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Communications In The United States Virgin Islands
Communications in the United States Virgin Islands The following statistics are from the CIA World Factbook, unless otherwise indicated. Telephone Telephones - main lines in use: 74,200 (2008) The traditional wire line provider in the United States Virgin Islands is Viya. Viya is a subsidiary of ATN International Telephones - mobile cellular: 80,300 (2005) The islands are served by Viya, Claro Puerto Rico, and T-Mobile US. Telephone system: :''general assessment:'' modern system with total digital switching, uses fiber-optic cable and microwave radio relay :''domestic:'' full range of services available :''international:'' submarine cable connections to US, the Caribbean, Central and South America;; satellite earth stations - NA Country code / area code +1-340 Radio Radio broadcast stations: 24 radio stations broadcasting (2009) Radios: 107,000 (2003) Television Television broadcast stations: about a dozen television broadcast stations including 1 public TV station; multi-c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Virgin Islands
The United States Virgin Islands,. Also called the ''American Virgin Islands'' and the ''U.S. Virgin Islands''. officially the Virgin Islands of the United States, are a group of Caribbean islands and an unincorporated and organized territory of the United States. The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser Antilles to the east of Puerto Rico and west of the British Virgin Islands. The U.S. Virgin Islands consist of the main islands of Saint Croix, Saint John, and Saint Thomas and 50 other surrounding minor islands and cays. The total land area of the territory is . The territory's capital is Charlotte Amalie on the island of St. Thomas. Previously known as the Danish West Indies of the Kingdom of Denmark–Norway (from 1754 to 1814) and the independent Kingdom of Denmark (from 1814 to 1917), they were sold to the United States by Denmark for $25,000,000 in the 1917 Treaty of the Danish We ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio
Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like aircraft, ships, spacecraf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications In The United States Virgin Islands
Communications in the United States Virgin Islands The following statistics are from the CIA World Factbook, unless otherwise indicated. Telephone Telephones - main lines in use: 74,200 (2008) The traditional wire line provider in the United States Virgin Islands is Viya. Viya is a subsidiary of ATN International Telephones - mobile cellular: 80,300 (2005) The islands are served by Viya, Claro Puerto Rico, and T-Mobile US. Telephone system: :''general assessment:'' modern system with total digital switching, uses fiber-optic cable and microwave radio relay :''domestic:'' full range of services available :''international:'' submarine cable connections to US, the Caribbean, Central and South America;; satellite earth stations - NA Country code / area code +1-340 Radio Radio broadcast stations: 24 radio stations broadcasting (2009) Radios: 107,000 (2003) Television Television broadcast stations: about a dozen television broadcast stations including 1 public TV station; multi-c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications By Country
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that feasible with the human voice, but with a similar scale of expediency; thus, slow systems (such as postal mail) are excluded from the field. The transmission media in telecommunication have evolved through numerous stages of technology, from beacons and other visual signals (such as smoke signals, semaphore telegraphs, signal flags, and optical heliographs), to electrical cable and electromagnetic radiation, including light. Such transmission paths are often divided into communication channels, which afford the advantages of multiplexing multiple concurrent communication sessions. ''Telecommunication'' is often used in its plural form. Other examples of pre-modern long-distance communication included audio messages, such as coded drumbea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet In The United States
The Internet in the United States grew out of the ARPANET, a network sponsored by the Advanced Research Projects Agency of the U.S. Department of Defense during the 1960s. The Internet in the United States in turn provided the foundation for the worldwide Internet of today. Internet connections in the United States are largely provided by the private sector and are available in a variety of forms, using a variety of technologies, at a wide range of speeds and costs. In 2019, the United States ranked 3rd in the world for the number of internet users (behind China and India), with 312.32 million users. As of 2019, 90% of adults in America use the internet, either irregularly or frequently. The United States ranks #1 in the world with 7,000 Internet Service Providers (ISPs) according to the CIA. Internet bandwidth per Internet user was the 43rd highest in the world in 2016. Internet top-level domain names specific to the U.S. include .us, .edu, .gov, .mil, .as (American Samoa), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet In The United States Virgin Islands
Communications in the United States Virgin Islands The following statistics are from the CIA World Factbook, unless otherwise indicated. Telephone Telephones - main lines in use: 74,200 (2008) The traditional wire line provider in the United States Virgin Islands is Viya. Viya is a subsidiary of ATN International Telephones - mobile cellular: 80,300 (2005) The islands are served by Viya, Claro Puerto Rico, and T-Mobile US. Telephone system: :''general assessment:'' modern system with total digital switching, uses fiber-optic cable and microwave radio relay :''domestic:'' full range of services available :''international:'' submarine cable connections to US, the Caribbean, Central and South America;; satellite earth stations - NA Country code / area code +1-340 Radio Radio broadcast stations: 24 radio stations broadcasting (2009) Radios: 107,000 (2003) Television Television broadcast stations: about a dozen television broadcast stations including 1 public TV station; mult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Country Code Top-level Domain
A country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ccTLD identifiers are two letters long, and all two-letter top-level domains are ccTLDs. In 2018, the Internet Assigned Numbers Authority (IANA) began implementing internationalized country code top-level domains, consisting of language-native characters when displayed in an end-user application. Creation and delegation of ccTLDs is described in RFC 1591, corresponding to ISO 3166-1 alpha-2 country codes. While gTLDs have to obey international regulations, ccTLDs are subjected to requirements that are determined by each country’s domain name regulation corporation. With over 150 million domain name registrations today or as of 2022, ccTLDs make up about 40% of the total domain name industry. Country code extension applications began in 1985. The registered country code extensions in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Television
Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertising, entertainment, news, and sports. Television became available in crude experimental forms in the late 1920s, but only after several years of further development was the new technology marketed to consumers. After World War II, an improved form of black-and-white television broadcasting became popular in the United Kingdom and the United States, and television sets became commonplace in homes, businesses, and institutions. During the 1950s, television was the primary medium for influencing public opinion.Diggs-Brown, Barbara (2011''Strategic Public Relations: Audience Focused Practice''p. 48 In the mid-1960s, color broadcasting was introduced in the U.S. and most other developed countries. The availability of various types of archival st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcasting
Broadcasting is the distribution (business), distribution of sound, audio or video content to a dispersed audience via any electronic medium (communication), mass communications medium, but typically one using the electromagnetic spectrum (radio waves), in a :wikt:one-to-many, one-to-many model. Broadcasting began with AM radio, which came into popular use around 1920 with the spread of vacuum tube radio transmitters and radio receiver, receivers. Before this, all forms of electronic communication (early radio, telephone, and telegraph) were wikt:one-to-one, one-to-one, with the message intended for a single recipient. The term ''broadcasting'' evolved from its use as the agricultural method of sowing seeds in a field by casting them broadly about. It was later adopted for describing the widespread distribution of information by printed materials or by telegraph. Examples applying it to "one-to-many" radio transmissions of an individual station to multiple listeners appeared as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Communications Cable
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables laid beginning in the 1850s carried telegraphy traffic, establishing the first instant telecommunications links between continents, such as the first transatlantic telegraph cable which became operational on 16 August 1858. Subsequent generations of cables carried telephone traffic, then data communications traffic. Modern cables use optical fibre technology to carry digital data, which includes telephone, Internet and private data traffic. Modern cables are typically about in diameter and weigh around for the deep-sea sections which comprise the majority of the run, although larger and heavier cables are used for shallow-water sections near shore. Submarine cables first connected all the world's continents (except Antarctica) when Java was connected to Darwin, Northern Terr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone
A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from el, τῆλε (''tēle'', ''far'') and φωνή (''phōnē'', ''voice''), together meaning ''distant voice''. A common short form of the term is ''phone'', which came into use early in the telephone's history. In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business, government, and in households. The essential elements of a telephone are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
