Transmitter of Langenberg

The transmitting Langenberg for Medium waves, waves ultracourtes and TV is since 1927 in the district Langenberg of Velbert, Rhineland-of-North-Westphalia. It is used by the West German Radiodiffusion for the transmission of some bouquets DVB-T, to 720 Khz, of a radio program local as well as radio BFBS with 1 and WDR-Hoerfunkprogrammen.
Les UKW-Program diffused by the installation can be received in the broad parts of Rhineland-of-North-Westphalia broad by 10 million people with a good quality. In this way, the Langen-mountain of UKW-Sender with the " range technique" highest is thus, the number of the possible people, in all Germany. Until the stop of the transmission at the end of 1993 the transmitter was a Langen-mountain on frequency 1593 Khz at the end higher of the sector of medium wave of also one of the transmitters than medium waves most projecting. Today, a reception on the medium wave is possible on 720 Khz in all Germany easily, however it is not any more one transmitter dominating in this frequential answer. The Bismarck-turn Langen-mountain is in the vicinity.

History

The transmitter of Langenberg tested an unusual interesting history since its starting in 1927. Until 1934, this transmitter as a person in charge of antenna used an T-Antenna with two 100 meters high against the ground isolated suspended turns from sending and worked with a performance of 60 kilowatts. In addition to the beginning of the Thirties, there were on different occasions attempts of the communist groups to exploit the conduit of modulation of the transmitter and thus to radiate a call to world Communism on the transmitter. A flag was suspended the night also in secrecy a red star on two lathes. In 1934, the power of emission was increased to reach 100 kilowatts and one replaced the two iron and steel turns by a tower of wood sending 160 height meters, in the medium of which the antenna was suspended. But this tower was not to have a long life.
Elle was destroyed the October 10th 1935 by a strong gale. As replacement an antenna of surface of triangle which was suspended to three with turns of wood framework 45 height meters, was built which finished in December 1935. In 1940-1941 those supplemented by 240 meters high against the ground to isolate a fattening from steel tube. The April 12th 1945 the installation of total antenna of the transmitter Langen-mountain of the German troops was made jump. After the Second world war, one attached by the British capacity of crew two antennas of surface of triangle, three 50 meters with the fattenings of tube of steel each one removed raised, one establishes. One of these appendices was removed in 1948, since in its place a transmitter of 160 isolated against the ground meters from high was built. With the other annexes, in 1949 two fattenings of a storm which became a third transmitter in a reorganized transmitter selbststrahlenden which provided until in 1957 its service, were destroyed. in 1949, still a second transmitter with 120 meters height was built, followed in 1952 a 210 height meters transmitter for O.m and TV. While the 120 height meters transmitter as transmitting for medium waves was insulated against the ground, the 210 the fattening of meter was connected to the ground. One strongly armed in the middle of the Sixties in the Langen-mountain with the transmitters with medium waves and on the practically free frequency 1586 Khz umgestimmt. That frequently allowed a reception in the USA during the hours of night. During this measurement transmitter the 120 meters height was tiny room on 95 meters height and subdivided by means of two insulators of separation. During the development of the plan of vague Genevese (1974/75), the wdr was to yield its frequency to exclusion 1586 Khz and MW-Sender on 1593 Khz umstimmen. Since this frequency was also used by other stations, in spite of the power of high emission of 800 kilowatts, occasionally of the problems of interference appeared during the night. With the compensation, West German broadcasting received the second frequency of medium wave 720 Khz which could be used however only in the company of day. Between 1988 and 1990, the 95 height meters MW-Sendemast and 210 meters O.m high and TV-Sendemast were replaced with fattening of removed steel framework connected to the ground raised by 301 meters with Reusenantenne for the medium wave in the lower part. At the end of 1993 MW-Sender for the frequency was stopped 1593 Khz, since it received PCB-haltige of elements. MW-Frequenz 720 Khz still remained in the company, could however be actuated only more tagsueber until Nachkoordinierung in 1995. In addition to this time, there was with two transmitters in the Langen-mountain: in 1948 to build with transmitter of 160 meters height for medium wave and 301 meters the transmitter raised for MW, O.m and TV. One was to cleanse more initially in 1996. With this work, an auxiliary cable tore unfortunately and thus fell him it on September 2nd, 1996. in 1995, of EMVU-Gruenden, the power of emission of the transmitters with medium waves in the Langen-mountain was to be radically reduced. If it were at the beginning of the Nineties still 1.000 kilowatts (800 kilowatts for 1593 Khz and 200 kilowatts for 720 Khz), more than 85 kilowatts were not allowed. After collapse, 160 of mast of meter this one was to even be reduced on 20 kilowatts. One projected already soon to replace the fattening eingestuerzten by a rebuilding in the form with fattenings of framework of steel connected to the ground removed with Reusenantenne for medium wave. Since for the operation of night of the frequency of medium wave 720 Khz (the frequency of medium wave 1593 Khz was delivered to radio operator Free Europe) are necessary to make disappear in a Western direction, one was to be built separately speisbar this Reusen. One began construction transmitters the medium 1999, but the completion was delayed because of a defective foundation the in July 2000. With the starting new of the transmitter, the power of emission of the medium wave 170 height meters again was increased to reach 85 kilowatts.

External bonds

http://fr.structurae.de/structures/data/index.cfm?ID=s0013328
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http://fr.structurae.de/structures/data/index.cfm?ID=s0011477

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