Career
In his early years he joined a radio station in Swift Current, Saskatchewan. After a time at CJOC in Lethbridge, Alberta, Duncan was offered a job in Bermuda where he stayed for a year and a half. While in London on a trip, Johnson came across a newspaper article that outlined the formation of Radio London.
At first he covered for broadcasters who were on shore leave, but eventually had his own show, "London After Midnight".
After leaving Radio London Duncan worked for several companies including the British Broadcasting Corporation, Electric and Music Industries, Radio Northsea and Radio Invicta. In 1968, Johnson recorded a single for Spark Records, "The Big Architect".