Radio Waves (HT only)

• What can radio waves be produced by?

  Oscillating currents in electrical circuits
• What is the basis of a radio transmitter?

  Radio waves produced by oscillating currents
• What happens when radio waves are absorbed by another material?

  They may create an alternating current
• How do radio waves induce oscillations in electrical circuits?

  By creating alternating currents with the same frequency
• What do oscillating electrical waves carry from transmitter to receiver?

  Signal from transmitter to receiver
• What is the role of oscillating electrical current in a transmitter?

  It induces electrical current in the receiver
• What is induced in the receiver by oscillating electrical current?

  Electrical current in the receiver
• What is the relationship between the transmitter and receiver in radio communication?

  Transmitter sends signals to the receiver
• How does the oscillating electrical current in the transmitter affect the receiver?

  It induces electrical current in the receiver