Radio communication , Physics

Assignment Help:

Production of sound messages by a microphone in a radio station (studio).

1) Audio frequency generation.
2) Generation of r.f. carrier wave.
3) Modulation in a transmitter,
b) 4) Transmitting antenna on a tower,
c) Radio receiver,
5) Receiving antenna,
6) Tuning circuits,
7) Detector (demodulator),
8) Amplifier,
9) Speaker.

Production of sound and modulated waves : In the studio, the music or song is converted into electrical signals using a microphone. These signals are in the audio frequency (a.f) range. An osillator produced suitable r.f. carrier wave.

Radio transmitter or modulator: The a.f. signal and r.f. waves are combined in the transmitter. The modulated (combined) waves are fed for an antenna fixed on a tower. This transmitting antenna broadcasts the modulated r.f. waves into space. 

Radio Receiver: The aerial of a radio receiver receives the modulated waves transmitted by various radio stations. The tuning circuit inside the radio set selects only the desired signal. The detector circuits demodulates the modulated signals. Then the a.f. signal is fed to an amplifier. The amplified electric signals are fed to a speaker and converted into the music or song.

1227_radio communication.png


Related Discussions:- Radio communication

Define wave front, A wave front is a line or surface on which the disturban...

A wave front is a line or surface on which the disturbance has the similar phase at every position. If the source is periodic, it generates a succession of ray front, each of the s

Aac (all aluminium standard conductors), AAC (All Aluminium standard Conduc...

AAC (All Aluminium standard Conductors) Standard conductors are the conductors made of thin wires of small cross-section and bunched together. They are made by twisting the wir

Explain current and voltage relationship for two resistors, The current/vol...

The current/voltage relationship for two resistors A and B is as shown in Figure. Verify the value of the resistance of every resistor.

How fast is the submarine travelling - sound waves, A submarine is travelli...

A submarine is travelling toward a stationary detector. If the submarine emits a 260-Hz sound that is received by the detector as a 262-Hz sound, how fast is the submarine trav

Explain electrolysis, The phenomenon of decomposition of electrolyte soluti...

The phenomenon of decomposition of electrolyte solution into ions on passing the current by it is called electrolysis. Practical functions of electrolysis are Electrotyping, ext

How far does the cue ball travel after strikes other ball, A cue ball on a ...

A cue ball on a billiards table travels at 1.0 m/s for 2.0 s. After striking another ball, it travels at 0.80 m/s for 2.5 s at an angle of 60.0° from its original path. a. How

Electric potential of a solid object, Which statement concerning the electr...

Which statement concerning the electric potential of a solid object made out of a perfectly conducting medium is most correct? Answer: It is the electric field which is ze

Luminous flux and laser, Luminous flux and LASER: The luminous flux of...

Luminous flux and LASER: The luminous flux of a light source is measured in the units of LUMEN (lm). Lumen (lm) is the amount of light emitted per second by uniform (point) so

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd