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NATO Satellite Ground Terminal Folly Lake
The NATO Satellite Ground Terminal Folly Lake, also known as SGT Folly Lake, is a now-decommissioned Canadian military satellite communications facility located in Wentworth, Cumberland County, Nova Scotia. At one time it was one of 24 satellite communication facilities for the North Atlantic Treaty Organization (NATO) that were located in NATO countries. SGT Folly Lake was one of two such facilities in Canada and was located on the west slope of an unnamed hill along the eastern side of the Wentworth Valley, opposite Higgins Mountain. The second facility was located in Diefenbunker Carp, Ontario. SGT Folly Lake's location was approximately north of the county line and is closest to the community of Folly Lake in Colchester County and approximately north from the northern edge of the lake of the same name. SGT Folly Lake was built in 1982 and decommissioned in December 2006. It was owned by the Department of National Defence and operated by Canadian Forces personnel as a lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Pulse
An electromagnetic pulse (EMP), also a transient electromagnetic disturbance (TED), is a brief burst of electromagnetic energy. Depending upon the source, the origin of an EMP can be natural or artificial, and can occur as an electromagnetic field, as an electric field, as a magnetic field, or as a conducted electric current. The electromagnetic interference caused by an EMP disrupts communications and damages electronic equipment; at higher levels of energy, an EMP such as a lightning strike can physically damage objects such as buildings and aircraft. The management of EMP effects is a branch of electromagnetic compatibility (EMC) engineering. EMP weapons are designed to deliver the damaging effects of a high-energy EMP that will disrupt unprotected infrastructure in the country, thus the employment of an EMP weapon against a country is the scenario of war most likely to collapse the functionality of the electrical network of the country. General characteristics An electro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold War
The Cold War is a term commonly used to refer to a period of Geopolitics, geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term ''Cold war (term), cold war'' is used because there was no large-scale fighting directly between the two superpowers, but they each supported major regional conflicts known as proxy wars. The conflict was based around the ideological and geopolitical struggle for global influence by these two superpowers, following their temporary Allies of World War II, alliance and victory against Nazi Germany and Empire of Japan, Imperial Japan in 1945. Aside from the Nuclear arms race, nuclear arsenal development and conventional military deployment, the struggle for dominance was expressed via indirect means such as psychological warfare, propaganda campaigns, Cold War espionage, espionage, far-reaching Economic sanctions, embargoes, rivalry at sports events, and technolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maritime Telegraph And Telephone Company
The Maritime Telegraph and Telephone Company (MT&T, later MTT) was founded around 1910 in Halifax, Nova Scotia and provided telecommunications to Nova Scotia until 1998 when it merged with the Island Telephone Company, NBTel, and NewTel Communications to form Aliant (now Bell Aliant). Many payphones A payphone (alternative spelling: pay phone) is typically a coin-operated public telephone, often located in a telephone booth or in high-traffic outdoor areas, with prepayment by inserting money (usually coins) or by billing a credit or debit ... in Nova Scotia still display MTT branding. References External links History of MTTAliant Companies based in Halifax, Nova Scotia Telecommunications companies of Canada Bell Aliant Telegraph companies 1910 establishments in Nova Scotia Telecommunications companies established in 1910 Companies disestablished in 1998 1998 disestablishments in Nova Scotia Canadian companies established in 1910 {{telecom-company-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiplexer
In electronics, a multiplexer (or mux; spelled sometimes as multiplexor), also known as a data selector, is a device that selects between several analog or digital input signals and forwards the selected input to a single output line. The selection is directed by a separate set of digital inputs known as select lines. A multiplexer of 2^n inputs has n select lines, which are used to select which input line to send to the output. A multiplexer makes it possible for several input signals to share one device or resource, for example, one analog-to-digital converter or one communications transmission medium, instead of having one device per input signal. Multiplexers can also be used to implement Boolean functions of multiple variables. Conversely, a demultiplexer (or demux) is a device taking a single input and selecting signals of the output of the compatible mux, which is connected to the single input, and a shared selection line. A multiplexer is often used with a compleme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-noise Amplifier
A low-noise amplifier (LNA) is an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio. An amplifier will increase the power of both the signal and the noise present at its input, but the amplifier will also introduce some additional noise. LNAs are designed to minimize that additional noise. Designers can minimize additional noise by choosing low-noise components, operating points, and circuit topologies. Minimizing additional noise must balance with other design goals such as power gain and impedance matching. LNAs are found in radio communications systems, medical instruments and electronic test equipment. A typical LNA may supply a power gain of 100 (20 decibels (dB)) while decreasing the signal-to-noise ratio by less than a factor of two (a 3 dB noise figure (NF)). Although LNAs are primarily concerned with weak signals that are just above the noise floor, they must also consider the presenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super High Frequency
Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz). This band of frequencies is also known as the centimetre band or centimetre wave as the wavelengths range from one to ten centimetres. These frequencies fall within the microwave band, so radio waves with these frequencies are called microwaves. The small wavelength of microwaves allows them to be directed in narrow beams by aperture antennas such as parabolic dishes and horn antennas, so they are used for point-to-point communication and data links This article from the beginning of the microwave era predicted the future value of microwaves for point-to-point communication. and for radar. This frequency range is used for most radar transmitters, wireless LANs, satellite communication, microwave radio relay links, satellite phones ( S band), and numerous short range terrestrial data links. They are also used for heating in industrial microwave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, Scramble for Africa, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosynchronous Orbit
A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day). The synchronization of rotation and orbital period means that, for an observer on Earth's surface, an object in geosynchronous orbit returns to exactly the same position in the sky after a period of one sidereal day. Over the course of a day, the object's position in the sky may remain still or trace out a path, typically in a figure-8 form, whose precise characteristics depend on the orbit's inclination and eccentricity. A circular geosynchronous orbit has a constant altitude of . A special case of geosynchronous orbit is the geostationary orbit, which is a circular geosynchronous orbit in Earth's equatorial plane with both inclination and eccentricity equal to 0. A satellite in a geostationary orbit remains in the same position in the sky to observers on the surface. Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latina, Italy
Latina () is the capital of the province of Latina in the Lazio region, in central Italy. , the city has 126,612 inhabitants and is the second-largest city of the region, after the national capital Rome. It was founded in 1932 under the fascist administration, as Littoria, when the area surrounding it which had been a swamp since antiquity was drained. History Although the area was first settled by the Latins, the modern city was founded by Benito Mussolini on 30 June 1932 as Littoria, named for the fascio littorio. The city was inaugurated on 18 December of the same year. Littoria was populated with settlers coming mainly from Friuli and Veneto, who formed the so-called Venetian- Pontine community (today surviving only in some peripheral boroughs). The edifices and the monuments, mainly in rationalist style, were designed by famous architects and artists such as Marcello Piacentini, Angiolo Mazzoni and Duilio Cambellotti. In 1934 it became a provincial capital and, after W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CFS Debert
Canadian Forces Station Debert (also CFS Debert) was a Canadian Forces station located in Debert, Nova Scotia. It was most recently used during the Cold War as a communications facility and was home to a " Regional Emergency Government Headquarters" (REGH) complex, more commonly known by their nickname "Diefenbunker." Originally this facility was developed with an airfield and army training centre, however these facilities were decommissioned in the 1970s and ownership transferred to the Government of Nova Scotia to be operated as the Debert Air Industrial Park. Following decommissioning of the REGH and removal of the last military presence at CFS Debert in the 1990s, this facility was transferred to the Government of Nova Scotia and then the Colchester Regional Development Authority to operate as Colchester Park. Debert Military Camp Following the outbreak of the Second World War in the fall of 1939, the first Canadian units began shipping through the port of Halifax; however ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halifax, Nova Scotia
Halifax is the capital and largest municipality of the Provinces and territories of Canada, Canadian province of Nova Scotia, and the largest municipality in Atlantic Canada. As of the 2021 Census, the municipal population was 439,819, with 348,634 people in its urban area. The regional municipality consists of four former municipalities that were Amalgamation (politics), amalgamated in 1996: History of Halifax (former city), Halifax, Dartmouth, Nova Scotia, Dartmouth, Bedford, Nova Scotia, Bedford, and Halifax County, Nova Scotia, Halifax County. Halifax is a major economic centre in Atlantic Canada, with a large concentration of government services and private sector companies. Major employers and economic generators include the Canadian Armed Forces, Department of National Defence, Dalhousie University, Nova Scotia Health Authority, Saint Mary's University (Halifax), Saint Mary's University, the Halifax Shipyard, various levels of government, and the Port of Halifax. Agricult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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