MAIN BROADCASTSRE AND LOUDHAILER SYSTEM FOR, NGOPV Proj 1, OBS, INSTALLATION AND COMMISSIONING, SPARES, TECHNICAL DOCUMENTATION, SERVICE, ENGINEER CHARGES, TRAINING, MAIN BROADCASTSRE, AND LOUDHAILER SYSTEM FOR NGOPV Proj 2, MAIN, BROADCASTSRE AND LOUDHAILER SYSTEM FOR NGOPV Proj, 3, NGOPV Proj 4, MAIN BROADCASTSRE AND LOUDHAILER, SYSTEM FOR NGOPV Proj 5, MAIN BROADCASTSRE AND, LOUDHAILER SYSTEM FOR NGOPV Proj 6, 7