Call signs in North America

The British West Indies (BWI) were colonised British territories in the West Indies: Anguilla, the Cayman Islands, Turks and Caicos Islands, Montserrat, the British Virgin Islands, Antigua and Barbuda, The Bahamas, Barbados, Dominica, Grenada, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, British Guiana and Trinidad and Tobago. Other territories include Bermuda, and the former British Honduras. The colonies were also at the centre of the transatlantic slave trade, around 2.3 million slaves were brought to the British Caribbean. Before the decolonisation period in the later 1950s and 1960s the term was used to include all British colonies in the region as part of the British Empire. Following the independence of most of the territories from the United Kingdom, the term Commonwealth Caribbean is now used.

Anguilla is a British Overseas Territory in the Caribbean. It is one of the most northerly of the Leeward Islands in the Lesser Antilles, lying east of Puerto Rico and the Virgin Islands and directly north of Saint Martin. The territory consists of the main island of Anguilla, approximately 16 miles long by 3 miles (5 km) wide at its widest point, together with a number of much smaller islands and cays with no permanent population. The territory's capital is The Valley. The total land area of the territory is 35 square miles (91 km2), with a population of approximately 15,753 (2021).

Antigua and Barbuda is a sovereign island country in the West Indies. It lies at the conjuncture of the Caribbean Sea and the Atlantic Ocean in the Leeward Islands part of the Lesser Antilles, at 17.060816°N latitude and -61.796429°W.

Barbados is an island country in the Lesser Antilles of the West Indies, in the Caribbean region of the Americas, and the most easterly of the Caribbean Islands. It occupies an area of 432 km2 (167 sq mi) and has a population of about 287,000. Its capital and largest city is Bridgetown.

Bermuda is a British Overseas Territory in the North Atlantic Ocean. The Bermuda archipelago consists of 181 islands with a total land area of 54 km2 (21 sq mi). The closest land outside the territory is in the US state of North Carolina, approximately 1,035 km (643 mi) to the northwest.

The British Virgin Islands (BVI), officially the Virgin Islands, are a British Overseas Territory in the Caribbean, to the east of Puerto Rico and the US Virgin Islands and north-west of Anguilla. The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser Antilles and part of the West Indies.

The Cayman Islands is a self-governing British Overseas Territory, and the largest by population. The 264-square-kilometre (102-square-mile) territory comprises the three islands of Grand Cayman, Cayman Brac and Little Cayman, which are located to the south of Cuba and northeast of Honduras, between Jamaica and Mexico's Yucatán Peninsula. The capital city is George Town on Grand Cayman, which is the most populous of the three islands.

Grand Cayman is the largest of the three Cayman Islands and the location of the territory's capital, George Town. In relation to the other two Cayman Islands, it is approximately 75 miles (121 km) southwest of Little Cayman and 90 miles (145 km) southwest of Cayman Brac.

Cayman Brac is an island that is part of the Cayman Islands. It lies in the Caribbean Sea about 145 km (90 mi) north-east of Grand Cayman and 8 km (5.0 mi) east of Little Cayman. It is about 19 km (12 mi) long, with an average width of 2 km (1.2 mi). Its terrain is the most prominent of the three Cayman Islands due to "The Bluff", a limestone outcrop that rises steadily along the length of the island up to 43 m (141 ft) above sea level at the eastern end. The island is named after this prominent feature, as "brac" is a Gaelic name for a bluff.

Dominica, officially the Commonwealth of Dominica, is an island country in the Caribbean. The capital, Roseau, is located on the western side of the island. It is geographically situated as part of the Windward Islands chain in the Lesser Antilles archipelago in the Caribbean Sea. Dominica's closest neighbours are two constituent territories of the European Union, the overseas departments of France, Guadeloupe to the northwest and Martinique to the south-southeast. Dominica comprises a land area of 750 km2 (290 sq mi), and the highest point is Morne Diablotins, at 1,447 m (4,747 ft) in elevation. The population was 71,293 at the 2011 census.

Grenada is an island country in the West Indies in the Caribbean Sea at the southern end of the Grenadines island chain. Grenada consists of the island of Grenada itself, two smaller islands, Carriacou and Petite Martinique, and several small islands which lie to the north of the main island and are a part of the Grenadines. It is located northwest of Trinidad and Tobago, northeast of Venezuela and southwest of Saint Vincent and the Grenadines. Its size is 348.5 square kilometres (134.6 sq mi), and it had an estimated population of 124,523 in July 2021. Its capital is St. George's. Grenada is also known as the "Island of Spice" due to its production of nutmeg and mace crops.

Guadeloupe is an archipelago and overseas department and region of France in the Caribbean. It consists of four inhabited islands—Basse-Terre, Grande-Terre, Marie-Galante, La Désirade, and the two inhabited Îles des Saintes—as well as many uninhabited islands and outcroppings. It is south of Antigua and Barbuda and Montserrat, north of the Commonwealth of Dominica. The region's capital city is Basse-Terre, located on the southern west coast of Basse-Terre Island; however, the most populous city is Les Abymes and the main centre of business is neighbouring Pointe-à-Pitre, both located on Grande-Terre Island. It had a population of 384,239 in 2019.

Chile, officially the Republic of Chile, is a country located in western South America. It is the southernmost country in the world and closest to Antarctica, stretching along a narrow strip of land between the Andes Mountains and the Pacific Ocean. With an area of 756,096 square kilometers (291,930 sq mi) and a population of 17.5 million as of 2017, Chile shares borders with Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage to the south. The country also controls several Pacific islands, including Juan Fernández, Isla Salas y Gómez, Desventuradas, and Easter Island, and claims about 1,250,000 square kilometers (480,000 sq mi) of Antarctica as the Chilean Antarctic Territory. The capital and largest city of Chile is Santiago, and the national language is Spanish.

The Canadian Broadcasting Corporation, branded as CBC/Radio-Canada, is the Canadian public broadcaster for both radio and television. It is a federal Crown corporation that receives public funding from the government. The English- and French-language service units of the corporation are commonly known as CBC and Radio-Canada, respectively.

St. John's is the capital and largest city of the Canadian province of Newfoundland and Labrador, located on the eastern tip of the Avalon Peninsula on the island of Newfoundland.

Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. The term "amateur" is used to specify "a duly authorized person interested in radioelectric practice with a purely personal aim and without pecuniary interest;" and to differentiate it from commercial broadcasting, public safety, or professional two-way radio services.

FM broadcasting is the method of radio broadcasting that uses frequency modulation (FM). Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit high-fidelity sound over broadcast radio. FM broadcasting offers higher fidelity—more accurate reproduction of the original program sound—than other broadcasting techniques, such as AM broadcasting. It is also less susceptible to common forms of interference, having less static and popping sounds than are often heard on AM. Therefore, FM is used for most broadcasts of music and general audio. FM radio stations use the very high frequency range of radio frequencies.

In radio, longwave, long wave or long-wave, and commonly abbreviated LW, refers to parts of the radio spectrum with wavelengths longer than what was originally called the medium-wave broadcasting band. The term is historic, dating from the early 20th century, when the radio spectrum was considered to consist of longwave (LW), medium-wave (MW), and short-wave (SW) radio bands. Most modern radio systems and devices use wavelengths which would then have been considered 'ultra-short'.

XEW-AM is a radio station in Mexico City, Mexico, broadcasting on the AM frequency of 900 kHz; it is branded as W Radio. XEW-AM serves as the originating station for other "W Radio" stations around Mexico that carry some of its programs. The programming on XEW-AM is also simulcast on Mexico City FM radio station 96.9 XEW-FM.

Querétaro, officially the Free and Sovereign State of Querétaro, is one of the 32 federal entities of Mexico. It is divided into 18 municipalities. Its capital city is Santiago de Querétaro. It is located in north-central Mexico, in a region known as Bajío. It is bordered by the states of San Luis Potosí to the north, Guanajuato to the west, Hidalgo to the east, México to the southeast and Michoacán to the southwest.

Celaya is a city and its surrounding municipality in the state of Guanajuato, Mexico, located in the southeast quadrant of the state. It is the third most populous city in the state, with a 2005 census population of 310,413. The municipality for which the city serves as municipal seat, had a population of 415,869. The city is located in the geographic center of the municipality, which has an areal extent of 553.18 km2 and includes many smaller outlying communities, the largest of which are San Miguel Octopan, Rincón de Tamayo and San Juan de la Vega.

Guanajuato, officially the Free and Sovereign State of Guanajuato, is one of the 32 states that make up the Federal Entities of Mexico. It is divided into 46 municipalities and its capital city is Guanajuato.

Pittsburgh is a city in the Commonwealth of Pennsylvania and the county seat of Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the second-most populous city in Pennsylvania after Philadelphia, and the 68th largest city in the U.S. with a population of 302,971 as of the 2020 census. The city anchors the Greater Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia.

Pennsylvania, officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. Pennsylvania borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio to its west, Lake Erie and the Canadian province of Ontario to its northwest, New York state to its north, and the Delaware River and New Jersey to its east.

KDKA is a Class A, clear channel, AM radio station, owned and operated by Audacy, Inc. and licensed to Pittsburgh, Pennsylvania, United States. Its radio studios are located at the combined Audacy Pittsburgh facility in the Foster Plaza on Holiday Drive in Green Tree, and its transmitter site is at Allison Park. The station's programming is also carried over 93.7 KDKA-FM's HD2 digital subchannel, and is simulcast on FM translator W261AX at 100.1 MHz.

Charles David "Doc" Herrold was an American inventor and pioneer radio broadcaster, who began experimenting with audio radio transmissions in 1909. Beginning in 1912 he apparently became the first person to make entertainment broadcasts on a regular schedule, from his station in San Jose, California.

San Jose, officially the City of San José, is a major city in the U.S. state of California, the cultural, financial, and political center of Silicon Valley, and largest city in Northern California by both population and area. With a 2020 population of 1,013,240, it is the most populous city in both the Bay Area and the San Jose–San Francisco–Oakland Combined Statistical Area, which has a 2015 population of 7.7 million and 9.7 million people respectively, the third most populous city in California, and the tenth-most populous in the United States. Located in the center of the Santa Clara Valley on the southern shore of San Francisco Bay, San Jose covers an area of 179.97 sq mi (466.1 km2). San Jose is the county seat of Santa Clara County and the main component of the San Jose–Sunnyvale–Santa Clara Metropolitan Statistical Area, with an estimated population of around two million residents in 2018.

KCBS is an all-news AM radio station located in San Francisco, California. It is owned by Audacy, Inc., which took over after its merger with CBS Radio.

The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for 2,340 miles (3,770 km) to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is 1,151,000 sq mi (2,980,000 km2), of which only about one percent is in Canada. The Mississippi ranks as the thirteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.