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A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance, espionage and police investigations. Self-contained electronic covert listening devices came into common use with ...
TV Ears Digital is the wireless voice clarifying TV listening device that offers digital connectivity and is compatible with Dolby Digital, SRS, and PCM products. The system is light, weighing in at only two ounces, comes with an adjustable tone control, and ergonomically angled foam ear tips.
Radio jamming. Radio jamming is the deliberate blocking of or interference with wireless communications. [1] [2] In some cases, jammers work by the transmission of radio signals that disrupt telecommunications by decreasing the signal-to-noise ratio. [3]
The Zvox AV52 are pretty standard Bluetooth headphones, but they employ AccuVoice technology so you can hear voices more easily, plus active noise canceling to help reduce outside distractions ...
History of radio. The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of ...
The Thing (listening device) The Thing, also known as the Great Seal bug, was one of the first covert listening devices (or "bugs") to use passive techniques to transmit an audio signal. It was concealed inside a gift given by the Soviet Union to W. Averell Harriman, the United States Ambassador to the Soviet Union, on August 4, 1945.
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