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Alabama Public Radio
Alabama Public Radio (APR) is a network of public radio stations based in Tuscaloosa, Alabama, United States, that serves roughly the western half of the state of Alabama with classical music, folk music, and nostalgic music programs, as well as news and feature programs from the National Public Radio (NPR), Public Radio International (PRI), and American Public Media (APM) networks. The network is operated by the University of Alabama, with studios in Tuscaloosa. Since the station is licensed to a university with a broadcasting curriculum, students in the UA College of Communication and Information Sciences get opportunities for practical training in announcing and other varied production duties. Nonetheless, APR maintains a small professional staff, as well as several volunteer announcers from the larger community. The Alabama Public Radio newsroom has recently won over 50 awards for journalism excellence, one-third of which are at the national and international levels. This ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuscaloosa, Alabama
Tuscaloosa ( ) is a city in and the seat of Tuscaloosa County in west-central Alabama, United States, on the Black Warrior River where the Gulf Coastal and Piedmont plains meet. Alabama's fifth-largest city, it had an estimated population of 101,129 in 2019. It was known as Tuskaloosa until the early 20th century. It is also known as ''"the Druid City"'' because of the numerous water oaks planted in its downtown streets since the 1840s. Incorporated on December 13, 1819, it was named after Tuskaloosa, the chief of a band of Muskogean-speaking people defeated by the forces of Spanish explorer Hernando de Soto in 1540 in the Battle of Mabila, in what is now central Alabama. It served as Alabama's capital city from 1826 to 1846. Tuscaloosa is the regional center of industry, commerce, healthcare and education for the area of west-central Alabama known as ''West Alabama;'' and the principal city of the Tuscaloosa Metropolitan Statistical Area, which includes Tuscaloosa, Hale and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring Hill College
Spring Hill College is a private, Jesuit college in Mobile, Alabama. It was founded in 1830 by Michael Portier, Bishop of Mobile. Along with being the oldest college or university in the state of Alabama, it was the first Catholic college in the South, is the fifth-oldest Catholic college in the United States, and is the third-oldest member of the Association of Jesuit Colleges and Universities. History Spring Hill College was founded by the first bishop of Mobile, Michael Portier, who was from France. After purchasing a site for the college on a hill near Mobile, Bishop Portier went to France to recruit teachers and raise funds for the new college. Portier recruited two priests and four seminarians from France to staff the school. A friend of Portier, Cardinal Joseph Fesch, Archbishop of Lyons, was a major benefactor to the fledgling College, donating his philosophical and theological library and various works of art. Pauline Jaricot, founder of the Society of the Propagation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WHIL (FM)
WHIL (91.3 FM) is an NPR-affiliated radio station in Mobile, Alabama. It primarily features classical music and news and talk programming. WHIL's signal travels in about a 45-mile radius from Mobile—serving the extreme southern tip of Alabama along the state's portion of the Gulf Coast (and some counties to the north, in southwestern Alabama), as well as the Gulf Coast counties of southeastern Mississippi and extreme northwestern Florida. Until 2011, the station maintained studios on the campus of Spring Hill College, a Jesuit institution that started the station and held the broadcast license. On July 1, 2011, WHIL-FM discontinued operations as a stand-alone station, having been acquired by the University of Alabama to serve as a local affiliate for its Alabama Public Radio network. History WHIL first broadcast as WHIL-FM on September 5, 1979. Only a week later, Hurricane Frederic struck the Alabama Gulf Coast, rendering the station silent for some time thereafter due to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foot (unit)
The foot ( feet), standard symbol: ft, is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, , is a customarily used alternative symbol. Since the International Yard and Pound Agreement of 1959, one foot is defined as 0.3048 meters exactly. In both customary and imperial units, one foot comprises 12 inches and one yard comprises three feet. Historically the "foot" was a part of many local systems of units, including the Greek, Roman, Chinese, French, and English systems. It varied in length from country to country, from city to city, and sometimes from trade to trade. Its length was usually between 250 mm and 335 mm and was generally, but not always, subdivided into 12 inches or 16 digits. The United States is the only industrialized nation that uses the international foot and the survey foot (a customary unit of length) in preference to the meter in its commercial, engin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metre
The metre (British spelling) or meter (American spelling; see spelling differences) (from the French unit , from the Greek noun , "measure"), symbol m, is the primary unit of length in the International System of Units (SI), though its prefixed forms are also used relatively frequently. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately km. In 1799, the metre was redefined in terms of a prototype metre bar (the actual bar used was changed in 1889). In 1960, the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86. The current definition was adopted in 1983 and modified slightly in 2002 to clarify that the metre is a measure of proper length. From 1983 until 2019, the metre was formally defined as the length of the path travelled by light in a vacuum in of a second. After the 2019 redefi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Height Above Average Terrain
Height above average terrain (HAAT), or (less popularly) effective height above average terrain (EHAAT), is the vertical position of an antenna site is above the surrounding landscape. HAAT is used extensively in FM radio and television, as it is more important than effective radiated power (ERP) in determining the range of broadcasts ( VHF and UHF in particular, as they are line of sight transmissions). For international coordination, it is officially measured in meters, even by the Federal Communications Commission in the United States, as Canada and Mexico have extensive border zones where stations can be received on either side of the international boundaries. Stations that want to increase above a certain HAAT must reduce their power accordingly, based on the maximum distance their station class is allowed to cover (see List of North American broadcast station classes for more information on this). The FCC procedure to calculate HAAT is: from the proposed or actual antenna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Effective Radiated Power
Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity (signal strength or power flux density in watts per square meter) as the actual source antenna at a distant receiver located in the direction of the antenna's strongest beam (main lobe). ERP measures the combination of the power emitted by the transmitter and the ability of the antenna to direct that power in a given direction. It is equal to the input power to the antenna multiplied by the gain of the antenna. It is used in electronics and telecommunications, particularly in broadcasting to quantify the apparent power of a broadcasting station experienced by listeners in its reception area. An alternate parameter that measures the same thing is effec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Facility ID
The facility ID number, also called a FIN or facility identifier, is a unique integer number of one to six digits, assigned by the U.S. Federal Communications Commission (FCC) Media Bureau to each broadcast station in the FCC Consolidated Database System (CDBS) and Licensing and Management System (LMS) databases, among others. Because CDBS includes information about foreign stations which are notified to the U.S. under the terms of international frequency coordination agreements, FINs are also assigned to affected foreign stations. However, this has no legal significance, and the numbers are not used by the regulatory authorities in those other countries. Current FCC practice is to assign facility ID numbers sequentially, but this is not an official requirement, so third-party users must not rely on it. Unlike call signs, however, the FIN associated with a particular station never changes; thus, the FCC staff and interested parties can be certain to which station an application p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City Of License
In American, Canadian, and Mexican broadcasting, a city of license or community of license is the community that a radio station or television station is officially licensed to serve by that country's broadcast regulator. In North American broadcast law, the concept of ''community of license'' dates to the early days of AM radio broadcasting. The requirement that a broadcasting station operate a ''main studio'' within a prescribed distance of the community which the station is licensed to serve appears in United States federal law, U.S. law as early as 1939. Various specific obligations have been applied to broadcasters by governments to fulfill public policy objectives of broadcast localism (politics), localism, both in radio and later also in television, based on the legislative presumption that a broadcaster fills a similar role to that held by community newspaper publishers. United States In the United States, the Communications Act of 1934 requires that "the Commission s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency
Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is equal to one event per second. The period is the interval of time between events, so the period is the reciprocal of the frequency. For example, if a heart beats at a frequency of 120 times a minute (2 hertz), the period, —the interval at which the beats repeat—is half a second (60 seconds divided by 120 beats). Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light. Definitions and units For cyclical phenomena such as oscillations, waves, or for examples of simple harmonic motion, the term ''frequency'' is defined as the number of cycles or vibrations per unit of time. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Call Signs In North America
Call signs are frequently still used by North American broadcast stations, in addition to amateur radio and other international radio stations that continue to identify by call signs around the world. Each country has a different set of patterns for its own call signs. Call signs are allocated to ham radio stations in Barbados, Canada, Mexico and across the United States. Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The call sign format for radio and television call signs follows a number of conventions. All call signs begin with a prefix assigned by the International Telecommunication Union. For example, the United States has been assigned the following prefixes: AAA–ALZ, K, N, W. For a complete list, see international call sign allocations. Bermuda, Bahamas, and the Caribbean Pertaining to their status as former or current colonies, all of the British West Indies islands shared the VS, ZB–ZJ, and ZN–ZO p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
