Sentech is a broadband network business accommodating narrowband functionality on a common platform, supplying communication solutions and services to wholesale and retail customers in chosen markets in South Africa and the rest of the continent.

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Sentech is the signal distributor for the South African broadcasting sector. The organisation began operations in 1992 as the signal distributor of the South African Broadcasting Corporation. Sentech's mandate also included providing services to M-Net, Radio 702, Radio Ciskei, Radio Transkei and the Bophuthatswana Broadcasting Corporation.

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