How does radio tune to a particular frequency?

Modern radio tuners use a superheterodyne receiver with tuning selected by adjustment of the frequency of a local oscillator. This system shifts the radio frequency of interest to a fixed frequency so that it can be tuned with fixed-frequency band-pass filter.

How does radio tuning work?

In FM (Frequency Modulation) radio, it is the speed (frequency) of the signal that is changed. When you tune in your radio, the dial number indicates the kilo or megaHertz at which the signal is being broadcast. Radio signal uses specific frequency, or how quickly the waves of the field move up and down.

What happens in the radio receiver when you tune it to a particular station?

When we tune a radio receiver, we merely adjust the values of the electronic components to produce vibrations of frequency equal to that of the radio waves which we want to receive. The signal received is then amplified in the receiver set. The phenomenon involved is resonance.

How do you use tune in?

Open the TuneIn Radio app, and play the desired station. In the Now Playing screen you will see Chromecast and AirPlay buttons under the station’s logo. Tap the AirPlay button to select an Airplay-enabled device you would like to listen from. You can also do this from your iOS device’s Control Center.

How do I tune my radio?

How to tune to a radio station on car stereo

1. Press the SOURCE, HOME, or MODE button on the main unit of the car stereo, and then select radio or Tuner.
2. Select band (AM or FM).
3. To tune automatically, touch the SEEK- or SEEK+ button on the Main unit or Screen display.

How does a radio antenna work?

How a transmitter sends radio waves to a receiver.

1. Electricity flowing into the transmitter antenna makes electrons vibrate up and down it, producing radio waves.
2. The radio waves travel through the air at the speed of light.
3. When the waves arrive at the receiver antenna, they make electrons vibrate inside it.

How do radios use resonance?

See graphs. The amplitude modulated radio signal from the tuned circuit is shown at (A). The rapid oscillations are the radio frequency carrier wave. The audio signal (the sound) is contained in the slow variations (modulation) of the amplitude (size) of the waves.

How does radio resonance work?

At resonance, the voltage across the inductor and the voltage across the capacitor are the same at any instant but they are 180 0 out of phase with each other. They cancel each other out so that the voltage drop across RLC circuit is due to just the voltage drop across the resistor alone.