Conlon first came to public attention in South Australia in the mid-1960s as a member, with twins Peter and Martin Wesley-Smith, of the folk-singing group "The Wesley Three", who had several successes on the local hit parades, including the children's song "Little Tommy".

In 1971, The University of Adelaide's Department of Adult Education appointed Conlon as the Producer/Manager of its new community radio station which commenced broadcasting as VL5UV on 28 June 1972.

[7] Conlon has also worked at ABC 891 where his former colleague John Kenneally was his producer.

Conlon presented talk radio station 5AA's breakfast program with Jane Reilly, and formerly with Jon Blake, John Kenneally and Tony Pilkington.

Conlon has had a life-long interest in South Australian history, and in December 2017 he was appointed to a 3-year term as chair of the South Australian Heritage Council,[1] an independent advisory body on heritage matters to the Minister for Sustainability, Environment and Conservation, and the Minister for Planning.