Example of Modulated Amplitude

It is called modulated amplitude, To a type of signal that is transmitted in a linear way by means of modulation, this modulation changes due to the circumstance or shape of the signal.

Because it is a wide signal, it has a fairly good reception, and in this type of signal there are signals such as:

• Short wave
• The medium wave and
• VHF, which is a television sound signal.

Despite being a broad spectrum signal and that it can be captured in multiple places without having important complications, this signal is widely altered by climatic issues, losing or losing tune.

This strong signal variation is due to the modulated amplitude being a low frequency signal.

So that the signal from modulated amplitude, It requires a transmitter that works by means of oscillators; This transmitter has the defect of requiring a very high energy consumption, making the radio broadcast of modulated amplitude.

The modulated amplitude consists of the variation in the amplitude of a wave or signal that is base or carrier depending on the message and another wave or signal that contains the message that you want to transmit.

Amplitude modulated receivers were, from the beginning, devices that could be manufactured at a lower cost than those of Modulated frequency, and it is for this reason that they were widely disseminated until the 1970s, when FM absorbed the radio market.

The sign of modulated amplitude, covers frequencies from 540 to 1600 kilohertz.

The rise of this signal is due to the radio device that was invented by Guillermo Marconi, who is from the United Kingdom, it has a great influence from the works of:

• Alexander Stepanovich Popov of Russia
• Nicolas Tesla of the United States
• Julio Cabrera from Spain

Radio has also had great influence on the global airline industry, as it has been the basis of communications with the control towers.