Sun TV Network through its subsidiary Kal Radio will be launching its FM radio station at Rajahmundry under the brand 'S FM' tomorrow. The station can be heard at 93.5 MHz frequency in Rajahmundry.With the launch of the FM station, the total operational FM stations of Sun TV goes up to 20 as it already operates at Chennai, Coimbatore, Tirunelveli, Visakhapatnam, Bangalore, Hyderabad, Jaipur, Bhubaneswar, Tirupati, Madurai, Tuticorin, Lucknow, Bhopal, Pondicherry, Kozhikode (Calicut), Indore, Vijayawada, Varanasi and Tiruchy.The company hold licenses for 45 FM radio stations across India, and will be one of the largest radio broadcasters in India when all the remaining 25 stations become operational. The programmes on S FM will cater for the audience from all age groups.