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Encyclopedia > North American call sign

Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The North American 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 Telecommunications Union. For example, the United States has been assigned the following prefixes: AAA-ALZ, K, N, W. For a complete list, see International Callsign Allocations. Call sign can refer to different types of call signs: Airline call sign Aviator call sign Cosmonaut call sign Radio and television call signs Tactical call sign, also known as a tactical designator See also: International Callsign Allocations, Maritime Mobile Service Identity This is a disambiguation page — a navigational aid... World map showing location of North America A satellite composite image of North America North America is a continent in the northern hemisphere, bounded on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the south by the Caribbean Sea, and on the west... Call sign can refer to different types of call signs: Airline call sign Aviator call sign Cosmonaut call sign Radio and television call signs Tactical call sign, also known as a tactical designator See also: International Callsign Allocations, Maritime Mobile Service Identity This is a disambiguation page — a navigational aid... The International Telecommunication Union (ITU) is an international organization established to standardize and regulate international radio and telecommunications. ... The ITU allocates callsign prefixes for radio and television stations. ...

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Canada

Canadian broadcast stations are assigned a three-, four-, or five-letter callsign beginning with CF, CH, CI, CJ, CK, VF, VO, or VX. Several other codes are available, but are not currently in use. Stations of the Canadian Broadcasting Corporation or Société Radio-Canada tend to identify themselves as "CBC Radio One/Two" (English-language AM/FM) or "La Première Chaîne/Espace Musique" (French-language AM/FM) of a city, although they do have official three- and four- letter callsigns. These generally (but not always) begin with CB by arrangement between the Canadian and Chilean authorities. Canadian stations broadcasting English-language programming are in addition required to play the Canadian national anthem every day at midnight local time. The Canadian Broadcasting Corporation, commonly known by the abbreviation CBC, is Canadas government-owned radio and television broadcaster. ... The Canadian Broadcasting Corporation, commonly known by the abbreviation CBC, is Canadas government-owned radio and television service. ... The English language is a West Germanic language that originates in England. ... A national anthem is a generally patriotic musical composition that is formally recognized by a countrys government as their states official national song. ...


Callsigns with four digits preceded by VF (for radio) or CH (for television) are only assigned to very-low-power local rebroadcasters; VO callsigns may only be used commercially by stations in Newfoundland and Labrador which were licensed before that province joined Canadian Confederation in 1949 (VOCM, VOAR and VOWR broadcast from St. John's long before Confederation). Only one station, VOCM-FM, has been allowed to adopt a VO callsign after 1949; it was granted the VOCM calls because of its corporate association with the AM station. Motto: Quaerite Primum Regnum Dei (Seek ye first the kingdom of God) Other Canadian provinces and territories Capital St. ... Canadian Confederation, or the Confederation of Canada, was the process that ultimately brought together a union among the provinces, colonies and territories of British North America to form the Dominion of Canada, a dominion of the British Empire, which today is the federal nation state called Canada. ... 1949 is a common year starting on Saturday. ... VOCM (referred to by its broadcasters as Voice of the Common Man) is the callsign of a AM station in St. ... VOAR (Voice of Adventist Radio) is a Canadian radio station, which airs religious programming in St. ... VOWR (Voice of Wesley United Church Radio) is a Canadian radio station, which airs religious programming in St. ... VOCM-FM is a Canadian radio station broadcasting at 97. ...


All Canadian FM stations have a "-FM" suffix, except for low-power rebroadcasters which have seminumeric callsigns. Higher-power rebroadcasters are generally licensed under the callsign of the originating station, followed by a numeric suffix and, for FM rebroadcasters of an AM station, a "-FM" suffix; for example, CJBC-1-FM rebroadcasts CJBC (860 Toronto), whereas CJBC-FM-1 rebroadcasts CJBC-FM (90.3 Toronto). CJBC is the callsign of two Canadian radio stations, which broadcast the CBCs French language radio networks in Toronto, Ontario. ... CJBC is the callsign of two Canadian radio stations, which broadcast the CBCs French language radio networks in Toronto, Ontario. ...


Canadian broadcast stations are required to identify by callsign hourly, but not at any specific time, and this rule is even more rarely enforced than the U.S. rule (see below).


Canadian amateur radio stations generally begin with VE, although some use VA. The number following these letters indicates the province, going from 1 for Nova Scotia, VE2 (Québec), VE3/VA3 (Ontario) through VE7 for British Columbia and 8 for the Northwest Territories, with latecomer VE9 for New Brunswick (VE1 used to be for all three Maritime Provinces). VE0 is for maritime mobile. VY1 is used for the Yukon Territory, VY2 for Prince Edward Island, and VY0 for Nunavut. CY0 is used for Sable Island and CY9 for St. Paul Island. Special prefixes are often issued for stations operating at significant events. Mrs. ... Motto: Munit Haec et Altera Vincit (One defends and the other conquers) Other Canadian provinces and territories Capital Halifax Largest city Halifax Lieutenant Governor Myra Freeman Premier John Hamm (PC) Area 55,283 km² (12th) Land 53,338 km² Water 1,946 km² (3. ... Motto: Ut Incepit Fidelis Sic Permanet (Loyal she began, loyal she remains) Other Canadian provinces and territories Capital Toronto Largest city Toronto Lieutenant Governor James K. Bartleman Premier Dalton McGuinty (Liberal) Area 1,076,395 km² (4th) Land 917,741 km² Water 158,654 km² (14. ... Motto: Splendor Sine Occasu (Splendour without diminishment) Other Canadian provinces and territories Capital Victoria Largest city Vancouver Lieutenant Governor Iona Campagnolo Premier Gordon Campbell (BC Liberal) Area 944,735 km² (5th) Land 925,186 km² Water 19,549 km² (2. ... Motto: None Other Canadian provinces and territories Capital Yellowknife Largest city Yellowknife Commissioner Tony Whitford Premier Joe Handley (Consensus government - no party affiliations) Area 1,346,106 km² (3rd) Land 1,183,085 km² Water 163,021 km² (12. ... Motto: Spem reduxit (Hope was restored) Other Canadian provinces and territories Capital Fredericton Largest city Saint John Lieutenant Governor Herménégilde Chiasson Premier Bernard Lord (PC) Area 72 908 km² (8th) Land 71 450 km² Water 1 458 km² (2. ... Motto: none Other Canadian provinces and territories Capital Whitehorse Largest city Whitehorse Commissioner Jack Cable Premier Dennis Fentie (Yukon Party) Area 482,443 km² (9th)  - Land 474,391 km²  - Water 8,052 km² (1. ... Motto: Parva Sub Ingenti (The small under the protection of the great) Other Canadian provinces and territories Capital Charlottetown Largest city Charlottetown Lieutenant Governor J. Léonce Bernard Premier Pat Binns (PC) Area 5,660 km² (13th) Land 5,660 km² Water 0 km² (0%) Population (2004) Population 137,900... Motto: Nunavut Sannginivut (Inuktitut, Nunavut our strength / Our land our strength) Other Canadian provinces and territories Capital Iqaluit Largest city Iqaluit Commissioner Ann Meekitjuk Hanson Premier Paul Okalik (independent) Area 2,093,190 km² (1st) Land 1,936,113 km² Water 157,077 km² (7. ... Sable Island is situated 180 km southeast of Nova Scotia, Canada in the Atlantic Ocean. ... St. ...


The Dominion of Newfoundland prefix VO remains in active use by radioamateurs in the province of Newfoundland and Labrador, V01AA atop Signal Hill in St. Johns being the most famous amateur station. A popular backronym for VO stations is "Voice Of...", although this is not the VO prefix's official meaning. Motto: Quaerite Primum Regnum Dei (Seek ye first the kingdom of God) Other Canadian provinces and territories Capital St. ... Motto: Quaerite Primum Regnum Dei (Seek ye first the kingdom of God) Other Canadian provinces and territories Capital St. ... The Canadian city of St. ... A backronym or bacronym is a reversed acronym. ...


Mexico

Mexican broadcast stations are assigned a three-, four-, five-, or six-letter callsign beginning with XE (mediumwave) or XH (all others). Some FM and TV stations are grandfathered with XE callsigns and a "-FM" or "-TV" suffix. Mexican stations are required to identify twice an hour, at both the top and the bottom. Mexican stations broadcasting English-language programming are in addition required to play the Mexican national anthem every day at midnight local time. As in Canada, stations that rebroadcast other stations have the same callsign, but with a different number at the end (such as XEMN and XEMN-1). Mediumwave radio transmissions (sometimes called Medium frequency or MF) are those between the frequencies of 300 kHz and 3000 kHz. ... The English language is a West Germanic language that originates in England. ... A national anthem is a generally patriotic musical composition that is formally recognized by a countrys government as their states official national song. ...


Amateur radio stations in Mexico use XE1 for the central region, XE2 for the northern, and XE3 for the southern. XF prefixes indicate islands. Special callsigns for contests or celebrations are occasionally issued. Mrs. ...


United States

In the United States, broadcast stations have call signs between three and six characters in length, though the minimum length for new stations is four letters. An additional suffix may also be added, indicating a specific broadcast sevice type. Full-power stations receive four-letter call signs, while broadcast translators and LPTV stations usually receive call signs with five or six characters, including two or three numbers. Generally, call signs begin with "K" west of the Mississippi River, and "W" to the east. American stations broadcasting English-language programming are in addition required to play the American national anthem every day at midnight local time. In broadcasting, a translator is an FM radio station or a TV station which acts as a full-duplex repeater. ... Low-power broadcasting is the concept of broadcasting at very low power and low cost, to a small community area. ... Length 6,270 km Elevation of the source 450 m Average discharge Saint Louis¹: 5,500 m³/s Vicksburg²: 16,800 m³/s Baton Rouge³: 12,800 m³/s Area watershed 2,980,000 km² Origin  Lake Itasca Mouth  Gulf of Mexico Basin countries United States (98. ... The English language is a West Germanic language that originates in England. ... A national anthem is a generally patriotic musical composition that is formally recognized by a countrys government as their states official national song. ...


Short call signs

In the 1920s, many stations were assigned three-letter call signs; these have been grandfathered into the current system, even though many such stations have changed owners. Such stations include KOA in Denver, Colorado, WGN in Chicago, Illinois, and WRR in Dallas, Texas. (WRR is an unusual case in that the call sign was moved from the original AM station to a commonly owned FM station, formerly WRR-FM, before the AM was sold.) The Federal Communications Commission for many years maintained a policy of "drop it and lose it forever" with respect to three-letter call signs, but recently allowed KKHJ (930 Los Angeles) to regain its historic three-letter call, KHJ. Sometimes referred to as the Jazz Age or primarily in North America as the Roaring Twenties. // Events and trends Technology John T. Thompson invents Thompson submachine gun, also known as Tommy gun John Logie Baird invents the first working mechanical television system (1925) Charles Lindbergh becomes the first person to... This is a list of three-letter broadcast callsigns in the United States. ... A grandfather clause is an exception, originating from the United States, that allows a pre-existing rule to remain as it is despite a change in the rules applied to newer situations. ... KOA (850 AM, 850 KOA) is a clear-channel news/talk radio station serving Denver, Colorado. ... Denver skyline, 1999. ... WGN is the callsign of two broadcast stations in Chicago, Illinois, both owned by the Tribune company. ... Chicago, colloquially known as the Second City and the Windy City, is the third-largest city in population in the United States and the largest inland city in the country. ... WRR (101. ... Downtown Dallas City nickname: Big D Location Location in the state of Texas Government Counties Dallas County Collin County Denton County Kaufman County Rockwall County Mayor Laura Miller Physical characteristics Area      Land      Water 385. ... The FCCs official seal. ... The City of Los Angeles (from Spanish Los Ángeles , meaning the angels), also known as L.A., is the second-largest city in the United States in terms of population, as well as one of the worlds most important economic, cultural, and entertainment centers. ... KHJ can refer to multiple things: KHJ-AM, US radio station Airport code for Kauhajoki Airport in Finland This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...


The FCC allows FM and TV stations under common ownership with a three-letter AM or FM in the same market to use five-letter (three plus "-FM" or "-TV" suffix) callsigns; for example, KGO-TV in San Francisco or WMC-FM in Memphis. In some cases, such as WIL-FM in St. Louis, the five-letter callsign may outlive the three-letter callsign on which it is based. There is also the unusual case of Baltimore's WJZ-TV, which was allowed to adopt the callsign despite the fact that there was no longer a WJZ radio; when there was, it wasn't in Baltimore; and it hadn't been owned by the same company since the 1920s. KGO-TV (channel 7), commonly known on the air as ABC7, Channel 7 or ABC San Francisco, is an owned and operated television station of the ABC television network. ... This page is a candidate for speedy deletion. ... WMC (99. ... Memphis is a city in Shelby County, Tennessee, of which it is the county seat. ... WIL-FM General Information FM radio station in St. ... The Gateway Arch, shown here behind the Old Courthouse, is the most recognizable part of the St. ... Baltimore skyline at night Motto: BELIEVE (formerly The City That Reads) Nickname: Charm City Mob Town Location in Maryland Founded  -Incorporated 30 July 1729 1797  County Independent city Mayor Martin J. OMalley (Dem) Area  - Total  - Water 349. ... WJZ-TV is a CBS-owned and operated television station in Baltimore, Maryland. ... Sometimes referred to as the Jazz Age or primarily in North America as the Roaring Twenties. // Events and trends Technology John T. Thompson invents Thompson submachine gun, also known as Tommy gun John Logie Baird invents the first working mechanical television system (1925) Charles Lindbergh becomes the first person to...


Extremely early call signs used in the 1910s and into the early 1920s were arbitrary. The U.S. government began requiring stations to use three-letter call signs around 1912, but they could be chosen at random. KDKA initially broadcast as 8XK before gaining its well-known letters in 1920. The Rosicrucian Order, AMORC of San Jose, California used the call sign 6KZ. // Events and trends Technology Gideon Sundback patents the first modern zipper Harry Brearley invents stainless steel Charles P. Strite invents first pop-up bread toaster Science Einsteins theory of general relativity Max von Laue discovers the diffraction of x-rays by crystals Alfred Wegener puts forward his theory of... 1912 is a leap year starting on Monday. ... KDKA is the callsign of two broadcast stations in Pittsburgh, Pennsylvania, USA: KDKA AM 1020, the first commercial station in the U.S. KDKA-TV, channel 2 (DTV 25) KDKA-FM 92. ... 1920 is a leap year starting on Thursday (link will take you to calendar) // Events January January 7 - Forces of Russian White admiral Kolchak surrender in Krasnoyarsk. ... The Rosicrucian Order, Ancient Mystical Order Rosæ Crucis (AMORC) is a worldwide mystical, Rosicrucian, educational, humanitarian and fraternal organisation founded by Harve Spencer Lewis in 1915. ... City nickname: Capital of Silicon Valley Location Location of San Jose within Santa Clara County, California. ...


K and W

New stations are assigned a code beginning with "K," if they are west of the Mississippi River, and beginning with "W" if they are east of the river. Again, some early stations have been grandfathered in, so there are four broadcasters with a K prefix east of the Mississippi, and a few dozen with a W on the west side. (There are more grandfathered "W" stations because the dividing line used to be one state farther west.) Some examples would be KDKA in Pittsburgh, Pennsylvania, KYW in Philadelphia, and WDAY in Fargo, North Dakota. Stations located near the Mississippi River may have either letter, depending on the precise location of their community of license and on historical contingencies. Metro areas with mixed W- and K- stations because of proximity to the river include Minneapolis-St. Paul, Memphis, St. Louis, New Orleans, and the Quad Cities. Length 6,270 km Elevation of the source 450 m Average discharge Saint Louis¹: 5,500 m³/s Vicksburg²: 16,800 m³/s Baton Rouge³: 12,800 m³/s Area watershed 2,980,000 km² Origin  Lake Itasca Mouth  Gulf of Mexico Basin countries United States (98. ... In the United States, a grandfather clause is an exception which allows something pre-existing to remain as it is, despite a change to the contrary in the rules applied to newer situations. ... KDKA is the callsign of two broadcast stations in Pittsburgh, Pennsylvania, USA: KDKA AM 1020, the first commercial station in the U.S. KDKA-TV, channel 2 (DTV 25) KDKA-FM 92. ... (This article is about the city. ... KYW is the callsign of two broadcast stations in Philadelphia: KYW (AM), broadcasting at 1060 kHz on radio. ... Philadelphia is a village located in Jefferson County, New York. ... WDAY is a television station based in Fargo, North Dakota. ... Fargo is a United States city located in the state of North Dakota. ... A metropolitan area is a large population center consisting of a large city and its adjacent zone of influence, or of several neighboring cities or towns and adjoining areas, with one or more large cities serving as its hub or hubs. ... The Twin Cities of Minneapolis and St. ... Memphis is a city in Shelby County, Tennessee, of which it is the county seat. ... The Gateway Arch, shown here behind the Old Courthouse, is the most recognizable part of the St. ... New Orleans is the largest city in the state of Louisiana, United States of America. ... The I-74 Bridge is located near the geographic center of the Quad Cities. ...


Notable significant exceptions to this rule are the time signal stations WWV and WWVH in Colorado and Hawaii, respectively. (WWV originally began in Maryland and was later moved west. However, even ignoring that fact, U.S. government-owned stations are overseen by the NTIA and not the FCC, and are thus not subject to the FCC's rules on call signs—most do not have call signs at all.) A radio clock A radio clock is a clock that is synchronized by a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock. ... WWV is the callsign of NISTs shortwave radio station located in Fort Collins, Colorado. ... WWVH is the callsign of NISTs shortwave radio time signal station in Kekaha, on the island of Kauai in the state of Hawaii. ... State nickname: The Centennial State Other U.S. States Capital Denver Largest city Denver Governor Bill Owens (R) Official languages English Area 269,837 km² (8th)  - Land 268,879 km²  - Water 962 km² (0. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle (R) Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ... State nickname: Old Line State; Free State Other U.S. States Capital Annapolis Largest city Baltimore Governor Robert L. Ehrlich (R) Official languages English Area 32,160 km² (42nd)  - Land 25,338 km²  - Water 6,968 km² (21%) Population (2000)  - Population 5,296,486 (19th)  - Density 165 /km² (5th) Admission... The government of the United States, established by the United States Constitution, is a federal republic of 50 states, a few territories and some protectorates. ... The National Telecommunications and Information Administration (NTIA) is an agency of the United States Department of Commerce that serves as the Presidents principal adviser on telecommunications policies pertaining to the United States economic and technological advancement and to regulation of the telecommunications industry. ...


The FCC allows derived callsigns in the same market as a commonly-owned AM or FM without respect of the boundary, so stations may establish common branding across bands and services. One famous example was the case of the former KWK in St. Louis, which after several petitions was permitted to change the callsign of its sister FM station in Granite City, Illinois, then WWWK(FM), to KWK-FM. Later, the AM would change its callsign and the FM became KWK(FM), thereby becoming an exemplar of both categories of grandfathered stations. Granite City is a city located in Madison County, Illinois. ...


Suffixes

FM radio and television call signs may be followed by a dash and the two-letter class of station: "-FM," "-LP," "-TV," or "-CA." For digital television, the "-HD" and later "-DT" suffixes are no longer officially used, as the digital channel is not licensed separately from the analogue. (Some radio owners using the iBiquity "HD Radio" IBOC system have expressed a desire for "-HD" call signs, but this is unlikely to happen because HD Radio is a subcarrier service on the same frequency.) Occasionally, an FM or TV station may have boosters, which are similar to translators but operate on the same channel. In this case, the main portion of the call sign remains the same (unlike translators), and the boosters are given sequential numeric suffixes like -FM1, -TV2, -3, and so forth. Digital television (DTV) uses digital modulation and compression to broadcast video, audio and data signals to television sets. ... iBiquity is a company formed by the merger of USA Digital Radio and Lucent Digital Radio, with the goal of creating an in-band on-channel (IBOC) digital radio system for the United States. ... In-band on-channel (IBOC) is a method of transmitting digital and analog radio broadcast signals simultaneously on the same frequency. ... A subcarrier is separate analog or digital signal carried on a main radio transmission, which carries extra information such as voice or data. ...


Low-power LPTV and LPFM stations share the -LP suffix. Those LPTV stations protected from interference by primary stations use the -CA suffix.


Translators

FM and TV translators, and many (but not all) low-power TV stations are assigned sequential call signs. They use an appropriate initial letter followed by a two- or three-digit channel number, and then a two-letter sequential suffix. For example, a TV translator on channel 4 might have the call sign K04AX (though it is much less common for TV translator channels to be between 2 and 13). The FM band also has channel numbers starting at the number 200 (or 201 for practical purposes), although they are almost unknown to regular listeners who usually tune in to a station based on its frequency. W201AA was the first FM translator at 88.1 MHz, for example. Such call signs are never reused by another station. In most of the world, the FM broadcast band, used for broadcasting FM radio stations, goes from 87. ...


New full-power stations are assigned sequential call signs if the permittee does not choose one of their own; these are always four letters, of which the third is the least-significant digit and the second is the most-significant digit of the sequence number. (Callsigns which were already assigned are skipped in the sequence.) Hence, many very early stations, like WMAQ Chicago (now WSCR) and WMAF Round Hill, South Dartmouth (now defunct) were assigned W-A- or K-A-) call signs. The MIT radio telescope at Round Hill Round Hill is a location in Dartmouth, Massachusetts of historical significance. ... Dartmouth is a town located in Bristol County, Massachusetts. ...


Station identification

Many stations prefer not to use call signs at all, since a slogan is more easily remembered by listeners (and those filling in diaries for the Arbitron radio ratings). However, in the U.S., the Federal Communications Commission does require periodic identification using the formal call sign, as close to the top of each hour as possible, at a "natural break in programming"; though this rule is rarely enforced. Radio stations are also required to identify their community of license. There are some unusual cases, though, such as the low-frequency WWVB time station. Because of the station's narrow signal, that station only broadcasts a one bit per second signal that cannot usually be understood by humans, so the station is identified by shifting the broadcast carrier wave's phase by 45° twice an hour (see PSK). Look up Slogan on Wiktionary, the free dictionary A slogan is a memorable phrase used in political or commercial context as a repetitive expression of an idea or purpose. ... Arbitron is a radio audience research company in the United States. ... The FCCs official seal. ... In the United States (and potentially elswhere), each radio station or TV station is assigned a city of license by the Federal Communications Commission that they must serve. While this has become far less meaningful over the decades, stations are still required to post their public file somewhere within the... Low Frequency or LF (sometimes called longwave) refers to Radio Frequencies (RF) in the range of 30-300 kHz. ... WWVB is a special NIST time signal radio station in Fort Collins, Colorado, co-located with WWV. WWVB is the station that radio-controlled clocks throughout North America use to synchronize themselves. ... A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day. ... In telecommunications and computing, bit rate (sometimes written bitrate) is the frequency at which bits are passing a given (physical or metaphorical) point. It is quantified using the bit per second (bit/s) unit. ... A carrier wave is a waveform (usually sinusoidal) that is modulated (modified) to represent the information to be transmitted. ... PSK can relate to: phase-shift keying a telecommuncations term, or; Pre-Shared Key as a method to set encryption keys in Wi-Fi Protected Access, a wireless security scheme. ...


It is fairly common for stations to choose a call sign that can be transformed into a name, such as Boston's WXKS-FM (107.9 Medford), one of many Clear Channel Communications-owned stations that call themselves "KISS." In other instances, the letters may be an initialism for a name or slogan. Some of the most famous of these include WGN, owned by the Chicago Tribune, which stands for "World's Greatest Newspaper," and WLS, then owned by Sears Roebuck, the "World's Largest Store." City nickname: Beantown, The Hub (of the Universe), Athens of America Location Location in Massachusetts Government Counties Suffolk County Mayor Thomas Menino (Dem) Physical characteristics Area      Land      Water 89. ... This article is about the company. ... The Chicago Tribune, formerly self-styled as the Worlds Greatest Newspaper, remains the leading daily newspaper of the Midwestern United States. ... WLS (Worlds Largest Store) is the callsign two broadcast stations in Chicago: radio station WLS AM 890 TV station WLS-TV 7 (DTV 52) WLS (Weight Loss Surgery) see Roux-en-Y gastric bypass surgery   This is a disambiguation page — a navigational aid which lists other pages that might... Sears, Roebuck and Company (NYSE: S) was founded in Chicago, Illinois as a catalog merchandiser in 1886 by Richard Sears and Alvah Roebuck. ...


Experimental, amateur, and non-broadcast stations

United States amateur radio callsigns are issued with one or two letters, followed by a single digit, and then one to three more letters. Generally the shorter the call (up to a 1x2 or 2x1 format) the higher the grade of license, but an amateur who upgrades is not required to change his or her callsign. In any case some of the available blocks have been used up. The 1x1 callsigns, such as K6O, are for short-term special event stations. Outlying areas have special calls. For example, those issued in Hawaii can (like other U.S. callsigns) start with A, K, N, or W, but then will have "H6" before the 1–3 additional letters. Other Pacific possessions use other "H" numbers; a Guam station could be KH0. Alaska has "L" as the second prefix letter, and Caribbean stations use "P." Mrs. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle (R) Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ... State nickname: The Last Frontier, The Land of the Midnight Sun Other U.S. States Capital Juneau Largest city Anchorage Governor Frank Murkowski (R) Official languages English Area 1,067,653 mi² / 1,717,854 km² (1st)  - Land 1,481,347 km²  - Water 236,507 km² (13. ...


The number in the call refers to one of the 10 radio districts into which the U.S. is divided, but that only indicates where the license was issued. Unlike many countries it is no longer necessary for a U.S. ham to change callsigns when moving to a new district. Most amateurs going to an exotic location will sign/(prefix) to show their location. Thus a station visiting American Samoa could be (regular call)/KH8. American amateurs are also permitted operate in Canada under their own callsigns with a location indicator.


Experimental stations use call signs out of the amateur radio sequence, with the letter following the region digit required to be an X. (All VHF stations before World War II were licensed as experimental stations.) Notable experimental stations included Major Armstrong's FM station W2XMN in Alpine, New Jersey; Powell Crosley's 500-kW superpower AM W8XO, operating nights only with WLW's programming and frequency from Mason, Ohio; and Don Lee's pioneering television station, W6XAO in Los Angeles. (Synchronous "booster" transmitters for AM stations are still considered experimental in the U.S., despite fifty years of experience in Europe, and new experimental call signs are being assigned for new licenses even now, by inserting a region digit and the letter X into the parent station's call sign.) Mrs. ... World War II was a truly global conflict with many facets: immense human suffering, fierce indoctrinations, and the use of new, extremely devastating weapons like the atom bomb World War II, also known as the Second World War, was a mid-20th-century conflict that engulfed much of the globe... Edwin Howard Armstrong Edwin Howard Armstrong (December 18, 1890 - March 31, 1954) was an American electrical engineer and inventor. ... Map highlighting Alpines location within Bergen County. ... Powel Crosley Jr. ... Logo for Cincinnatis 700 WLW WLW is a radio station located in Cincinnati, Ohio, run by Clear Channel Communications and is located at 700 AM. The station runs under the talk format and is the flagship station for The Truckin Bozo, a popular nationwide, overnight program especially for truckers. ... Mason is a city located in southwestern Warren County, Ohio. ... The City of Los Angeles (from Spanish Los Ángeles , meaning the angels), also known as L.A., is the second-largest city in the United States in terms of population, as well as one of the worlds most important economic, cultural, and entertainment centers. ...


Somewhat confusingly, the National Weather Service also uses similar-looking call signs for weatheradio stations, as does the ICAO airport code system. The National Weather Service (NWS) is one of the six scientific agencies that make up the National Oceanic and Atmospheric Administration (NOAA) of the United States government. ... Weatheradio is a special radio service available over much of North America that transmits weather warnings and forecasts 24 hours a day. ... The ICAO airport code is a four-letter alphanumeric code designating each airport around the world. ...


  Results from FactBites:
 
call letters: Definition and Much More from Answers.com (2982 words)
Call signs in aviation are derived from several different policies, depending on the type of flight operation being conducted, and depending on whether the caller is in an aircraft or at a ground facility.
Amateur radio call signs are in the international series and normally consist of a one- or two-character prefix, a number (which sometimes corresponds to a geographic area within the country), and a 1, 2, or 3 character suffix.
In the Italian call sign, IK1TZO, IK is the prefix, the number component is 1 and corresponds to the Piedmont, Aosta Valley and Liguria regions, and TZO is the suffix.
North American call sign - Wikipedia, the free encyclopedia (2736 words)
Generally, call signs begin with "K" west of the Mississippi River, and "W" to the east.
New full-power stations were formerly assigned sequential call signs if the permittee does not choose one of their own; these were always four letters, of which the third was the least-significant digit and the second was the most-significant digit of the sequence number.
FM radio and television call signs may be followed by a dash and the two-letter class of station: "-FM," "-LP," "-TV," or "-CA." For digital television, the "-HD" and later "-DT" suffixes are usually not used (one exception being KKYK-DT), as the digital channel is not usually licensed separately from the analogue.
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