India’s Economic Times reported that the country’s two biggest GSM operators, Bharti Airtel and Vodafone Essar, contributed more than 58 per cent of the spectrum revenue raised by the country’s government in the second quarter of the calendar year. All companies share part of their revenue with the government as a spectrum usage charge, depending on the amount of frequencies they have available; the GSM operators have previously said that Tata Teleservices and Reliance Communications, which have both CDMA and GSM networks, have the same amount  available, but pay significantly less in levies.