Grade 7 Transmission Process of Radio and Television

Shree January 25, 2020 Grade 7 OBT

Radio:

AM	FM
It stands for Amplitude Modulation.	It stands for Frequency Modulation.
It describes the displacement of waves.	It describes the waves per second.
It has poor sound quality.	It has high sound quality.
It normally ranges from 535 to 1705 kilohertz.	It ranges from 88 to 108 megahertz.
Transmitter and receiver are simple.	Transmitter and receiver are more complex.

Process of Transmission
1. Sound wave is produced in radio station.
2. Sound wave is converted into electric signal.
3. Signal are amplified.
4. signals are sent to transmitter.
5. Transmitter converted into radio wave and transmits all over.
6. Radio receives the signal and listened through speaker.