WSNL

WSNL (600 AM) is a radio station broadcasting a religious format. Licensed to Flint, Michigan, it first began broadcasting in 1946.

The original call letters were WFLM, but the station was purchased in December 1946 by George W. Trendle and H. Allen Campbell, who changed the call letters to WTCB and made the station into Flint's NBC Radio Network affiliate. The calls changed to WTAC October 13, 1948, still under Trendle and Campbell's ownership. WTAC popularly stood for "WE THE AUTO CITY", referring to Chevrolet and Buick plants formerly located in Flint, but it actually stood for Trendle and Campbell.

Trendle and Campbell sold WTAC to a Hawaii-based group in 1954. Under the ownership of Radio Hawaii, Inc., WTAC shed its NBC affiliation to become one of Michigan's first Top 40 music stations in 1956. Its original program director was Mike Joseph, who would launch the legendary WKNR "Keener 13" in Detroit in 1963 and later went on to create the Hot Hits format in the early 1970s. It was also owned for a time by the Chess brothers, who owned and operated Chess Records. "The Big 6" flourished as a Top 40 rock station during the 1960s and 1970s before changing to a country format in 1981. In its final years as a Top 40, WTAC helped introduce the Australian heavy metal band AC/DC to American audiences. During the early and mid-1990s WTAC operated as a contemporary Christian music station; the WTAC calls are now used on Smile FM's 89.7 FM signal in the Flint area. Christian Broadcasting System purchased the station in 1997 and installed the current call sign and format.