wmni (920 am) is a radio station in columbus, ohio that went on the air april 26, 1958 and carries a soft adult contemporary music format. wmni is locally owned by columbus-based north american broadcasting company, inc. it broadcasts with one kilowatt of power during the day, but reduces to 500 watts at night. the indy 500, the brickyard 400, notre dame football, the pittsburgh steelers, and the columbus clippers are all carried on the station. the studios are located on dublin road in marble cliff while the transmitter is in grove city.