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XEWA-AM
XHEWA-FM/XEWA-AM are commercial radio stations in San Luis Potosí City, San Luis Potosí, Mexico. XEWA broadcasts on 540 AM and is a Class A station. Its transmitter is in Soledad de Graciano Sánchez. XEWA is one of the highest powered radio stations in North America, broadcasting at 150,000 watts, using a directional antenna by day and a non-directional antenna at night. 540 AM is a Mexican and Canadian clear-channel frequency. XHEWA broadcasts on 103.9 FM, with an effective radiated power (ERP) of 25,000 watts. Its tower is also in Soledad de Graciano Sánchez. The two stations are owned by Radiópolis. They carry a Top 40 (CHR) radio format, playing both Spanish and English language hits, known as "Los 40." History XEWA received its concession on December 2, 1948, one of a string of repeaters of XEW-AM 900 Mexico City authorized in the late 1940s. XEWA began operations on the frequency of 540 kHz with 150,000 watts of power — still its current levels, mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
540 AM
The following radio broadcasting, radio stations broadcast on AM broadcasting, AM frequency 540 kHz: 540 AM is a Canadian and Mexican clear-channel frequency. CBK (AM), CBK, Watrous, Saskatchewan, Watrous-Regina, Saskatchewan, CBT (AM), CBT Grand Falls-Windsor, Newfoundland and Labrador, and XEWA-AM, XEWA San Luis Potosí, Mexico, share list of broadcast station classes, Class A status on 540 kHz. Argentina * LRA Radio Nacional, LRA14 in Santa Fe, Santa Fe. * LRA Radio Nacional, LRA25 in Tartagal, Salta. * LU17 in Puerto Madryn, Chubut. * Radio Pasión in Buenos Aires. * Presidente Perón (radio station), Presidente Perón in Buenos Aires. Australia * ABC Western Queensland, 4QL in Longreach, Queensland * 7SD in Scottsdale, Tasmania Belgium * Vlaamse Radio- en Televisieomroeporganisatie, ORU Brussels Brazil * Rádio Nacional da Amazônia, ZYH295 in Manaus, Amazonas * Rádio Jornal (Canindé), ZYH610 in Canindé, Ceará * Rede Aleluia, ZYH755 in Goiânia, Goiás ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiópolis
Radiópolis (incorporated as Sistemas Radiópolis, S.A. de C.V.) is a Mexican radio broadcast company that owns AM and FM radio stations in Mexico and syndicates music and talk formats. It is the former radio division of Televisa, which spun its stake off to Corporativo Coral, S.A. de C.V., in 2020 to focus on its core television and telecommunications businesses. Since 2001, Radiópolis has been a joint venture with Spanish media conglomerate Grupo PRISA. History Radiópolis got its start with the establishment of each of the Mexico City stations in the 1930s and 1940s. XEW-AM, founded by Emilio Azcárraga Vidaurreta, came on air September 18, 1930 and immediately became the country's most important broadcaster. XEQ-AM was established eight years later, and in 1947, XEX-AM joined the stable. Several repeaters of XEW were built in the late 1940s and early 1950s, including XEWK-AM in Guadalajara, two XEWA-AM stations in Monterrey and San Luis Potosí, and XEWB-AM in Veracruz. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clear-channel
A clear-channel station is an AM broadcasting, AM radio station in North America that has the highest protection from Interference (communication), interference from other stations, particularly concerning night-time skywave propagation. The system exists to ensure the viability of cross-country or cross-continent radio service enforced through a series of treaties and statutory laws. Known as Class A stations since 1982, they are occasionally still referred to by their former classifications of Class I-A (the highest classification), Class I-B (the next highest class), or Class I-N (for stations in Alaska too far away to cause interference to the primary clear-channel stations in the lower 48 states). The term "clear-channel" is used most often in the context of North America and the Caribbean, where the concept originated. Since 1941, these stations have been required to maintain an effective radiated power of at least 10,000 watts to retain their status. Nearly all such station ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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] |
San Luis Potosí City
San Luis Potosí, commonly called SLP or simply San Luis, is the capital and the most populous city of the Mexican state of San Luis Potosí. It is the municipal seat of the surrounding municipality of San Luis Potosí. The city lies at an elevation of . It has an estimated population of 824,229 in the city proper and a population of approximately 1,221,526 in its metropolitan area, formed with the neighbour city of Soledad de Graciano Sánchez and other surrounding municipalities, which makes the metropolitan area of Greater San Luis Potosí the eleventh largest in Mexico. The city is in the west-central part of the state of San Luis Potosí, at 22.16°N, 100.98°W. The municipality has an area of . It is part of the macroregion of Bajío. The city is named after Louis IX of France (also known in Mexico as ''San Luis Rey de Francia'', Saint Louis, King of France), who is the city's patron saint. ''Potosí'' was added in reference to the fabulously rich mines of Potosí, Bol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soledad De Graciano Sánchez
Soledad de Graciano Sánchez, formerly Soledad Diez Gutiérrez, is the second-largest city of the state of San Luis Potosí in Mexico. It lies adjacent to the east side of the state's capital city of San Luis Potosí, San Luis Potosí, San Luis Potosí in the west-central part of the state. The city is the municipal seat of the municipalities of Mexico, municipality of the same name. The city had a 2020 Census population of 310,192, while the municipality's population was 332,072. The municipality has an area of . History The municipality of Soledad de Graciano Sanchez is located in the state of San Luis Potosí, Mexico. The current territory of the municipality of Soledad was occupied during the pre-Hispanic era by hunter groups known as the Guachichil. Originally founded as Los Ranchos, locals built a hermitage to venerate the Virgen de la Soledad. The place was renamed Ranchos de Nuestra Señora de la Soledad in 1758 and then Villa de la Soledad in 1827. Food The most common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directional Antenna
A directional antenna or beam antenna is an antenna which radiates or receives greater power in specific directions allowing increased performance and reduced interference from unwanted sources. Directional antennas provide increased performance over dipole antennas—or omnidirectional antennas in general—when greater concentration of radiation in a certain direction is desired. A high-gain antenna (HGA) is a directional antenna with a focused, narrow radiowave beam width, permitting more precise targeting of the radio signals. Most commonly referred to during space missions, these antennas are also in use all over Earth, most successfully in flat, open areas where there are no mountains to disrupt radiowaves. By contrast, a low-gain antenna (LGA) is an omnidirectional antenna with a broad radiowave beam width, that allows the signal to propagate reasonably well even in mountainous regions and is thus more reliable regardless of terrain. Low-gain antennas are often used in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omnidirectional Antenna
In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis. When graphed in three dimensions ''(see graph)'' this radiation pattern is often described as ''doughnut-shaped''. Note that this is different from an isotropic antenna, which radiates equal power in ''all'' directions, having a ''spherical'' radiation pattern. Omnidirectional antennas oriented vertically are widely used for nondirectional antennas on the surface of the Earth because they radiate equally in all horizontal directions, while the power radiated drops off with elevation angle so little radio energy is aimed into the sky or down toward the earth and wasted. Omnidirectional antennas are widely used for radio broadcasting antennas, and in mobile devices that use radio such as cell phones, FM radios, walkie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Masts And Towers
Radio masts and towers are typically tall structures designed to support antennas for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest human-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them. In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna. Terminology The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guys. Broadcast engineers in the UK use the same terminology. A mast is a ground-based or rooftop structure that supports antennas at a height where they can satisfactorily send or receive radio waves. Typical masts are of steel lattice or tubular steel construction. Masts themselves play no part in t ... [...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 Format
A radio format or programming format (not to be confused with broadcast programming) describes the overall content broadcast on a radio station. The radio format emerged mainly in the United States in the 1950s, at a time when Radio broadcasting, radio was compelled to develop new and exclusive ways to programming by competition with Television broadcasting, television. The formula has since spread as a reference for commercial radio programming worldwide. A radio format aims to reach a more or less specific audience according to a certain type of programming, which can be thematic or general, more informative or more musical, among other possibilities. Radio formats are often used as a marketing tool and are subject to frequent changes. Except for talk radio or sports radio formats, most programming formats are based on commercial music. However the term also includes the news, bulletins, DJ talk, jingles, commercials, competitions, traffic news, sports, weather and community an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
