Before revision: The decline of AM radio as a music source in the 1970s, combined with new Canadian government rules imposing minimum domestic music content , made it difficult for CKLW to continue to compete for listeners with Detroit-based, US-licensed FM music stations, which offered clean stereo sound and faced no program content or music playlist restrictions.
After revision: domestic ownership of andon Canadian-based stationsThe decline of AM radio as a music source in the 1970s, combined with new Canadian government rules imposing minimum domestic music content , made it difficult for CKLW to continue to compete for listeners with Detroit-based, US-licensed FM music stations, which offered clean stereo sound and faced no program content or music playlist restrictions.