Born in Limerick, his first radio broadcast was on Radio Éireann in 1935 as part of the Scoil Colmchille school choir. In 1948 he began featuring on his father Seán Ó Ceallacháin's Sunday-night GAA results show on radio. After his father retired, he presented 'Gaelic Sports Results' from 1953 until he retired in 2011. This made him RTÉ's longest serving broadcaster. He entered the 2012 Guinness Book of Records for achieving the longest career in radio sports broadcasting worldwide.