"AM" stands for "Amplitude Modulation," a technique used in electronic communication, most commonly in radio broadcasting. In AM, the amplitude, or strength, of a carrier wave is varied in proportion to the audio signal being sent. This allows the transmission of sound over long distances, making it a popular choice for radio stations. AM radio operates in the medium frequency (MF) band, typically between 530 and 1700 kHz. It is known for its ability to cover large areas, especially at night when atmospheric conditions improve signal propagation. However, AM signals are more susceptible to noise and interference compared to FM (Frequency Modulation) signals.