Class A television service
Encyclopedia
The class A television service is a system for regulating some low-power television
Television station
A television station is a business, organisation or other such as an amateur television operator that transmits content over terrestrial television. A television transmission can be by analog television signals or, more recently, by digital television. Broadcast television systems standards are...

 (LPTV
Low-power broadcasting
Low-power broadcasting is electronic broadcasting at very low power and low cost, to a small community area.The terms "low-power broadcasting" and "micropower broadcasting" should not be used interchangeably, because the markets are not the same...

) 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
Federal Communications Commission
The Federal Communications Commission is an independent agency of the United States government, created, Congressional statute , and with the majority of its commissioners appointed by the current President. The FCC works towards six goals in the areas of broadband, competition, the spectrum, the...

 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
Community Broadcasters Association
The Community Broadcasters Association was a trade organization representing low-power broadcasting interests, including LPTV and Class A television stations, in the United States of America...

, an industry group representing low-power TV station operators.

Unlike traditional LPTV stations, class-A stations were given primary status during the transition to digital television
Digital television in the United States
In the United States, digital television broadcasts, or DTV, can be received via cable, via internet, via satellite, or via free over-the-air digital terrestrial television - much like analog television broadcasts have been. Full-power analog television broadcasts, however, were required by U.S....

 (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 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
    Media market
    A media market, broadcast market, media region, designated market area , Television Market Area , or simply market is a region where the population can receive the same television and radio station offerings, and may also include other types of media including newspapers and Internet content...

     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 - 51)
  • Broadcast the minimum required amount of Children's "E/I
    E/I
    E/I, which stands for "educational and informative," refers to a type of children's television programming shown in the United States. The Federal Communications Commission requires that every full-service Terrestrial television station in the U.S. show at least three hours of these television...

    " core programming
  • Be capable of airing Emergency Alert System
    Emergency Alert System
    The Emergency Alert System is a national warning system in the United States put into place on January 1, 1997, when it superseded the Emergency Broadcast System , which itself had superseded the CONELRAD System...

     broadcasts when/if the need arises


An LPTV station could also qualify for class-A status if it follows the FCC's "public interest
Public interest
The public interest refers to the "common well-being" or "general welfare." The public interest is central to policy debates, politics, democracy and the nature of government itself...

, 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
Watt
The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

s VHF, but is not required to do so. These are the same maximum power levels as for unprotected (secondary) low-power television
Low-power broadcasting
Low-power broadcasting is electronic broadcasting at very low power and low cost, to a small community area.The terms "low-power broadcasting" and "micropower broadcasting" should not be used interchangeably, because the markets are not the same...

 stations.

Unlike full-service stations, class-A television stations are not subject to limits on common ownership
Concentration of media ownership
Concentration of media ownership refers to a process whereby progressively fewer individuals or organizations control increasing shares of the mass media...

 which restrict full-power twinstick
Twinstick
A twinstick, in Canadian broadcasting, is a term for two television stations, broadcasting in the same market, which are owned by the same company...

 or duopoly
Duopoly (broadcasting)
In United States broadcast television and radio, duopoly is a term used to describe a single company which owns two or more stations in the same city or community....

 operations, and were not required to cease analog broadcasting in 2009
DTV transition in the United States
The DTV transition in the United States was the switchover from analog to exclusively digital broadcasting of free over-the-air television programming...

. They also are not required to simulcast
Simulcast
Simulcast, shorthand for "simultaneous broadcast", refers to programs or events broadcast across more than one medium, or more than one service on the same medium, at the same time. For example, Absolute Radio is simulcast on both AM and on satellite radio, and the BBC's Prom concerts are often...

 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
Digital subchannel
In broadcasting, digital subchannels are a means to transmit more than one independent program at the same time from the same digital radio or digital television station on the same radio frequency channel. This is done by using data compression techniques to reduce the size of each individual...

 of a main full-service station, as a means to affiliate with two national TV networks.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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