Unfortunately it is illegal for anyone but the Cellular Network Providers to transmit on the cellular frequencies; or that radiate the signal. MTN and Vodacom have a license with ICASA to transmit on the frequency range. That is exactly what these ‘extenders’ do. Therefore to buy these systems over the internet (from other countries) and installing it here in South Africa (by you) is illegal. The problems with these repeaters are that they are expensive and, if they are not installed properly, they will influence the network negatively. If MTN, Vodacom, Cell C or ICASA ‘find’ these repeaters they will remove it and you might be liaible for a fine.