Shortwave listening
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Shortwave listening, or SWLing, is the
hobby A hobby is considered to be a regular activity that is done for enjoyment, typically during one's leisure time. Hobbies include collecting themed items and objects, engaging in creative and artistic pursuits, playing sports, or pursuing oth ...
of listening to
shortwave radio Shortwave radio is radio transmission using shortwave (SW) radio frequencies. There is no official definition of the band, but the range always includes all of the high frequency band (HF), which extends from 3 to 30 MHz (100 to 10 m ...
broadcasts located on
frequencies Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is e ...
between 1700 kHz and 30 MHz. Listeners range from casual users seeking international news and entertainment programming, to hobbyists immersed in the technical aspects of radio reception and collecting official confirmations (
QSL cards A QSL card is a written confirmation of either a two-way radiocommunication between two amateur radio or citizens band stations; a one-way reception of a signal from an AM radio, FM radio, television or shortwave broadcasting station; or the rece ...
) that document their reception of distant broadcasts ( DXing). In some developing countries, shortwave listening enables remote communities to obtain regional programming traditionally provided by local
medium wave Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the dayti ...
AM broadcasters. In 2002, the number of households that were capable of shortwave listening was estimated to be in the hundreds of millions. The practice of long-distance radio listening began in the 1920s when shortwave broadcasters were first established in the US and Europe. Audiences discovered that international programming was available on the shortwave bands of many consumer radio receivers, and a number of magazines and listener clubs catering to the practice arose as a result. Shortwave listening was especially popular during times of international conflict such as
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, the
Korean War {{Infobox military conflict , conflict = Korean War , partof = the Cold War and the Korean conflict , image = Korean War Montage 2.png , image_size = 300px , caption = Clockwise from top:{ ...
and the
Persian Gulf War The Gulf War was a 1990–1991 armed campaign waged by a Coalition of the Gulf War, 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Ba'athist Iraq, ...
, and the BBC resumed transmission during
2022 Russian invasion of Ukraine On 24 February 2022, in a major escalation of the Russo-Ukrainian War, which began in 2014. The invasion has resulted in tens of thousands of deaths on both sides. It has caused Europe's largest refugee crisis since World War II. A ...
. Listeners use inexpensive portable world band receivers to access the shortwave bands, and some advanced hobbyists employ specialized shortwave communications receivers featuring digital technology as well as
Digital signal processing Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are ...
designed for optimum reception of shortwave signals, along with outdoor antennas to enhance performance. Many hobbyists also choose to use
Software-defined radio Software-defined radio (SDR) is a radio communication system where components that have been traditionally implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by ...
receivers for their benefits over traditional radios. With the advent of the
Internet The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, p ...
, many international broadcasters have scaled back or terminated their shortwave transmissions in favor of web-based program distribution, while others are moving from traditional analog to digital broadcasting modes in order to allow more efficient delivery of shortwave programming. The number of organized shortwave listening clubs has diminished along with printed magazines devoted to the hobby; however, many enthusiasts continue to exchange information and news on the web.


History

The practice of listening to distant stations in the
medium wave Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the dayti ...
AM broadcast band was carried over to the shortwave bands. Frank Conrad, an early pioneer of medium wave broadcasting with KDKA in
Pittsburgh Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...
, instituted some of the first shortwave broadcasts around 1921. Stations affiliated with
General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable ene ...
and
Crosley Crosley was a small, independent American manufacturer of subcompact cars, bordering on microcars. At first called the Crosley Corporation and later Crosley Motors Incorporated, the Cincinnati, Ohio, firm was active from 1939 to 1952, int ...
followed shortly after.
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
shortwave broadcasters began transmitting popular radio programs in an attempt to attract foreign audiences. During the 1930s, new shortwave receivers appeared on the market as well as popular shortwave magazines and clubs. Shortwave stations often offered unique QSL cards for DXers. In
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
, shortwave broadcasts from Britain and the
Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...
such as Philips Radio's PCJJ began around 1927.
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwee ...
,
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
, the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
, Britain, and many other countries soon followed, and some classic shortwave broadcasters got their start. The BBC began on shortwave as the "BBC Empire Service" in 1932. Its broadcasts were aimed principally at
English speakers English is a West Germanic language of the Indo-European language family, with its earliest forms spoken by the inhabitants of early medieval England. It is named after the Angles, one of the ancient Germanic peoples that migrated to the i ...
. Radio Moscow was broadcasting on shortwave in
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ...
,
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
,
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...
, Italian and
Arabic Arabic (, ' ; , ' or ) is a Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C. E.Watson; Walter ...
by 1939. The
Voice of America Voice of America (VOA or VoA) is the State media, state-owned news network and International broadcasting, international radio broadcaster of the United States, United States of America. It is the largest and oldest U.S.-funded international br ...
(or VOA) began broadcasting in 1942 after its entry into
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
using the Yankee Doodle musical theme. While technically minded shortwave listening hobbyists dwindled during the war years due in part to the demands of military service, casual listeners seeking war news from foreign broadcasters increased. Shortwave receiver manufacturers contributed to war production.
Zenith The zenith (, ) is an imaginary point directly "above" a particular location, on the celestial sphere. "Above" means in the vertical direction ( plumb line) opposite to the gravity direction at that location ( nadir). The zenith is the "high ...
launched the multi-band
Trans-Oceanic The Trans-Oceanic (abbreviated T/O) was a brand of portable radios produced from 1941 to 1981 by Zenith Radio. They were characterized by heavy-duty, high-quality construction and their performance as shortwave receivers. History Zenith's found ...
series of radios in 1942. In some other countries, during the war, listening to foreign stations was a criminal offense. Established in 1939, 35-kilowatt Chinese shortwave station XGOY broadcast programming aimed at listening-restricted
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
. The station was often bombed by the Japanese. In 1930, VE9GW in
Bowmanville, Ontario Bowmanville is a town of approximately 40,000 people located in the Municipality of Clarington, Durham Region, Ontario, Canada. It is approximately east of Toronto, and east of Oshawa along Highway 2. Bowmanville was first incorporated as a ...
(near
Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the anch ...
) went on the air as an experimental station. While mostly simulcasting its
medium wave Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the dayti ...
sister station In broadcasting, sister stations or sister channels are radio or television stations operated by the same company, either by direct ownership or through a management agreement. Radio sister stations will often have different formats, and somet ...
CKGW in Toronto, it also aired the ''International Short Wave Listening Club'', aimed at DXers. Once the station boosted its signal to 500 Watts in 1932, it could be heard as far away as Europe, South Africa, and New Zealand on 6.095 MHz. It, and other Canadian shortwave stations, began broadcasting '' Northern Messenger'' in 1933, a mailbag show which allowed people to communicate personal messages to listeners in remote outposts in the Far North. This service became a vital means of communication between residents in remote, isolated communities and their friends and relatives in other northern communities and the south and would continue on
CBC Radio CBC Radio is the English-language radio operations of the Canadian Broadcasting Corporation. The CBC operates a number of radio networks serving different audiences and programming niches, all of which (regardless of language) are outlined belo ...
(including its shortwave repeaters) into the 1970s. CBS began a shortwave listening program in September 1939, on an experimental basis, at the National Lawn Tennis Championships at
West Side Tennis Club The West Side Tennis Club is a private tennis club located in Forest Hills, a neighborhood in the New York City borough of Queens. The club has 38 tennis courts in all four surfaces ( clay court, Har-Tru, grass court and hardcourt), a jun ...
in Forest Hills, New York. Engineers installed equipment at the CBS booth when the location was found to have good reception, and monitors relayed European shortwave news to CBS headquarters in New York between tennis matches."Radio: Propaganda Pigeons."
''
Time Time is the continued sequence of existence and event (philosophy), events that occurs in an apparently irreversible process, irreversible succession from the past, through the present, into the future. It is a component quantity of various me ...
'', September 7, 1942, pp. 65–66
Throughout World War II, CBS captured Allied and enemy shortwave communications from more than 60 international stations via secretly located receivers. Translations of intercepted broadcasts were teletyped to all New York newspapers,
Associated Press The Associated Press (AP) is an American non-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association. It produces news reports that are distributed to its members, U.S. new ...
,
United Press International United Press International (UPI) is an American international news agency whose newswires, photo, news film, and audio services provided news material to thousands of newspapers, magazines, radio and television stations for most of the 2 ...
and
International News Service The International News Service (INS) was a U.S.-based news agency (newswire) founded by newspaper publisher William Randolph Hearst in 1909.
, and in turn disseminated to newspapers and radio stations throughout the United States. Major headline news frequently resulted, since big stories often broke first on radio."24,000,000 'Stolen' Words Go to Library of Congress." ''
The Christian Science Monitor ''The Christian Science Monitor'' (''CSM''), commonly known as ''The Monitor'', is a nonprofit news organization that publishes daily articles in electronic format as well as a weekly print edition. It was founded in 1908 as a daily newspaper ...
'', September 4, 1945
Shortwave listeners notified families of
prisoners of war A prisoner of war (POW) is a person who is held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610. Belligerents hold prisoners of w ...
when studio announcers at stations in
Axis powers The Axis powers, ; it, Potenze dell'Asse ; ja, 枢軸国 ''Sūjikukoku'', group=nb originally called the Rome–Berlin Axis, was a military coalition that initiated World War II and fought against the Allies. Its principal members were ...
countries, such as Germany and Japan, read prisoner-written messages. Allied monitors notified families, but many shortwave listeners were often first to report the broadcasts. Listeners in other countries also monitored POW messages. Americans were actively discouraged from listening to these reports, however, since broadcasting the names of a few American prisoners was regarded as a propaganda trick to build up the listening audience for Axis radio programs. In May 1943 Jack Gerber, director of the CBS listening post, told journalist William L. Shirer that the International Red Cross was the only reliable source of information on prisoners, and expressed concern at receiving six or seven letters a week requesting transcripts of German broadcasts in which service members may have been mentioned:
The only reason the Nazis put on prisoner broadcasts is to get people justifiably anxious about relatives reported missing at the front to listen to their propaganda. Although many of the messages undoubtedly are true, they represent but a small fraction of our prisoners and we have no assurance that many of them are not faked from papers picked up on the battlefield. What concerns some of us is the consequences of listening to Nazi broadcasts unless you are a well-trained listener (and often, even if you are). Nazi arguments often sound plausible. A person may listen to them with all the skepticism in the world, knowing that every word is a lie. But if the content is sufficiently sensational (and it often is) the source may be forgotten in time, and out pops the Nazi lie, all unsuspecting.
New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island coun ...
shortwave listeners reported POW voices broadcast over
Radio Peking China Radio International (CRI) is the state-owned international radio broadcaster of China. It is currently headquartered in the Babaoshan area of Beijing's Shijingshan District. It was founded on December 3, 1941, as Radio Peking. It later ...
during the
Korean War {{Infobox military conflict , conflict = Korean War , partof = the Cold War and the Korean conflict , image = Korean War Montage 2.png , image_size = 300px , caption = Clockwise from top:{ ...
. In the 1950s and 1960s, shortwave DX columns in US magazines such as ''
Popular Electronics ''Popular Electronics'' was an American magazine published by John August Media, LLC, and hosted at TechnicaCuriosa.com. The magazine was started by Ziff-Davis Publishing Company in October 1954 for electronics hobbyists and experimenters. It soo ...
''′ "Tuning the Short Wave Bands" and '' Electronics Illustrated''′s "The Listener" became news sources for serious radio listeners. ''Popular Electronics''′ "WPE Monitor Registration" program, begun in 1959, even offered callsign-like identifiers to hobbyists. A number of specialty radio clubs such as the ''Newark News Radio Club'' also arose during these decades and provided hobbyists with an exchange of DX news and information. When Popular Electronics and similar magazines expanded coverage of new electronics topics in the 1970s, this led to the cancellation of several long-time shortwave listening columns. Beginning with '' Sweden Calling DXers'' on
Radio Sweden Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitt ...
in 1948 (there was a slightly earlier short-lived program from
Radio Australia ABC Radio Australia, also known as Radio Australia, is the international broadcasting and online service operated by the Australian Broadcasting Corporation (ABC), Australia's public broadcaster. Most programming is in English, with some in Tok ...
), many shortwave radio stations began programs providing news. Some of the other prominent DX programs were Radio Netherlands' ''DX Jukebox'' (which became ''
Media Network Media Network is the name of a weekly radio programme broadcast on Radio Netherlands Worldwide from 7 May 1981 until 26 October 2000. When the programme began the station was known as Radio Nederland, but was renamed Radio Netherlands shortly th ...
''), the ''SWL Digest'' on
Radio Canada International 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 ...
, and the ''Swiss Shortwave Merry-go-round'' on Swiss Radio International. An example of notable shortwave programming was the ''
Happy Station Show The ''Happy Station Show'' was one of the world's longest-running international radio programmes, having originated in 1928 on shortwave radio and airing its final edition on 27 December 2020. The original show followed a format of light entertain ...
'', popularly called the “world's longest-running shortwave radio program”. The show originated on Philips Radio's PCJJ shortwave station in 1928, continuing until 1940. After World War II
Radio Netherlands Radio Netherlands (RNW; nl, Radio Nederland Wereldomroep) was a public radio and television network based in Hilversum, producing and transmitting programmes for international audiences outside the Netherlands from 1947 to 2012. Its services i ...
broadcast the show from 1946 until it terminated in 1995. Producer and presenter Keith Perron revived Happy Station on March 12, 2009. Although no longer associated with Radio Netherlands, the new effort proclaims itself as “transmitted globally via shortwave, podcasting and Internet streaming radio”.Osterman, Fred. "Newsroom.
''DXing Newsroom''.
2004. Universal Radio Research. 6 April 2010.
During the
Persian Gulf War The Gulf War was a 1990–1991 armed campaign waged by a Coalition of the Gulf War, 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Ba'athist Iraq, ...
in the 1990s, many Americans tuned into foreign news broadcasts on shortwave. Some electronics retailers even reported a "run" on portable shortwave receivers due to the increased interest at the time.


Practices

Listening to shortwave broadcast stations for
news News is information about current events. This may be provided through many different media: word of mouth, printing, postal systems, broadcasting, electronic communication, or through the testimony of observers and witnesses to events. N ...
and information programming is common, but for many shortwave listeners (abbreviated as "SWLs"), the goal is to receive as many stations from as many countries as possible, also known as DXing. "DXers" routinely test the limits of their antenna systems, radios and
radio propagation Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another in vacuum, or into various parts of the atmosphere. As a form of electromagnetic radiation, like light waves, radio waves are affect ...
knowledge. Specialized interests of shortwave listeners may include listening for shortwave utility, or "ute", transmissions such as
shipping Freight transport, also referred as ''Freight Forwarding'', is the physical process of transporting commodities and merchandise goods and cargo. The term shipping originally referred to transport by sea but in American English, it has been ...
,
sailing Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the ''water'' (sailing ship, sailboat, raft, windsurfer, or kitesurfer), on ''ice'' (iceboat) or on ''land'' (land yacht) over a chosen cou ...
, naval,
aviation Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as hot a ...
, or
military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...
signals, listening for
intelligence Intelligence has been defined in many ways: the capacity for abstraction, logic, understanding, self-awareness, learning, emotional knowledge, reasoning, planning, creativity, critical thinking, and problem-solving. More generally, it can be des ...
signals (
numbers station 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 vocal ...
s), or tuning in amateur radio stations. Listeners often obtain
QSL card A QSL card is a written confirmation of either a two-way radiocommunication between two amateur radio or citizens band stations; a one-way reception of a signal from an AM radio, FM radio, television or shortwave broadcasting station; or the re ...
s (which confirm contact) from ham operators, broadcasters or utility stations as trophies of the hobby. Traditionally, listeners would send letters to the station with reception reports and requests for schedules. Many stations now accept
E-mail Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. Email was thus conceived as the electronic (digital) version of, or counterpart to, mail, at a time when "mail" meant ...
s or provide reception report forms on their Web sites. Reception reports give valuable information about propagation and interference to a station's
engineer Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limit ...
s. There have been several publications dedicated to providing information to shortwave listeners, including the magazines ''Popular Communications'' (now a "digital supplement" to CQ Amateur Radio magazine), ''Monitoring Times'' (now defunct), and The Spectrum Monitor, a digital-only publication, in the United States, and the annual publications ''Passport to World Band Radio'' (now defunct) and the ''World Radio TV Handbook'' (WRTH). In addition, stations can provide broadcast schedules through the mail or E-mail. There are also shortwave radio programs dedicated to shortwave listening and DXing, such as the U.S.-based ''World of Radio'' and ''DXing With Cumbre'', but recently these programs have been curtailed or dropped by many international broadcasters. As of 2007,
Radio Habana Cuba Radio Havana Cuba ( es, Radio Habana Cuba, RHC) 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, along with ...
still hosts a program called DXers Unlimited. There are estimated to be millions of shortwave listeners. In 2002, according to the National Association Of Shortwave Broadcasters, for estimated numbers of households with at least one shortwave set in working order, Asia led with a large majority, followed by Europe, Sub Saharan Africa, and the former Soviet Union, respectively. The total estimated number of households worldwide with at least one shortwave set in working order was said to be 600 million. SWLs are varied, with no common age or occupation. David Letterman is an admitted fan of the
British Broadcasting Corporation #REDIRECT BBC #REDIRECT BBC #REDIRECT BBC Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board ex ...
(BBC). Some developing countries use shortwave as a means of receiving local and regional programming. China and
Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...
retransmit some domestic channels on shortwave that target listeners in far off provinces. Shortwave listening is also used as an educational tool in classrooms. Poor sound reproduction, unreliable signal quality, and inflexibility of access are seen as disadvantages.Wipf, Joseph A
"Shortwave Radio and the Second Language Class."
''The Modern Language Journal.'' 68.1 (Spring 1984): 7–8. JSTOR. 3 March 2010.
Some humanitarian organizations like ''Ears to Our World'' distribute portable, self-powered shortwave radios to less developed parts of the globe, enabling people in remote, impoverished parts of the world to get educational programming, local and international news, emergency information and music. Recently, the group was involved in sending radios to Haiti so victims of the
2010 Haiti earthquake A catastrophic magnitude 7.0 Mw earthquake struck Haiti at 16:53 local time (21:53 UTC) on Tuesday, 12 January 2010. The epicenter was near the town of Léogâne, Ouest department, approximately west of Port-au-Prince, Haiti's c ...
could stay abreast of local disaster recovery efforts.


Equipment

Radios for shortwave reception generally have higher performance than those intended for the local
mediumwave Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the dayti ...
,
longwave 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 e ...
or FM broadcast band, since dependable reception of shortwave signals requires a radio with increased sensitivity,
selectivity Selectivity may refer to: Psychology and behaviour * Choice, making a selection among options * Discrimination, the ability to recognize differences * Socioemotional selectivity theory, in social psychology Engineering * Selectivity (radio), a ...
,
dynamic range Dynamic range (abbreviated DR, DNR, or DYR) is the ratio between the largest and smallest values that a certain quantity can assume. It is often used in the context of Signal (electrical engineering), signals, like sound and light. It is measured ...
and frequency stability. Modern shortwave radio receivers are relatively inexpensive and easily accessible, and many hobbyists use portable "world band" receivers and built-in telescopic
antennas In radio engineering, an antenna or aerial is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver. In transmission, a radio transmitter supplies an ...
. Serious hobbyists may use expensive (shortwave) communications receivers and outdoor antenna located away from electrical noise sources, such as a
dipole In physics, a dipole () is an electromagnetic phenomenon which occurs in two ways: *An electric dipole deals with the separation of the positive and negative electric charges found in any electromagnetic system. A simple example of this system ...
made from wire and insulators.


Future of shortwave listening

The rise of the
Internet The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, p ...
has resulted in many
broadcasters Broadcaster may refer to: * A presenter of any syndicated media program * A broadcasting organization, one responsible for audio and video content and/or their transmission * A sports commentator on television or radio * Broadcaster, currently ...
ceasing their shortwave transmissions in favor of broadcasting over the
World Wide Web The World Wide Web (WWW), commonly known as the Web, is an information system enabling documents and other web resources to be accessed over the Internet. Documents and downloadable media are made available to the network through web ...
. When BBC World Service discontinued service to Europe, North America,
Australasia Australasia is a region that comprises Australia, New Zealand and some neighbouring islands in the Pacific Ocean. The term is used in a number of different contexts, including geopolitically, physiogeographically, philologically, and ecologi ...
, and the Caribbean, it generated many protests and activist groups such as the Coalition to Save the BBC World Service. In the US, the shifting of resources from shortwave to Internet and television by the
Broadcasting Board of Governors The United States Agency for Global Media (USAGM), formerly the Broadcasting Board of Governors (BBG), is an independent agency of the United States government that broadcasts news and information. It describes its mission, "vital to US nation ...
, which oversees U.S. international broadcasting, has also resulted in reduced broadcasting hours in the English language.
Radio Netherlands Radio Netherlands (RNW; nl, Radio Nederland Wereldomroep) was a public radio and television network based in Hilversum, producing and transmitting programmes for international audiences outside the Netherlands from 1947 to 2012. Its services i ...
,
Voice of Russia Voice of Russia ( rus, Голос России, r=Golos Rossii), commonly abbreviated VOR, was the Russian government's international radio broadcasting service from 1993 until 2014, when it was reorganised as Radio Sputnik. Its interval signal w ...
(formerly Radio Moscow),
Radio Canada International 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 ...
and
Radio Australia ABC Radio Australia, also known as Radio Australia, is the international broadcasting and online service operated by the Australian Broadcasting Corporation (ABC), Australia's public broadcaster. Most programming is in English, with some in Tok ...
are among the prominent broadcasters who have ceased broadcasting on shortwave. Although most of the prominent broadcasters continue to scale back their analog shortwave transmissions or completely terminate them, shortwave is still very common and active in developing regions such as parts of Africa. Some international broadcasters have turned to a digital mode of broadcasting called Digital Radio Mondiale for their shortwave outlets. One reason is that digital shortwave broadcasts using DRM can cover the same geographic region with much less transmitter power — roughly one-fifth — than traditional AM mode broadcasts, significantly reducing the electricity cost of operating a station. A traditional AM (analog) international shortwave station can have a power rating of 50 kilowatts to as much as 1000 kilowatts per transmitter, with typical power levels in the 50–500 kilowatt range. Endorsed by the
ITU The International Telecommunication Union is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Unio ...
, it has been approved as an international standard for digital broadcasts on the HF (shortwave) bands. A DRM broadcast rivals FM mono quality and can also send graphic images and web pages via a separate information channel.''Digital Radio Mondiale''
/ref> Shortwave listening also remains popular with some
expatriates An expatriate (often shortened to expat) is a person who resides outside their native country. In common usage, the term often refers to educated professionals, skilled workers, or artists taking positions outside their home country, either ...
who tune in shortwave transmissions from their homeland. Additionally, a number of remotely controlled shortwave receivers located around the world are available to users on the web. While radio hobbyists report that the number of shortwave listening clubs has diminished and printed magazines devoted to the hobby are few, enthusiasts such as Glenn Hauser and others continue to populate web sites, and originate podcasts dedicated to the pursuit.


See also

*
International broadcasting 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 ...
*
MW DX MW DX, short for mediumwave DXing, is the hobby of receiving distant mediumwave (also known as '' AM'') radio stations. MW DX is similar to TV and FM DX in that broadcast band (BCB) stations are the reception targets. However, the nature of the lo ...
– Similar to SW DXing except on the MW (AM Radio) band *
List of American shortwave broadcasters 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 ...
* List of European short wave transmitters *
List of shortwave radio broadcasters This is a List of shortwave radio broadcasters updated on Aug 22, 2021: By country By frequency See also * International broadcasting International broadcasting, in a limited extent, began during World War I, when German and British stations ...
*'' World War II Radio Heroes: Letters of Compassion''


References


Further reading

*World Radio TV Handbook WRTH, . *Passport to World Band Radio, www.passband.com, (2007 ed.) (2008 ed.) (2009 ed.) * *''
Popular Communications ''Popular Communications'' was a magazine with content relating to the radio hobby, including scanners, shortwave radio, CB, amateur radio, AM and FM broadcast band listening, radio history, and vintage radio restoration. The magazine existed be ...
'' monthly magazine published by CQ Communications. *
Monitoring Times
'—Monthly publication has ceased, but Grove Enterprises in Brasstown NC maintains some features at its website.


External links

*{{curlie, Recreation/Radio/Shortwave_and_DX_Listening, Shortwave Radio Short wave radio Observation hobbies Radio hobbies