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Royal Naval Amateur Radio Society
The Royal Naval Amateur Radio Society (RNARS) is a specialised group or club for amateur radio amateur radio operator, operators who have a link with Sea, maritime employment, such as members of a navy, merchant marine or similar employment. As such, RNARS has become a ''wiktionary:de facto, de facto'' international group for such people. RNARS is well known for fostering amateur radio stations in museum ships. The best known in the UK is HMS Belfast, HMS ''Belfast''. RNARS is open to membership by people from "allied" nations. For instance, there are members in countries such as the United States and the Netherlands, and a semi-autonomous national group in Australia that has stations in three museum ships: HMAS Vampire (D11), HMAS ''Vampire'', HMAS Diamantina (1945), HMAS ''Diamantina'', and HMAS Castlemaine, HMAS ''Castlemaine''. RNARS offers several certificates for amateurs and shortwave Shortwave listening, listeners (SWLs) who make contacts or copy transmissions by RNARS m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amateur Radio
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. The term "amateur" is used to specify "a duly authorised person interested in radioelectric practice with a purely personal aim and without pecuniary interest;" (either direct monetary or other similar reward) and to differentiate it from commercial broadcasting, public safety (such as police and fire), or professional two-way radio services (such as maritime, aviation, taxis, etc.). The amateur radio service (''amateur service'' and '' amateur-satellite service'') is established by the International Telecommunication Union (ITU) through the Radio Regulations. National governments regulate technical and operational characteristics of transmissions and issue individual station licenses with a unique identifying call sign, which mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Netherlands , established_title2 = Act of Abjuration , established_date2 = 26 July 1581 , established_title3 = Peace of Münster , established_date3 = 30 January 1648 , established_title4 = Kingdom established , established_date4 = 16 March 1815 , established_title5 = Liberation Day (Netherlands), Liberation Day , established_date5 = 5 May 1945 , established_title6 = Charter for the Kingdom of the Netherlands, Kingdom Charter , established_date6 = 15 December 1954 , established_title7 = Dissolution of the Netherlands Antilles, Caribbean reorganisation , established_date7 = 10 October 2010 , official_languages = Dutch language, Dutch , languages_type = Regional languages , languages_sub = yes , languages = , languages2_type = Reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortwave Listening
Shortwave listening, or SWLing, is the hobby of listening to shortwave radio broadcasts located on frequencies 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) 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 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 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortwave
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 metres); above the medium frequency band (MF), to the bottom of the VHF band. Radio waves in the shortwave band can be reflected or refracted from a layer of electrically charged atoms in the atmosphere called the ionosphere. Therefore, short waves directed at an angle into the sky can be reflected back to Earth at great distances, beyond the horizon. This is called skywave or "skip" propagation. Thus shortwave radio can be used for communication over very long distances, in contrast to radio waves of higher frequency, which travel in straight lines (line-of-sight propagation) and are limited by the visual horizon, about 64 km (40 miles). Shortwave broadcasts of radio programs played an important role in the early days of radio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMAS Castlemaine
HMAS ''Castlemaine'' (J244/M244/A248), named for the city of Castlemaine, Victoria, was one of 60 ''Bathurst''-class corvettes constructed during World War II, and one of 36 initially crewed and commissioned solely by the Royal Australian Navy (RAN). Launched in 1941 and commissioned in 1942, ''Castlemaine'' operated during World War II in the waters of Australia, New Guinea, and Timor. She remained in service until 1945, when she was decommissioned into reserve and converted into an immobilised training ship. In 1973, ''Castlemaine'' was presented to the Maritime Trust of Australia for conversion to a museum ship. She is one of two surviving examples of the ''Bathurst'' class, the other being HMAS ''Whyalla''. Design and construction In 1938, the Australian Commonwealth Naval Board (ACNB) identified the need for a general purpose 'local defence vessel' capable of both anti-submarine and mine-warfare duties, while easy to construct and operate.Stevens, ''The Australian Corve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMAS Diamantina (1945)
HMAS ''Diamantina'' (K377/F377/A266/GOR266), named after the Diamantina River in Queensland, is a that served the Royal Australian Navy (RAN). Constructed in the mid-1940s, ''Diamantina'' was active from 1945 until 1946, was placed in reserve, then was recommissioned as a survey ship from 1959 until 1980. Following her second decommissioning, the frigate was preserved at the Queensland Maritime Museum as a museum ship. She was the last World War II-era frigate to leave RAN service, and of the 151 River-class frigates constructed for 19 navies worldwide, ''Diamantina'' is one of only two preserved as a museum ship. Design and construction ''Diamantina'' had a displacement of 2,120 tons fully loaded, or 1,420 standard displacement tons. She was equipped with two triple expansion engines driving twin screws at . She had a range of at , with a top speed of . She was armed with two single-mounted QF Mk.XVI guns fore and aft and eight single-mounted QF 20 mm Oerlikons, alt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMAS Vampire (D11)
HMAS ''Vampire'' was the third of three Australian-built Daring class destroyer (1949), ''Daring'' class destroyers serving in the Royal Australian Navy (RAN). One of the first all-welded ships built in Australia, she was constructed at Cockatoo Island Dockyard between 1952 and 1959, and was commissioned into the RAN a day after completion. ''Vampire'' was regularly deployed to South East Asia during her career: she was attached to the Far East Strategic Reserve on five occasions, including during the Indonesia-Malaysia Confrontation, and escorted the troop transport on six of the latter's twenty-five transport voyages to South Vietnam. In 1977, the destroyer was assigned to escort the Royal Yacht HMY Britannia, ''Britannia'' during Elizabeth II of the United Kingdom, Queen Elizabeth II and Prince Philip, Duke of Edinburgh, Prince Philip's visit to Australia. In 1980, ''Vampire'' was reclassified as a training ship. The warship remained in service until 1986, when she was d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amateur Radio Operator
An amateur radio operator is someone who uses equipment at an amateur radio station to engage in two-way personal communications with other amateur operators on radio frequencies assigned to the amateur radio service. Amateur radio operators have been granted an amateur radio license by a governmental regulatory authority after passing an examination on applicable regulations, electronics, radio theory, and radio operation. As a component of their license, amateur radio operators are assigned a call sign that they use to identify themselves during communication. About three million amateur radio operators are currently active worldwide. Amateur radio operators are also known as radio amateurs or hams. The term "ham" as a nickname for amateur radio operators originated in a pejorative usage (like "ham actor") by operators in commercial and professional radio communities, and dates to wired telegraphy. The word was subsequently adopted by amateur radio operators. Demographics {, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Belfast
} HMS ''Belfast'' is a Town-class light cruiser that was built for the Royal Navy. She is now permanently moored as a museum ship on the River Thames in London and is operated by the Imperial War Museum. Construction of ''Belfast'', the first ship in the Royal Navy to be named after the capital city of Northern Ireland and one of ten Town-class cruisers, began in December 1936. She was launched on St Patrick's Day 1938. Commissioned in early August 1939 shortly before the outbreak of the Second World War, ''Belfast'' was initially part of the British naval blockade against Germany. In November 1939, ''Belfast'' struck a German mine and, in spite of fears that she would be scrapped, spent more than two years undergoing extensive repairs. ''Belfast'' returned to action in November 1942 with improved firepower, radar equipment, and armour. ''Belfast'' saw action escorting Arctic convoys to the Soviet Union during 1943 and in December 1943 played an important role in the Battle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Ship
A museum ship, also called a memorial ship, is a ship that has been preserved and converted into a museum open to the public for educational or memorial purposes. Some are also used for training and recruitment purposes, mostly for the small number of museum ships that are still operational and thus capable of regular movement. Several hundred museum ships are kept around the world, with around 175 of them organised in the Historic Naval Ships AssociationAbout The Historic Naval Ships Association (the international website. Accessed 2008-06-06.) though many are not naval museum ships, from general merchant ships to [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
