In order to start a TV channel some of the things that are needed are -
1. Uplink and Downlink license.
2. Yearly fee for broadcasting compliance
3. Permission for the broadcasting on specific spectrum
4. Leasing uplink and downlink on specific satellite
5. Advertising compliance
6. Content compliance
You need compliance certificate and the yearly fee for each one of them. Also the cost for the leasing and the content needs to be considered. You have to also start a brand and get it registered as a company. After that you can get the necessary documentation, fees and the funds for the same.
Based on the speculation being done online in some communities. 80 Crores is the starting funding for the setup and the satellite lease. If you choose to do the relaying through local cable then the cost goes very down. And it goes around 50-70 lakh setup. However content requires to be transmitted through the frequency for which you may need to fund and work on.