Class A television service
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The class A television service is a system for regulating some low-power
television Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertising, ...
( LPTV) stations in the United States. Class A stations are denoted by the broadcast callsign suffix "-CA" (analog) or "-CD" (digital), although very many analog -CA stations have a digital companion channel that was assigned the -LD suffix used by regular (non-class-A) digital LPTV stations. The FCC created this category of service as a result of the Community Broadcasters Protection Act of 1999. Support for this ruling came largely from the
Community Broadcasters Association The Community Broadcasters Association (CBA) was a trade organization representing low-power broadcasting interests, including LPTV and Class A television stations, in the United States of America. It ceased operations in 2009. History Key issues a ...
, an industry group representing low-power TV station operators.FCC, April 21, 1998, Petition for rulemaking for "CLASS A" TV service
/ref> Unlike traditional LPTV stations, class-A stations were given primary status during the transition to digital television (DTV), meaning that a full-service television station could not displace a class A LPTV station from its broadcast frequency ( TV channel), except in rare cases. In contrast, traditional LPTV stations often found their frequencies assigned to full-service DTV operations, forcing them to relocate to another frequency. This was especially true in large cities, where available broadcast spectrum was scarce, and LPTV stations found themselves forced to cease operations due to no suitable spectrum. This was especially so with the taking of the 700 MHz band (channels 52 to 69) from the upper
UHF Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (on ...
TV band.


Requirements

In exchange for the added broadcast protections, class-A stations are required to be more responsible in covering the community they serve. Class-A stations must: * Broadcast a minimum of 18 hours per day * Broadcast an average of at least three hours per week of programming produced within the
media market A media market, broadcast market, media region, designated market area (DMA), television market area, or simply market is a region where the population can receive the same (or similar) television and radio station offerings, and may also incl ...
area served by the station * Be in compliance with the Commission's requirements for both LPTV stations and full-power television stations * Broadcast on a core frequency (channels 2 - 36) * Broadcast the minimum required amount of Children's " E/I" core programming * Be capable of airing
Emergency Alert System The Emergency Alert System (EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite, or broadcast television, and bot ...
broadcasts when/if the need arises An LPTV station could also qualify for class-A status if it follows the FCC's "
public interest The public interest is "the welfare or well-being of the general public" and society. Overview Economist Lok Sang Ho in his ''Public Policy and the Public Interest'' argues that the public interest must be assessed impartially and, therefor ...
, convenience, and necessity" standards.


Limitations

A class-A television station may obtain a license to broadcast digitally at not more than 15 kW UHF or 3,000
watt The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James ...
s VHF, but is not required to do so. These are the same maximum power levels as for unprotected (secondary) low-power television stations. Unlike full-service stations, class-A television stations are not subject to limits on common ownership which restrict full-power twinstick or duopoly operations; they were required to cease analog broadcasting in 2015, as opposed to 2009 for full-power stations. They also were not required to
simulcast Simulcast (a portmanteau of simultaneous broadcast) is the broadcasting of programmes/programs or events across more than one resolution, bitrate or medium, or more than one service on the same medium, at exactly the same time (that is, simul ...
their programming in analog and digital format during the US digital transition, unlike most full-service stations. Despite the name of the act of law which created it, there is no requirement that a class-A station be an independent or community broadcaster, and some class-A stations are simply used as broadcast translators for other stations. In some communities, existing full-service broadcasters have operated an analog class A station together with a simulcast as a digital subchannel of a main full-service station, as a means to affiliate with two national TV networks.


See also

* Low-power broadcasting *
List of broadcast station classes This is a list of broadcast station classes applicable in much of North America under international agreements between the United States, Canada and Mexico. Effective radiated power (ERP) and height above average terrain (HAAT) are listed unless o ...


References

{{reflist


External links


FCC Class A Television site
Broadcast law Television in the United States