In 1935 he signed up as an announcer with radio 2GB, headquarters of the Macquarie Radio Network, eventually becoming its chief announcer. He has been named as one of the 'Five D's of Australian Radio' with Jack Davey, Bob Dyer, Terry Dear and Harry Dearth. His longest-running program was World Famous Tenors. Other programs include Nature Speaks 1947 – 54. As a volunteer he recorded approximately two hundredTalking Books for the Blind.
''The Quiz Kids''
In 1942 he began the program for which he is now best remembered, The Quiz Kids. Modelled on a US program of the same name, its format involved a panel of five Sydney schoolboys and girls aged 11 to 15, who were challenged by questions sent in by listeners from all around Australia. The listener was rewarded with cash and sponsors' products in the event of no 'Quiz Kid' supplying a satisfactory answer. A separate panel in Melbourne was used for six weeks each year. Dease played the avuncular quizmaster. In all publicity photographs and public appearances he wore an academic gown and mortarboard, as were the panel members, many of whom, such as NSW premier Neville Wran, senior academics John Lambert, Jack Goldring and James Seymour Hagan, were to achieve eminence as adults. Barry Jones, who later went on to become a Labor politician, was a member of the Melbourne panel in 1947 and 1948. Others included Sue Pearson, David Low, Nola Manning, Michael Connors, Leon Smith, Yvonne Cossart, Milton Osborne, Alana Conlan, Tom Kalmar, Annette Cumine. The first team in 1942 consisted of James Hagan, Bernard Lake, Alan Mitchell, Audrey Baker and Dorothy Revie. The program was broadcast on 2GB Sunday 7:30pm; Tuesday 8pm from 1943; Sunday 7:30pm from 1959 and was terminated on 14 October 1962. Sponsors were Colgate-Palmolive 1942–1944; Johnson & Johnson 1944–1958. The program was revived for television on ABC Television from 1964–1968 after an abortive simulcast attempt in 1957.
Acting career
Dease was an active supporter of live theatre, helping Peter Finch establish the Mercury Theatre in 1946. Apart from parts in episodes of various TV series, he played Sir Hubert Wilkins in the 1946 movieSmithy, 'Whitty' in the 1970 movie Ned Kelly and newsreader 'Ken' in the successful 1978 movieNewsfront. He was also in demand as commentator on newsreels and travelogues such as The Dance of the Eyes.
Personal life
Always of left-wing political persuasion, he was elected vice-president of Actors Equity but forced to resign in 1948 after being labelled a Communist. In 1972 he appeared in a Labor Party advertisement under the slogan It's Time although he was an Australia Party candidate for the federal seat of Evans. He joined the Labor Party in 1974. Dease married Margaret Mary Mildred 'Greta' Lofberg in December 1938. She publicly filed for divorce in 1944. He remarried in 1948 to Rankura 'Kura' Margery De Villiers Walmsley née East. They were still married until his death in 1979. He was also survived by children John, Sarah, and Geoffrey.