29 Aug '16, 3pm

Malawi and South Africa Pioneer Unused TV Frequencies for Rural Broadband

Malawi and South Africa Pioneer Unused TV Frequencies for Rural Broadband

Some people have taken to calling TV white space technology “Super Wi-Fi” or “White-Fi,” but we find those terms misleading because the technology is very different. TV white space uses VHF and UHF frequencies that have been set aside primarily for television broadcasts but are not in use in particular geographic regions or at specific times. The transition from analog to digital TV has opened up quite a bit of that spectrum. For TV white space networks, UHF is more attractive than VHF because its shorter wavelengths mean that smaller antennas can be used. The exact frequencies vary from country to country; in the United States, for instance, the allowed TV white space frequencies cover channels 2 through 51 except for channels 3, 4, and 37. And rural regions, especially those in sub-Saharan Africa, have no shortage of unused TV frequencies—sometimes the entire UHF and VHF...

Full article: http://spectrum.ieee.org/telecom/internet/malawi-and-sout...

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