34.120

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Introduction

34.120 is a type of frequency modulation, also known as FM, that is used to transmit information. It has a wide range of applications in the modern world including radio and television broadcasting, digital audio broadcasting, satellite television, telephone systems, and more. The working principle of FM is based on the encoding and decoding of electrical signals so that a remote transmitter can send and receive sound or other data.

History of FM

The first patent for a form of FM was issued in 1933 to Edward Kellogg and Arnold Law, two engineers in the United States. While their patent was originally intended for use in facsimile transmission, FM has since been adapted to a variety of different applications and is now used in a variety of forms for transmitting data.

Applications

FM is widely used in transmitting sound, most notably in radio and television broadcasting. FM signals are sent out on a carrier wave and modulated by audio signals to send out music, speech, or other audio information. FM radio is widely used for music or talk radio, while FM TV is used to broadcast analog and digital television.FM is also used to transmit data between two or more points. Because of its ability to carry both audio and digital data, FM is used in telephone systems for voice, fax, and data transmissions. It is also used in digital audio broadcasting (DAB), satellite television, and cable TV services.

Advantages of FM

FM has several advantages over other methods of transmitting sound or data. For one, FM uses less power than other methods, making it more efficient and cost-effective. Additionally, because FM signals are more resistant to noise than other methods, the sound or data transmitted is of greater quality. Another advantage of FM is that the signal gets stronger the farther it travels, which allows for greater coverage and range. This is why FM is used for long-distance communication.

Disadvantages of FM

The main disadvantage of FM is that the sound or data quality decreases as it travels further. This is because the signal is weakened the farther away it gets from the source. Additionally, FM signals can be interfered with by local radio signals, causing the signal to become distorted or lost altogether.

Working Principle of FM

The working principle of FM is based on the concept of encoding and decoding electrical signals. FM signals are modulated by an audio signal and then transmitted to a receiving station. At the receiving station, the signal is demodulated, and the audio information is decoded for playback.

Conclusion

FM technology is used in a variety of applications in the modern world including radio and television broadcasting, digital audio broadcasting, satellite television, telephone systems, and more. This type of frequency modulation has several advantages such as low power usage, greater range, and better sound quality. However, FM signals also have some disadvantages such as decreased sound quality with distance, and interference from local radio signals. The principles of encoding and decoding signals are the basis for the technology of FM as it is used in today\'s world.

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