Question

In order to transmit information via radio waves, the waves need to be changed somehow. For car radios this can happen in two ways. For AM radios, which property of the carrier wave is modulated before it is transmitted?a.amplitudeb.frequencyc. period

Answer 1

a.amplitude

Step-by-step explanation:

AM (amplitude modulation) is the process of changing the amplitude of a relatively high frequency carrier according to the amplitude of the modulating signal. With amplitude modulation, information is printed on the carrier in the form of amplitude changes. Amplitude modulation is a relatively cheap, low-quality form of modulation that is used in broadcasting audio and video signals. The commercial AM broadcasting band ranges from 535 to 1605 kHz.