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Companies like Visteon Corp., Peiker acustic, RAYTEL, Parrot SA, Novero, Dension, S1NN and Motorola manufacture Bluetooth hands-free car kits for well-known brand car manufacturers. Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number ...
The development of the "short-link" radio technology, later named Bluetooth, was initiated in 1989 by Nils Rydbeck, CTO at Ericsson Mobile in Lund, Sweden. The purpose was to develop wireless headsets, according to two inventions by Johan Ullman, SE 8902098-6, issued 1989-06-12 and SE 9202239, issued 1992-07-24 .
Industry. Two-way radio. Founded. 1970. Headquarters. Austin, Texas. Setcom Corporation is an American manufacturer of communications equipment for police motorcycle officers, firefighters, rescue personnel and industrial users. Setcom supplies public safety professionals in all fifty states, most major US cities, and more than twenty countries ...
A walkie-talkie, more formally known as a handheld transceiver ( HT ), is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald Hings, radio engineer Alfred J. Gross, Henryk Magnuski and engineering teams at Motorola. First used for infantry, similar designs were ...
Early (RCA-patent-era) superhets were often used with the relatively expensive moving coil speakers, which offer a quality of sound unavailable from moving iron speakers. Most post-1932 commercial radios were superhets, and this technology is still in widespread use in radio receivers today, implemented with transistors or integrated circuits.
Elize Ryd wearing in-ear monitors during a concert in 2018. In-ear monitors, or simply IEMs or in-ears, are devices used by musicians, audio engineers and audiophiles to listen to music or to hear a personal mix of vocals and stage instrumentation for live performance or recording studio mixing. They are also used by television presenters to ...
The antennas contained in mobile phones, including smartphones, emit radiofrequency (RF) radiation ( non-ionizing "radio waves" such as microwaves ); the parts of the head or body nearest to the antenna can absorb this energy and convert it to heat. Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation ...
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