AMD system with frequency range 530 -1600 khz (kilohertz) communicate using radio waves sounds mixed into the so-called "carrier wave" by the amplitude of the carrier wave is changed by the acoustic wave .
Emmy-system frequency range 530-1600 kHz (kilohoenta) to communicate by using sound waves to blended radio waves are called "carrier wave". By the carrier wave's amplifier-change according to the signal wave sounds คลื่.
The AM frequency range 530 - 1600 kHz (kilohertz) communicate using sound waves mixed into the radio called "carrier wave" by the amplitude of the carrier signal to change sound waves lap