Radio T FM or Rede T de Radios is a Parana network of radio stations with talk shows and entertainment programs. It belongs to Marcio Martins and has extensive coverage across the state with 21 broadcasters. Headed by the 99.9 FM frequency of Ponta Grossa, the network has branches in Curitiba, Maringa, Cascavel, Foz do Iguaçu, Guarapuava, Campo Mourao and Paranavai, in addition to other smaller municipalities. Interestingly, all stations on the network have RDS technology (even stations installed in neighboring countries).
Radio T FM has been on the air since 1991 in Ponta Grossa as Tropical FM, a space previously occupied by Lagoa Dourada, since the 1970s. In the mid-1990s, it started expanding towards the interior of the state. Since June 1, 2009, a new fantasy name was released, and "Tropical FM" was renamed "Radio T FM", or "Rede T de Radios".
Also in 2009, the broadcaster obtained a concession in Pinhais, capable of covering Greater Curitiba at 106.9 MHz, migrating to 104.9 in May 2011.