Wallenius' first play-by-play sportscast was the women's 60 meters hurdles, which he watched from videotape, for radio.
Within two years, the bug would be expanded to all sportscasts.
Soon thereafter, it added live sportscasts and business reports.
Both networks offered sportscasts, music, public affairs programming and closed-circuit affiliate feeds of news and sports correspondent reports and news-maker actualities.
He also did two afternoon newscasts and a sportscast.
He also contributed sportscasts to the program until the late 1960s.