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  2. Signal strength in telecommunications - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_in...

    In telecommunications, [1] particularly in radio frequency engineering, signal strength refers to the transmitter power output as received by a reference antenna at a distance from the transmitting antenna. High-powered transmissions, such as those used in broadcasting, are expressed in dB - millivolts per metre (dBmV/m).

  3. Wireless Emergency Alerts - Wikipedia

    en.wikipedia.org/wiki/Wireless_Emergency_Alerts

    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 ...

  4. PrimeCo - Wikipedia

    en.wikipedia.org/wiki/PrimeCo

    PrimeCo Personal Communications, L.P. (later known as Chicago 20 MHz, LLC [1]) was a joint venture of Bell Atlantic, Nynex, US West and AirTouch Communications, and was the first wireless telecommunications provider to turn up CDMA service on the PCS (1900-MHz) band in November 1996. [2] When the company was founded, it had its headquarters in ...

  5. Chunghwa Telecom - Wikipedia

    en.wikipedia.org/wiki/Chunghwa_Telecom

    Chunghwa Telecom Co., Ltd. Chunghwa Telecom Company, Ltd. ( Chinese: 中華電信股份有限公司; pinyin: Zhōnghuá Diànxìn; Wade–Giles: Chung1-hua2 Tien4-hsin4, lit. Chinese Telecom Company) is the largest integrated telecom service provider in Taiwan, [1] and the incumbent local exchange carrier of PSTN, Mobile, and broadband services ...

  6. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the Earth ...

  7. Telecommunications in Brazil - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_in_Brazil

    Brazil has both modern technologies in the center-south portion, counting with LTE, 3G HSPA, DSL ISDB based Digital TV. Other areas of the country, particularly the North and Northeast regions, lack even basic analog PSTN telephone lines. This is a problem that the government is trying to solve by linking the liberation of new technologies such ...

  8. International Phonetic Alphabet chart - Wikipedia

    en.wikipedia.org/wiki/International_Phonetic...

    For the distinction between [ ], / / and , see IPA § Brackets and transcription delimiters. The following is the chart of the International Phonetic Alphabet, a standardized system of phonetic symbols devised and maintained by the International Phonetic Association. It is not a complete list of all possible speech sounds in the world's ...

  9. Wireless - Wikipedia

    en.wikipedia.org/wiki/Wireless

    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.

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