In 1968 TWR began pursuing the possibility of building a radio station in southern Africa. Six years later, on 1 November 1974, TWR went on the air from the Kingdom of Swaziland - an answer to some 25 years of prayer by Christians in South Africa. Today, from Swaziland and Johannesburg, programmes in 60 languages are beamed to southern, East and West Africa via short- and medium wave, FM and satellite. Many programmes are also aired to the area known as the 10/40 window.

Trans World Radio - South Africa (TWR-SA), with offices and studios in Kempton Park and Pinetown, is the national partner of TWR. Many local Christian radio stations are also assisted by TWR-SA. Programmes in various languages are produced by us. Our desire is to, in future, bring the Gospel to people in all of the 11 official languages in South Africa.

1 November 1974 – Swaziland

In August 1973 the government of Swaziland gave TWR permission to establish broadcast facilities. Swaziland is a small country located in the southeastern part of the continent of Africa. From this location Trans World Radio broadcasts more than 260 hours per week of programming in more than 25 languages to sub-Saharan Africa and Pakistan.

4 December 1994 – Johannesburg

Trans World Radio increased its number of transmitting stations to ten with the start-up of broadcasts on 4 December 1994, from a transmitting station south of Johannesburg, South Africa. With the addition of the Johannesburg transmitting site, TWR has dramatically expanded its area of broadcast coverage on the African continent.