sentences:  Defunct call-signs include CR8 (for Portuguese India), FN8 (for French India), and AC3 (for the former kingdom of Sikkim, which merged with India in 1975).Organisation
  
  The WPC is the only authorised body responsible for regulating amateur radio in India.The WPC has its headquarters in New Delhi with regional headquarters and monitoring stations in Mumbai (Bombay), Kolkata (Calcutta), and Chennai (Madras).