It is a direct broadband provider using MPEG 2 and MPEG 4 technology and uses INSAT 4A satellites.DD Free DishDD Free Dish is operated by Prasar Bharati , a state-owned broadcaster and its a provider of free-of-charge direct digital broadcast satellite services. It is also known as Doordarshan DTH. It uses the Insat4B satellite and transmits 59 FTA channels in Ku band. It is the only free satellite channel in India.Airtel Digital TvAirtel Digital Tv is a product of Indian broadcast service provider, Bharti Airtel. It was launched in 2008. . It uses the SES-7 108.2°E satellite to transmit signals using MPEG-4 digital compression with DVB-S2 technology. It broadcasts digital channels and audio channels to families. Sun Direct Sun Direct is South India's leading DTH service provider. It uses Sun Direct MPEG-4 digital compression technology and INSAT 4B at 93.5°E to transmit HD channels and MEASAT-3 at 91.5°E to transmit SD channels. It is the first regional HD channel provider launched in Tamil. It is also the first DTH service provider in the country to use MPEG-4