Yes, in fact KMEO was even owned by Bonneville back then.
Back when I was a 14 year old, during summer when school was out, I would travel to a different Phoenix radio station each week, usually by public transit and ask to tour the station, especially the studio to meet and talk to the on air staff. I remember KMEO and the wall full of reel to reel tapes, with the announcer going back and forth between the AM and FM doing the breaks separately. As busy as he was, he took time to explain to me that it was due to AM/FM simulcasting regulations. He even let me cue up one of the reel to reel tapes! And a radio nerd was born.