The Mühlacker Broadcasting Transmission Facility is a radio transmission facility near Mühlacker, Germany, first put into service on November 21, 1930. It uses two guyed steel tube masts as aerials and one guyed steel framework mast, which are insulated against ground. It has two transmission aerials for shortwave and one free standing steel framework tower for directional radio services. The shortwave transmitter was shut off on October 19, 2004. The medium wave transmitter was switched off in January 2012.
Radio towers of Transmitter Mühlacker in September 2004 (from left to the right): Steel framework tower for directional radio, height: 93 m, built in 2004; reflector mast for medium wave with antennas for mobile phone services, height: 80 m, year of construction 1977; Main transmission mast for medium wave and FM, height: 273 m, built in 1950; reflector mast for medium wave, height: 130 m, built in 1954. Between the main transmission mast and the reflector mast there are the two small grey masts, which can be hardly seen in the picture and which carry the shortwave antenna
Descriptionedit
At time of inauguration in 1930 the transmitter, which had a power of 60 kW, used a T-type antenna spun between two 100 m high wooden lattice towers placed 310 m apart. As this antenna produced large amounts of skywave, the area of undistorted fading-free reception - was in spite of its high transmission power - at night not as large as planned and so it was planned to replace this antenna by an aerial with better skywave suppression. So in 1933–34, a 190 m high wooden tower - the tallest structure ever built of wood - was built, in which a vertical wire antenna, which was electrically enlengthened by a metal ring with 10.6 metres diameters on the top of the tower, was hung up. At this time transmission power was also increased from 60 kW to 100 kW. After inauguration of this antenna, the two original wooden towers were dismantled. One of them was rebuilt at Koblenz, the other at Frankfurt-Heiligenstock. In 1939/1940 a second 100 kW transmitter was installed. It used as antenna a system of 3 T-antennas, which were mounted on 3 50 metres tall guyed masts arranged in a triangle. In opposite to the first transmitter, it was including its aerial designed for a quick change of broadcasting frequency, which was done in case of air attacks in order to form a single frequency network with other transmitters, which hindered hostile aircraft using the signals for navigation purpose. On April 6, 1945, the wooden tower and the masts carrying the system of T-antennas were blown up by the SS to prevent its capture by the Allies in World War II.
Today, the most important aerial mast in Mühlacker is a 273 m high guyed steel tube mast with a diameter of 1.67 m, located at 48°56′31″N8°51′14″E / 48.94194°N 8.85389°E / 48.94194; 8.85389. This mast, which was built in 1950, is used as a transmitter for the mediumwave frequency 576 kHz and is therefore insulated against ground. It is designed as an antifading aerial and is therefore double-feedable and insulated. The mast is topped with a butterfly aerial for FM-broadcasting transmitters.
There are flight safety lamps near the ground end of the guy ropes, to make the span of the guy ropes more visible.
Two other radio masts, with heights of 130 m and 80 m, were located at the Mühlacker site.
The 130 m high mast, situated at 48°56′36″N8°51′21″E / 48.94333°N 8.85583°E / 48.94333; 8.85583, was a steel tube mast, insulated against ground. Before 1996, it was used as a director during nighttime and a spare during daytime. Transmission power was reduced to 100 kW in 1996 and the mast was obsolete and used only as a spare aerial. It was demolished in 2013.
The 80 m high radio mast, located at 48°56′29″N8°51′10″E / 48.94139°N 8.85278°E / 48.94139; 8.85278, is an insulated guyed steel framework mast with a triangular cross section. It was built in 1977 in order to improve transmission towards the south. It was also used to carry aerials for mobile phone services. It has been demolished.
The three masts are arranged in a nearly straight line on the site. A T-type aerial for shortwave transmission is fixed between two small guyed steel framework masts, but was shut down on October 19, 2004. It was later dismantled.
In 1948, a 110 m tall guyed steel framework mast was built on the site at 48°56′33″N8°51′2″E / 48.94250°N 8.85056°E / 48.94250; 8.85056 This served as a transmission aerial for the American Forces Network (AFN) until 1963. From 1963 until its demolition in November 1993, the mast was used as part of a directional aerial for a mediumwave transmitter. It also served as a spare FM transmitter with a butterfly aerial installed on top. The mast was demolished because it was in poor repair and was deemed no longer necessary. Plans for a new mast have not been realized.
Also located here at 48°56′30″N8°51′5″E / 48.94167°N 8.85139°E / 48.94167; 8.85139 was a 50 m steel framework mast insulated against ground. It was part of the directional aerial for the AFN transmitter described above. After 1963, it was only used as an aerial for the internal mobile radio service of the transmission facility. It was demolished in April, 2004 and replaced in the summer of 2004 with a 93 m high freestanding steel framework tower carrying aerials for directional services.
See alsoedit
Wikimedia Commons has media related to Mühlacker transmitter.
Video of the demolition of the 130m reflector mast
January 01, 1970
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The Muhlacker Broadcasting Transmission Facility is a radio transmission facility near Muhlacker Germany first put into service on November 21 1930 It uses two guyed steel tube masts as aerials and one guyed steel framework mast which are insulated against ground It has two transmission aerials for shortwave and one free standing steel framework tower for directional radio services The shortwave transmitter was shut off on October 19 2004 The medium wave transmitter was switched off in January 2012 Radio towers of Transmitter Muhlacker in September 2004 from left to the right Steel framework tower for directional radio height 93 m built in 2004 reflector mast for medium wave with antennas for mobile phone services height 80 m year of construction 1977 Main transmission mast for medium wave and FM height 273 m built in 1950 reflector mast for medium wave height 130 m built in 1954 Between the main transmission mast and the reflector mast there are the two small grey masts which can be hardly seen in the picture and which carry the shortwave antennaDescription editAt time of inauguration in 1930 the transmitter which had a power of 60 kW used a T type antenna spun between two 100 m high wooden lattice towers placed 310 m apart As this antenna produced large amounts of skywave the area of undistorted fading free reception was in spite of its high transmission power at night not as large as planned and so it was planned to replace this antenna by an aerial with better skywave suppression So in 1933 34 a 190 m high wooden tower the tallest structure ever built of wood was built in which a vertical wire antenna which was electrically enlengthened by a metal ring with 10 6 metres diameters on the top of the tower was hung up At this time transmission power was also increased from 60 kW to 100 kW After inauguration of this antenna the two original wooden towers were dismantled One of them was rebuilt at Koblenz the other at Frankfurt Heiligenstock In 1939 1940 a second 100 kW transmitter was installed It used as antenna a system of 3 T antennas which were mounted on 3 50 metres tall guyed masts arranged in a triangle In opposite to the first transmitter it was including its aerial designed for a quick change of broadcasting frequency which was done in case of air attacks in order to form a single frequency network with other transmitters which hindered hostile aircraft using the signals for navigation purpose On April 6 1945 the wooden tower and the masts carrying the system of T antennas were blown up by the SS to prevent its capture by the Allies in World War II Today the most important aerial mast in Muhlacker is a 273 m high guyed steel tube mast with a diameter of 1 67 m located at 48 56 31 N 8 51 14 E 48 94194 N 8 85389 E 48 94194 8 85389 This mast which was built in 1950 is used as a transmitter for the mediumwave frequency 576 kHz and is therefore insulated against ground It is designed as an antifading aerial and is therefore double feedable and insulated The mast is topped with a butterfly aerial for FM broadcasting transmitters There are flight safety lamps near the ground end of the guy ropes to make the span of the guy ropes more visible Two other radio masts with heights of 130 m and 80 m were located at the Muhlacker site The 130 m high mast situated at 48 56 36 N 8 51 21 E 48 94333 N 8 85583 E 48 94333 8 85583 was a steel tube mast insulated against ground Before 1996 it was used as a director during nighttime and a spare during daytime Transmission power was reduced to 100 kW in 1996 and the mast was obsolete and used only as a spare aerial It was demolished in 2013 The 80 m high radio mast located at 48 56 29 N 8 51 10 E 48 94139 N 8 85278 E 48 94139 8 85278 is an insulated guyed steel framework mast with a triangular cross section It was built in 1977 in order to improve transmission towards the south It was also used to carry aerials for mobile phone services It has been demolished The three masts are arranged in a nearly straight line on the site A T type aerial for shortwave transmission is fixed between two small guyed steel framework masts but was shut down on October 19 2004 It was later dismantled In 1948 a 110 m tall guyed steel framework mast was built on the site at 48 56 33 N 8 51 2 E 48 94250 N 8 85056 E 48 94250 8 85056 This served as a transmission aerial for the American Forces Network AFN until 1963 From 1963 until its demolition in November 1993 the mast was used as part of a directional aerial for a mediumwave transmitter It also served as a spare FM transmitter with a butterfly aerial installed on top The mast was demolished because it was in poor repair and was deemed no longer necessary Plans for a new mast have not been realized Also located here at 48 56 30 N 8 51 5 E 48 94167 N 8 85139 E 48 94167 8 85139 was a 50 m steel framework mast insulated against ground It was part of the directional aerial for the AFN transmitter described above After 1963 it was only used as an aerial for the internal mobile radio service of the transmission facility It was demolished in April 2004 and replaced in the summer of 2004 with a 93 m high freestanding steel framework tower carrying aerials for directional services See also edit nbsp Wikimedia Commons has media related to Muhlacker transmitter List of masts List of towersExternal links editMuhlacker Transmission Tower 1934 at Structurae Muhlacker AFN Radio Mast 1954 at Structurae Sendemast Muhlacker 1950 at Structurae Muhlacker Short wave Transmitters at Structurae Ausblendmast Muhlacker 1954 at Structurae Reflektormast Muhlacker 1977 at Structurae Muhlacker Directional Radio Transmittor 2004 at Structurae http www magischesauge de muehlacker chronik htm http www skyscraperpage com diagrams b40728 http www skyscraperpage com cities buildingID 40731 http www skyscraperpage com diagrams b28031 http www skyscraperpage com diagrams b62537 http www skyscraperpage com diagrams b40733 http www skyscraperpage com diagrams b47129 Satellite Picture Video of the demolition of the 130m reflector mast Retrieved from https en wikipedia org w index php title Muhlacker radio transmitter amp oldid 1222308370, wikipedia, wiki, book, books, library,
