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40-528: The Fernsehsender Paul Nipkow ( TV Station Paul Nipkow ) in Berlin , Germany , was the first regular television service in the world. It was on the air from 22 March 1935, until it was shut down in 1944. The station was named after Paul Gottlieb Nipkow , the inventor of the Nipkow disk . Most often the term "television station" refers to a station which broadcasts structured content to an audience or it refers to

80-540: A Regional Radiocommunication Conference to abrogate the ST61 plan and to put a new plan for DTT broadcasting only in its place. In December 2005, the European Union decided to cease all analog audio and analog video television transmissions by 2012 and switch all terrestrial television broadcasting to digital audio and digital video (all EU countries have agreed on using DVB-T ). The Netherlands completed

120-572: A TV network and an individual station within the network is referred to as O&O or affiliate , respectively. Because television station signals use the electromagnetic spectrum, which in the past has been a common, scarce resource, governments often claim authority to regulate them. Broadcast television systems standards vary around the world. Television stations broadcasting over an analog system were typically limited to one television channel , but digital television enables broadcasting via subchannels as well. Television stations usually require

160-411: A barter in some cases. Fernsehsender Paul Nipkow The Fernsehsender "Paul Nipkow" ( TV Station Paul Nipkow ) , also known as Deutscher Fernseh-Rundfunk ( German Television Broadcasting ), in Berlin , Germany , was the first regular television service in the world. It was on the air from 22 March 1935, until it was shut down in 1944. The station was named after Paul Gottlieb Nipkow ,

200-504: A broadcast license from a government agency which sets the requirements and limitations on the station. In the United States, for example, a television license defines the broadcast range , or geographic area, that the station is limited to, allocates the broadcast frequency of the radio spectrum for that station's transmissions, sets limits on what types of television programs can be programmed for broadcast and requires

240-607: A virtual channel is defined as part of the ATSC stream metadata so that a station can transmit on any frequency but still show the same channel number. Additionally, free-to-air television repeaters and signal boosters can be used to rebroadcast a terrestrial television signal using an otherwise unused channel to cover areas with marginal reception. (see Pan-American television frequencies for frequency allocation charts) Analog television channels 2 through 6, 7 through 13, and 14 through 51 are only used for LPTV translator stations in

280-448: A certain number of frequencies by virtue of the ST61 plan, not all of them were brought into service. The first National Television System Committee standard was introduced in 1941. This standard defined a transmission scheme for a black-and-white picture with 525 lines of vertical resolution at 60 fields per second. In the early 1950s, this standard was superseded by a backward-compatible standard for color television . The NTSC standard

320-532: A graduated program. The first centre to experience analog switch-off was the remote Victorian regional town of Mildura , in 2010. The government supplied underprivileged houses across the nation with free digital set-top converter boxes in order to minimize conversion disruption. Australia's major free-to-air television networks were all granted digital transmission licenses and are each required to broadcast at least one high-definition and one standard-definition channel into all of their markets. In North America,

360-415: A much shorter wavelength, and thus requires a shorter antenna, but also higher power. North American stations can go up to 5000 kW ERP for video and 500 kW audio, or 1000 kW digital. Low channels travel further than high ones at the same power, but UHF does not suffer from as much electromagnetic interference and background "noise" as VHF, making it much more desirable for TV. Despite this, in

400-515: A regular schedule of experimental television programmes . However, these early experimental systems had insufficient picture quality to attract the public, due to their mechanical scan technology, and television did not become widespread until after World War II with the advent of electronic scan television technology. The television broadcasting business followed the model of radio networks , with local television stations in cities and towns affiliated with television networks , either commercial (in

440-634: A specification laid out by the ATSC has become the standard for digital terrestrial television. In the United States, the Federal Communications Commission (FCC) set the final deadline for the switch-off of analog service for 12 June 2009. All television receivers must now include a DTT tuner using ATSC . In Canada, the Canadian Radio-television and Telecommunications Commission (CRTC) set 31 August 2011 as

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480-635: A station to broadcast a minimum amount of certain programs types, such as public affairs messages . Another form of television station is non-commercial educational (NCE) and considered public broadcasting . To avoid concentration of media ownership of television stations, government regulations in most countries generally limit the ownership of television stations by television networks or other media operators, but these regulations vary considerably. Some countries have set up nationwide television networks, in which individual television stations act as mere repeaters of nationwide programs . In those countries,

520-711: A television set prototype during the Internationale Funkausstellung industrial exhibition. From 1929 television test programs were regularly aired from the Funkturm Berlin transmitter ( Rundfunksender Witzleben ). The first public transmission was introduced in the Kroll Opera House on 18 April 1934. At first the station could only be received in and around Berlin, later also in other German cities via special Reichspost long distance cables. It became very popular when it covered

560-425: A variety of ways to generate revenue from television commercials . They may be an independent station or part of a broadcasting network , or some other structure. They can produce some or all of their programs or buy some broadcast syndication programming for or all of it from other stations or independent production companies. Many stations have some sort of television studio , which on major-network stations

600-680: Is a type of television broadcasting in which the content is transmitted via radio waves from the terrestrial (Earth-based) transmitter of a TV station to a TV receiver having an antenna . The term terrestrial is more common in Europe and Latin America, while in Canada and the United States it is called over-the-air or simply broadcast . This type of TV broadcast is distinguished from newer technologies, such as satellite television ( direct broadcast satellite or DBS television), in which

640-792: Is often used for newscasts or other local programming . There is usually a news department , where journalists gather information. There is also a section where electronic news-gathering (ENG) operations are based, receiving remote broadcasts via remote pickup unit or satellite TV . Outside broadcasting vans, production trucks , or SUVs with electronic field production (EFP) equipment are sent out with reporters , who may also bring back news stories on video tape rather than sending them back live . To keep pace with technology United States television stations have been replacing operators with broadcast automation systems to increase profits in recent years. Some stations (known as repeaters or translators ) only simulcast another, usually

680-1043: Is used while testing their DTT platform. In the late 1990s and early 2000s, the Advanced Television Systems Committee developed the ATSC standard for digital high-definition terrestrial transmission. This standard was eventually adopted by many American countries, including the United States, Canada, Dominican Republic, Mexico, Argentina, El Salvador, Guatemala and Honduras; however, the four latter countries reversed their decision in favor of ISDB-Tb . The Pan-American terrestrial television operates on analog channels 2 through 6 ( VHF -low band, 54 to 88 MHz, known as band I in Europe), 7 through 13 (VHF-high band, 174 to 216 MHz, known as band III elsewhere), and 14 through 51 ( UHF television band, 470 to 698 MHz, elsewhere bands IV and V ). Unlike with analog transmission, ATSC channel numbers do not correspond to radio frequencies. Instead,

720-516: The 1936 Summer Olympics in Berlin. About 160,000 viewers saw the Olympic games on a few private televisions and in many public television parlours. Television was used more for mainstream entertainment rather than propaganda, as Joseph Goebbels preferred radio as a mass-medium. The heavy and slow equipment made it difficult to report, and almost all programming was broadcast live. From 1942 to 1944,

760-525: The VHF and UHF bands. Since radio waves in these bands travel by line of sight , reception is generally limited by the visual horizon to distances of 64–97 kilometres (40–60 miles), although under better conditions and with tropospheric ducting , signals can sometimes be received hundreds of kilometers distant. Terrestrial television was the first technology used for television broadcasting. The BBC began broadcasting in 1929 and by 1930 many radio stations had

800-534: The electricity bill and emergency backup generators . In North America , full-power stations on band I (channels 2 to 6) are generally limited to 100 kW analog video ( VSB ) and 10 kW analog audio ( FM ), or 45 kW digital ( 8VSB ) ERP. Stations on band III (channels 7 to 13) can go up by 5 dB to 316 kW video, 31.6 kW audio, or 160 kW digital. Low-VHF stations are often subject to long-distance reception just as with FM. There are no stations on Channel 1 . UHF , by comparison, has

840-807: The Germans also restarted a TV station in Paris to broadcast programs in German and French. In 1944, the station was shut down, as were most other cultural events, as a consequence of the approach of the Allied Armies in the Normandy Campaign . After the collapse of East Germany in 1990, about 280 rolls of 35mm film were discovered of Fernsehsender Paul Nipkow programs. In recent years, much of that material has been aired on German and international channels, mostly by The History Channel . In Germany,

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880-558: The U.S., the Federal Communications Commission (FCC) is taking another large portion of this band (channels 52 to 69) away, in contrast to the rest of the world, which has been taking VHF instead. This means that some stations left on VHF are harder to receive after the analog shutdown . Since at least 1974, there are no stations on channel 37 in North America for radio astronomy purposes. Most television stations are commercial broadcasting enterprises which are structured in

920-467: The US) or government-controlled (in Europe), which provided content. Television broadcasts were in greyscale (called black and white ) until the transition to color television in the 1960s. There was no other method of television delivery until the 1950s with the beginnings of cable television and community antenna television (CATV). CATV was, initially, only a re-broadcast of over-the-air signals. With

960-603: The United States. Channels 52 through 69 are still used by some existing stations, but these channels must be vacated if telecommunications companies notify the stations to vacate that signal spectrum. By convention, broadcast television signals are transmitted with horizontal polarization. Terrestrial television broadcast in Asia started as early as 1939 in Japan through a series of experiments done by NHK Broadcasting Institute of Technology . However, these experiments were interrupted by

1000-755: The beginning of the World War II in the Pacific. On February 1, 1953, NHK (Japan Broadcasting Corporation) began broadcasting. On August 28, 1953, Nippon TV (Nippon Television Network Corporation), the first commercial television broadcaster in Asia was launched. Meanwhile, in the Philippines, Alto Broadcasting System (now ABS-CBN Corporation ), the first commercial television broadcaster in Southeast Asia , launched its first commercial terrestrial television station DZAQ-TV on October 23, 1953, with

1040-500: The help of Radio Corporation of America (RCA). By the mid-1990s, the interest in digital television across Europe was such the CEPT convened the "Chester '97" conference to agree on means by which digital television could be inserted into the ST61 frequency plan . The introduction of digital terrestrial television in the late 1990s and early years of the 21st century led the ITU to call

1080-420: The highest point available in the transmission area, such as on a summit , the top of a high skyscraper , or on a tall radio tower . To get a signal from the master control room to the transmitter, a studio/transmitter link (STL) is used. The link can be either by radio or T1 / E1 . A transmitter/studio link (TSL) may also send telemetry back to the station, but this may be embedded in subcarriers of

1120-591: The inventor of the Nipkow disk . Parallel to the experiments by John Logie Baird in the United Kingdom , by Herbert E. Ives and Charles Francis Jenkins in the United States , as well as by Kenjiro Takayanagi in Japan , television pioneers like Dénes Mihály and Manfred von Ardenne had organised experimental television transmissions in Berlin since 1928. In the same year, Telefunken presented

1160-400: The local television station has no station identification and, from a consumer's point of view, there is no practical distinction between a network and a station, with only small regional changes in programming, such as local television news . To broadcast its programs, a television station requires operators to operate equipment, a transmitter or radio antenna , which is often located at

1200-419: The main broadcast. Stations which retransmit or simulcast another may simply pick-up that station over-the-air , or via STL or satellite. The license usually specifies which other station it is allowed to carry. VHF stations often have very tall antennas due to their long wavelength , but require much less effective radiated power (ERP), and therefore use much less transmitter power output , also saving on

1240-625: The old 405-line system, while UHF was used solely for 625-line broadcasts (which later used PAL color). Television broadcasting in the 405-line system continued after the introduction of four analog programs in the UHF bands until the last 405-line transmitters were switched off on January 6, 1985. VHF Band III was used in other countries around Europe for PAL broadcasts until the planned phase-out and switch over to digital television. The success of analog terrestrial television across Europe varied from country to country. Although each country had rights to

Television station - Misplaced Pages Continue

1280-406: The organization that operates the station. A terrestrial television transmission can occur via analog television signals or, more recently, via digital television signals. Television stations are differentiated from cable television or other video providers as their content is broadcast via terrestrial radio waves. A group of television stations with common ownership or affiliation are known as

1320-476: The programmes seen on its owner's flagship station, and have no television studio or production facilities of their own. This is common in developing countries . Low-power stations typically also fall into this category worldwide. Most stations which are not simulcast produce their own station identifications . TV stations may also advertise on or provide weather (or news) services to local radio stations , particularly co-owned sister stations . This may be

1360-670: The rediscovered footage has been first used in the 1996 documentary Televisionen im Dritten Reich ("Tele-Visions in the Third Reich") made by WDR and NDR , as well as in Michael Kloft's 1999 documentary Das Fernsehen unter dem Hakenkreuz ("Television Under the Swastika "). This article about a German television station is a stub . You can help Misplaced Pages by expanding it . Terrestrial television Terrestrial television , or over-the-air television ( OTA )

1400-492: The signal is transmitted to the receiver from an overhead satellite ; cable television , in which the signal is carried to the receiver through a cable ; and Internet Protocol television , in which the signal is received over an Internet stream or on a network utilizing the Internet Protocol . Terrestrial television stations broadcast on television channels with frequencies between about 52 and 600 MHz in

1440-667: The switchover by 2012 due to technical limitations; the rest of the EU member states had stopped analog television transmissions by the end 2012. Many countries are developing and evaluating digital terrestrial television systems. Australia has adopted the DVB-T standards and the government's industry regulator, the Australian Communications and Media Authority , has mandated that all analog transmissions will cease by 2012. Mandated digital conversion started early in 2009 with

1480-563: The transition in December 2006, and some EU member states decided to complete their switchover as early as 2008 (Sweden), and (Denmark) in 2009. While the UK began to switch off analog broadcasts, region by region, in late 2007, it was not completed until 24 October 2012. Norway ceased all analog television transmissions on 1 December 2009. Two member states (not specified in the announcement) expressed concerns that they might not be able to proceed to

1520-423: The widespread adoption of cable across the United States in the 1970s and 1980s, viewing of terrestrial television broadcasts has been in decline; in 2018, it was estimated that about 14% of US households used an antenna. However, in certain other regions terrestrial television continue to be the preferred method of receiving television, and it is estimated by Deloitte as of 2020 that at least 1.6 billion people in

1560-431: The world receive at least some television using these means. The largest market is thought to be Indonesia , where 250 million people watch through terrestrial. By 2019, over-the-top media service (OTT) which is streamed via the internet had become a common alternative. Following the ST61 conference, UHF frequencies were first used in the UK in 1964 with the introduction of BBC2 . In the UK, VHF channels were kept on

1600-579: Was exclusively being used in the Americas as well as Japan until the introduction of digital terrestrial television (DTT). While Mexico has ended all its analog television broadcasts and the United States and Canada have shut down nearly all of their analog TV stations, the NTSC standard continues to be used in the rest of Latin American countries except for Argentina, Paraguay and Uruguay where PAL-N standard

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