 Geoffrey Whitehead was the initial Managing Director, however following his resignation in 1986, David Hill (at the time chair of the ABC Board) took over his position.In 1981, ABC Radio began carrying Aboriginal and Torres Strait Islander broadcasts in Alice Springs and later Northern Queensland, while at the same time comedy and social history units were set up, and news and current affairs output expanded.Teletext services were introduced to ABC-TV in 1983 to allow hearing-impaired viewers access to closed captions.