A sailor , seaman , mariner , or seafarer is a person who works aboard a watercraft as part of its crew, and may work in any one of a number of different fields that are related to the operation and maintenance of a ship.
85-612: Deutschlandsender ( German: [ˈdɔʏtʃlantˌzɛndɐ] , Radio Germany ), abbreviated DLS or DS , was one of the longest-established radio broadcasting stations in Germany . The name was used between 1926 and 1993 to denote a number of powerful stations designed to achieve a nationwide coverage. Deutschlandsender I at first was the name of a powerful transmitter situated at Königs Wusterhausen in Brandenburg near Berlin , put into operation on 7 January 1926. The station
170-427: A "radio station" as a government-licensed AM or FM station; an HD Radio (primary or multicast) station; an internet stream of an existing government-licensed station; one of the satellite radio channels from XM Satellite Radio or Sirius Satellite Radio ; or, potentially, a station that is not government licensed. AM stations were the earliest broadcasting stations to be developed. AM refers to amplitude modulation ,
255-496: A United Nations agency, and the Nautical Institute seek improved international standards for mariners. One's service aboard ships typically extends for months at a time, followed by protracted shore leave. However, some seamen secure jobs on ships they like and stay aboard for years. In rare cases, veteran mariners choose never to go ashore when in port. Further, the quick turnaround of many modern ships, spending only
340-494: A business opportunity to sell advertising or subscriptions to a broader audience. This is more efficient than broadcasting to a single country, because domestic entertainment programs and information gathered by domestic news staff can be cheaply repackaged for non-domestic audiences. Governments typically have different motivations for funding international broadcasting. One clear reason is for ideological, or propaganda reasons. Many government-owned stations portray their nation in
425-635: A chance to see the world also appeal to many seafarers. Whatever the calling, those who live and work at sea invariably confront social isolation. Findings by the Seafarer's International Research Center indicate a leading cause of mariners leaving the industry is "almost invariably because they want to be with their families". U.S. merchant ships typically do not allow family members to accompany seafarers on voyages. Industry experts increasingly recognize isolation, stress, and fatigue as occupational hazards. Advocacy groups such as International Labor Organization,
510-463: A kind of vacuum tube , was invented in 1904 by the English physicist John Ambrose Fleming . He developed a device that he called an "oscillation valve," because it passes current in only one direction. The heated filament, or cathode , was capable of thermionic emission of electrons that would flow to the plate (or anode ) when it was at a higher voltage. Electrons, however, could not pass in
595-597: A legal basis. Temporarily affiliated with the national ARD and ZDF public-service broadcasters, it was merged with the former West Berlin RIAS station to form Deutschlandradio Kultur with effect from 1 January 1994. With the Federal Republic's all-Germany service, Deutschlandfunk at Cologne , it today forms the Deutschlandradio broadcasting organisation, providing two nationwide radio stations for
680-633: A lifeboat and later went on to write the James Bond movies Never Say Never Again and Thunderball . Members of the American Beat Movement Allen Ginsberg , Jack Kerouac , Bob Kaufman , and Herbert Huncke were all Merchant Mariners. It is perhaps not surprising that the writers of Moby Dick , The American Practical Navigator , and Two Years Before the Mast were Merchant Mariners. It might be surprising that
765-410: A mariner's off-duty time at sea is largely a solitary affair, pursuing hobbies, reading, writing letters, and sleeping. Internet accessibility is fast coming to the sea with the advent of cheap satellite communication, mainly from Inmarsat . The availability of affordable roaming SIM cards with online top-up facilities have also contributed to improved connection with friends and family at home. Erik
850-496: A matter of hours in port, limits a seafarer's free-time ashore. Moreover, some seafarers entering U.S. ports from a watch list of 25 countries deemed high-risk face restrictions on shore leave due to security concerns in a post 9/11 environment. However, shore leave restrictions while in U.S. ports impact American seamen as well. For example, the International Organization of Masters, Mates & Pilots notes
935-546: A mode of broadcasting radio waves by varying the amplitude of the carrier signal in response to the amplitude of the signal to be transmitted. The medium-wave band is used worldwide for AM broadcasting. Europe also uses the long wave band. In response to the growing popularity of FM stereo radio stations in the late 1980s and early 1990s, some North American stations began broadcasting in AM stereo , though this never gained popularity and very few receivers were ever sold. The signal
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#17327977296741020-413: A much safer position. Most newer vessels are air conditioned, soundproofed from noisy machinery, and equipped with comfortable living quarters. These amenities have helped ease the sometimes difficult circumstances of long periods away from home. Also, modern communications such as email, instant messaging and social media platforms link modern mariners to their families. Nevertheless, some mariners dislike
1105-592: A national boundary. In other cases, a broadcast may be considered "pirate" due to the type of content, its transmission format, or the transmitting power (wattage) of the station, even if the transmission is not technically illegal (such as a webcast or an amateur radio transmission). Pirate radio stations are sometimes referred to as bootleg radio or clandestine stations. Digital radio broadcasting has emerged, first in Europe (the UK in 1995 and Germany in 1999), and later in
1190-426: A positive, non-threatening way. This could be to encourage business investment in or tourism to the nation. Another reason is to combat a negative image produced by other nations or internal dissidents, or insurgents. Radio RSA , the broadcasting arm of the apartheid South African government, is an example of this. A third reason is to promote the ideology of the broadcaster. For example, a program on Radio Moscow from
1275-868: A ship includes: American ships also carry a qualified member of the engine department . Other possible positions include motorman, machinist , electrician , refrigeration engineer and tankerman. A typical steward's department for a cargo ship is a chief steward , a chief cook and a steward's assistant . All three positions are typically filled by unlicensed personnel. The chief steward directs, instructs, and assigns personnel performing such functions as preparing and serving meals; cleaning and maintaining officers' quarters and steward department areas; and receiving, issuing, and inventorying stores. The chief steward also plans menus, compiles supply, overtime, and cost control records. The steward may requisition or purchase stores and equipment. Galley's roles may include baking. A chief steward's duties may overlap with those of
1360-460: A significant threat to the AM broadcasting industry. It required purchase of a special receiver. The frequencies used, 42 to 50 MHz, were not those used today. The change to the current frequencies, 88 to 108 MHz, began after the end of World War II and was to some extent imposed by AM broadcasters as an attempt to cripple what was by now realized to be a potentially serious threat. FM radio on
1445-412: A trend of U.S. shipping terminal operators restricting seamen from traveling from the ship to the terminal gate. Further, in cases where transit is allowed, special "security fees" are at times assessed. Such restrictions on shore leave coupled with reduced time in port by many ships translate into longer periods at sea. Mariners report that extended periods at sea living and working with shipmates who for
1530-426: Is all that is necessary for a narrowband FM signal. The 200 kHz bandwidth allowed room for ±75 kHz signal deviation from the assigned frequency, plus guard bands to reduce or eliminate adjacent channel interference. The larger bandwidth allows for broadcasting a 15 kHz bandwidth audio signal plus a 38 kHz stereo "subcarrier" —a piggyback signal that rides on the main signal. Additional unused capacity
1615-415: Is another regular task. Engineering staff is required to have training in firefighting and first aid. Additional duties include maintaining the ship's boats and performing other nautical tasks. Engineers play a key role in cargo loading/discharging gear and safety systems, though the specific cargo discharge function remains the responsibility of deck officers and deck workers. A common engineering crew for
1700-421: Is little affected by daily changes in the ionosphere, so broadcasters need not reduce power at night to avoid interference with other transmitters. FM refers to frequency modulation , and occurs on VHF airwaves in the frequency range of 88 to 108 MHz everywhere except Japan and Russia . Russia, like the former Soviet Union , uses 65.9 to 74 MHz frequencies in addition to the world standard. Japan uses
1785-472: Is sometimes mandatory, such as in New Zealand, which uses 700 kHz spacing (previously 800 kHz). The improved fidelity made available was far in advance of the audio equipment of the 1940s, but wide interchannel spacing was chosen to take advantage of the noise-suppressing feature of wideband FM. Bandwidth of 200 kHz is not needed to accommodate an audio signal — 20 kHz to 30 kHz
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#17327977296741870-453: Is subject to interference from electrical storms ( lightning ) and other electromagnetic interference (EMI). One advantage of AM radio signal is that it can be detected (turned into sound) with simple equipment. If a signal is strong enough, not even a power source is needed; building an unpowered crystal radio receiver was a common childhood project in the early decades of AM broadcasting. AM broadcasts occur on North American airwaves in
1955-413: Is the automation of radio stations. Some stations now operate without direct human intervention by using entirely pre-recorded material sequenced by computer control. Sailor The profession of the sailor is old, and the term sailor has its etymological roots in a time when sailing ships were the main mode of transport at sea, but it now refers to the personnel of all watercraft regardless of
2040-447: Is used by some broadcasters to transmit utility functions such as background music for public areas, GPS auxiliary signals, or financial market data. The AM radio problem of interference at night was addressed in a different way. At the time FM was set up, the available frequencies were far higher in the spectrum than those used for AM radio - by a factor of approximately 100. Using these frequencies meant that even at far higher power,
2125-772: The Deutschlandsender I transmitter enabled programmes from these stations to be heard throughout the country and its name was adopted as a station identification. The first programme broadcast was a concert from the RRG Berlin regional station, the Funk-Stunde AG. With effect from 1 January 1933, the Deutsche Welle company was renamed Deutschlandsender GmbH . Within a few weeks of this date the Nazi Ministry of Public Enlightenment and Propaganda
2210-529: The Empire State Building , started its transmissions on 19 May 1939 from Herzberg . These transmitters were destroyed and dismantled by the Red Army in 1945. During World War II the name Deutschlandsender was used to denote the long-wave service which covered most of Germany (and indeed Europe) while the regional medium-wave stations were normally identified as Reichssender [...] with
2295-570: The Marconi Research Centre 2MT at Writtle near Chelmsford, England . A famous broadcast from Marconi's New Street Works factory in Chelmsford was made by the famous soprano Dame Nellie Melba on June 15, 1920, where she sang two arias and her famous trill. She was the first artist of international renown to participate in direct radio broadcasts. The 2MT station began to broadcast regular entertainment in 1922. The BBC
2380-516: The medium wave frequency range of 525 to 1,705 kHz (known as the "standard broadcast band"). The band was expanded in the 1990s by adding nine channels from 1,605 to 1,705 kHz. Channels are spaced every 10 kHz in the Americas , and generally every 9 kHz everywhere else. AM transmissions cannot be ionospheric propagated during the day due to strong absorption in the D-layer of
2465-650: The steward's assistant , the chief cook , and other Steward's department crewmembers. A person in the United States Merchant Marine has to have a Merchant Mariner's Document issued by the United States Coast Guard in order to serve as a chief steward. All chief cooks who sail internationally are similarly documented by their respective countries because of international conventions and agreements. The only time that steward department staff are charged with duties outside
2550-544: The "Voice of the GDR" changed its name to Deutschlandsender . In May of the same year, it was combined with the existing national Radio DDR 2 to form Deutschlandsender Kultur , with headquarters at Funkhaus Nalepastraße. Broadcasting started on 16 June 1990. As set out in the German Reunification Treaty of October 3, East German radio stations were to be closed, DS Kultur's operations therefore lacked
2635-702: The 1960s to the 1980s was What is Communism? A second reason is to advance a nation's foreign policy interests and agenda by disseminating its views on international affairs or on the events in particular parts of the world. During the Cold War the American Radio Free Europe and Radio Liberty and Indian Radio AIR were founded to broadcast news from "behind the Iron Curtain " that was otherwise being censored and promote dissent and occasionally, to disseminate disinformation . Currently,
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2720-593: The 76 to 90 MHz frequency band. Edwin Howard Armstrong invented wide-band FM radio in the early 1930s to overcome the problem of radio-frequency interference (RFI), which plagued AM radio reception. At the same time, greater fidelity was made possible by spacing stations further apart in the radio frequency spectrum. Instead of 10 kHz apart, as on the AM band in the US, FM channels are 200 kHz (0.2 MHz) apart. In other countries, greater spacing
2805-644: The Deutschlandsender was relaunched as an "all-German" service, with FM coverage added. A further reorganisation occurred when, in 1971, the State Broadcasting Committee of the GDR decided to merge the main station aimed at both sides of Berlin, Berliner Welle , with the Deutschlandsender to create Stimme der DDR ("Voice of the GDR"). This new information and news service began in November 1972. This program of Rundfunk der DDR
2890-802: The Red and his son Leif Erikson were the first notable mariners known to sail in a primitive, partly man powered vessel across the Arctic and the North Atlantic Ocean. Barbarossa Hayrettin Pasha (Turkish: Barbaros Hayrettin Paşa or Hızır Hayrettin Paşa; also Hızır Reis before being promoted to the rank of Pasha and becoming the Kaptan-ı Derya (Fleet Admiral) of the Ottoman Navy) (c. 1478 – 4 July 1546)
2975-506: The U.S. Federal Communications Commission designates the 88–92 megahertz band in the U.S. for non-profit or educational programming, with advertising prohibited. In addition, formats change in popularity as time passes and technology improves. Early radio equipment only allowed program material to be broadcast in real time, known as live broadcasting. As technology for sound recording improved, an increasing proportion of broadcast programming used pre-recorded material. A current trend
3060-759: The US and Canada , just two services, XM Satellite Radio and Sirius Satellite Radio exist. Both XM and Sirius are owned by Sirius XM Satellite Radio , which was formed by the merger of XM and Sirius on July 29, 2008, whereas in Canada , XM Radio Canada and Sirius Canada remained separate companies until 2010. Worldspace in Africa and Asia, and MobaHO! in Japan and the ROK were two unsuccessful satellite radio operators which have gone out of business. Radio program formats differ by country, regulation, and markets. For instance,
3145-580: The US operates similar services aimed at Cuba ( Radio y Televisión Martí ) and the People's Republic of China , Vietnam , Laos and North Korea ( Radio Free Asia ). Besides ideological reasons, many stations are run by religious broadcasters and are used to provide religious education, religious music, or worship service programs. For example, Vatican Radio , established in 1931, broadcasts such programs. Another station, such as HCJB or Trans World Radio will carry brokered programming from evangelists. In
3230-553: The United States Coast Guard. Pilots are also merchant marine officers and are licensed by the Coast Guard. Mariners spend extended periods at sea. Most deep-sea mariners are hired for one or more voyages that last for several months. There is no job security after that. The length of time between voyages varies by job availability and personal preference. The rate of unionization for these workers in
3315-691: The United States and Canada have chosen to use HD radio , an in-band on-channel system that puts digital broadcasts at frequencies adjacent to the analog broadcast. HD Radio is owned by a consortium of private companies that is called iBiquity . An international non-profit consortium Digital Radio Mondiale (DRM), has introduced the public domain DRM system, which is used by a relatively small number of broadcasters worldwide. Broadcasters in one country have several reasons to reach out to an audience in other countries. Commercial broadcasters may simply see
3400-589: The United States came from KDKA itself: the results of the Harding/Cox Presidential Election . The Montreal station that became CFCF began broadcast programming on May 20, 1920, and the Detroit station that became WWJ began program broadcasts beginning on August 20, 1920, although neither held a license at the time. In 1920, wireless broadcasts for entertainment began in the UK from
3485-461: The United States is about 36 percent, much higher than the average for all occupations. Consequently, merchant marine officers and seamen, both veterans and beginners, are hired for voyages through union hiring halls or directly by shipping companies. Hiring halls fill jobs by the length of time the person has been registered at the hall and by their union seniority. Hiring halls typically are found in major seaports. At sea, on larger vessels members of
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3570-643: The United States, France, the Netherlands, South Africa, and many other countries worldwide. The simplest system is named DAB Digital Radio, for Digital Audio Broadcasting , and uses the public domain EUREKA 147 (Band III) system. DAB is used mainly in the UK and South Africa. Germany and the Netherlands use the DAB and DAB+ systems, and France uses the L-Band system of DAB Digital Radio. The broadcasting regulators of
3655-792: The Victoria Cross and the Medal of Honor . American merchant seamen have won the Medal of Honor in the Korean War and Vietnam War , and one went on to become the "Father of the American Navy." One does not have to look far to find merchant seamen who became war heroes in Scotland , France , New Zealand , Peru , or Denmark . Since World War II, a number of merchant seamen have become notorious criminals. American William Colepaugh
3740-728: The case of the Broadcasting Services of the Kingdom of Saudi Arabia , both governmental and religious programming is provided. Extensions of traditional radio-wave broadcasting for audio broadcasting in general include cable radio , local wire television networks , DTV radio , satellite radio , and Internet radio via streaming media on the Internet . The enormous entry costs of space-based satellite transmitters and restrictions on available radio spectrum licenses has restricted growth of Satellite radio broadcasts. In
3825-400: The chief mate is most often charged with the duties of cargo mate. Second Mates are charged with being the medical officer in case of a medical emergency. All three mates each do four-hour morning and afternoon shifts on the bridge, when underway at sea. A common deck crew for a ship includes: A ship's engineering department consists of the members of a ship's crew that operates and maintains
3910-758: The city of Sydney, Australia . Merchant mariner Douglass North went from seaman to navigator to winner of the 1993 Nobel Prize in Economics. Jimmy Carter went on to become the 39th president of the United States after service in the US Navy. Members of the British Merchant Navy have won the Distinguished Service Cross and have had careers taking them from 'Deck Boy Peter' to Air Marshal Sir Beresford Peter Torrington Horsley KCB, CBE, LVO, AFC . Canadian merchant seamen have won
3995-722: The college teamed up with WLOE in Boston to have students broadcast programs. By 1931, a majority of U.S. households owned at least one radio receiver . In line to ITU Radio Regulations (article1.61) each broadcasting station shall be classified by the service in which it operates permanently or temporarily. Broadcasting by radio takes several forms. These include AM and FM stations. There are several subtypes, namely commercial broadcasting , non-commercial educational (NCE) public broadcasting and non-profit varieties as well as community radio , student-run campus radio stations, and hospital radio stations can be found throughout
4080-714: The company and the Carver Corporation later cut the number of models produced before discontinuing production completely. As well as on the medium wave bands, amplitude modulation (AM) is also used on the shortwave and long wave bands. Shortwave is used largely for national broadcasters, international propaganda, or religious broadcasting organizations. Shortwave transmissions can have international or inter-continental range depending on atmospheric conditions. Long-wave AM broadcasting occurs in Europe, Asia, and Africa. The ground wave propagation at these frequencies
4165-891: The content the listener must have a broadcast radio receiver ( radio ). Stations are often affiliated with a radio network that provides content in a common radio format , either in broadcast syndication or simulcast , or both. The encoding of a radio broadcast depends on whether it uses an analog or digital signal . Analog radio broadcasts use one of two types of radio wave modulation : amplitude modulation for AM radio , or frequency modulation for FM radio . Newer, digital radio stations transmit in several different digital audio standards, such as DAB ( Digital Audio Broadcasting ), HD radio , or DRM ( Digital Radio Mondiale ). The earliest radio stations were radiotelegraphy systems and did not carry audio. For audio broadcasts to be possible, electronic detection and amplification devices had to be incorporated. The thermionic valve ,
4250-467: The country at night. During the night, absorption largely disappears and permits signals to travel to much more distant locations via ionospheric reflections. However, fading of the signal can be severe at night. AM radio transmitters can transmit audio frequencies up to 15 kHz (now limited to 10 kHz in the US due to FCC rules designed to reduce interference), but most receivers are only capable of reproducing frequencies up to 5 kHz or less. At
4335-776: The deck department usually stand watch for four hours and are off for eight hours, seven days a week. Mariners work in all weather conditions. Working in damp and cold conditions often is inevitable, although ships try to avoid severe storms while at sea. It is uncommon for modern vessels to suffer disasters such as fire, explosion, or a sinking. Yet workers face the possibility of having to abandon ship on short notice if it collides with other vessels or runs aground. Mariners also risk injury or death from falling overboard and from hazards associated with working with machinery, heavy loads, and dangerous cargo. However, modern safety management procedures, advanced emergency communications, and effective international rescue systems place modern mariners in
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#17327977296744420-486: The dominant medium, especially in cities. Because of its greater range, AM remained more common in rural environments. Pirate radio is illegal or non-regulated radio transmission. It is most commonly used to describe illegal broadcasting for entertainment or political purposes. Sometimes it is used for illegal two-way radio operation. Its history can be traced back to the unlicensed nature of the transmission, but historically there has been occasional use of sea vessels—fitting
4505-583: The highest and lowest sidebands is quite apparent to the listener. Such distortion occurs up to frequencies of approximately 50 MHz. Higher frequencies do not reflect from the ionosphere, nor from storm clouds. Moon reflections have been used in some experiments, but require impractical power levels. The original FM radio service in the U.S. was the Yankee Network , located in New England . Regular FM broadcasting began in 1939 but did not pose
4590-474: The ionosphere. In a crowded channel environment, this means that the power of regional channels which share a frequency must be reduced at night or directionally beamed in order to avoid interference, which reduces the potential nighttime audience. Some stations have frequencies unshared with other stations in North America; these are called clear-channel stations . Many of them can be heard across much of
4675-424: The long periods away from home and the confinement aboard ship. They consequently leave the profession. Professional mariners live on the margins of society, with much of their life spent beyond the reach of land. They face cramped, stark, noisy, and dangerous conditions at sea. Yet men and women still go to sea. For some, the attraction is a life unencumbered with the restraints of life ashore. Seagoing adventure and
4760-470: The mode of transport, and encompasses people who operate ships professionally, be it for a military navy or civilian merchant navy , as a sport or recreationally. In a navy , there may be further distinctions: sailor may refer to any member of the navy even if they are based on land; while seaman may refer to a specific enlisted rank . Seafarers hold a variety of professions and ranks, each of which carries unique responsibilities which are integral to
4845-402: The most common perception of a pirate—as broadcasting bases. Rules and regulations vary largely from country to country, but often the term pirate radio describes the unlicensed broadcast of FM radio, AM radio, or shortwave signals over a wide range. In some places, radio stations are legal where the signal is transmitted, but illegal where the signals are received—especially when the signals cross
4930-456: The most part are strangers takes getting used to. At the same time, there is an opportunity to meet people from a wide range of ethnic and cultural backgrounds. Recreational opportunities have improved aboard some U.S. ships, which may feature gyms and day rooms for watching movies, swapping sea stories , and other activities. And in some cases, especially tankers, it is made possible for a mariner to be accompanied by members of his family. However,
5015-679: The name of the city at or near which they were based. In the immediate post-war period, in 1947, a new long-wave radio transmitter, known as Deutschlandsender IV , was erected at Königs Wusterhausen. From 1 May 1949, the IV was dropped and the station became known as simply the Deutschlandsender programme of what was to become the Rundfunk der DDR broadcaster. The transmissions from the newly established German Democratic Republic (GDR) aimed at listeners in West Germany . The long-wave frequency used
5100-489: The new band had to begin from the ground floor. As a commercial venture, it remained a little-used audio enthusiasts' medium until the 1960s. The more prosperous AM stations, or their owners, acquired FM licenses and often broadcast the same programming on the FM station as on the AM station (" simulcasting "). The FCC limited this practice in the 1960s. By the 1980s, since almost all new radios included both AM and FM tuners, FM became
5185-443: The propulsion and other systems on board the vessel. Marine engineering staff also deal with the "hotel" facilities on board, notably the sewage , lighting, air conditioning and water systems. Engineering staff manages bulk fuel transfers, from a fuel-supply barge in port. When underway at sea, the second and third engineers will often be occupied with oil transfers from storage tanks, to active working tanks. Cleaning of oil purifiers
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#17327977296745270-455: The range of a given FM signal was much shorter; thus its market was more local than for AM radio. The reception range at night is the same as in the daytime. All FM broadcast transmissions are line-of-sight, and ionospheric bounce is not viable. The much larger bandwidths, compared to AM and SSB, are more susceptible to phase dispersion. Propagation speeds are fastest in the ionosphere at the lowest sideband frequency. The celerity difference between
5355-479: The reunified Germany. Radio broadcasting Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata , by radio waves to radio receivers belonging to a public audience . In terrestrial radio broadcasting the radio waves are broadcast by a land-based radio station , while in satellite radio the radio waves are broadcast by a satellite in Earth orbit. To receive
5440-475: The reverse direction because the plate was not heated, and thus not capable of thermionic emission of electrons. Later known as the Fleming valve , it could be used as a rectifier of alternating current, and as a radio wave detector . This greatly improved the crystal set , which rectified the radio signal using an early solid-state diode based on a crystal and a so-called cat's whisker . However, an amplifier
5525-410: The same service area. This prevents the sideband power generated by two stations from interfering with each other. Bob Carver created an AM stereo tuner employing notch filtering that demonstrated that an AM broadcast can meet or exceed the 15 kHz baseband bandwidth allotted to FM stations without objectionable interference. After several years, the tuner was discontinued. Bob Carver had left
5610-534: The station was moved to the top of the Westinghouse factory building in East Pittsburgh, Pennsylvania . Westinghouse relaunched the station as KDKA on November 2, 1920, as the first commercially licensed radio station in the United States. The commercial broadcasting designation came from the type of broadcast license ; advertisements did not air until years later. The first licensed broadcast in
5695-499: The steward department is during the execution of the fire and boat drill. Various types of staff officer positions may exist on board a ship, including junior assistant purser, senior assistant purser, purser , chief purser, medical doctor , professional nurse , marine physician assistant, and hospital corpsman . In the USA these jobs are considered administrative positions and are therefore regulated by Certificates of Registry issued by
5780-475: The successful operation of an ocean-going vessel. A ship's crew can generally be divided into four main categories: the deck department, the engineering department, the steward's department, and others. Officer positions in the deck department include but are not limited to: master and his chief , second and third officers. The official classifications for unlicensed members of the deck department are able seaman and ordinary seaman . With some variation,
5865-408: The time that AM broadcasting began in the 1920s, this provided adequate fidelity for existing microphones, 78 rpm recordings, and loudspeakers. The fidelity of sound equipment subsequently improved considerably, but the receivers did not. Reducing the bandwidth of the receivers reduces the cost of manufacturing and makes them less prone to interference. AM stations are never assigned adjacent channels in
5950-503: The visual arts. French pilot's assistant Paul Gauguin later became a leading post-impressionist painter and pioneered modern art's synthetist style. American seaman Haskell Wexler later won two Academy Awards , the latter for a biography of his shipmate Woody Guthrie . British Merchant Navy member Ken Russell later directed films such as Tommy , Altered States and The Lair of the White Worm . Merchant seaman Johnny Craig
6035-567: The world. Many stations broadcast on shortwave bands using AM technology that can be received over thousands of miles (especially at night). For example, the BBC , VOA , VOR , and Deutsche Welle have transmitted via shortwave to Africa and Asia. These broadcasts are very sensitive to atmospheric conditions and solar activity. Nielsen Audio , formerly known as Arbitron, the United States –based company that reports on radio audiences, defines
6120-544: The writers of Borat , A Hard Day's Night , and Cool Hand Luke were. A number of U.S. Merchant Mariners from World War II later played well known television characters. The list includes Milburn Drysdale on The Beverly Hillbillies , Archie Bunker on All in the Family , Peter Falk on Columbo , Jim Rockford on The Rockford Files , Steve McGarret on Hawaii Five-O , Uncle Jesse Duke on The Dukes of Hazzard and Cheyenne Bodie on Cheyenne . An ancient term,
6205-827: Was 185 kHz and the station also broadcast via short wave. In 1952 the GDR government began a programme of centralisation, which included concentrating all broadcasting in East Berlin , and built a new studio centre in the Oberschöneweide district, known as the Funkhaus Nalepastraße . In September 1952, the short-wave Deutschlandsender service was renamed "Berlin I" and given a political programming emphasis. The long-wave Deutschlandsender service became "Berlin II", with an emphasis on culture and society. Both changes were, however, soon abandoned. In August 1953,
6290-545: Was Muhammad Ali's assistant trainer and cornerman, and Joe Gold went on to make his fortune as the bodybuilding and fitness guru of Gold's Gym . Other sporting notables include Dutchman Henk de Velde known for sailing solo around the world, and Briton Matthew Webb who was the first person to swim the English Channel without the use of artificial aid. Irish Merchant Navy member Kevin McClory spent 14 days in
6375-669: Was already a working comic book artist before he joined up, but Ernie Schroeder would not start drawing comics until after returning home from World War II. Merchant sailors have also made a splash in the world of sport. In football, with Fred Blackburn in England and the likes of Dan Devine and Heisman Trophy winner Frank Sinkwich in the U.S. In track and field, American seamen Cornelius Johnson and Jim Thorpe both won Olympic medals, though Thorpe did not get his until 30 years after his death. Seamen Jim Bagby Jr. and Charlie Keller went on to Major League Baseball. Drew Bundini Brown
6460-530: Was amalgamated in 1922 and received a Royal Charter in 1926, making it the first national broadcaster in the world, followed by Czechoslovak Radio and other European broadcasters in 1923. Radio Argentina began regularly scheduled transmissions from the Teatro Coliseo in Buenos Aires on August 27, 1920, making its own priority claim. The station got its license on November 19, 1923. The delay
6545-683: Was an Ottoman admiral who dominated the Mediterranean for decades. He was born on the island of Lesbos/ Mytilini and died in Istanbul, the Ottoman capital. Merchant seamen have gone on to make their mark on the world in a number of interesting ways. Traian Băsescu , who started his career as a third mate in 1976 was the president of Romania from 2004 to 2014. Arthur Phillip joined the Merchant Navy in 1751 and 37 years later founded
6630-513: Was carrying audio by the next year. (Herrold's station eventually became KCBS ). In The Hague, the Netherlands, PCGG started broadcasting on November 6, 1919, making it arguably the first commercial broadcasting station. In 1916, Frank Conrad , an electrical engineer employed at the Westinghouse Electric Corporation , began broadcasting from his Wilkinsburg, Pennsylvania garage with the call letters 8XK. Later,
6715-624: Was convicted as a Nazi spy in World War II and Fritz Sauckel was convicted as a Nazi war criminal. Briton Duncan Scott-Ford was hanged for treachery in World War II. George Hennard was an American mass murderer who claimed 23 victims on a rampage at Luby's Cafeteria in Killeen, Texas . And Perry Smith's own murderous rampage was made famous in Truman Capote 's non-fiction novel In Cold Blood . Mariners are well represented in
6800-460: Was due to the lack of official Argentine licensing procedures before that date. This station continued regular broadcasting of entertainment, and cultural fare for several decades. Radio in education soon followed, and colleges across the U.S. began adding radio broadcasting courses to their curricula. Curry College in Milton, Massachusetts introduced one of the first broadcasting majors in 1932 when
6885-647: Was intended for German-speaking listeners outside the borders of the GDR - primarily for assembly workers and the GDR's seafarers , but also as a propaganda medium in "capitalist foreign countries". It had a high word content and offered political information, entertainment and culture. In 1989 the Peaceful Revolution in East Germany and the Fall of the Berlin Wall took place. In February 1990,
6970-537: Was quickly becoming viable. However, an early audio transmission that could be termed a broadcast may have occurred on Christmas Eve in 1906 by Reginald Fessenden , although this is disputed. While many early experimenters attempted to create systems similar to radiotelephone devices by which only two parties were meant to communicate, there were others who intended to transmit to larger audiences. Charles Herrold started broadcasting in California in 1909 and
7055-621: Was run by the Deutsche Welle GmbH , a commercial company – unconnected to today's similarly named international broadcaster – which had been set up by the Reichs-Rundfunk-Gesellschaft (RRG) network for nationally relaying programmes from Germany's nine regional broadcasting stations. Broadcasting on long wave (182 kHz) from what was then a central position in the German Reich ,
7140-494: Was still required. The triode (mercury-vapor filled with a control grid) was created on March 4, 1906, by the Austrian Robert von Lieben ; independently, on October 25, 1906, Lee De Forest patented his three-element Audion . It was not put to practical use until 1912 when its amplifying ability became recognized by researchers. By about 1920, valve technology had matured to the point where radio broadcasting
7225-615: Was to take over direct control of all broadcasting in Germany in the course of the Gleichschaltung process. A second transmitter, Deutschlandsender II , broadcasting from nearby Zeesen , had been opened on 20 December 1927. First the tarnsmitter broadcast with 60 kW, and later 100 kW. Also in Brandenburg, Deutschlandsender III , then with a height of 337 m (1,106 ft) the world's second largest structure after
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