How Radios Work

• The antenna catches and receives all the info 
• Antennas are sometimes called receivers 
• A transmitter is a different type of antenna
• Transmitters turn the info into a radio wave so it can travel around the world or even to space and back
• The electrons in the radio waves bounce back and fourth and that causes invisible electromagnetic radiation and that is what causes the radio waves
• Radio waves move at the speed of light
• The waves that travel at the speed of light take our radio program with them
• The first radio antenna was about 60-100 ft tall
• The first antennas were made out of copper
• On radios you have 2 different antennas for the different frequencies on AM radio and FM radio
• AM radio signals have a frequency of about 1000 kHz
• FM radio signals have a frequency of about 100 mHz