired. The station was granted a construction for the originally approved power, directional pattern, and tower height on May 20, 2010.
On December 27, 2010, the station began broadcasting with increased power.