Keywords- AIR,FM ,Digital Audio Broadcasting, Internet Radio

Asked question in Paper II June 2011 UGC-NET Mass Communication

In the history of evolution of radio communication in India, the correct sequence is

1. AIR – FM – Digital Audio Broadcasting – Internet Radio
2. FM – AIR – Digital Audio Broadcasting – Internet Radio
3. AIR – Digital Audio Broadcasting – FM – Internet Radio
4. AIR – Internet radio – FM – Digital Audio Broadcasting

Explanation

AIR (1930)

• AIR was established in 1930.
• Officially known since 1956.
• Motto- Bahujanahitaya Bahujanasukhaya
• ‘Akashvani’ was later adopted as All India Radio’s on-air name in 1957.
• ‘Vividh Bharati’ service was launched to complete the Radio Ceylon.

FM (1977)

• FM broadcasting is the method of radio broadcasting using frequency modulation.
• Invented in 1933 by American engineer Edwin Armstrong.
• FM broadcasting begin in India on 23rd July 1977 in Chennai then Madras.
• Radio City in India’s first private FM radio station was started in 2001.

Digital Audio Broadcasting

• The Norwegian Broadcasting Corporation (NRK) launch the first digital audio Broadcasting Channel in the world 1st June 1995.
• The original version of DAB used the MP 2 audio codec.
• Digital Audio Broadcasting (DAB) , also known as digital radio and high definition radio, is audio broadcasting in which analogue audio is converted into a digital signal and transmitted on an assigned channel in the AM or (more usually) FM frequency range.
• Very well suited for mobile reception.

Internet Radio

Internet Radio is a digital audio service transmitted in the internet.