Sender Inselsberg

The transmitter Inselsberg is a transmitter for FM and digital TV on the Big Island in the Thuringian Forest with two transmission towers, which were built in 1939 and 1974. It is used as such only the transmission tower erected in 1974. The tower built in 1939 and no longer wears antenna. It is home to, among others, an exhibition on the development of telecommunications and radiocommunications; still he wears a solar system.

History

In 1937 began the German postal employees with technical trials around the Big Island mountain. This work lasted until 1938, an engineering firm with the construction of a transmission tower was already commissioned at the same time. On 15 April 1939 the cornerstone was laid and already at the outbreak of war in September 1939, this was structurally complete. On site, 200 technicians and workers in day and night shifts were in use. Built in 1939, the building is a 43 -meter-high free-standing cylindrical tower of reinforced concrete, which was used until the end of the war as a radio and monitoring center for military purposes. The site was cleared in April 1945 and stood for months without security, which led to looting. With the approval of the Russian military administration was on the 8th floor a branch of the German Weather Service, first approved as a provisional measurement and observation point.

After that, the tower served for some years as a lookout. In 1952, the repair work started by the Ministry of Post and Telecommunications of the GDR. Already in May 1953, a first, a powerful 250 Watt FM transmitter could be taken with a test program running on the fifth floor. To his care had a new water and a power line to the tower to be relocated. Also, two emergency generators received the transmitter to bridge blocking times and technical failures. Full service operation of the first Thuringian FM station began on 15 June 1953, the transmission frequency 94 MHz. In December 1953, the transmission power is increased by technical improvements to the system by 1 kilowatt, this enlarged the range. In December 1954, the television station was transported to the mountain.

Since 1955, extensive structural preparations were made ​​for the construction of a new antenna support in the attack. In the tower the coal heating was removed and installed an oil heater, now all broadcasting studios were equipped with air conditioning. On the edge of the site post a inconspicuous flat was built as a hotel with 18 residential units for operating and maintenance personnel.

From the GDR Council of Ministers to provide the transmitter part and the 126 m high antenna system for the second television program on the island mountain in 1967 approved. Coupled with a technical overhaul of transmission technology of the island mountain building project was estimated at 25.5 million East German marks.

From 1957 to In 1989, the tower, similar to the Gerbrandytoren, on its top a guyed to the ground 50 meters high antenna mast. The total amount thus was 93 meters. At the antenna mast different transmit antennas for radio and television were installed. Today, the antenna mast is removed, instead adorn only small antennas for mobile its peak. Because of its cylindrical shape of the tower carries the nickname "thermos ".

That in the gallery designated as the oldest tower object was only in the second half of the 1950s, in conjunction with the structure of the narrow-band radio relay network of the Central Committee of the SED, built. About him microwave links were established between the southern districts of the GDR and in the 1960s to the circuit lines of the party.

On August 15, 1972, the assembly and welding work started for the so-called block - design - the base frame of the new transmission tower. All other transmission tower parts were pushed from below, by means of four existing lifts into the air, the tip of the support tower first. This came as Nivelierhilfe a ruby laser used. On 28 November 1972, the antenna tower was structurally complete, after technical inspection, the Aluminium covering was installed. On 26 July 1974, the station started operating.

The new, built in 1974 Tower is a free standing 127 meters high steel tower, which stands on four feet. This tower, which is similar in construction to the about the same time built on the Brocken new transmission tower, now bears above its foot on three platforms directional antennas and in the upper part of its construction transmit antennas for FM radio and digital television ( DVB -T). The TV antennas are protected by sheaths made ​​of GRP.

In 1991, the Tilgerpendel in the spire of the transmission tower by means of the transport helicopter Mil Mi- 8 from Berlin Special Flight ( BSF ) has been replaced.

For the benefit of switching to DVB- T analog TV channels ARD (100 kW on channel 5) and MDR television set (500 kW on channel 31) on 1 July 2008.

The second tower ( built in 1939 ), still in operation for telecommunications

The operation of the transmitter building

View from Tabarz to the transmission facilities

Excerpt from the scheme of the radio relay network of the party

Range

The transmitter has an exposed island mountain high coverage topographic location on the northern edge of the Thuringian Forest. The coverage area ranges adjacent to the western and central Thuringia from the northern Baden- Württemberg over the entire northern Bavaria until after North Rhine-Westphalia. Even in parts of Hesse, Saxony, Saxony -Anhalt and Lower radiated from the Big Island mountain programs to be received. In the north the transmission area in Lower Saxony ends near Hanover.

The highest reach of frequency is due to lower interference from adjacent frequencies 90.2 MHz. They can hear from Hannover Halle / Leipzig, Saalfeld, northern franc and Frankfurt, and the central Hessian mountain country through the regular catchment area beyond.

Frequencies and programs

Analogue radio (FM )

The antenna pattern of the main beam directions are given in degrees in the case of directed radiation.

Digital radio ( DAB)

Since January 4, 2010 DAB runs in Thuringia as an island solution ( DAB channel 12B). Thus some transmitter sites have been shut down. On August 1, 2011, additional MDR radio programs have been posted on the ensemble. April 2, 2013, the DAB transmitter from the persisting Altnetz DAB channel 12B was taken out. It was the commissioning of the DAB channel 9C ( regional multiplex MDR ) and reduced transmission power in single-frequency operation with the transmitter Weimar ( Etter Mountain ). At the same time the old radio system for the transmission mode of the DAB channel 5C ( nationwide multiplex ) is used further. The currently existing transmitting antenna allows only one directional radiation in the direction west-north - east-southeast.

DAB is broadcast in vertical polarization and single-frequency operation with other transmitters.

  • Radio hit Paradise ( 72 kbps, DAB )
  • Absolute relax (72 kbps, DAB )
  • Sunshine live (72 kbps, DAB )
  • Germany Funk ( 128 kbps, DAB)
  • Germany radio culture (128 kbps, DAB)
  • DRadio knowledge (56 kbps, DAB )
  • Documents and Debates (40 kbps, DAB )
  • ENERGY ( 72 kbps, DAB )
  • Horeb (72 kbps, DAB )
  • Classic Radio (72 kbps, DAB )
  • LoungeFM (72 kbps, DAB )
  • RADIO BOB! (72 kbps, DAB )
  • Radio Horeb (48 kbps, DAB )
  • Baden- Württemberg Baden- Baden ( Fremersberg ), Freiburg ( Vogt Castle Totenkopf ), Geislingen ( Oberböhringen ), Heidelberg ( king chair), Heilbronn ( Pig Mountain ), Pforzheim ( Schomberg - Long Brand), Stuttgart ( Head of a Woman ), Ulm ( Cow Mountain )
  • Bavaria: Augsburg (Hotel Tower ), Nuremberg, Regensburg ( High Line ), Ingolstadt ( Gelbelsee ), Munich ( Olympic Tower ), Wendelstein ( Bavarian Zell), Würzburg ( Frankenwarte )
  • Berlin: Berlin ( Alexanderplatz), Berlin ( Scholzplatz )
  • Bremen: Bremen
  • Hamburg: Hamburg ( Moor Fleet ), Hamburg ( Heinrich- Hertz-Turm )
  • Hesse: Bad Hersfeld ( Rimberg ), Fulda ( Hummel head), Gelnhausen ( Schnepf head), casting ( Dünsberg ), Grosser Feldberg, Frankfurt ( Europe tower), Kassel ( Hawk Forest ), Mainz -Kastel
  • Mecklenburg- Vorpommern Schwerin ( Zippendorf - Gr.Dreesch )
  • Lower Saxony Braunschweig ( Broitzem ), Braunschweig ( Dragon Mountain ), Göttingen ( Bovenden - Osterberg ), Hanover ( Telemax ), Osnabrück ( Bramsche - Schleptruper Harrow ), Hildesheim ( Sibbesse / Griesberg )
  • North Rhine -Westphalia: Bielefeld ( Hünenburg ), Bonn ( Venusberg ), Dortmund ( Florian Tower ), Dusseldorf ( Rhine Tower ), Cologne ( Colonius ), Long Mountain, Minden (Jacob Berg)
  • Rhineland -Palatinate: Daun ( Eifel), Koblenz ( Kühkopf )
  • Saarland Saarbrücken ( Schoksberg )
  • Saxony: Schoeneck, Chemnitz ( Geyer ), Dresden, Leipzig ( Stadtwerke )
  • Saxony- Anhalt: Magdeburg ( Kapaunberg ), Halle ( Wallwitz -Peter Berg)
  • Schleswig -Holstein: Kiel ( Kronshagen )
  • Thuringia Gera, Island Mountain, Weimar ( Etter Mountain )
  • MDR Jump ( DAB , 88 kbps)
  • MDR Figaro (DAB , 88 kbps)
  • MDR Sputnik (DAB , 88 kbps)
  • MDR Info (DAB , 72 kbps)
  • MDR Klassik (DAB , 96 kbps)
  • MDR Klassik SURR (DAB , 128 kbps, some multichannel sound)
  • MDR Thüringen - The Radio ( Erfurt) (DAB , 88 kbps)
  • MDR Thüringen - The Radio ( Gera ) (DAB , 88 kbps)
  • MDR TPEG
  • MDR BWS
  • Germany Funk ( 128 kbps)
  • Germany radio culture (128 kbps)
  • DRadio knowledge (64 kbps, mono )
  • Documents and Debates (48 kbps, mono )
  • MDR Jump ( DAB , 88 kbps)
  • MDR Figaro (DAB , 88 kbps)
  • MDR Sputnik (DAB , 88 kbps)
  • MDR Info (DAB , 72 kbps)
  • MDR Klassik (DAB , 96 kbps)
  • MDR Thüringen - The Radio ( Erfurt) (DAB , 88 kbps)
  • MDR Thüringen - The Radio ( Gera ) (DAB , 88 kbps)
  • ERF Plus (DAB , 72kbps )

Digital TV (DVB -T)

The DVB-T broadcasts from the Middle German Radio on the Big Island mountain run since 1 July 2008 and are simulcast ( Single Frequency Network) with other transmitter sites.

  • The first one ( MDR)
  • ARTE
  • Phoenix
  • EinsFestival
  • MDR Fernsehen ( Thuringia)
  • Rbb Fernsehen (Brandenburg)
  • Bayerisches Fernsehen ( Swiss francs)
  • Hr- TV

Analog TV

Until the switchover to DVB - T following programs were broadcast in analog PAL:

In addition, the commissioning of the channel 48 was planned with an effective radiated power of 1 MW for a private channel, but this was never carried out.

Similar towers in this series

  • Chunk
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