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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.
International broadcasting, in a limited extent, began during World War I, when German and British stations broadcast press communiqués using Morse code. With the severing of Germany's undersea cables, the wireless telegraph station in Nauen was the country's sole means of long-distance communication.
In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere. Since it is not limited by the curvature of the Earth, skywave propagation can be used to communicate beyond the horizon, at intercontinental distances. It is mostly used in the shortwave frequency bands.
WLW is a commercial news/talk radio station licensed to Cincinnati, Ohio. Owned by iHeartMedia, WLW is a clear-channel station, often identifying itself as “The Big One”. Its studios are located in Sycamore Township.
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.
HCJB, "The Voice of the Andes", was the first radio station with daily programming in Ecuador and the first Christian missionary radio station in the world. The station was founded in 1931 by Clarence W. Jones, Reuben Larson, and D. Stuart Clark. HCJB now focuses on Ecuador with unified programming on FM at 89.3 MHz in Pichincha, at 92.5 MHz in Manabí, at 96.1 MHz in Tungurahua and Cotopaxi, at 98.3 MHz in Esmeraldas and with separate programming on AM at 690 kHz. Broadcasts in Spanish and indigenous languages on 6.05 MHz (1 kW), continue on an intermittent basis with a new solid state transmitter which in 2017 replaced an older (5 kW) transmitter. These broadcasts were not listed on the HCJB English website as of February 2016.
WYFR was a shortwave radio station located in Okeechobee, Florida, United States. The station was owned by Family Stations, Inc., as part of the Family Radio network, and used to broadcast traditional Christian radio programming to international audiences. WYFR ceased all shortwave transmissions July 1, 2013. In December 2013, another shortwave broadcaster, WRMI of Miami, purchased the WYFR transmission complex.
CBU is a Canadian non-commercial public radio station, in Vancouver, British Columbia. It carries the programming of the CBC Radio One network. The station broadcasts on 690 AM and on 88.1 FM as CBU-2-FM. CBU's newscasts and local shows are also heard on a chain of CBC stations around the Lower Mainland.
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. The station’s hosts and programs have won many national and global broadcasting awards.
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.
Radio Ukraine International, abbreviated RUI, is the official international broadcasting station of Ukraine, with foreign language news and programming being produced by Ukrainian Radio's main editorial department for broadcasting in EBU languages. RUI broadcasts in Belarusian, Bulgarian, English, German, Hungarian, Polish, Romanian and Slovak. The Ukrainian language programming aired on RUI is produced by the domestic First Channel.
Shortwave relay stations are transmitter sites used by international broadcasters to extend their coverage to areas that cannot be reached easily from their home state. For example, the BBC operates an extensive net of relay stations.
CKCX was the call sign used for the Canadian Broadcasting Corporation's shortwave transmitter complex near Sackville, New Brunswick at the Tantramar Marshes. The Sackville Relay Station was operated by Radio Canada International and broadcast its programming around the world as well as relay transmissions from several foreign shortwave broadcasters. Domestically, it transmitted broadcasts on 9.625 MHz to northern Quebec by CBC North, the James Bay Cree Communications Society and Taqramiut Nipingat, the Inuit communications society of the Nunavik region of northern Quebec. The CKCX designation was assigned after CBC Radio's CBA, under whose licence the Sackville complex originally operated, moved to Moncton in 1968. Sackville was also used by Radio Japan, China Radio International, Voice of Vietnam, BBC World Service, Deutsche Welle and Radio Korea as part of a transmitter time exchange agreement.
WURN is a commercial AM radio station Miami, Florida. The station airs a Spanish news/talk radio format. WURN is owned by Actualidad Media Group.
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.
References
- ↑ Old English Schedule to the Americas Primetime Shortwave
- 1 2 Old Schedule WRMI official site
- ↑ Old WRMI Schedule for 9.955 MHz WRMI official site
- 1 2 "WRMI Station record 1996 to 2003". Federal Communications Commission . November 1996.
- 1 2 "WRMI – file IHF-RWL-20120627-00005". Federal Communications Commission. Retrieved 21 February 2016.
- ↑ Shortwave Radio Signal From Florida Cow Pasture Reaches Russia Carrying Latest News WFOR-TV, March 17, 2022
- ↑ Glenn Hauser log November 10-16, 2022
- ↑ Important announcement!!. The Mighty KBC Radio. Retrieved December 15, 2022.
- ↑ "International High Frequency – WYFR to WRMI". Federal Communications Commission. April 10, 2015.
- ↑ "WRMI B23 Schedule". wrmi.net. WRMI-Radio Miami International. Retrieved 26 November 2023.
