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In 1914, the Marconi Wireless Telegraph Company constructed a 400 KW wireless transmitting station (callsign MUU) in Carnarvon (now spelled as 'Caernarfon') to send transatlantic messages to the US from a 3600' series of parallel wires hung from ten 400-foot masts along the slopes of Cefn Du mountain in Snowdonia (Eryri). The station served ...
At this location, now part of the Cape Cod National Seashore (though no admission is charged if not visiting Marconi Beach), inventor Guglielmo Marconi erected a large antenna array on four 210-foot (64 m) wooden towers, and established a transmitting station powered by kerosene engines that produced the 25,000 volts of electricity needed to ...
A model of Marconi's transmission towers at his first wireless station in Glace Bay. Marconi National Historic Site, located at Table Head in Glace Bay, is the site of Guglielmo Marconi's first transatlantic wireless station, callsign VAS, and the first wireless message sent from North America to Europe on December 15, 1902. [1]
Wi-Fi positioning system (WPS, WiPS or WFPS) is a geolocation system that uses the characteristics of nearby Wi‑Fi access points to discover where a device is located. [1]It is used where satellite navigation such as GPS is inadequate due to various causes including multipath and signal blockage indoors, or where acquiring a satellite fix would take too long. [2]
Some applications include wireless security cameras, police mug shot software, and location-based advertising. In 2007, some companies with existing cell sites offered high-speed wireless services where the laptop owner purchased a PC card or adapter based on EV-DO cellular data receivers or WiMAX rather than 802.11b/g. A few high-end laptops ...
PC Connection, Inc. was founded in 1982 by Patricia Gallup and David Hall. The co-founders met while serving as a support crew to hikers on the Appalachian Trail. [4]The company's first headquarters occupied a former woodworking mill in Marlow, NH [4] population 542 at the time.
Traffic indication map (TIM) is a structure used in 802.11 wireless network management frames. The traffic indication map information element is covered under section 7.3.2.6 of 802.11-1999 standard. [1] The IEEE 802.11 standards use a bitmap to indicate to any sleeping listening stations that the access point (AP) has buffered data waiting for it.
In February 2014, Skyhook Wireless was acquired by True Position Inc., a subsidiary of Liberty Broadband. [8] In 2016, the two companies merged under the Skyhook brand, now under Liberty Broadband, which is a part of the Liberty Media family. Skyhook also introduced a range of products: Retailer Personas, Power Personas, and On-Demand Personas. [9]