18 December 1923
On 18 December 1923 the first experimental radio broadcast in South Africa took place in Johannesburg. The Broadcast was of a music concert and was made by the Western Electric Company. Radio broadcast has grown since then to include Public, Commercial and community radio stations. According to research there are approximately 15.4 million radio sets in South Africa, with 30 million listeners tuning in everyday. The devises to access radio stations have also grown to include mobile phones and PCs.
References

Burger, D. (ed) (2002). South Africa Yearbook 2001/02, Pretoria: GCIS, p. 122.|South Africa Info South Africa's radio stations[online] Available at: www.southafrica.info[Accessed on 28 October 2013]