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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
An example of a Wireless Emergency Alert on an Android smartphone, indicating a Tornado Warning in the covered area. Wireless Emergency Alerts (WEA, formerly known as the Commercial Mobile Alert System (CMAS), and prior to that as the Personal Localized Alerting Network (PLAN)), is an alerting network in the United States designed to disseminate emergency alerts to mobile devices such as cell ...
Near-field communication ( NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 centimetres (1.6 in) or less. [1] NFC offers a low-speed connection through a simple setup that can be used for the bootstrapping of capable wireless connections. [2]
Optical wireless communication (OWC) refers to transmission in unguided propagation media through the use of optical carriers: visible, infrared (IR), and ultraviolet (UV) radiation. Signalling through beacon fires, smoke, ship flags and semaphore telegraph can be considered the historical forms of OWC. [3]
Wi-Fi Protected Access ( WPA ), Wi-Fi Protected Access 2 ( WPA2 ), and Wi-Fi Protected Access 3 ( WPA3) are the three security certification programs developed after 2000 by the Wi-Fi Alliance to secure wireless computer networks. The Alliance defined these in response to serious weaknesses researchers had found in the previous system, Wired ...
Raycon has an amazing selection of best selling earbuds, headphones and more which rival the most popular brands — but best of all, they’re significantly less expensive. And right now, you can ...
Characteristics. Techniques. v. t. e. Wireless communication (or just wireless, when the context allows) is the transfer of information ( telecommunication) between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves.
Mode 3 (telephone) In telephony, mode 3 is a method of line sharing in which the line passes through a device (the mode 3 device) to connect to other devices. [1] This enables the mode 3 device to control the line, and gain priority in need. It is a common alternative to parallel connection. For example, a dial-up computer modem is generally ...