What are the differences between AM and FM radio?
AM is amplitude Modulation, and FM is Frequency Modulation. With both AM and FM, a carrier wave must be broadcasted. And it is just that… A carrier wave for the information. A greyhound bus for the information you are trying to tune in. (music, etc.). The carrier wave is at a particular frequency, which is singled out as you tune in your radio station. All other frequencies are filtered out. Simplified explanation: The difference is how the “information” rides on that carrier frequency. And the names give it away. In AM or Amplitude Modulation, the information is added to the amplitude of the carrier signal. When your receiver receives the signal, it does an analog sample of the wave to determine it’s average strength, then demodulates the differences in the amplitude to pull out the original information. This is the worst and most inaccurate way of demodulation, for the signal strength is continuously changing, with the analog demodulator always working “behind the times”. This is w
