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Stara Zagora Transmitter
The Stara Zagora Transmitter was a high power mediumwave broadcasting station near Stara Zagora in Bulgaria. It had at least 3 guyed masts. One of these masts was a Blaw-Knox Tower. It was one of the few Blaw-Knox towers in Europe, along with similar masts at Vakarel, Bulgaria, at Riga, Latvia, Lakihegy, Hungary and Lisnagarvey, Northern Ireland. The transmitter was shut down on April 7, 2013. The masts were dismantled and scrapped in November 2014. See also * List of tallest structures in Bulgaria An incomplete list of the tallest structures in Bulgaria. This list contains all types of structures. See also *List of tallest buildings in Sofia *List of tallest buildings in Bulgaria *List of tallest buildings in Europe *List of tallest bu ... External links Pictures and description in Bulgarian Towers in Bulgaria Buildings and structures in Stara Zagora {{bulgaria-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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] |
Stara Zagora
Stara Zagora ( bg, Стара Загора, ) is the sixth-largest city in Bulgaria, and the administrative capital of the homonymous Stara Zagora Province. Name The name comes from the Slavic root ''star'' ("old") and the name of the medieval region of Zagore ("beyond the alkanmountains" in Slavic) The original name was Beroe, which was changed to Ulpia Augusta Traiana by the Romans. From the 6th century the city was called Vereja and, from 784, Irenopolis (Greek: Ειρηνούπολις) in honour of the Byzantine empress Irene of Athens. In the Middle Ages it was called Boruj by the Bulgarians and later, Železnik. The Turks called it Eski Hisar (old fort) and Eski Zagra, from which its current name derives, assigned in 1871. History The original Thracian settlement dates from the 5-4th century BC when it was called Beroe or Beroia. The city was founded by Philip II of Macedon in 342 BC. Under the Roman Empire, the city was renamed ''Ulpia Augusta Traiana'' in hon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgaria
Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. Bulgaria covers a territory of , and is the sixteenth-largest country in Europe. Sofia is the nation's capital and largest city; other major cities are Plovdiv, Varna and Burgas. One of the earliest societies in the lands of modern-day Bulgaria was the Neolithic Karanovo culture, which dates back to 6,500 BC. In the 6th to 3rd century BC the region was a battleground for ancient Thracians, Persians, Celts and Macedonians; stability came when the Roman Empire conquered the region in AD 45. After the Roman state splintered, tribal invasions in the region resumed. Around the 6th century, these territories were settled by the early Slavs. The Bulgars, led by Asp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blaw-Knox Tower
The Blaw-Knox company was an American manufacturer of steel structures and construction equipment based in Pittsburgh, Pennsylvania. The company is today best known for its radio towers, most of which were constructed during the 1930s in the United States. Although Blaw-Knox built many kinds of towers, the term Blaw-Knox tower (or radiator) usually refers to the company's unusual "diamond cantilever" design, which is stabilized by guy wires attached only at the vertical center of the mast, where its cross-section is widest. During the 1930s AM radio broadcasting stations adopted single mast radiator antennas, and the Blaw-Knox design was the first type used. A 1942 advertisement claims that 70% of all radio towers in the United States at the time were built by Blaw-Knox. The distinctive diamond-shaped towers became an icon of early radio. Several are listed on the United States National Register of Historic Places, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 and it is located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. Comprising the westernmost peninsulas of Eurasia, it shares the continental landmass of Afro-Eurasia with both Africa and Asia. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south and Asia to the east. Europe is commonly considered to be Boundaries between the continents of Earth#Asia and Europe, separated from Asia by the drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the waterways of the Turkish Straits. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vakarel Transmitter
The Vakarel Transmitter was a large broadcasting facility for long- and medium wave near Vakarel, Bulgaria. The Vakarel Transmitter was inaugurated in 1937. It had one directional antenna consisting of three guyed masts and another consisting of two masts. The most remarkable mast of the Vakarel Transmitter was the Blaw-Knox tower, built in 1937 by the company Telefunken. Along with Lakihegy Tower, Hungary, Riga LVRTC Transmitter, Latvia and Lisnagarvey Radio Mast, Northern Ireland it was one of the few Blaw-Knox towers in Europe until its demolition on 16 September 2020. The transmitter was shut down at 22:00 UTC on 31 December 2014. Transmitter internal structure The modulation method used by the transmitter in Vakarel is called a tube voltage modulation and was successfully used in all powerful AM transmitters at that time. The Vakarel transmitter is supplied with electricity from a substation in Samokov via a medium voltage transmission line. The transmitter uses six stag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riga LVRTC Transmitter
The Riga LVRTC Transmitter was a mediumwave transmitter in Ulbroka near Riga, Latvia, which broadcast on 945 kHz a music program in Digital Radio Mondiale, DRM-simulcast mode, which was receivable at night time in wide parts of Europe. It used as an antenna two guyed mast radiators. One of them was a guyed lattice mast. The other smaller tower stays a Blaw-Knox Radiator. It is one of the few existing Blaw-Knox Radiators in Europe. Other towers of this type exist at Lisnagarvey transmitting station, Lisnagarvey, Northern Ireland, Lakihegy Tower, Lakihegy, Hungary, Vakarel Transmitter, Vakarel, Bulgaria and Stara Zagora Transmitter, Stara Zagora, Bulgaria. Several masts were razed on 16 May 2010. References External links * http://www.lvrtc.lv/tehres/popup.php?id=3 Towers in Latvia Radio masts and towers in Europe Buildings and structures in Riga {{Europe-mast-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latvia
Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of Northern Europe. It is one of the Baltic states; and is bordered by Estonia to the north, Lithuania to the south, Russia to the east, Belarus to the southeast, and shares a maritime border with Sweden to the west. Latvia covers an area of , with a population of 1.9 million. The country has a temperate seasonal climate. Its capital and largest city is Riga. Latvians belong to the ethno-linguistic group of the Balts; and speak Latvian, one of the only two surviving Baltic languages. Russians are the most prominent minority in the country, at almost a quarter of the population. After centuries of Teutonic, Swedish, Polish-Lithuanian and Russian rule, which was mainly executed by the local Baltic German aristocracy, the independent R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakihegy Tower
The Lakihegy Tower is a 314-metre-high (1,031 ft) radio mast at Szigetszentmiklós-Lakihegy in Hungary. The Blaw-Knox type tower was built in 1933 and was one of Europe's tallest structures at the time of construction. It was designed to provide broadcast coverage for Hungary with a 120 kW transmitter. It was built for the purpose of transmitting the radio station " Budapest I.", which it served until 1977. Developed in the U.S., the diamond-shaped mast was specially designed to radiate radio waves in such a way that reduce fading. Thus it was able to serve the whole country. The mast was destroyed by retreating German troops in World War II, but was later rebuilt in 1946. In 1968 the tower was upgraded to serve the new 300 kW transmitter (amongst others, the ceramic base insulator had to be replaced to withstand the higher voltages). In 1977 the new 2 MW transmitter at Solt has replaced the Lakihegy Tower as the primary national transmitter. Subsequently, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hungary
Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and Slovenia to the southwest, and Austria to the west. Hungary has a population of nearly 9 million, mostly ethnic Hungarians and a significant Romani minority. Hungarian, the official language, is the world's most widely spoken Uralic language and among the few non-Indo-European languages widely spoken in Europe. Budapest is the country's capital and largest city; other major urban areas include Debrecen, Szeged, Miskolc, Pécs, and Győr. The territory of present-day Hungary has for centuries been a crossroads for various peoples, including Celts, Romans, Germanic tribes, Huns, West Slavs and the Avars. The foundation of the Hungarian state was established in the late 9th century AD with the conquest of the Carpathian Basin by Hungar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisnagarvey Transmitting Station
The Lisnagarvey transmitting station is a facility for mediumwave broadcasting located in the townland of Magherageery, on the southern edge of Lisburn, Northern Ireland (). It is close to Sprucefield shopping centre and about one mile from the middle of Lisburn. The station was built by the BBC for the Regional Programme to be transmitted to Northern Ireland and it went into service in 1936. It is now owned by Arqiva. During World War II, a 100 kW shortwave transmitter (Marconi model SWB18) was installed at the station as an alternative to the well-known one at Daventry in England, in case that one should suffer from an enemy attack. It transmitted on 6140 or 6145 kHz, and used the call sign GRW. The shortwave transmitter was taken out of service on 26 May 1946 and was later redeployed at thBBC Far Eastern Relay stationat Tebrau, Malaya in January 1951. The station includes three radio masts, including two standard lattice masts and one Blaw-Knox diamond cantile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Ireland
Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Northern Ireland shares an open border to the south and west with the Republic of Ireland. In 2021, its population was 1,903,100, making up about 27% of Ireland's population and about 3% of the UK's population. The Northern Ireland Assembly (colloquially referred to as Stormont after its location), established by the Northern Ireland Act 1998, holds responsibility for a range of devolved policy matters, while other areas are reserved for the UK Government. Northern Ireland cooperates with the Republic of Ireland in several areas. Northern Ireland was created in May 1921, when Ireland was partitioned by the Government of Ireland Act 1920, creating a devolved government for the six northeastern counties. As was intended, Northern Ireland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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