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VEF Spidola
VEF Spidola ( lv, VEF Spīdola, russian: ВЭФ Спидола) was the first mass production, mass-produced transistor radio with short wave band in the Soviet Union. It was manufactured by the VEF factory in Riga, Latvia, since 1962. A small series under the name "Spidola" (''Спидола'' ПМП-60) was manufactured since 1960. It was named after the fictional witch Spīdola from the Latvian epic poem. The word "spidola" was a Generic trademark, genericised trademark for "transistor radio" for a long time in Russian language, Russian (other synonyms included "transistor"). In many cases, the Spidola was used to listen to Western stations (such as the ''Voice of America, Radio Free Europe/Radio Liberty, BBC, Deutsche Welle''). The criminal prosecution of at least one Soviet dissident involved confiscation of the Spidola as an "instrument of crime," but without specifying the "crime" committed with the confiscated Spidola. Specifications First, "Spidola" was a ten-transi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Free Europe/Radio Liberty
Radio Free Europe/Radio Liberty (RFE/RL) is a United States government funded organization that broadcasts and reports news, information, and analysis to countries in Eastern Europe, Central Asia, Caucasus, and the Middle East where it says that "the free flow of information is either banned by government authorities or not fully developed". RFE/RL is a private, non-profit 501(c)(3) corporation supervised by the U.S. Agency for Global Media, an independent government agency overseeing all U.S. federal government international broadcasting services. Daisy Sindelar is the vice president and editor-in-chief of RFE. RFE/RL broadcasts in 27 languages to 23 countries. The organization has been headquartered in Prague, Czech Republic, since 1995, and has 21 local bureaus with over 500 core staff and 1,300 stringers and freelancers in countries throughout their broadcast region. In addition, it has 700 employees at its headquarters and corporate office in Washington, D.C. Radio Free E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Brands ...
Soviet Brands Brands A brand is a name, term, design, symbol or any other feature that distinguishes one seller's good or service from those of other sellers. Brands are used in business, marketing, and advertising for recognition and, importantly, to create an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science And Technology In The Soviet Union
Science and technology in the Soviet Union served as an important part of national politics, practices, and identity. From the time of Lenin until the dissolution of the USSR in the early 1990s, both science and technology were intimately linked to the ideology and practical functioning of the Soviet state, and were pursued along paths both similar and distinct from models in other countries. Many great scientists who worked in Imperial Russia, such as Konstantin Tsiolkovsky, continued work in the USSR and gave birth to Soviet science. The Soviet government made the development and advancement of science a national priority, emphasizing science at all levels of education and showering top scientists with honours. Very large numbers of engineers graduated every year. Soviet scientists won acclaim in several fields, marked by a highly developed pure science and innovation at the theoretical level, though interpretation and application fell short. They were at the cutting edge of sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economy Of Latvia
The economy of Latvia is an open economy in Eastern Europe and is part of the European Single Market. Latvia is a member of the World Trade Organization (WTO) since 1999, a member of the European Union since 2004, a member of the Eurozone since 2014 and a member of the OECD since 2016. Latvia is ranked the 14th in the world by the Ease of Doing Business Index prepared by the World Bank Group. According to the Human Development Report 2011, Latvia belongs to the group of very high human development countries. Due to its geographical location, transit services are highly developed, along with timber and wood processing, agriculture and food products, and manufacturing of machinery and electronic devices. Latvia's economy has had rapid GDP growth of more than 10% per year during 2006–07, but entered a severe recession in 2009 as a result of an unsustainable current account deficit, collapse of the real estate market, and large debt exposure amid the softening world economy. Trig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruble
The ruble (American English) or rouble (Commonwealth English) (; rus, рубль, p=rublʲ) is the currency unit of Belarus and Russia. Historically, it was the currency of the Russian Empire and of the Soviet Union. , currencies named ''ruble'' in circulation include the Belarusian ruble (BYN, Rbl) in Belarus and the Russian ruble (RUB, ₽) in Russia. Additionally, the Transnistrian ruble is used in Transnistria, an unrecognized breakaway province of Moldova. These currencies are subdivided into one hundred Kopek, kopeks. No kopek is currently formally subdivided, although denga, ''denga'' (½ kopek) and polushka, ''polushka'' (½ denga, thus ¼ kopek) were minted until the 19th century. Historically, the grivna, ruble and denga were used in Russia as measurements of weight. In 1704, as a result of monetary reforms by Peter the Great, the ruble became the first Decimalisation, decimal currency. The silver ruble was used until 1897 and the gold ruble was used until 1917. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D Battery
A D battery (D cell or IEC R20) is a standardized size of a dry cell. A D cell is cylindrical with an electrical contact at each end; the positive end has a nub or bump. D cells are typically used in high current drain applications, such as in large flashlights, radio receivers, and transmitters, and other devices that require an extended running time. A D cell may be either rechargeable or non-rechargeable. Its terminal voltage and capacity depend upon its cell chemistry. The National Carbon Company introduced the first D cell in 1898. Before smaller cells became more common, D cells were widely known as ''flashlight batteries.'' The U.S. military designation for this battery has been BA-30 since sometime before World War II. During World War II, it was designated the Type C battery by the U.S. Navy, leading to confusion with the smaller C cell battery (BA-42). In 2007, D batteries accounted for 8% of alkaline primary battery sales (numerically) in the US. In 2008, Swiss purc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 daytime, reception is usually limited to more local stations, though this is dependent on the signal conditions and quality of radio receiver used. Improved signal propagation at night allows the reception of much longer distance signals (within a range of about 2,000 km or 1,200 miles). This can cause increased interference because on most channels multiple transmitters operate simultaneously worldwide. In addition, amplitude modulation (AM) is often more prone to interference by various electronic devices, especially power supplies and computers. Strong transmitters cover larger areas than on the FM broadcast band but require more energy and longer antennas. Digital modes are possible but have not reached momentum yet. MW was the main radio ban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 early 20th century, when the radio spectrum was considered to consist of longwave (LW), medium-wave (MW), and short-wave (SW) radio bands. Most modern radio systems and devices use wavelengths which would then have been considered 'ultra-short'. In contemporary usage, the term ''longwave'' is not defined precisely, and its intended meaning varies. It may be used for radio wavelengths longer than 1,000 m i.e. frequencies up to 300 kilohertz (kHz), including the International Telecommunication Union's (ITU's) low frequency (LF, 30–300 kHz) and very low frequency (VLF, 3–30 kHz) bands. Sometimes the upper limit is taken to be higher than 300 kHz, but not above the start of the medium wave broadcast band at 520&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate Frequency
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done. Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required. It's easier to make sharply selective filters at lower fixed frequencies. There may be several such stages of intermediate frequency in a superheterodyne receiver; t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superheterodyne
A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. It was long believed to have been invented by US engineer Edwin Armstrong, but after some controversy the earliest patent for the invention is now credited to French radio engineer and radio manufacturer Lucien Lévy. Virtually all modern radio receivers use the superheterodyne principle; except those software-defined radios using ''direct sampling''. History Heterodyne Early Morse code radio broadcasts were produced using an alternator connected to a spark gap. The output signal was at a carrier frequency defined by the physical construction of the gap, modulated by the alternating current signal from the alternator. Since the output frequency of the alternator was generally in the audible range, this produces an audible a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chronicle Of Current Events
''A Chronicle of Current Events'' (russian: Хро́ника теку́щих собы́тий, ''Khronika tekushchikh sobytiy'') was one of the longest-running ''samizdat'' periodicals of the post-Stalin USSR. This unofficial newsletter reported violations of civil rights and judicial procedure by the Soviet government and responses to those violations by citizens across the Soviet Union. Appearing first in April 1968, it soon became the main voice of the Soviet human rights movement, inside the country and abroad. During the 15 years of its existence the ''Chronicle'' covered 424 political trials, in which 753 people were convicted. Not one of the accused was acquitted. In addition, 164 people were declared insane and sent for indefinite periods of compulsory treatment in psychiatric hospitals. In 1973 the novelist and literary critic Lydia Chukovskaya wrote Despite constant harassment by the Soviet authorities more than sixty issues of the ''Chronicle'' were compiled and publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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