Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW). There is no official definition of the band range, but it always includes all of the high frequency band (HF), which extends from 3 to 30 MHz ; above the medium frequency band (MF), to the bottom of the VHF band.
A numbers station is a shortwave radio station characterized by broadcasts of formatted numbers, which are believed to be addressed to intelligence officers operating in foreign countries. Most identified stations use speech synthesis to vocalize numbers, although digital modes such as phase-shift keying and frequency-shift keying, as well as Morse code transmissions, are not uncommon. Most stations have set time schedules, or schedule patterns; however, some appear to have no discernible pattern and broadcast at random times. Stations may have set frequencies in the high-frequency band.
Radio Televisión Martí is an American state-run radio and television international broadcaster based in Miami, Florida, financed by the federal government of the United States through the U.S. Agency for Global Media. It transmits propaganda in Spanish to Cuba and its broadcasts can also be heard and viewed worldwide through their website and on shortwave radio frequencies.
The Hellenic Broadcasting Corporation, commonly shortened to ERT, is the state-owned public radio and television broadcaster of Greece.
JJY is the call sign of a low frequency time signal radio station located in Japan.
Radio Canada International (RCI) is the international broadcasting service of the Canadian Broadcasting Corporation (CBC). Prior to 1970, RCI was known as the CBC International Service. The broadcasting service was also previously referred to as the Voice of Canada, broadcasting on shortwave from powerful transmitters in Sackville, New Brunswick. "In its heyday", said Radio World magazine, "Radio Canada International was one of the world's most listened-to international shortwave broadcasters". However, as the result of an 80 percent budget cut, shortwave services were terminated in June 2012, and RCI became accessible exclusively via the Internet. It also reduced its services to five languages and ended production of its own news service.
The American Forces Network (AFN) is a government television and radio broadcast service the U.S. military provides to those stationed or assigned overseas, and is headquartered at Fort Meade in Maryland. AFN comprises two subordinate overseas commands and one directorate in the continental United States. Overseas, AFN Europe is headquartered at Sembach Kaserne in Germany and consists of 15 subordinate stations in the countries of Bahrain, Belgium, Cuba, Germany, Greece, Italy, Spain, and Turkey. AFN Pacific is headquartered at Yokota Air Base in Japan and consists of nine stations in Diego Garcia, Japan, and South Korea. Stations under AFN Europe and AFN Pacific broadcast live local radio shows 12 hours a day Monday through Friday, with the exception of U.S. federal holidays. Stateside, AFN's broadcast operations, which include global radio and television satellite feeds, emanate from the AFN Broadcast Center/Defense Media Center at March Air Reserve Base in Riverside, California.
Radio Havana Cuba is the official government-run international broadcasting station of Cuba. It can be heard in many parts of the world, including the United States, on shortwave frequencies. Radio Havana Cuba, along with Radio Rebelde, Cubavision Television, and other Cuban radio and television, broadcasts to North, Central and South America via free-to-air programming from the Hispasat 30W-6 satellite over the Atlantic Ocean and worldwide via Internet streaming.
Family Radio is a non-profit Christian radio network based in Franklin, Tennessee with network operations located in Alameda, California, United States. Established in 1959, Family Radio airs Calvinist teaching and Christian music. The network is most widely known for its false 2011 end times predictions. At one time the 19th largest broadcaster in the United States, with 216 radio stations, the number of stations in the network has dropped drastically following their failed end times predictions.
Shortwave listening, or SWLing, is the hobby of listening to shortwave radio broadcasts located on frequencies between 1700 kHz and 30 MHz (30 000 kHz). Listeners range from casual users seeking international news and entertainment programming, to hobbyists immersed in the technical aspects of long-distance radio reception and sending and collecting official confirmations that document their reception of remote broadcasts (DXing). In some developing countries, shortwave listening enables remote communities to obtain regional programming traditionally provided by local medium wave AM broadcasters. In 2002, the number of households that were capable of shortwave listening was estimated to be in the hundreds of millions.
Shortwave broadcasting in the United States allows private ownership of commercial and non-commercial shortwave stations that are not relays of existing AM/MW or FM radio stations, as are common in Africa, Europe, Asia, Oceania except Australia and Latin America. In addition to private broadcasters, the United States also has government broadcasters and relay stations for international public broadcasters. Most privately owned shortwave stations have been religious broadcasters, either wholly owned and programmed by Roman Catholic and evangelical Protestant charities or offering brokered programming consisting primarily of religious broadcasters. To better reach other continents of the world, several stations are located in far-flung US territories. Shortwave stations in the US are not permitted to operate exclusively for a domestic audience; they are subject to antenna and power requirements to reach an international audience.
The Voice of America Bethany Relay Station. Located in Butler County, Ohio, about 25 miles north of Cincinnati, the facility was constructed by the U.S. government during World War II, to broadcast news and information to Europe and South America beginning in 1943. Once one of the world’s most powerful radio shortwave stations, it was decommissioned in 1994 and now operates as a non-profit museum.
WRMI is a shortwave radio station broadcasting from Okeechobee, Florida, United States. WRMI is a commercial radio station that sells airtime to businesses and organizations.
Radio Taiwan International is the English name and call sign of the Central Broadcasting System (CBS), national broadcaster and international radio service of Taiwan. It is a government-owned station that broadcasts in 14 languages around the world via the internet, shortwave and podcasts. It also has Facebook fan pages in five additional languages.
WNYW was a shortwave radio station that broadcast from Scituate, Massachusetts, in the United States. During WWII the station became important for the British and the Norwegian information services. On October 20, 1973, Family Stations, Inc., acquired the station to be part of its Family Radio network and changed the call letters to WYFR. Family Stations eventually progressively moved the transmitters to their current site in Okeechobee, Florida. The transmitter site in Scituate continued to operate until November 16, 1979, when it was switched off for the last time.
WWRB was a shortwave international broadcasting station known as both "World Wide Religious Broadcasting" and "World Wide Radio Broadcasting" broadcasting from Morrison, Tennessee. It was a subsidiary of Airline Transport Communications Incorporated. The station featured primarily Christian religious programming.
WTWW is a shortwave station located in Lebanon, Tennessee. It is officially licensed to Leap of Faith, Inc. As of December 2022, WTWW has one working transmitter, that on 5.085 MHz, which operates during the evening hours carrying Scriptures for America, a service produced by LaPorte Church of Christ.
