भारतीय प्रसारण कंपनी (IBC) ने 23 जुलाई, 1927 को बॉम्बे स्टेशन से रेडियो प्रसारण शुरू किया था। किस वर्ष इस सेवा का नाम बदलकर 'ऑल इंडिया रेडियो' किया गया था?

In which year was the Indian State Broadcasting Service renamed to All India Radio (AIR)?

National Broadcasting Day is observed on July 23 across the country every year. On this day in 1927, the Indian Broadcasting Company started radio broadcasting from which of the following stations?