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KMJ (AM)
KMJ (580 kHz) is a commercial AM radio station in Fresno, California. It airs a news/talk radio format, and simulcasts with sister station KMJ-FM. Owned by Cumulus Media, the studios and offices are located at the Radio City building on Shaw Avenue in North Fresno. The transmitter site is in Orange Cove, California, on East American Avenue at Cove Road. While AM 580 is a regional broadcast frequency, the station is powered at 50,000 watts, the highest power for an AM station permitted by the Federal Communications Commission (FCC). To protect other stations on AM 580, KMJ uses a four-tower array directional antenna. The signal covers most of Central California and reaches into the Bay Area, Sacramento and Bakersfield. KMJ is Central California's primary entry point station in the Emergency Alert System. Programming KMJ-AM-FM focus primarily on locally produced talk programming and news on weekdays. Mornings begin with an agricultural news hour, followed by "Fresno's Mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresno, California
Fresno (; ) is a city in the San Joaquin Valley of California, United States. It is the county seat of Fresno County, California, Fresno County and the largest city in the greater Central Valley (California), Central Valley region. It covers about and had a population of 542,107 as of the 2020 United States census, 2020 census, making it the List of largest California cities by population, fifth-most populous city in California, the most populous inland city in California, and the List of United States cities by population, 34th-most populous city in the nation. Named for the abundant ash trees lining the San Joaquin River, Fresno was founded in 1872 as a railway station of the Central Pacific Railroad before it was Municipal corporation, incorporated in 1885. It has since become an economic hub of Fresno County and the San Joaquin Valley, with much of the surrounding areas in the Metropolitan Fresno region predominantly tied to large-scale agricultural production. Fresno is n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AM Radio
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands. The earliest experimental AM transmissions began in the early 1900s. However, widespread AM broadcasting was not established until the 1920s, following the development of vacuum tube receivers and transmitters. AM radio remained the dominant method of broadcasting for the next 30 years, a period called the "Golden Age of Radio", until television broadcasting became widespread in the 1950s and received much of the programming previously carried by radio. Later, AM radio's audiences declined greatly due to competition from FM (FM broadcasting, frequency modulation) radio, Digital audio broadcasting, Digital Audio Broadcasting (DAB), satellite radio, HD Radio, HD (digital) radio, In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bakersfield, California
Bakersfield is a city in and the county seat of Kern County, California, United States. The city covers about near the southern end of the San Joaquin Valley, which is located in the Central Valley region. Bakersfield's population as of the 2020 Census was 403,455, making it the 47th-most populous city in the United States and the 9th-most populous in California. The Bakersfield–Delano Metropolitan Statistical Area, which includes all of Kern County, had a 2020 census population of 909,235, making it the 62nd largest metropolitan area in the United States. Bakersfield is a significant hub for both agriculture and energy production. Kern County is California's most productive oil-producing county and the fourth most productive agricultural county (by value) in the United States. Industries in and around Bakersfield include natural gas and other energy extraction, mining, petroleum refining, distribution, food processing, and corporate regional offices. The city is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacramento
Sacramento ( or ; ; ) is the capital city of the U.S. state of California and the seat of Sacramento County. Located at the confluence of the Sacramento and American Rivers in Northern California's Sacramento Valley, Sacramento's 2020 population of 524,943 makes it the fourth-most populous city in Northern California, the sixth-most populous in the state, the ninth-most populous state capital, and the 35th most populous city in the United States. Sacramento is the seat of the California Legislature and the governor of California. Sacramento is also the cultural and economic core of the Greater Sacramento area, which at the 2020 census had a population of 2,680,831, the fourth-largest metropolitan area in California. Before the arrival of the Spanish, the area was inhabited by the Nisenan, Maidu, and other indigenous peoples of California. In 1808, Spanish cavalryman Gabriel Moraga surveyed and named the ''Río del Santísimo Sacramento'' (Sacramento River), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Area
The San Francisco Bay Area, commonly known as the Bay Area, is a region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose. The Association of Bay Area Governments defines the Bay Area as including the nine counties that border the estuaries of San Francisco Bay, San Pablo Bay, and Suisun Bay: Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara, Solano, Sonoma, and San Francisco. Other definitions may be either smaller or larger, and may include neighboring counties which are not officially part of the San Francisco Bay Area, such as the Central Coast counties of Santa Cruz, San Benito, and Monterey, or the Central Valley counties of San Joaquin, Merced, and Stanislaus. The Bay Area is known for its natural beauty, prominent universities, technology companies, and affluence. The Bay Area contains many cities, towns, airports, and associated regional, state, and national parks, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directional Antenna
A directional antenna or beam antenna is an antenna that radiates or receives greater radio wave power in specific directions. Directional antennas can radiate radio waves in beams, when greater concentration of radiation in a certain direction is desired, or in receiving antennas receive radio waves from one specific direction only. This can increase the power transmitted to receivers in that direction, or reduce interference from unwanted sources. This contrasts with omnidirectional antennas such as dipole antennas which radiate radio waves over a wide angle, or receive from a wide angle. The extent to which an antenna's angular distribution of radiated power, its radiation pattern, is concentrated in one direction is measured by a parameter called antenna gain. A high-gain antenna (HGA) is a directional antenna with a focused, narrow beam width, permitting more precise targeting of the radio signals. Most commonly referred to during space missions, these antennas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tower Array
A tower array is an arrangement of multiple radio towers which are mast radiators in a phased array. They were originally developed as ground-based tracking radars. Tower arrays can consist of free-standing or guyed towers or a mix of them. Tower arrays are used to constitute a directional antenna of a mediumwave or longwave radio station. The number of towers in a tower array can vary. In many arrays all towers have the same height, but there are also arrays of towers of different height. The arrangement can vary. For directional antennas with fixed radiation pattern, linear arrangements are preferred, while for switchable directional patterns (usually for daytime groundwave versus nighttime skywave), square arrangements are chosen. Examples Tower arrays with guyed masts * Longwave transmitter Europe 1 * Transmitter Weisskirchen * Beidweiler Longwave Transmitter * Transmitter Wachenbrunn * Transmitter Ismaning (VoA-Station) Tower arrays with free-standing towers * Junglins ... [...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 distingu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AM 580
The following radio stations broadcast on AM frequency 580 kHz: 580 AM is classified as a regional broadcast frequency by the Federal Communications Commission. Argentina * Andina in San Rafael, Mendoza * LU20 in Trelew, Chubut * LV15 in Villa Mercedes, San Luis * LW1 in Córdoba, Córdoba. Bolivia * CP 91 in La Paz Brazil * ZYJ-330 in Santa Helena, Paraná * ZYJ-465 in Rio de Janeiro * ZYH-290 in Tefé * ZYH-477 in Alcobaça, Bahia * ZYI-387 in Campo Grande * ZYI-776 in Recife * ZYK-299 in São Gabriel * ZYK-318 in Vacaria * ZYK-540 in Americana, São Paulo state * ZYK-724 in Palmital * ZYK780 in Porto Nacional * ZYL-328 in Uberlandia Canada Chile * CB-058 in Easter Island. Colombia * HJHP in Jamundí Cuba * CMAA in Pinar del Río * CMMF in Baracoa Ecuador * HCPC2 in Guayaquil Guatemala * TGY in Pucá Honduras * HRZQ in Tegucigalpa Jamaica * RJR in Galina Mexico * XEAV-AM in Guadalajara, Jalisco * XEFI-AM in Chihuahua, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orange Cove, California
Orange Cove is a city in Fresno County, California, United States. The population was at the 2020 census, up from at the 2010 census. Description Almost all of Orange Cove's residents are Hispanic, many of them farmers. Orange Cove is located in the San Joaquin Valley, east-northeast of Reedley, at an elevation of . Geography According to the United States Census Bureau, the city has a total area of , all of its land. Climate According to the Köppen Climate Classification system, Orange Cove has a hot-summer Mediterranean climate, abbreviated "Csa" on climate maps. History Elmer M. Sheridan founded the town in 1914, and named it prior to large scale citrus growing. The first post office opened in 1914. The city incorporated in 1948. Demographics 2020 The 2020 United States census reported that Orange Cove had a population of 9,649. The population density was . The racial makeup of Orange Cove was 22.8% White, 0.5% African American, 1.5% Native American, 0.8% Asian, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of signal transmission to a radio receiver. The transmitter itself generates a radio frequency alternating current, which is applied to the Antenna (radio), antenna. When excited by this alternating current, the antenna Electromagnetic radiation, radiates radio waves. Transmitters are necessary component parts of all electronic devices that communicate by radio communication, radio, such as radio broadcasting, radio (audio) and television broadcasting stations, cell phones, walkie-talkies, Wireless LAN, wireless computer networks, Bluetooth enabled devices, garage door openers, two-way radios in aircraft, ships, spacecraft, radar sets and navigational beacons. The term ''transmitter'' is usually limited to equipment that generates radio waves fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Station
In broadcasting, sister stations or sister channels are radio or television stations operated by the same company, either by direct ownership or through a management agreement. Radio sister stations will often have different formats, and sometimes one station is on the AM band while another is on the FM band. Conversely, several types of sister-station relationships exist in television; stations in the same city will usually be affiliated with different television networks (often one with a major network and the other with a secondary network), and may occasionally shift television programs between each other when local events require one station to interrupt its network feed. Sister stations in separate (but often nearby) cities owned by the same company may or may not share a network affiliation. For example, WNYW and WWOR-TV, in New York City and Secaucus, New Jersey, are both owned by Fox Corporation. WNYW is a Fox owned-and-operated station; WWOR-TV is a MyNetworkTV ow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
