I worked there (sales) for a little over a year around 1977. Mal owned it, while his two sons, Rick and Jerry, basically ran the place. Good folk all...although its safe to say Mal probably wasn't the world's greatest businessman. (Fortunately, son Jerry ran most of the biz side and had a pretty decent head for it).
Format was primarily "contemporary MOR" on WIVS during those days....with Mal mostly doing talk in the afternoons, but also mixing in a few tunes (mainly standards and showtunes). He definitely had fabulous pipes and a following with (mostly older) women. Hence, the WIVS call letters. Off-air, Mal was easy-going, approachable, pleasant to be around, and a great story-teller. Listening to his old 'BBM and CBS war stories was always a treat.
Co-Owned 105.5 (WXRD) was essentially AOR. Rick Bellairs was PD. Studios were in the Old Woodstock courthouse building. The WXRD stick was one of the WIVS towers adjacent to McHenry County College northwest of Crystal Lake. The same arrangement exists today for WAIT and WZSR.