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An ultrasonic cleaner uses high frequency sound waves to clean materials that are placed into a liquid medium. The sound waves vibrate the medium at a high rate, which causes dirt, stains and...
Crossovers are hardware audio units that separate an audio signal into multiple signals based on frequencies. The crossover then sends the signals to speakers based on the frequency value....
The Realistic Scanner Pro-41 is a police and emergency scanning radio that receives UHF/VHF high and low frequencies on 10 channels and is fully programmable. The scanner also has a built-in...
Devices called "frequency counters" are used to measure the number of oscillations of various audio and radio signals. We are bombarded with hundreds of oscillating electromagnetic waves all the...
Buying a shortwave radio requires research to choose the best model based on your listening interests. Shortwave radios come with many different features and capabilities, from the casual radio...
This article will aid in the building of a VHF (Very High Frequency) Antenna used to aid in broadcasting or receiving radio frequencies 30 to 300 MHz.
A speaker crossover is a piece of audio hardware that is used to apply precision control to audio by dividing signals into multiple signals by frequency. A speaker crossover is used in home,...
The RadioShack Pro 91 trunking scanner allows you to scan and listen to frequencies on police, maritim, ham radio, racing and other bandwidths. It also allows up to 150 programmable channels to...
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...
Whether you're talking AM/FM radio or any of the many other devices that operate using radio waves, the basic science of radio technology is the same. A radio wave is a naturally-occurring...
Radio works by transmitting radio waves, a form of electromagnetic radiation with a frequency below visible light, to carry information. Information is stored in radio waves by modulating one or...
In order to understand the particulars of FM radio, we must start with the basic science behind radio technology. Radio waves are capable of transmitting more than just sound. They are the basis...