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The head mount freed the switchboard operator's hands, so that they could easily connect the wires of the telephone callers and receivers. [10] The head-mounted telephone receiver in the singular form was called a headphone. [11] [12] These head-mounted phone receivers, unlike modern headphones, only had one earpiece. [13] By the 1890s a ...
A handset is a component of a telephone that a user holds to the ear and mouth to receive audio through the receiver and speak to the remote party using the built-in transmitter. In earlier telephones, the transmitter was mounted directly on the telephone itself, which was attached to a wall at a convenient height or placed on a desk or table.
Harman Kardon designed and produced some of the first high fidelity audio products in the 1950s. The company's first product was an FM tuner.. Early integrated receivers (with a tuner, preamplifier and power amplifier) were an attempt to create, improve and produce high fidelity performance in a single unit.
Model 302 telephone. The model 302 telephone is a desk set telephone that was manufactured in the United States by Western Electric from 1937 until 1955, and by Northern Electric in Canada until the late 1950s, until well after the introduction of the 500-type telephone in 1949. The sets were routinely refurbished into the 1960s.
A portable battery-powered AM/FM broadcast receiver, used to listen to audio broadcast by local radio stations. A modern communications receiver, used in two-way radio communication stations to talk with remote locations by shortwave radio. Girl listening to vacuum tube console radio in the 1940s.
Zenith Electronics, LLC, is an American research and development company that develops ATSC and digital rights management technologies. It is owned by the South Korean company LG Electronics. Zenith was previously an American brand of consumer electronics, a manufacturer of radio and television receivers and other consumer electronics, and was ...
AN/VRC-12. The AN/VRC-12 is the lowest-numbered element of a family of vehicular VHF - FM synthesized vehicular radio communications systems developed by Avco Corporation [ 1] and introduced around 1963 and used extensively by the U.S. military during the Vietnam War and for many years after. It replaced the earlier AN/GRC-3 through 8 series ...
Standalone – devices that have all necessary components to provide virtual reality experiences integrated into the headset. Mainstream standalone VR platforms include: Oculus Mobile SDK, developed by Oculus VR for its own standalone headsets and the Samsung Gear VR. (The SDK has been deprecated in favor of OpenXR, released in July 2021.)
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