1. Radio As A means of Communication

4. With this system they can reach around 4800 km.

6. In 1823, Samuel Morse invented Telegraph. It is also known as Morse Code Telegraph became so much popular at that time Wire was used for communication in telegraph. It was its limitation to limit the communication

7. After some experiments he was able to send his waves up to 14 km. The image shown here is the tower from where Marconi started wireless communication

8. Electro Magnetic Waves In 1894, Italy reach family’s son Guglielmo Marconi had started experiments of wire less communication. His first experiment in Briton was at the top of the General Post office Building. His waves were traveled 275 meters.

9. Jhon Fleming started John Fleming who was at Imperial College London, had started experiments for making this waves more powerful & more clear. For this he had invented a Vacuum Tube.

10. Canadian scientist Dr. Lee De Forest made it more effective. Dr. Forest broadcasted his speech form radio on 31st Dec. 1906. In 1908 Dr. Forest Broadcasted a recorded music form the top Eiffel Tower, which was heard up to 500 miles.

11. When wireless communication started at that time people were using this informally, if some ships had installed instruments. In 1910 US Congress passed a law under which every passenger ship must be using Radio Equipment and a trained Radio Operator.

13. At that time, becuase of the radio 700 lives were rescued

15. “Walkie- Talkie” is the first transmitter/ receiver that helped human talk with the walk The name was given by Motorola SCR-300. It was manufactured by Galvin Manufacturing company. It was very much used

16. In 1897 wireless telegraph & signal co. ltd. was started. It was the first electronic communication company . In 1919 when The Radio Corporation of America established at that time all rights of American Marconi co. ltd. was purchased by RCA.

17. HISTORY AND DEVELOPMENT IN INDIA

19. The Times of India records that a broadcast was transmitted from the roof of its building on August 20, 1921.

20. The first license granted for transmitting a broadcast was given on February 23, 1922.

23. Fielden was its first Controller.

24. Interestingly, ISBS was set up under the Department of Industries and Labour.

27. All India Radio was British property

28. So that young Congress freedom fighters launched their short-lived congress Radio on September 3 1942 on 41.78 meter ‘from somewhere in India.

29. The broadcasts continue from October 15 to 17 to raise the transmitter's power

32. There were only 18 transmitters which increased upto 25 in couple of years.

34. The coverage is 91.79% of the area , serving 99.14% of the people in the largest democracy of the world.

37. On August 15, 1993 a Frequency Modulation (FM) Channel was launched in Bombay, with nine hours of radio which sloats was leased to private producers like Times FM, radiostar and Radio Midday.

39. FAMOUS RADIO STATIONS AND THEIR NAME & ITS SCENERIO 98.3 - Radio Mirchi 101.3 - FM Rainbow 102.9 - Vivdh Bharati 104 - Fever FM 105.6 - Gyaan Vaani 91.1 - Radio City 91.9 - Radio Indigo 92.7 - Big FM 93.5 - S FM 94.3 - Radio One

41. It is also accepted that the that the next phase will give the news sloats to the FM.

42. Reliance and South Asia FM (Sun group) bid for most of the 91 cities.

43. they were allowed only 15% of the total allocated frequencies.

45. Traditionally, radio accounts for 7% to 8% of advertiser expenditures around the world. In India, it is less than 2% at present.

47. In Delhi as well as in Mumbai, 30 per cent of women listen to FM radio.

48. Around 36 per cent men in Mumbai tune into FM channels while 38 per cent in Delhi.

49. In Mumbai, 80 per cent of listening happens at home whereas in Delhi it is 72 per cent.