|
WJSM (AM)
WJSM is a religious radio station serving the Altoona, Pennsylvania market, known as ''Victory Radio''. The radio station is an outlet for evangelists such as Dr. James Dobson and others. History WJSM Radio had its start many years ago by a man with a dream for South Central Pennsylvania to have its own Christian radio station. He was Kenneth W. Ferry of Martinsburg, who owned a trucking firm, and while driving heard a western Centre County-based Christian Station, WPHB in Philipsburg, founded by Reverend William Emert. That station programs country music and talk programming today, with religious programming reserved for Sundays. Inspired by the experience, Ferry thought that the Martinsburg area needed a station like that and began by filing an application for an AM station in the early 1960s. After several applications and amendments to those applications, the FCC granted a construction permit for an FM station instead. WJSM-FM pioneered FM Christian Broadcasting with its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altoona, Pennsylvania
Altoona is a city in Blair County, Pennsylvania. It is the principal city of the Altoona Metropolitan Statistical Area (MSA). The population was 43,963 at the time of the 2020 Census, making it the eighteenth most populous city in Pennsylvania. The Altoona MSA includes all of Blair County and was recorded as having a population of 122,822 at the 2020 Census, around 100,000 of whom live within a radius of the Altoona city center according to U.S. Census ZIP Code population data. This includes the adjacent boroughs of Hollidaysburg and Duncansville, adjacent townships of Logan, Allegheny, Blair, Frankstown, Antis, and Tyrone, as well as nearby boroughs of Bellwood and Newry. Having grown around the railroad industry, the city has worked to recover from industrial decline and urban decentralization experienced in recent decades. The city is home to the Altoona Curve baseball team of the Eastern League, which is the AA affiliate of the Pittsburgh Pirates Major League Baseba ... [...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] |
Radio Stations In Altoona, Pennsylvania
Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like aircraft, ships, spacecraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1965 In Radio
The year 1965 saw a number of significant events in radio broadcasting. Events *19 April: WINS (AM) in New York switches from Top 40 to all-news, with the slogan "You give us 22 minutes, we'll give you the world." *19 June: After a multi-year courtroom battle which involved accusations of extortion, the FCC reversed a 1956 station ownership trade between Westinghouse Broadcasting and NBC. Westinghouse reclaimed their original Philadelphia stations, while NBC was ordered to take over their former owned-and-operated stations in Cleveland. The KYW call letters originally went from Philadelphia to Cleveland in 1956, and back to Philadelphia with the reversal, with NBC renaming the Cleveland stations WKYC AM/ FM/ TV. *18 August: Marlene Dietrich appears in "The Child" for BBC radio. *21 September: KYW (AM), shortly after relocating back to Philadelphia, institutes an all-news format patterned after WINS (AM). *11 October: The Dutch popular-music channel Hilversum 3 (now 3FM) begin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1968 In Radio
The year 1968 saw a number of significant events in radio broadcasting history. __TOC__ Events * 1 January – ABC divides its radio network into four networks.Cox, Jim (2008). ''This Day in Network Radio: A Daily Calendar of Births, Debuts, Cancellations and Other Events in Broadcasting History''. McFarland & Company, Inc. . P. 5. * 1 February – WABX Detroit drops classical music to air progressive rock/ freeform full-time. * 1 February – WKYC-AM in Cleveland (today WTAM) alters its Top 40 format to "Power Radio," a "more music"–style presentation derivative of Drake-Chenuault. * 11 March – KFWB in Los Angeles becomes the third Westinghouse Broadcasting station to launch an all-news format, patterned after KYW (AM) in Philadelphia and WINS (AM) in New York. * 15 March – WBCN in Boston, Massachusetts begins to drop easy listening for progressive rock/ freeform. * 18 March – KMPX program director Tom Donahue turns in his resignation, citing conflicts with station mana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martinsburg, Pennsylvania
Martinsburg is a borough in the Morrisons Cove section of Blair County, Pennsylvania, United States. The population was 1,874 at the 2020 census. It is part of the Altoona, PA Metropolitan Statistical Area. History The community was named after John Martin, a pioneer citizen. Geography Martinsburg is located at (40.310548, -78.325628). According to the United States Census Bureau, the borough has a total area of , all land. Demographics As of the census of 2000, there were 2,236 people, 892 households, and 544 families residing in the borough. The population density was 3,544.3 people per square mile (1,370.4/km²). There were 924 housing units at an average density of 1,464.6 per square mile (566.3/km²). The racial makeup of the borough was 99.46% White, 0.09% Native American, 0.04% Asian, 0.04% from other races, and 0.36% from two or more races. Hispanic or Latino of any race were 0.36% of the population. There were 892 households, out of which 26.3% had children under th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of North American 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 otherwise noted. All radio and television stations within of the US-Canada or US-Mexico border must get approval by both the domestic and foreign agency. These agencies are Industry Canada/Canadian Radio-television and Telecommunications Commission (CRTC) in Canada, the Federal Communications Commission (FCC) in the US, and the Federal Telecommunications Institute (IFT) in Mexico. AM Station class descriptions All domestic (United States) AM stations are classified as A, B, C, or D. * A (formerly I) — clear-channel stations — 10 kW to 50 kW, 24 hours. **Class A stations are only protected within a radius of the transmitter site. **The old Class I was divided into three: Class I-A, I-B and I-N. NARBA distinguishe ... [...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] |
