A mini project and implimentation on SIMPLE FM-TRANSMITTER
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28-02-2011, 04:30 PM

presented by:
T.U.M Swarna kumari
J.V Ravi Teja
G.Suresh Kumar
N.Sudheer Babu

.ppt   newwwww.ppt (Size: 1.89 MB / Downloads: 904)
A mini project and implimentation on SIMPLE FM-TRANSMITTER

 The aim of the project and implimentation is to develop a simple FM-Transmitter to be used specialized applications such as in radio broadcasting and telecommunications etc.
 Frequency modulation has several advantages over the system of amplitude modulation (AM) used in the alternate form of radio broadcasting. The most important of these advantages is that an FM system has greater freedom from interference and static.
 commercial FM radio stations are assigned frequencies between 88 and 108 MHz and will be the intended frequency range of transmission.
 Modulation is the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with respect to a modulating signal
 Here the three key parameters of a periodic waveform are its amplitude ("volume"), its phase ("timing") and its frequency ("pitch"), all of which can be modified in accordance with a low frequency signal to obtain the modulated signal. Typically a high-frequency sinusoid waveform is used as carrier signal
 Amplitude modulation
 a type of modulation where amplitude of a information signal vary while frequency and phase kept constant.
 Frequency modulation
 a type of modulation where frequency of information signal vary while amplitude and phase kept constant.
 Phase modulation
 a type of modulation where phase of information signal vary while amplitude and frequency kept constant.
o Frequency modulation is a type of modulation where the frequency of the carrier is varied in accordance with the modulating signal. The amplitude of the carrier remains constant.
o The information-bearing signal (the modulating signal) changes the instantaneous frequency of the carrier. Since the amplitude is kept constant, FM modulation is a low-noise process and provides a high quality modulation technique which is used for music and speech in hi-fidelity broadcasts
o For FM: the carrier’s frequency is proportional to the baseband’s amplitude, the carrier increases frequency proportional to the positive magnitude of the baseband and decreases frequency proportional to the negative magnitude of the baseband.
• Frequency modulation have some advantages over amplitude modulation, FM is not sensitive to the amplitude noise, and have high efficient use of transmitted power
• Lesser distortion. Frequency modulated wave is less susceptible to intereferences from buildings, traffic etc which provides improved signal to noise ratio (about 25dB) w.r.t. to man made interference.
• Waves at higher frequencies can carry more data than the waves at low frequency.
• Smaller geographical interference between neighboring stations.
• Less radiated power.
• Well defined service areas for given transmitter power
 Transmitter which generates frequency modulated signal is known as FM-Transmitter
• Non-commercial broadcasting from 88 – 90 MHz (WFM)
• Commercial broadcasting from 90 – 108 MHz (WFM)
• Television audio
• Public Service communications
• Radio Service Communications
• Point-to-point microwave links used by telecommunications companies

betty varghese
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22-01-2012, 09:52 AM

could you give me the procedure to make the project and implimentation on simple fm transmitter and an estimate cost of making it.
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23-01-2012, 12:12 PM

to get information about the topic A mini project and implimentation on SIMPLE FM-TRANSMITTER full report refer the link bellow

http://topicideas.org/how-to-a-mini-project and implimentation-on-simple-fm-transmitter
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10-02-2012, 09:40 AM

to get information about the topic Simple FM transmitter full report ,ppt and related topic refer the link bellow

http://topicideas.org/how-to-a-mini-project and implimentation-on-simple-fm-transmitter




Thinking To Register

28-06-2012, 01:17 AM

hello sir,
can i have all the materials required and the procedure for the SIMPLE FM TRANSMITTER?

seminar flower
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19-09-2012, 12:06 PM


.doc   SIMPLE FM.doc (Size: 369.5 KB / Downloads: 54)


All India Radio (AIR), officially known since 1956 as Akashvani (Devanagari: ākāshavānī literally Sky's Voice), is the radio broadcaster of India and a division of Prasar Bharati. Established in 1936,[1] it is the sister service of Prasar Bharati's Doordarshan, the national television broadcaster. All India Radio is one of the largest radio networks in the world. Its headquarters is at the Akashvani Bhavan in New Delhi. Akashvani Bhavan houses the Drama Section, the FM Section and the National Service. Doordarshan Kendra (Delhi) offices are also located on the sixth floor at Akashvani Bhavanl languages, often connecting with other state-run radio stations. n British India, broadcasting began in July 1927 with programmes by the Radio Club of Bombay and other radio clubs. According to an agreement of 1926, the private Indian Broadcasting Company (IBC) was authorized to operate two radio stations; the Bombay station began on 23 July 1927, and the Calcutta station followed on 26 August 1927. On 1 March 1930, however, the company went into liquidation. Lionel Fielden was appointed as the first Controller of Broadcasting, who took over,from BBC. The government took over the broadcasting facilities, beginning the Indian State Broadcasting Service (ISBS) on 1 April 1930 (on an experimental basis for two years, and permanently in May 1932). On 8 June 1936 the ISBS was renamed All India Radio.
On 1 October 1939 the External Service began with a broadcast in Pushtu; it was intended to counter radio propaganda from Germany directed to Afghanistan, Iran and the Arab nations. When India became independent in 1947 the AIR network had only six stations (in Delhi, Bombay, Calcutta, Madras, Lucknow, and Tiruchi); the total number of radio sets at that time was about 275,000. On 3 October 1957 the Vividh Bharati Service was launched, to compete with Radio Ceylon. Television broadcasting began in Delhi in 1959 as part of AIR, but was split off from the radio network as Doordarshan on 1 April 1976.[2] FM broadcasting began on 23 July 1977 in Madras, and was expanded during the 1990s.[3]


Nowadays, with the development of the society and technology, if you wish to take your music on the highway with you, maybe your iPod is the greatest and most convenient option. But if you ride the vehicle, how can you connect it ? Which is best method ? And what options have you got?
There are many options depending on your car and stereo equipment you have installed, there are a selection of ways of connecting your iPod to your Vehicle. The Kits range from fully integrated connections that emulate your CD changer providing CD quality or better audio through your stereo, through to FM Transmitters that connect to your iPod and transmit radio signals to your aerial. The simple truth is there are thousands of options and a number of different brands that offer slightly different functions.
The more basic of the options start with simple FM Transmitters; they are a simple kit but can provide good results. Simple FM Transmitters plug into the bottom of the iPod / iPhone and translate your music being played on your iPod to a radio signal, The radio signal is then broadcast to the local area (Anybody utilizing the same frequency can listen to your music / podcast etc).
The simple FM Transmitters are usually the less expensive option when purchasing an iPod car kit, however keep in mind the area you live in or commute to before buying. If the area is heavy with radio signals it is possible to receive a poor signal, usually resulting interference or a duplicate signal played outrageous of the original frequency so you have two sources of audio being played.


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