SÃO PAULO (WiMAX Day). TVA, one of the leading pay TV cable networks in Brazil, has announced that it will begin a massive trial of WiMAX technologies in São Paulo, using equipment from Nortel. According to a news conference held yesterday, testing of the network will begin in the second quarter of this year, using 2.5 GHz spectrum. The statement from TVA noted that “deploying a WiMAX network requires one-third the investment of a wired network and improves operator profitability through reduced deployment time, operation and maintenance costs. In addition, WiMAX delivers superior data throughput and mobility, allowing users to stay connected and experience true broadband – even while on the move.”