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Signal Overspill
Signal overspill is the receiving of a broadcast signal outside of its geographical target area. Radio frequencies have no way of obeying geographical borders and licensing arrangements, and the extent of overspill depends on where broadcast transmitters are sited and their power. In addition to traditional transmitters, overspill occurs when the footprint of a satellite is greater than that needed to serve its target audience. Transmitters located near to international borders may overspill into a large part of a neighbouring country, for example the signal from Republic of Ireland broadcaster 2RN's Clermont Carn site can be picked up in a large swathe of Northern Ireland, and vice versa BBC broadcasts can be picked up in the Republic. Overspill is usually welcomed by listeners and viewers as it gives them additional choices, when for example the Republic of Ireland began to migrate to a digital platform measures were put in place so that viewers in Northern Ireland could conti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Frequency
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around . This is roughly between the upper limit of audio frequencies and the lower limit of infrared frequencies; these are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves. Different sources specify different upper and lower bounds for the frequency range. Electric current Electric currents that oscillate at radio frequencies (RF currents) have special properties not shared by direct current or lower audio frequency alternating current, such as the 50 or 60 Hz current used in electrical power distribution. * Energy from RF currents in conductors can radiate into space as electromagnetic waves ( radio waves). This is the basis of radio technology. * RF current does not penetrate deeply into ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcast Engineering
Broadcast engineering is the field of electrical engineering, and now to some extent computer engineering and information technology, which deals with radio and television broadcasting. Audio engineering and RF engineering are also essential parts of broadcast engineering, being their own subsets of electrical engineering. Broadcast engineering involves both the studio and transmitter aspects (the entire airchain), as well as remote broadcasts. Every station has a broadcast engineer, though one may now serve an entire station group in a city. In small media markets the engineer may work on a contract basis for one or more stations as needed. Duties Modern duties of a broadcast engineer include maintaining broadcast automation systems for the studio and automatic transmission systems for the transmitter plant. There are also important duties regarding radio towers, which must be maintained with proper lighting and painting. Occasionally a station's engineer must deal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rimshot (broadcasting)
In radio and television broadcasting a rimshot is a station that attempts to reach a larger media market from a distant suburban, exurban, or even rural location. The term is primarily used with FM stations, and mainly in North America. The name derives not from the sound of a rimshot in music, but rather from basketball, where the ball hits the rim of the basket, and may or may not go in. Rimshot stations are often at a disadvantage compared to higher- strength signals in a market. Many rimshot operators attempt to serve the larger market with a signal that has deficiencies in the intended listening area, especially on the far side from where it is transmitted. Many (if not most) rimshot stations are "move-ins", having moved to about halfway between their city of license (which they are legally required to cover and serve) and the metro area which they actually care about. In this manner, the broadcast range of the station ideally covers both. Although stations have tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Border Blaster
A border blaster is a broadcast station that, though not licensed as an external service, is, in practice, used to target another country. The term "border blaster" is of North American origin, and usually associated with Mexican AM stations whose broadcast areas cover large parts of the United States, and United States border AM stations covering large parts of Canada. Conceptually similar European broadcasting included some pre-World War II broadcasting towards the United Kingdom, " radio périphérique" around France and the U.S. government-funded station Radio Free Europe, targeting eastern Europe. With broadcasting signals far more powerful than those of U.S. stations, the Mexican border blasters could be heard over large areas of the U.S. from the 1940s to the 1970s, often to the great irritation of American radio stations, whose signals could be overpowered by their Mexican counterparts. These are also sometimes referred to as X stations for their call letters: Mexico ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcast Television Systems
Broadcast television systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals. Analog television systems were standardized by the International Telecommunication Union in 1961, with each system designated by a letter ( A- N) in combination with the color standard used (NTSC, PAL or SECAM) - for example PAL-B, NTSC-M, etc.). These analog systems for TV broadcasting dominated until the 2010s. With the introduction of digital terrestrial television (DTT), they were replaced by four main systems in use around the world: ATSC, DVB, ISDB and DTMB. Analog television systems Every analog television system bar one began as a black-and-white system. Each country, faced with local political, technical, and economic issues, adopted a color television standard which was grafted onto an existing monochrome system such as CCIR System M, using gaps in the video spect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soft Power
In politics (and particularly in international politics), soft power is the ability to co-opt rather than coerce (contrast hard power). In other words, soft power involves shaping the preferences of others through appeal and attraction. A defining feature of soft power is that it is non-coercive; the currency of soft power includes culture, political values, and foreign policies. In 2012, Joseph Nye of Harvard University explained that with soft power, "the best propaganda is not propaganda", further explaining that during the Information Age, "credibility is the scarcest resource". Nye popularised the term in his 1990 book, ''Bound to Lead: The Changing Nature of American Power''. In this book he wrote: "when one country gets other countries to want what it wants might be called co-optive or soft power in contrast with the hard or command power of ordering others to do what it wants". He further developed the concept in his 2004 book, ''Soft Power: The Means to Success in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold War
The Cold War is a term commonly used to refer to a period of 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'' 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 alliance and victory against Nazi Germany and Imperial Japan in 1945. Aside from the nuclear arsenal development and conventional military deployment, the struggle for dominance was expressed via indirect means such as psychological warfare, propaganda campaigns, espionage, far-reaching embargoes, rivalry at sports events, and technological competitions such as the Space Race. The Western Bloc was led by the United States as well as a number of othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Der Schwarze Kanal
''Der schwarze Kanal'' (german: The Black Channel) was a series of political propaganda programmes broadcast weekly between 1960 and 1989 by East German television Deutscher Fernsehfunk. Each edition was made up of recorded extracts from recent West German television programmes re-edited to include a communist commentary. The programme was hosted by Karl-Eduard von Schnitzler and began on 21 March 1960. The name "Black Channel" is a play on words: in the German language "black channel" is a euphemism by plumbers for a sewer (compare English soil pipe). The name and the concept of the programme were originally a reaction to a West German programme named ''Die rote Optik'' ''("The red viewpoint")'' authored by journalist Thilo Koch, which ran between 1958 and 1960 and analysed East German television clips. Although the programme was primarily intended for domestic (East German) consumption, the programme makers (at least in the early days) hoped that those in the West who could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadcast Transmitter
A broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images ( video) to television receivers (televisions). The term often includes the antenna which radiates the radio waves, and the building and facilities associated with the transmitter. A broadcasting station ( radio station or television station) consists of a broadcast transmitter along with the production studio which originates the broadcasts. Broadcast transmitters must be licensed by governments, and are restricted to specific frequencies and power levels. Each transmitter is assigned a unique identifier consisting of a string of letters and numbers called a callsign, which must be used in all broadcasts. Exciter In broadcasti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guangdong
Guangdong (, ), alternatively romanized as Canton or Kwangtung, is a coastal province in South China on the north shore of the South China Sea. The capital of the province is Guangzhou. With a population of 126.01 million (as of 2020) across a total area of about , Guangdong is the most populous province of China and the 15th-largest by area as well as the second-most populous country subdivision in the world (after Uttar Pradesh in India). Its economy is larger than that of any other province in the nation and the fifth largest sub-national economy in the world with a GDP (nominal) of 1.95 trillion USD (12.4 trillion CNY) in 2021. The Pearl River Delta Economic Zone, a Chinese megalopolis, is a core for high technology, manufacturing and foreign trade. Located in this zone are two of the four top Chinese cities and the top two Chinese prefecture-level cities by GDP; Guangzhou, the capital of the province, and Shenzhen, the first special economic zone in the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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