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A circulator is an electronic device made out of ferrous materials which allow it to channel signals through specific pathways. They have three or more ports, and when signals enter one port, they...

Accuracy is the way in which the output level of a signal generator is controlled. An attenuator maintains a correct signal throughout the feedback loop for each step in the process of generating...

Satellites communicate through a complex system of telemetry that connects and transmits signals between satellites and earth-bound stations. This system begins with TT&C (telemetry, tracking,...

A record is placed on the turntable and set in motion by moving the tonearm. A stylus (needle) is attached to the end of the tonearm. It "reads," through vibration, the notched grooves in the...

Radio antennas have been around for over a century, first used in the Swiss Alps in 1895. Since then, the antenna has developed into an integral part of modern technology. When listening to your...

A tape player's ability to make music starts with the device that stores the musical information: the cassette tape itself. An audio cassette is a relatively simple machine. It consists of two...

Digital radio varies from traditional radio because it has information encoded differently on its carrier waves. Amplitude modulation (AM) or frequency modulation (FM) radio tends to be...