Rex Moncur was licenced as an Amateur radio operator in 1960 and holds the callsign VK7MO. He graduated in Communication Engineering from the RMIT in 1962 and worked on the development of telemetry systems at the Bureau of Meteorology. In 1973 he moved to Canberra and took on administrative roles in the Department of Science including Secretary of the Australian Research Grants Committee (now the ARC). In 1985 he moved to Australian Antarctic Division in Hobart and retired as Director of the Division in 1998. Since retirement he has returned to Amateur radio with a focus on weak signal work using computer generated and decoded digital modes.