Radio WEFG-FM (The Champ)

WWSN (97.5 FM, "Sunny FM") is a radio station broadcasting a Adult Contemporary format. Licensed to Whitehall, Michigan, it first began broadcasting under the WPBK-FM call sign.

On December 14, 2010, just four days after it was announced that Clear Channel/Muskegon would replace WSHZ's Adult Top 40 format with WMUS and its Country format, WEFG dropped the format to pick up WSHZ's former one as "Sunny FM." This marks the second time since 1996 that another station has used the "Sunny" moniker other than WSNX, whose call letters once matched that handle. Sister station WVIB was known as Sunny FM for a time until 2004.