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108-526: The Mobil Showcase Network , also known as Mobil Showcase or Mobil Showcase Theatre , was an occasional television network from 1976 to 1984 with an ad hoc group of stations. A Mobil Oil media expert, Herb Schmertz , wrote canned paid "editorials" placed into newspapers like the New York Times opinion-editorial page. Schmertz also had Mobil underwriting Masterpiece Theatre to improve Mobil's image, which Mobil has been sole supporter since

216-626: A 15kW low-power station broadcasting in high definition on the same transmitter tower under the control of the same owners, using the same studios to provide a second high definition channel for the Fox affiliate. One notable exception to the survival of secondary affiliations are stations owned by West Virginia Media Holdings . WTRF-DT2 in Wheeling and WVNS-DT2 in Beckley , West Virginia both had Fox as their primary affiliation and MyNetworkTV as

324-569: A blurry demonstration broadcast showed that it would not be in regular use for several months. The DuMont Television Network , which had begun experimental broadcasts before the war, launched what Newsweek called "the country's first permanent commercial television network" on 15 August 1946, connecting New York City with Washington. Not to be outdone, NBC launched what it called "the world's first regularly operating television network" on 27 June 1947, serving New York City, Philadelphia, Schenectady and Washington. Baltimore and Boston were added to

432-467: A central point, and whether the network master control has the technical and administrative capability to take over the programming of their affiliates in real-time when it deems this necessary – the most common example being during national breaking news events. In North America in particular, many television networks available via cable and satellite television are branded as "channels" because they are somewhat different from traditional networks in

540-417: A common example of this was the popular syndicated science fiction drama series Star Trek: The Next Generation (1987–1994). Some network affiliates may also choose to air season games involving local sports teams in lieu of network programming. A handful of networks, such as the U.S.-based Public Broadcasting Service (PBS) public television and National Public Radio (NPR), have been founded on

648-541: A consolidation of each respective network's higher-rated programs onto one schedule); MyNetworkTV , a network formed from affiliates of UPN and The WB that did not affiliate with The CW, launched at the same time. FCC regulations in the United States restricted the number of television stations that could be owned by any one network, company or individual . This led to a system where most local television stations were independently owned, but received programming from

756-418: A few that had affiliations with ABC, NBC, CBS and DuMont during the late 1940s through the mid-1950s, when fewer television stations existed in a particular market, especially those that would eventually be able to support four commercial outlets). Historically, the sole commercial station in a market would commonly take affiliations or secondary affiliations from most or all of the major national networks. As

864-540: A government entity that was created in 1926 to regulate the radio industry. With some exceptions, radio stations east of the Mississippi River received official call signs beginning with the letter "W"; those west of the Mississippi were assigned calls beginning with a "K". The number of programs that these early stations aired was often limited, in part due to the expense of program creation. The idea of

972-547: A joint venture between Time Warner and the Tribune Company , and the United Paramount Network ( UPN ), formed through a programming alliance between Chris-Craft Industries and Paramount Television (whose parent, Viacom , would later acquire half and later all of the network over the course of its existence). In September 2006, The CW was launched as a "merger" of The WB and UPN (in actuality,

1080-521: A large amount of syndicated programming. Other networks are dedicated to specialized programming, such as religious content or programs presented in languages other than English, particularly Spanish. The largest television network in the United States, however, is the Public Broadcasting Service ( PBS ), a non-profit, publicly owned, non-commercial educational service. In comparison to the commercial television networks, there

1188-536: A large number of channels, as does UKTV . Sweden had only one television network from 1956 until the early-1990s: the public broadcaster Sveriges Television (SVT). Commercial companies such as Modern Times Group , TV4 , Viasat , and SBS Discovery have established TV networks since the 1980s although they initially aired exclusively on satellite. In 1991, TV4 became Sweden's first commercial television network to air terrestrially. Most television programming in Sweden

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1296-494: A large number of privately owned affiliates to disseminate its radio and television programming. However, since the 1960s, most of the CBC Television affiliates have become network owned-and-operated stations or retransmitters. CBC Radio stations are now entirely O&O. While network-owned stations will normally carry the full programming schedule of the originating network (save for major local events), an affiliate

1404-438: A larger area, often an entire state, and become full-time affiliates to one specific metropolitan network. As well as these free-to-air channels, there are others on Australia's Pay television network Foxtel . New Zealand has one public network, Television New Zealand (TVNZ), which consists of two main networks: TVNZ 1 is the network's flagship network which carries news, current affairs and sports programming as well as

1512-400: A local monopoly, a station could become a primary affiliate of one of the stronger networks, carrying most of that network's programming while remaining free to "cherry-pick" popular programming from any or all of the rival networks. Similarly, some markets that had two commercial stations shared a secondary affiliation with one network, while maintaining separate primary affiliations (such as in

1620-456: A method called "broadcast syndication", and today nearly every television station in the United States obtains syndicated programs in addition to network-produced fare. Late in the 20th century, cross-country microwave radio relays were replaced by fixed-service satellites. Some terrestrial radio relays remained in service for regional connections. After the failure and shutdown of DuMont in 1956, several attempts at new networks were made between

1728-464: A national basis. Currently, licensed national or provincial networks must be carried by all cable providers (in the country or province, respectively) with a service area above a certain population threshold, as well as all satellite providers. However, they are no longer necessarily expected to achieve over-the-air coverage in all areas (APTN, for example, only has terrestrial coverage in parts of northern Canada). In addition to these licensed networks,

1836-541: A network system which would distribute programming to many stations simultaneously, saving each station the expense of creating all of their own programs and expandingus transmitted from station to station to listeners across the United States. Other companies, including CBS and the Mutual Broadcasting System , soon followed suit, each network signed hundreds of individual stations on as affiliates: stations which agreed to broadcast programs from one of

1944-488: A network, becoming Ostankino Channel One . The other five networks were operated by Ground Zero. This free airwave space allowed many private television networks like NTV and TV-6 to launch in the mid-1990s. The 2000s were marked by the increased state intervention in Russian television. On 14 April 2001 NTV experienced management changes following the expulsion of former oligarch and NTV founder Vladimir Gusinsky . As

2052-468: A new independent multicultural station, CFHD-DT , which signed on in 2013. This was also done by MyNetworkTV in the 2009–10 season in Des Moines , Iowa and Memphis , Tennessee after it lost their individual affiliates in those markets to other networks as it offered the network's last season of WWE Friday Night Smackdown to the local CW affiliates in both cities without forcing them to carry

2160-453: A particular network's programming as an affiliate, or to refer to the status of carrying such programming in a given market as an "affiliation". Stations which carry a network's programming by method of affiliation maintain a contractual agreement , which may allow the network to dictate certain requirements that a station must agree to as part of the contract (such as programming clearances, local programming quotas or reverse compensation of

2268-417: A particular station's affiliation agreement was either previously renewed or originally signed. While many television and radio stations maintain affiliations with the same network for decades, on occasion, there are certain factors that may lead a network to move its programming to another station (such as the owner of a network purchasing a station other than that which the network is already affiliated with,

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2376-411: A percentage of total national market reach. As such, commercial networks tend to have O&Os only in the four largest media markets ( Kantō , Keihanshin , Chūkyō , and Fukuoka ), and rely on affiliates to carry their programming in other prefectures. However, there are two major exceptions to the regulations. NHK is a government-owned, non-commercial television network and, since it is not covered by

2484-579: A principle which effectively reverses the commercial broadcasting owned-and-operated station model and is called a state network. Instead of television networks owning stations, the stations collectively own the network and brand themselves as "member stations" or "member networks" instead of as affiliates or O&Os. Individual stations such as WPBS-TV (in Watertown, New York ) and KPBS (in San Diego , California ) are not allowed to be owned by

2592-401: A rate of more than $ 5.00 per subscriber to ESPN). The providers also handle the sale of advertising inserted at the local level during national programming, in which case the broadcaster and the cable/satellite provider may share revenue . Networks that maintain a home shopping or infomercial format may instead pay the station or cable/satellite provider, in a brokered carriage deal. This

2700-502: A result, most of the prominent reporters featured on NTV left the network. Later on 22 January 2002, the second largest private television network TV-6 , where the former NTV staff took refuge, was shut down allegedly because of its editorial policy. Five months later on 1 June, TVS was launched, mostly employing NTV/TV-6 staff, only to cease operations the following year. Since then, the four largest television networks (Channel One, Russia 1, NTV and Russia 2) have been state-owned. Still,

2808-491: A second channel, BBC 2 (with the original service being renamed BBC 1 ). A second national commercial network was launched Channel 4 , although Wales instead introduced a Welsh-language service, S4C . These were later followed by the launch of a third commercial network, Channel 5 . Since the introduction of digital television, the BBC, ITV, Channel 4 and Channel 5 each introduced a number of digital-only channels. Sky operates

2916-468: A second or even third station providing a greater variety of content. Commercial television services also became available when private companies applied for television broadcasting licenses. Often, each new network would be identified with their channel number, so that individual stations would often be numbered "One", "Two", "Three" and so forth. The first television network in the United Kingdom

3024-669: A secondary affiliation. Until WTRF lost its Fox affiliation in 2014 to NBC affiliate WTOV-TV (leaving WTRF-DT2 with MyNetworkTV and WVNS as the only one with affiliations from both), each network was carried on the second digital subchannel of WTRF-TV and WVNS-TV , respectively, both of which carry CBS programming on their main signals. Another example is WBKB-TV in Alpena, Michigan , owned by The Marks Group , which also carries CBS programming on its main signal and both Fox and MyNetworkTV on its second digital subchannel. In addition, however, WBKB-TV also has an ABC affiliate on WBKB-DT3, giving

3132-423: A share of a station's retransmission consent revenue to the network). Affiliation contracts normally last between three and five years, though contracts have run for as little as one year or as long as ten; in addition, if a company owns two or more stations affiliated with the same network, affiliation contracts may have end-of-term dates that are the same or differ among that company's affiliates, depending on when

3240-508: A single company (as is the case with the BBC), each local area had a separate television channel that was independently owned and operated, although most of these channels shared a number of programmes, particularly during peak evening viewing hours. These channels formed the ITV network . When the advent of UHF broadcasting allowed a greater number of television channels to broadcast, the BBC launched

3348-446: A small number of stations still operating as affiliates. Most television services outside North America are national networks established by a combination of publicly funded broadcasters and commercial broadcasters. Most nations established television networks in a similar way: the first television service in each country was operated by a public broadcaster , often funded by a television licensing fee, and most of them later established

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3456-524: A station's schedule; this form of dual affiliation was the norm before the digital age. Dual affiliations are most commonly associated with the smaller American television networks, such as The CW and MyNetworkTV, which air fewer hours of prime time programming than the "Big Four" networks and can therefore be more easily combined into a single schedule, although historically the "Big Four" have had some dual-affiliate stations in small markets as well and in some cases, affiliates of more than two networks (including

3564-406: A telephone improvement device. Its high capacity (transmitting 240 telephone calls simultaneously) also made it ideal for long-distance television transmission, where it could handle a frequency band of 1 MHz. German television first demonstrated such an application in 1936 by relaying televised telephone calls from Berlin to Leipzig , 180 km (110 mi) away, by cable. AT&T laid

3672-528: A third party company (for example, the TV2 programme Shortland Street is produced by South Pacific Pictures ). The networks produce their own news and current affairs programs, with most of the content filmed in Auckland. Network affiliate Notwithstanding this distinction, it is common in informal speech (even for networks or O&Os themselves) to refer to any station, O&O or otherwise, that carries

3780-531: A unionwide network. Until 1989, there were six television networks, all owned by the USSR Gosteleradio. This changed during Mikhail Gorbachev 's Perestroika program, when the first independent television network, 2×2 , was launched. Following the breakup of the Soviet Union, USSR Gosteleradio ceased to exist as well as its six networks. Only Channel One had a smooth transition and survived as

3888-488: Is TV3 , which competes directly with both TVNZ broadcast networks. MediaWorks also operates a second network, FOUR , which airs mostly imported programmes with children's shows airing in the daytime and shows targeted at teenagers and adult between 15 and 39 years of age during prime time. MediaWorks also operates a timeshift network, TV3 + 1, and a 24-hour music network, C4 . All television networks in New Zealand air

3996-523: Is centralised except for local news updates that air on SVT2 and TV4. Until 1989, Netherlands Public Broadcasting was the only television network in the Netherlands, with three stations, Nederland 1 , Nederland 2 and Nederland 3 . Rather than having a single production arm, there are a number of public broadcasting organizations that create programming for each of the three stations, each working relatively independently. Commercial broadcasting in

4104-418: Is especially common with low-power television stations, and in recent years, even more so for stations that used this revenue stream to finance their conversion to digital broadcasts, which in turn provides them with several additional channels to transmit different programming sources. Television broadcasting in the United States was heavily influenced by radio. Early individual experimental radio stations in

4212-407: Is explained by author Tim P. Vos in his abstract A Cultural Explanation of Early Broadcast , where he determines targeted group/non-targeted group representations as well as the cultural specificity employed in the television network entity. Vos notes that policymakers did not expressly intend to create a broadcast order dominated by commercial networks. In fact, legislative attempts were made to limit

4320-477: Is independently owned and typically under no obligation to do so. This is especially the case for network shows airing outside the network's primetime hours. Affiliated stations often buy supplementary programming from another source, such as a broadcast syndication service, or another television network which otherwise does not have coverage in the station's broadcast area. Some affiliates may air such programs instead of those from their primary network affiliation;

4428-548: Is no central unified arm of broadcast programming, meaning that each PBS member station has a significant amount of freedom to schedule television shows as they consent to. Some public television outlets, such as PBS, carry separate digital subchannel networks through their member stations (for example, Georgia Public Broadcasting ; in fact, some programs airing on PBS were branded on other channels as coming from GPB Kids and PBS World ). This works as each network sends its signal to many local affiliated television stations across

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4536-436: Is only shared between the main station in a given market and any repeaters it may operate to extend its coverage, PBS is not beholden to exclusive programming agreements with stations in the same metropolitan area. In some markets, the network maintains memberships with two noncommercial educational stations – in some cases, these are owned by the same entity – which split the programming rights. To avoid programming conflicts,

4644-544: Is the British Broadcasting Corporation ( BBC ), which is perhaps most-well known for its news agency BBC News . Owned by the Crown , the BBC funds itself in two ways. UK services branded under BBC are funded by the television license paid by British residents, as a result no advertising appears on these services. The advertising-funded arm ( BBC Studios ) employs 23,000 people worldwide including

4752-476: The Ada, Oklahoma - Sherman, Texas market, where until 1985, KTEN and KXII shared secondary affiliations with NBC, while the former was primarily affiliated with ABC and the latter with CBS; the former station is now a primary NBC affiliate). As U.S.-marketed television receivers have been required to include factory-installed UHF tuners since 1964, the rapid expansion of broadcast television onto UHF channels in

4860-1059: The Big Three television networks , the American Broadcasting Company (ABC), CBS (formerly the Columbia Broadcasting System) and the National Broadcasting Company ( NBC ); however, the Fox Broadcasting Company (Fox), which launched in October 1986, has gained prominence and is now considered part of the "Big Four". The Big Three provide a significant number of programs to each of their affiliates, including newscasts , prime time, daytime and sports programming, but still reserve periods during each day where their affiliate can air local programming , such as local news or syndicated programs . Since

4968-453: The E. W. Scripps Company , and CBS and Westinghouse Broadcasting ). In the United States, Federal Communications Commission (FCC) regulations limit the number of network-owned stations as a percentage of total national market reach. As such, networks tend to have O&Os only in the largest media markets (such as New York City and Los Angeles ), and rely on affiliates to carry their programming in other, smaller markets. However, even

5076-643: The Global Television Network . CJNT-DT in Montreal formerly maintained dual affiliations through both City and Omni Television to satisfy its ethnic programming requirements due to its sale to Rogers Media in 2012. This model eventually ceased as Rogers' was granted a request by the CRTC in late 2012 to change the station's format from a multicultural station to a conventional English-language station, and contribute funding and programming to

5184-547: The National Educational Television Association ; likewise, most content on PBS's core national programming service is produced by various individual member stations such as WGBH-TV , WNET and WETA-TV . These are not affiliate stations in that the ownership of the main network is not independent of ownership of the individual local stations. Unlike the modern-day affiliation model with commercial stations, in which network programming

5292-553: The Nine Network ; while their equivalents on VHF channels 7 and 10 respectively formed the Seven Network and Network 10 . Until 1989, areas outside these main cities had access to only a single commercial station, and these rural stations often formed small networks such as Prime Television . Beginning in 1989, however, television markets in rural areas began to aggregate, allowing these rural networks to broadcast over

5400-530: The United States from September 1994 to September 1996, when television stations in 30 markets changed affiliations (through both direct swaps involving the new and original affiliates, and transactions involving multiple stations) as a result of a May 1994 agreement by New World Communications to switch twelve of its stations to Fox , resulting in various other affiliation transactions including additional groupwide deals (such as those between ABC and

5508-510: The "prime-time" programs that the network offered. Local stations occasionally break from regularly scheduled network programming however, especially when a breaking news or severe weather situation occurs in the viewing area. Moreover, when stations return to network programming from commercial breaks , station identifications are displayed in the first few seconds before switching to the network's logo. A number of different definitions of "network" are used by government agencies, industry, and

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5616-567: The 1950s and the 1970s, with little success. The Fox Broadcasting Company , founded by the Rupert Murdoch -owned News Corporation (now owned by Fox Corporation ), was launched on 9 October 1986 after the company purchased the television assets of Metromedia ; it would eventually ascend to the status of the fourth major network by 1994. Two other networks launched within a week of one another in January 1995: The WB Television Network,

5724-458: The 1970s and 1980s (along with increased deployment of cable and satellite television systems) has significantly reduced the number of one-station markets (limiting them to those with population densities too small to be able to make any additional stations economically viable), providing networks with a larger selection of stations as potential primary affiliates. A new station which could clear one network's entire programming lineup better serves

5832-465: The 2000s saw a rise of several independent television networks such as REN (its coverage increased vastly allowing it to become a federal network), Petersburg – Channel Five (overall the same), the relaunched 2×2 . The Russian television market is mainly shared today by five major companies: Channel One, Russia 1, NTV, TNT and CTC. The major commercial television network in Brazil is Rede Globo , which

5940-578: The CRTC: government-owned CBC Television (English) and Ici Radio-Canada Télé (French), French-language private network TVA , and APTN , a network focused on Indigenous peoples in Canada . A third French-language service, Noovo (formerly V), is licensed as a provincial network within Quebec , but is not licensed or locally distributed (outside of carriage on the digital tiers of pay television providers) on

6048-549: The NBC television network in late 1947. DuMont and NBC would be joined by CBS and ABC in 1948. In the 1940s, the term "chain broadcasting" was used when discussing network broadcasts, as the television stations were linked together in long chains along the East Coast . But as the television networks expanded westward, the interconnected television stations formed major networks of connected affiliate stations. In January 1949, with

6156-492: The Netherlands is currently operated by two networks, RTL Nederland and SBS Broadcasting , which together broadcast seven commercial stations. The first television network in the Soviet Union launched on 7 July 1938 when Petersburg – Channel 5 of Leningrad Television became a unionwide network. The second television network in the Soviet Union launched on 22 March 1951 when Channel One of USSR Central Television became

6264-500: The Public Broadcasting Service; most belong to local community non-profit groups, universities or local and state educational organizations. The national PBS system is owned collectively by hundreds of broadcasters in communities nationwide. Individual member stations are free to carry large amounts of syndicated programming and many produce their own educational or edutainment content for distribution to other PBS member stations through services like American Public Television or

6372-462: The Showcase featured Edward & Mrs. Simpson . For summer 1980, Mobil Showcase assembled a group of shows dubbed Summershow . Television network A television broadcaster or television network is a telecommunications network for the distribution of television content , where a central operation provides programming to many television stations , pay television providers or, in

6480-611: The United States began limited operations in the 1910s. In November 1920, Westinghouse signed on "the world's first commercially licensed radio station", KDKA in Pittsburgh , Pennsylvania. Other companies built early radio stations in Detroit, Boston , New York City and other areas. Radio stations received permission to transmit through broadcast licenses obtained through the Federal Radio Commission (FRC),

6588-737: The United States, multichannel video programming distributors . Until the mid-1980s, broadcast programming on television in most countries of the world was dominated by a small number of terrestrial networks . Many early television networks such as the BBC , CBC , PBS , PTV , NBC or ABC in the US and in Australia evolved from earlier radio networks. In countries where most networks broadcast identical, centrally originated content to all of their stations, and where most individual television transmitters therefore operate only as large " repeater stations ",

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6696-431: The United States, a station may even be simultaneously listed as an affiliate of two (or in rare cases, three) networks. A station which has a dual affiliation is typically expected to air all or most of both networks' core day time and/or prime time schedules – although programming from a station's secondary affiliation normally airs outside its usual network time slot, and some less popular programs may simply be left off of

6804-563: The ability of digital television stations to offer a distinct programming stream on a digital subchannel , traditional dual affiliation arrangements in which programming from two networks is combined into a single schedule are becoming more rare. KEYC-TV in Mankato , Minnesota is one such example, carrying CBS programming on its 12.1 subchannel and Fox on 12.2. KEYC's Watertown , New York sister station WWNY-TV follows this same pattern (CBS on 7.1 and Fox on 7.2), but supplements this with

6912-505: The beginning of the series. He also considered having the company buy a newspaper, the Long Island Press . He instead settled on a "sort of TV network" as Mobil and Schmertz were frustrated with the network-developed anti-oil-company news and documentaries. Schmertz worked with SFM Media Service Corporation lining up 43 stations, primarily in the top 50 markets; half of these were network affiliates. Mobil paid $ 3.2 million to

7020-399: The country. These local stations then carry the "network feed", which can be viewed by millions of households across the country. In such cases, the signal is sent to as many as 200+ stations or as little as just a dozen or fewer stations, depending on the size of the network. With the adoption of digital television , television networks have also been created specifically for distribution on

7128-440: The creation of Fox, the number of American television networks has increased, though the amount of programming they provide is often much less: for example, The CW only provides fifteen hours of primetime programming each week (along with three hours on Saturdays), while MyNetworkTV only provides ten hours of primetime programming each week, leaving their affiliates to fill time periods where network programs are not broadcast with

7236-503: The digital subchannels of television stations (including networks focusing on classic television series and films operated by companies like Weigel Broadcasting (owners of Movies! and Me-TV ) and Nexstar Media Group (owners of Rewind TV and Antenna TV ), along with networks focusing on music, sports and other niche programming). Cable and satellite providers pay the networks a certain rate per subscriber (the highest charge being for ESPN , in which cable and satellite providers pay

7344-500: The early days of privately owned networks CTV and TVA , but the original "one station, one vote" model has largely faltered as increasing numbers of stations are acquired by the same owners. In CTV's case, the systematic pattern of acquisition of CTV member stations by the owners of CFTO-TV in Toronto ultimately allowed control over the network as a whole, turning former member stations into CTV O&Os. In some smaller markets in

7452-546: The federal regulator enacted the Prime Time Access Rule , which restricted the amount of time that the networks could air programs; officials hoped that the rules would foster the development of quality local programs, but in practice, most local stations did not want to bear the burden of producing many of their own programs, and instead chose to purchase programs from independent producers. Sales of television programs to individual local stations are done through

7560-665: The first L-carrier coaxial cable between New York City and Philadelphia , with automatic signal booster stations every 10 miles (16 km), and in 1937 it experimented with transmitting televised motion pictures over the line. Bell Labs gave demonstrations of the New York–Philadelphia television link in 1940 and 1941. AT&T used the coaxial link to transmit the Republican National Convention in June 1940 from Philadelphia to New York City, where it

7668-518: The five major networks by market reach. In Canada , the Canadian Radio-Television and Telecommunications Commission (CRTC) has significantly more lenient rules regarding media ownership. As such, most television stations, regardless of market size, are now O&Os of their respective networks, with only a few true affiliates remaining (mainly located in smaller cities). The Canadian Broadcasting Corporation originally relied on

7776-606: The four major television networks originally only broadcast a few hours of programs a week to their affiliate stations, mostly between 8:00 and 11:00 p.m. Eastern Time , when most viewers were watching television. Most of the programs broadcast by the television stations were still locally produced. As the networks increased the number of programs that they aired, however, officials at the Federal Communications Commission (FCC) grew concerned that local television might disappear altogether. Eventually,

7884-573: The general public. Under the Broadcasting Act , a network is defined as "any operation where control over all or any part of the programs or program schedules of one or more broadcasting undertakings is delegated to another undertaking or person", and must be licensed by the Canadian Radio-television and Telecommunications Commission (CRTC). Only three national over-the-air television networks are currently licensed by

7992-490: The idea of networking television signals (sending one station's video and audio signal to outlying stations) was born. However, the signal from an electronic television system, containing much more information than a radio signal, required a broadband transmission medium. Transmission by a nationwide series of radio relay towers would be possible but extremely expensive. Researchers at AT&T subsidiary Bell Telephone Laboratories patented coaxial cable in 1929, primarily as

8100-495: The largest markets may have network affiliates in lieu of O&Os. For instance, Mission Broadcasting 's WPIX serves as the New York City affiliate of The CW (which is 75% owned by station operator Nexstar Media Group , with Warner Bros. Discovery and Paramount Global each owning 12.5% stakes), while Paramount owns independent station WLNY-TV in that market. On the other hand, several other television stations in

8208-443: The majority of the locally produced shows broadcast by TVNZ and imported shows. TVNZ's second network, TV2 , airs mostly imported shows with some locally produced programs such as Shortland Street . TVNZ also operates a network exclusive to pay television services, TVNZ Heartland , available on providers such as Sky . TVNZ previously operated a non-commercial public service network, TVNZ 7 , which ceased operations in June 2012 and

8316-565: The manufacture of television and radio equipment for civilian use from 1 April 1942 to 1 October 1945, temporarily shutting down expansion of television networking. However, in 1944 a short film, " Patrolling the Ether ", was broadcast simultaneously over three stations as an experiment. AT&T made its first postwar addition in February 1946, with the completion of a 225-mile (362 km) cable between New York City and Washington, D.C., although

8424-575: The metropolitan areas of Rio de Janeiro and São Paulo and mainly rely on affiliates to carry their programming outside of those two areas. The metropolitan areas of Belo Horizonte , Brasília , Manaus , and Recife are examples of those who have both O&Os and affiliates. For instance, TV Globo and RedeTV have O&Os in Recife, but Record , SBT and Band do not. TV Cultura , Rede Brasil de Televisão , and TV Gazeta only have one owned-and-operated station each; those networks are smaller than

8532-451: The network choosing to affiliate with another local station in order to improve local viewership of its programming by aligning with a stronger station, or a dispute between a network and station owner while negotiating a contract renewal for a particular station such as those over reverse compensation shares), often at the end of one network's existing contract with a station. One of the most notable and expansive affiliation changes occurred in

8640-577: The network for their own programming, a method known as regional variation . This is common where small networks are members of larger networks. The majority of commercial television stations are self-owned, even though a variety of these instances are the property of an owned-and-operated television network. The commercial television stations can also be linked with a noncommercial educational broadcasting agency. Some countries have launched national television networks, so that individual television stations can act as common repeaters of nationwide programs. On

8748-530: The network through a franchising contract, except in a few major cities that had owned-and-operated stations (O&O) of a network and independent stations. In the early days of television, when there were often only one or two stations broadcasting in a given market, the stations were usually affiliated with multiple networks and were able to choose which programs would air. Eventually, as more stations were licensed, it became common for each station to be exclusively affiliated with only one network and carry all of

8856-576: The network utilizes a Program Differentiation Plan to assign programming quotas in these situations, resulting in the primary member station carrying more PBS-distributed programming than the secondary member; the number of two-to-a-market PBS members (not counting repeaters of the market's main PBS outlet) has been steadily decreasing since the early 2000s, with few remaining outside larger markets. The "member station" model had historically been used in Canada in

8964-510: The network's interests than the former pattern of partial access afforded by mixing various secondary affiliations on the schedule of a single local analog channel. In 2009, after many years of decline, the era of secondary affiliations to multiple major networks (once common in communities where fewer stations existed than networks seeking carriage) finally came to an end at the smallest-market U.S. station, KXGN-TV in Glendive, Montana (which

9072-490: The network's preferred position. As to individual stations, modern network operations centers usually use broadcast automation to handle most tasks. These systems are not only used for programming and for video server playout , but use exact atomic time from Global Positioning Systems or other sources to maintain perfect synchronization with upstream and downstream systems, so that programming appears seamless to viewers. A major international television broadcaster

9180-458: The networks. As radio prospered throughout the 1920s and 1930s, experimental television stations, which broadcast both an audio and a video signal, began sporadic broadcasts. Licenses for these experimental stations were often granted to experienced radio broadcasters, and thus advances in television technology closely followed breakthroughs in radio technology. As interest in television grew, and as early television stations began regular broadcasts,

9288-582: The next. Citytv originally began operating as a television system in 2002 when CKVU-TV in Vancouver started to carry programs originating from CITY-TV in Toronto and adopted that station's "Citytv" branding, but gradually became a network by virtue of national coverage through expansions into other markets west of Atlantic Canada between 2005 and 2013. Most local television stations in Canada are now owned and operated directly by their network, with only

9396-522: The operation of broadcaster UKTV in the UK itself. Experimental television broadcasts were started in 1929, using an electromechanical 30-line system developed by John Logie Baird . Limited regular broadcasts using this system began in 1934 and an expanded service (now known as BBC Television ) started from Alexandra Palace in November 1936. Television in the United States had long been dominated by

9504-410: The other hand, television networks also undergo the impending experience of major changes related to cultural varieties. The emergence of cable television has made available in major media markets, programs such as those aimed at American bi-cultural Latinos. Such a diverse captive audience presents an occasion for the networks and affiliates to advertise the best programming that needs to be aired. This

9612-447: The ownership cap, owns and operates all of its stations. TXN Network is also not covered by the ownership cap due to the network's low number of affiliates (which are all owned by the network). In Brazil , government regulations limit the number of owned-and-operated stations that a television network can own based on the percentage of total national market reach. As a result, the five main national networks tend to have O&Os only in

9720-502: The public and the broadcasters themselves will often refer to them as "networks" regardless. Some of these systems, such as CTV 2 and the now-defunct E! , essentially operate as mini-networks, but have reduced geographical coverage. Others, such as Omni Television or the Crossroads Television System , have similar branding and a common programming focus, but schedules may vary significantly from one station to

9828-463: The remainder of MyNetworkTV's schedule. From September 1, 2016, to August 31, 2019, the largest current-day market example of a dual affiliation was with Fox Television Stations 's WPWR-TV , a Gary, Indiana -licensed station serving the entire Chicago market, which carried a primary affiliation with The CW , while maintaining Fox's MyNetworkTV programming service in a late night timeslot. Beginning on September 1, 2019, The CW affiliation of WPWR-TV

9936-528: The same market – WABC-TV ( ABC ), WCBS-TV ( CBS ), WNBC ( NBC ), WNJU ( Telemundo ), WNYW ( Fox ), WWOR-TV ( MyNetworkTV ), WPXN-TV ( Ion Television ), WXTV-DT ( Univision ) and WFUT-DT ( UniMás ) – are O&Os. A similar rule exists in Japan , in which regulations governed by the Ministry of Internal Affairs and Communications limit the number of network-owned commercial television stations as

10044-899: The same programming across the entire country with the only regional deviations being for local advertising; a regional news service existed in the 1980s, carrying a regional news programme from TVNZ's studios in New Zealand's four largest cities, Auckland, Wellington , Christchurch and Dunedin . In the 1960s, the service operated at the time by the New Zealand Broadcasting Corporation was four separate television stations – AKTV2 in Auckland, WNTV1 in Wellington, CHTV3 in Christchurch and DNTV2 in Dunedin – which each ran their own newscast and produced some in-house programmes, with other shows being shared between

10152-562: The sense defined above, as they are singular operations – they have no affiliates or component stations, but instead are distributed to the public via cable or direct-broadcast satellite providers. Such networks are commonly referred to by terms such as " specialty channels " in Canada or " cable networks " in the U.S. A network may or may not produce all of its own programming. If not, production companies (such as Warner Bros. Television , Universal Television , Sony Pictures Television and TriStar Television ) can distribute their content to

10260-519: The sign-on of DuMont's WDTV in Pittsburgh, the Midwest and East Coast networks were finally connected by coaxial cable (with WDTV airing the best shows from all four networks). By 1951, the four networks stretched from coast to coast, carried on the new microwave radio relay network of AT&T Long Lines . Only a few local television stations remained independent of the networks. Each of

10368-552: The station four different network affiliations between three subchannels. In Canada, affiliated stations may acquire broadcast rights to programs from a network other than their primary affiliation, but as such an agreement pertains only to a few specific programs, which are chosen individually, they are not normally considered to be affiliated with the second network. CJON-DT in St. John's , Newfoundland , nominally an independent station , uses this model to acquire programming from CTV and

10476-456: The stations for the 8 PM ET/PT Thursday time slot for 10 weeks. In the winter of 1976, Mobil launched its first show, Ten Who Dared , hosted by Anthony Quinn and adapted from a 1975 BBC documentary series, which was originally shown in the UK as The Explorers and presented by David Attenborough . The show dramatized the adventures of various explorers (including James Cook , Christopher Columbus , Roald Amundsen and Mary Kingsley ), and

10584-624: The stations. Programmes and news footage were distributed via mail, with a programme airing in one region being mailed to another region for broadcast the following week. A network was finally established in 1969, with the same programmes being relayed to all regions simultaneously. From the 1970s to the 1990s, locally produced programmes that aired on TV One and TV2 were produced out of one of the four main studios, with TVNZ's network hub based in Wellington. Today, most locally produced programmes that are aired by both TVNZ and other networks are not actually produced in-house, instead they are often produced by

10692-430: The terms "television network", " television channel " (a numeric identifier or radio frequency ) and "television station" have become mostly interchangeable in everyday language, with professionals in television-related occupations continuing to make a differentiation between them. Within the industry, a tiering is sometimes created among groups of networks based on whether their programming is simultaneously originated from

10800-545: The two main private English-language over-the-air services, CTV and Global , are also generally considered to be "networks" by virtue of their national coverage, although they are not officially licensed as such. CTV was previously a licensed network, but relinquished this license in 2001 after acquiring most of its affiliates, making operating a network license essentially redundant (per the above definition). Smaller groups of stations with common branding are often categorized by industry watchers as television systems , although

10908-480: The use of local marketing agreements and shared services agreements to operate a second station nominally owned by another broadcaster. These may be supplemented by LPTV or repeater stations to allow more channels to be added without encountering federally imposed limits on concentration of media ownership . Often, the multiple commonly controlled stations will use the same news and local advertising sales operations, but carry different network feeds. Further, with

11016-471: The various networks, and it is common that a certain production firm may have programs that air on two or more rival networks. Similarly, some networks may import television programs from other countries, or use archived programming to help complement their schedules. Some stations have the capability to interrupt the network through the local insertion of television commercials, station identifications and emergency alerts . Others completely break away from

11124-480: Was affiliated with both CBS and NBC). The digital conversion allowed KXGN to carry CBS and NBC programming side-by-side on separate subchannels, essentially becoming a primary affiliate of both networks. This is the most common type of "dual affiliation" existing today in the digital TV age. In larger markets, multiple full-service channels may be operated by the same broadcaster using broadcast automation , either openly as duopoly or twinstick operations , or through

11232-1486: Was founded in 1965. It grew to become the largest and most successful media conglomerate in the country, having a dominating presence in various forms of media including television, radio, print (newspapers and magazines) and the Internet. Other networks include Rede Bandeirantes , RecordTV , SBT , RedeTV! , TV Cultura , and TV Brasil . Australia has two national public networks, ABC Television and SBS . The ABC operates eight stations as part of its main network ABC TV , one for each state and territory, as well as three digital-only networks, ABC Kids / ABC TV Plus , ABC Me and ABC News . SBS currently operates six stations, SBS , SBS Viceland , SBS World Movies , SBS Food , NITV and SBS WorldWatch . The first commercial networks in Australia involved commercial stations that shared programming in Sydney , Melbourne , Brisbane , Adelaide and later Perth , with each network forming networks based on their allocated channel numbers: TCN-9 in Sydney, GTV-9 in Melbourne, QTQ-9 in Brisbane, NWS-9 in Adelaide and STW-9 in Perth together formed

11340-441: Was one of the highest budgeted BBC shows for its time. The commercials were exclusively for Mobil, with some of them in a "documentary" or reality-based format showing Mobil employees out in the field, and shown in a positive light. The show beat the networks in the ratings, defeating NBC 's The Fantastic Journey , and even CBS 's The Waltons . Based on the ratings, Mobil arranged for two more "'non-network' series." In 1979,

11448-431: Was operated by the British Broadcasting Corporation ( BBC ). On 2 November 1936 the BBC opened the world's first regular high-definition television service, from a 405 lines transmitter at Alexandra Palace. The BBC remained dominant until eventually on 22 September 1955, commercial broadcasting was established to create a second television network. Rather than creating a single network with local channels owned and operated by

11556-441: Was replaced by the timeshift channel TV One Plus 1. The network operated by Television New Zealand has progressed from operating as four distinct local stations within the four main centers in the 1960s, to having the majority of the content produced from TVNZ's Auckland studios at present. New Zealand also has several privately owned television networks with the largest being operated by MediaWorks . MediaWorks' flagship network

11664-719: Was televised to a few hundred receivers over the NBC station W2XBS (which evolved into WNBC ) as well as seen in Schenectady, New York via W2XB (which evolved into WRGB ) via off-air relay from the New York station. NBC had earlier demonstrated an inter-city television broadcast on 1 February 1940, from its station in New York City to another in Schenectady , New York by General Electric relay antennas, and began transmitting some programs on an irregular basis to Philadelphia and Schenectady in 1941. Wartime priorities suspended

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