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Communications In Dominica
Telecommunications in Dominica comprises telephone, radio, television and internet services. The primary regulatory authority is the National Telecommunication Regulatory Commission which regulates all related industries to comply with The Telecommunications Act 8 of 2000. Telephony Calls from Dominica to the US, Canada, and other NANP Caribbean nations, are dialed as 1 + NANP area code + 7-digit number. Calls from Dominica to non-NANP countries are dialed as 011 + country code + phone number with local area code. ;Telephone system: *Domestic: fully automatic network *International: microwave radio relay and SHF radiotelephone links to Martinique and Guadeloupe; VHF and UHF radiotelephone links to Saint Lucia ;Number formatting: *Telephone code: 767 * Number Format: nxx-xxxx * Country Code: +1767 * International Call Prefix: 011 (outside NANP) ;Mobile cellular service providers: *Digicel *LIME Radio ;Radio broadcast stations: AM 0, FM 15, shortwave 0 (2007) ;Radios: 46,000 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microwave
Microwave is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter corresponding to frequencies between 300 MHz and 300 GHz respectively. Different sources define different frequency ranges as microwaves; the above broad definition includes both UHF and EHF (millimeter wave) bands. A more common definition in radio-frequency engineering is the range between 1 and 100 GHz (wavelengths between 0.3 m and 3 mm). In all cases, microwaves include the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum. Frequencies in the microwave range are often referred to by their IEEE radar band designations: S, C, X, Ku, K, or Ka band, or by similar NATO or EU designations. The prefix ' in ''microwave'' is not meant to suggest a wavelength in the micrometer range. Rather, it indicates that microwaves are "small" (having shorter wavelengths), compared to the radio waves used prior to microwave te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digicel
Digicel is a Jamaican and Caribbean mobile phone network and home entertainment provider operating in 33 markets worldwide. Digicel has operated in several countries, including Guyana, Fiji, Haiti, Trinidad and Tobago, St. Lucia, Suriname, and Jamaica. History Digicel was founded in 2001 by Irish entrepreneur Denis O'Brien. The company launched in April 2001 in Jamaica. In March 2003, Digicel expanded to St. Lucia and St. Vincent. In 2005, Digicel purchased Cingular Wireless’ Caribbean and Bermudan operations. In April 2006, Digicel launched its services in Trinidad and Tobago. In May 2006, Digicel began operations in Haïti. Between 2006 and 2008, Digicel expanded into the Central American mainland, as well as the Pacific. In September 2006, it acquired an unrelated mobile phone provider: Digicel Holdings in El Salvador. In 2007, Digicel acquired U*Mobile in Guyana, and launched in Suriname in December. OUR court rulings In April 2002, Digicel received permission from Ja ... [...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 Code
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet. A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. IANA also oversees the approval process for new proposed top-level domains for ICANN. , their root domain contains 1502 top-level domains. , the IANA root database includes 1589 TLDs. That also includes 68 that are not assigned (revoked), 8 that are retired and 11 test domains. Those are not represented in IANA's listing and are not in root.zone file (root.zone file also includes one root domain). Types IANA distinguishes the following groups of top-level domains: * infrastructure top-level domain (ARPA) * generic top-level domains (gTLD) * generic-restricted top-level domains (grTLD) * sponsored top-level domains (sTLD) * country code top-level domains (ccTLD) * test top-level domains (tTLD) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Service Provider
An Internet service provider (ISP) is an organization that provides services for accessing, using, or participating in the Internet. ISPs can be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned. Internet services typically provided by ISPs can include Internet access, Internet transit, domain name registration, web hosting, Usenet service, and colocation. An ISP typically serves as the access point or the gateway that provides a user access to everything available on the Internet. Such a network can also be called as an eyeball network. History The Internet (originally ARPAnet) was developed as a network between government research laboratories and participating departments of universities. Other companies and organizations joined by direct connection to the backbone, or by arrangements through other connected companies, sometimes using dialup tools such as UUCP. By the late 1980s, a process was set in place towa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominica Broadcast
Dominica Broadcasting Corporation (also known on-air as DBS or DBS Radio) is the national radio station of the Commonwealth of Dominica. The service, owned by the local government, is headquartered on Victoria Street in the island's capital, Roseau. The company was founded in 1971 as Radio Dominica, and upon its launch replaced programming provided to the island by WIBS, the Windward Islands Broadcasting Service of Grenada. Among its earliest series were ''The Dominica Story ''The Dominica Story: A History of the Island'' is a history book from 1975, written by Dominican historian Lennox Honychurch. It was the first published history of the island. Originally presented as a miniseries for Radio Dominica (now DBS Rad ...'' (before its publication) and ''Espewans Kweyol''. DBS is heard on 88.1 FM in Roseau and environs, and its signal is picked up across the Eastern Caribbean. See also * Kairi FM * Q95 FM External linksOfficial site Mass media companies established in 1971 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortwave
Shortwave radio is radio transmission using shortwave (SW) radio frequencies. There is no official definition of the band, but the range always includes all of the high frequency band (HF), which extends from 3 to 30 MHz (100 to 10 metres); above the medium frequency band (MF), to the bottom of the VHF band. Radio waves in the shortwave band can be reflected or refracted from a layer of electrically charged atoms in the atmosphere called the ionosphere. Therefore, short waves directed at an angle into the sky can be reflected back to Earth at great distances, beyond the horizon. This is called skywave or "skip" propagation. Thus shortwave radio can be used for communication over very long distances, in contrast to radio waves of higher frequency, which travel in straight lines (line-of-sight propagation) and are limited by the visual horizon, about 64 km (40 miles). Shortwave broadcasts of radio programs played an important role in the early days of radio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FM Broadcasting
FM broadcasting is a method of radio broadcasting using frequency modulation (FM). Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to provide high fidelity sound over broadcast radio. FM broadcasting is capable of higher fidelity—that is, more accurate reproduction of the original program sound—than other broadcasting technologies, such as AM broadcasting. It is also less susceptible to common forms of interference, reducing static and popping sounds often heard on AM. Therefore, FM is used for most broadcasts of music or general audio (in the audio spectrum). FM radio stations use the very high frequency range of radio frequencies. Broadcast bands Throughout the world, the FM broadcast band falls within the VHF part of the radio spectrum. Usually 87.5 to 108.0 MHz is used, or some portion thereof, with few exceptions: * In the former Soviet republics, and some former Eastern Bloc countries, the older 65.8–74 MHz band ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AM Broadcasting
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands. The earliest experimental AM transmissions began in the early 1900s. However, widespread AM broadcasting was not established until the 1920s, following the development of vacuum tube receivers and transmitters. AM radio remained the dominant method of broadcasting for the next 30 years, a period called the "Golden Age of Radio", until television broadcasting became widespread in the 1950s and received most of the programming previously carried by radio. Subsequently, AM radio's audiences have also greatly shrunk due to competition from FM (FM broadcasting, frequency modulation) radio, Digital audio broadcasting, Digital Audio Broadcasting (DAB), satellite radio, HD Radio, HD (digi ... [...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] |
LIME (Cable & Wireless)
LIME, an acronym for 'Landline, Internet, Mobile, Entertainment', was a communications provider owned by the British based Cable & Wireless Communications for its operations in Anguilla, Antigua & Barbuda, Barbados, British Virgin Islands, Cayman Islands, Dominica, Grenada, Jamaica, Montserrat, St. Kitts & Nevis, St. Lucia, St. Vincent & the Grenadines and Turks & Caicos in the Caribbean. The company formed from the integrated businesses of Cable & Wireless in the Caribbean which adopted the LIME name on 3 November 2008. LIME operates as the native, incumbent telecommunications service provider in many of the islands where they reside. The company also operated mobile telecommunications under the ''b''mobile brand from 2003 until rebranding them as LIME in 2008. Competitors include Digicel (largest mobile competitor). Cable & Wireless Communications, LIME's parent company, also owns a 49% share in TSTT in Trinidad & Tobago and a 49% share in BaTelCo in The Bahamas. The comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Cellular
A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN). Modern mobile telephone services use a cellular network architecture and, therefore, mobile telephones are called ''cellular telephones'' or ''cell phones'' in North America. In addition to telephony, digital mobile phones ( 2G) support a variety of other services, such as text messaging, multimedia messagIng, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, video games and digital photography. Mobile phones offering only those capabilities are known as featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
