But for a weekend project, [Vinod.S] took the ultrasonic transmitter and receiver from a distance-meter module and used amplitude modulation ... modulated sounds waves. The transmitter and ...

AM, or amplitude modulation, was the earliest way of sending voice over radio waves. That makes sense because it is easy to modulate a signal and easy to demodulate it, as well. A carbon ...

The basis of any radio signal or transmission is the carrier. This consists of an alternating waveform like that shown in Figure 3-1. This is generated in the transmitter ... amplitude in line with ...

In the case of AM radio ... at maximum modulation. Be sure that any repairs made to a transmitter power supply do not limit the peak available voltage and current. In its basic form FM modulation can ...

Radio waves at a particular frequency ... In one of the most basic modulation types, amplitude modulation (AM, as in AM radio), the transmitter will vary the magnitude of the transmitted signal ...

Radio waves are a type of electromagnetic radiation ... as well as commercial AM (amplitude modulation) radio, according to RF Page. AM radio frequency bands fall between 535 kilohertz to 1.7 ...

In this context, transmitters—which send information via radio waves ... adopted transmitter type, digital polar transmitters ...

Vacuum tubes had not yet been developed and Arc transmitters (and later the Alexanderson alternator) were the main sources of continuous waves. Modulation of such ... changing without a change in ...

Frequency modulation ... the frequency of the radio carrier must be changed in line with the amplitude of the incoming audio signal. When the audio signal is modulated on to the radio frequency ...

Radio frequency (RF) refers to the part of the electromagnetic spectrum where electromagnetic waves can be generated ... and reception of data. Amplitude Modulation (AM) and Frequency Modulation ...