RSG (Radio Sonder Grense, meaning "Radio Without Borders") is an Afrikaans-language radio service operated by the South African Broadcasting Corporation (SABC) for the whole of South Africa. Launched in 1937 as the SABC's "B" service, it has undergone several name changes over the years before adopting its current name in 1996.

Broadcasting primarily on FM, RSG offers a diverse range of programming in Afrikaans, including news, talk shows, music, and cultural content. The station caters to Afrikaans-speaking listeners of all ages and backgrounds, reflecting the rich cultural heritage of the community.

RSG's programming includes popular shows like 'Monitor', 'Spektrum', 'Oggend op RSG', and 'Middag op RSG', which provide a mix of music, news, and interactive content. The station features a variety of music genres, from traditional 'Boeremusiek' to contemporary Afrikaans pop and rock.

With its slogan "Dis die een!" (It's the one!), RSG positions itself as the go-to radio station for Afrikaans-speaking South Africans. It serves as an important platform for preserving and promoting the Afrikaans language and culture while providing informative and entertaining content to its listeners.