sentences:  It also has monitoring stations in Ahmedabad, Nagpur, Hyderabad, Ajmer, Bangalore, Darjeeling, Gorakhpur, Jalandhar, Goa (Betim), Mangalore, Shillong, Ranchi, Srinagar, Dibrugarh, Visakhapatnam, and Thiruvananthapuram.Set up in 1952, the organization is responsible for conducting exams, issuing licences, allotting frequency spectrum, and monitoring the airwaves.It is also responsible for maintaining the rules and regulations on amateur radio.