The satellite used for free DTH in India is GSAT 15, positioned at 93° East. This satellite is utilized by DD Free Dish, India's first free DTH service, which was launched by public broadcaster Prasar Bharati in December 2004.
GSAT-15 is a communication satellite launched by the Indian Space Research Organisation (ISRO) on November 11, 2015.
Satellite Specifications -
Launch Vehicle: Ariane 5 VA-227
Launch Site: Guiana Space Centre, French Guiana
Orbit: Geostationary orbit at 93.5° East longitude
Payload: 24 Ku-band transponders and 2 GAGAN (GPS Aided Geo Augmented Navigation) transponders
Mass: Approximately 3,164 kg (6,974 lbs)
Power: 6,700 watts
Expected Lifespan: 12 years
Current Uses -
Utilizes GSAT-15 for broadcasting free-to-air TV channels.
Leases capacity for various telecommunication services.
Uses the satellite for transmitting television channels
You can find the GSAT-15 satellite frequency list here.