building both a transmitter and receiver. At the most basic level, AM radio works by generating a carrier wave with an oscillator, and then modulating the amplitude with an audio signal.

The transmitter and receiver For the transmitter, he turned an Arduino Pro Micro into a USB sound card which he could plug into his laptop. That outputs both the audio signal and a 40 kHz carrier ...

Lockheed Martin MS2, Owego, New York, has been awarded a maximum $30,814,317 delivery order (THD9) against contract SPRWA1-13-D-2000 for transmitter receivers. This is a firm-fixed-price contract.

He designed a transmitter to send and a receiver to detect radio waves. By the end of the century Marconi had managed to send signals over several miles with no wires, and the idea was taking hold ...

Space communication systems are increasingly based on optical laser beams rather than radio waves ... that the transmitter is ...