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KEWB (radio)
KKSF (910 kHz) is a commercial AM radio station licensed to Oakland, California and serving the San Francisco Bay Area. The station is owned by iHeartMedia and has an all-news radio format, with programming from the co-owned Black Information Network (BIN). The studios are located on Townsend Street in San Francisco's SoMa district. The station's transmitter and two-tower array are located on Point Isabel in Richmond, on the San Francisco Bay. KDIA utilizes one of KKSF's two towers during the day. KKSF transmits with 20,000 watts during the day and 5,000 watts at night, using a directional antenna at all times. Because radio waves travel farther at night, KKSF must reduce its power after sunset to protect other stations on AM 910 from interference. History KLX KKSF was founded by the ''Oakland Tribune'' newspaper. Starting in early 1922, the Tribune supplied content for Preston D. Allen's station, KZM, located on top of the Oakland Hotel. Following a suggestion by A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oakland, California
Oakland is a city in the East Bay region of the San Francisco Bay Area in the U.S. state of California. It is the county seat and most populous city in Alameda County, California, Alameda County, with a population of 440,646 in 2020. A major West Coast of the United States, West Coast port, Oakland is the most populous city in the East Bay, the third most populous city in the Bay Area, and the eighth most populous city in California. It serves as the Bay Area's trade center: the Port of Oakland is the busiest port in Northern California, and the fifth- or sixth-busiest in the United States. A charter city, Oakland was municipal corporation, incorporated on May 4, 1852, in the wake of the state's increasing population due to the California gold rush. Oakland's territory covers what was once a mosaic of California coastal prairie, California coastal terrace prairie, oak woodland, and north coastal scrub. In the late 18th century, it became part of a large ''rancho'' grant in the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City Of License
In U.S., 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 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, 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 shall make such distribution of licenses, frequenci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
910 AM
The following radio stations broadcast on AM frequency 910 kHz: 910 AM is a regional broadcast frequency. See also 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 .... Argentina * LR5 La Red in Buenos Aires * LRA23 in San Juan Canada * CKDQ in Drumheller, Alberta - 50 kW, transmitter located at Costa Rica * TIUM at San Jose Mexico * XEAO-AM in Mexicali, Baja California United States References {{DEFAULTSORT:910 Am Lists of radio stations by frequency ... [...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] |
KDIA
KDIA (1640 kHz) is a commercial radio, commercial AM broadcasting, AM radio station city of license, licensed to Vallejo, California, and serving the San Francisco Bay Area. It is owned by the Salem Media Group and broadcasts a Christian talk and teaching radio format. Salem also owns KFAX, which airs a separate schedule of Christian programming. The radio studios and offices are on Liberty Street in Fremont, California, Fremont. KDIA transmits 10,000 watts. By day, it is omnidirectional antenna, non-directional, using one of the KKSF towers in Richmond, California, Richmond on San Francisco Bay. At night, it is directional antenna, directional, using a four-tower array on Noble Road in Vallejo. History KDIA is a separate entity from the station at KMKY (AM), 1310 AM that held the KDIA call letters for many years. The 1640 AM frequency was licensed as part of an extension of the AM band, and adopted the abandoned KDIA call letters. In 1979, a World Administrative Radio Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco Bay
San Francisco Bay (Chochenyo language, Chochenyo: 'ommu) is a large tidal estuary in the United States, U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, California, San Francisco, San Jose, California, San Jose, and Oakland, California, Oakland. The San Francisco Bay drains water from approximately 40 percent of California. Water from the Sacramento River, Sacramento and San Joaquin River, San Joaquin rivers, and from the Sierra Nevada mountains, flow into Suisun Bay, which then travels through the Carquinez Strait to meet with the Napa River at the entrance to San Pablo Bay, which connects at its south end to San Francisco Bay. It then connects to the Pacific Ocean via the Golden Gate strait. However, this entire group of interconnected bays is often called the ''San Francisco Bay''. The bay was designated a Ramsar Convention, Ramsar Wetland of International Importance on February 2, 2013, and the Port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richmond, California
Richmond is a city in western Contra Costa County, California, United States. The city was municipal corporation, incorporated on August 3, 1905, and has a Richmond, California, City Council, city council.East Shore and Suburban Railway Chronology , ''El Cerrito Historical Society'', June 2007. Retrieved August 15, 2007. Located in the San Francisco Bay Area's East Bay region, Richmond borders San Pablo, California, San Pablo, Albany, California, Albany, El Cerrito, California, El Cerrito and Pinole, California, Pinole in addition to the Unincorporated area#United States, unincorporated communities of North Richmond, California, North Richmond, Hasford Heights, Kensington, California, Kensington, El Sobrante, Contra Costa County, California, El Sobrante, Bayview-Montalvin Manor, Tara Hills, Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Isabel (promontory)
Point Isabel is a promontory on the eastern shore of San Francisco Bay in the Richmond Annex neighborhood of Richmond, United States.Topographic map TopoQuest, retrieved July 5, 2008 History 
Point Isabel is a hilltop in the ancient range of hills that also includes Albany Hill, Brooks Island, and the Potrero San Pablo. Rising sea levels following the last Ice Age formed San Francisco Bay and left the point as a rocky promontory joined to the mainland by a salt ...
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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] |
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] |
South Of Market, San Francisco
South of Market (SoMa) is a neighborhood in San Francisco, California, so named due to its location south of Market Street (San Francisco), Market Street. It contains several sub-neighborhoods including South Beach (San Francisco), South Beach, Yerba Buena, and Rincon Hill. SoMa is home to many of the city's museums, to the headquarters of several major software and Internet companies, and to the Moscone Center, Moscone Conference Center. Name and location The area's boundaries are Market Street (San Francisco), Market Street to the northwest, San Francisco Bay to the northeast, Mission Creek to the southeast, and Division Street, 13th Street and U.S. Route 101 (California), U.S. Route 101 (Central Freeway) to the southwest. It is the part of the city in which the street grid runs parallel and perpendicular to Market Street. The neighborhood includes many smaller sub-neighborhoods such as: South Park, San Francisco, South Park, Neighborhoods in San Francisco#Yerba Buena, Yerba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco
San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of 2024, San Francisco is the List of California cities by population, fourth-most populous city in the U.S. state of California and the List of United States cities by population, 17th-most populous in the United States. San Francisco has a land area of at the upper end of the San Francisco Peninsula and is the County statistics of the United States, fifth-most densely populated U.S. county. Among U.S. cities proper with over 250,000 residents, San Francisco is ranked first by per capita income and sixth by aggregate income as of 2023. San Francisco anchors the Metropolitan statistical area#United States, 13th-most populous metropolitan statistical area in the U.S., with almost 4.6 million residents in 2023. The larger San Francisco Bay Area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
