sentences:  The station first began broadcasting under the WGRD call sign in 1948.As AM 1410 was originally a daytime-only station, the WGRD calls stood for Grand Rapids Daytime.The station adopted the Top 40 music format in 1959 and was a top-rated station in the Grand Rapids market during the late 1950s and early 1960s, though the station had lost ground to WLAV 1340 and WZZM-FM 95.7 by the end of the decade.