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The British Army 's Wireless Set, Number 10, was the world's first multi-channel microwave relay telephone system. [1] It transmitted eight full-duplex (two-way) telephone channels between two stations limited only by the line-of-sight, often on the order of 25 to 50 miles (40 to 80 km). The stations were mounted in highly mobile trailers and ...
Raymond A. Litke. Raymond A. Litke (1920-1986) was an American electronic engineer, the inventor of a practical wireless microphone, and the first to patent the wireless microphone. He was born and raised on a farm near Alma, Kansas, but spent most of his adult life in San Jose, California .
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.
In 1953, Shure introduced their first wireless microphone system for performers, and in 1959, they introduced the Unidyne III capsule based 545 Microphone, [4] which was the predecessor to the SM57, which would be introduced, along with the SM58, six years later. Shure also produced portable equipment for broadcast field recording like Vocal ...
A stenomask is a hand-held microphone built into a padded, soundproof enclosure that fits over the speaker's mouth or nose and mouth. Some lightweight versions may be fitted with an elastic neck strap to hold them in place while freeing the user's hands for other tasks. The purpose of a stenomask is to allow a person to speak without being ...
JOE REEDY. August 15, 2024 at 10:32 PM. EL SEGUNDO, Calif. (AP) — If Colin Kaepernick wants to join the Los Angeles Chargers, it will not be until next year at the earliest. And it will only be ...
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