Summary contributed by Jeffrey T. Mason. I think I am qualified to give a summary of the 80’s Channel/Chicago sign-on, seeing that I was one of the folks who orchestrated it! Contrary to popular belief, Big City Radio – not Chancellor Media – was the first company to debut a “Jammin’ Oldies” type format. It was not called “Jammin’ Oldies,” but “103.1FM, Chicago’s Heart & Soul.” They purchased WVVX/Highland Park and WJDK/Morris, both at 103.1 to create the simulcast. Call letters were changed to WXXY and WYXX. Due to a poor signal, and some bad judgment in their outdoor campaign (billboards placed in areas that could NOT receive the station), “Chicago’s Heart & Soul” didn’t see much suc...