Broadcasting station long mountain

broadcasting station long mountain

of the broadcasting stations long mountain for medium wave, UKW and TV is since 1927 in the quarter long mountain of Velbert, North Rhine-Westphalia.

It is operated by the West German broadcast and used for the radiant emittance of some DVB T Bouquets, the medium wave frequency 720 kHz, a local radio program as well as by BFBS radio 1 and all WDR radio broadcasting programs. The UKW programs radiated from the plant are to be received thereby in far parts of North Rhine-Westphalia from far over 10 million humans in good quality. Thus is long mountain of the UKW transmitters with the highest “technical range”, thus the number of attainable persons, in completely Germany.

Up to the suspension of service at the end of of 1993 was the transmitter long mountain on the frequency 1593 kHz at the upper end of the medium-wave band also one of the most salient medium-wave transmitters. Today a receipt on medium wave is at night possible on 720 kHz in completely Germany easily, however it is no more dominating transmitter in this frequency range.

In the proximity is the Bismarck tower.

history

of the transmitters long mountain experienced an unusual changeful history since its start-up 1927. Until 1934 this transmitter used an T-antenna, hung up to two 100 meters high transmitting towers isolated against earth , as radio tower and worked with an output of 60 kilowatts. At the beginning of the 30's there were several times attempts of communist groups to tap the modulation line of the transmitter and to thus radiate over the transmitter a call to world communism. An at night also secretly a red star on one of the two towers was hung up.

1934 were increased the transmitting power to 100 kilowatts and the two steel towers by a 160 meter to high wood transmitting tower, in whose center the antenna was hung up, was replaced. But this tower should not have long life. It became to 10. October 1935 by wind trousers destroys. As replacement a triangle plane aerial, which was hung up to three 45 meters high wood framework towers, was established, which became finished in December 1935.

1940/41 were supplemented this Stahlrohrmast isolated high by a 240 meter against earth. To 12. April 1945 was blown up the entire antenna system of the transmitter long mountain by the German troops.

After the Second World War by British crew power two triangle plane aerials, which to three 50 meters each high removed Stahlrohrmasten were fastened, one established. One of these plants was diminished 1948, since in its place a 160 meter high transmitting pole isolated against earth was established. With the other plant 1949 two masts were destroyed by a storm, which became third transmitting pole into a radiating transmitting pole converted, which provided its service to 1957. 1949 were built still another second transmitting pole with 120 meters height, which 1952 a 210 meter high transmitting pole for UKW and TV followed. While the 120 meters high transmitting pole was isolated against earth as transmitting pole for medium wave, the 210 meter mast was grounded.

Center of the 60's was strongly rigged in long mountain of the medium-wave transmitters and umgestimmt on the practically free frequency 1586 kHz. This made possible during the night hours frequently a receipt into the USA. In the course of this measure the 120 meters high transmitting pole was reduced to 95 meters height and partitioned by means of two Trennisolatoren.

In the course to the elaboration up Geneva wave plan (1974/75) the WDR had to give its exclusive frequency 1586 kHz and umstimmen the MW-transmitter on 1593 kHz. Since this frequency was used also by other stations, at night occasionally interference problems arose despite the high transmitting power of 800 kilowatts. To reconciliation the West German broadcast received the second medium wave frequency 720 kHz, which could be used however only in the day enterprise. Between 1988 and 1990 the 95 meters high MW-transmitting pole and the 210 meters high UKW and TV-transmitting pole were replaced to high grounded removed steel framework mast by a 301 meter with a prism aerial for the medium wave in the lower part. At the end of of 1993 was shut down the MW-transmitter for the frequency 1593 kHz, since he received PCB haltige construction units. The MW-frequency 720 kHz remained further in enterprise, could be operated however up to a Nachkoordinierung 1995 only during the day. At this time there were two transmitting poles in long mountain: the 1948 160 meters established to high transmitting pole for medium wave and the 301 meters high transmitting pole for MW, UKW and TV. First had to be reorganized 1996. Unfortunately a Hilfsseil tore and in such a way fell it to 2 with these work. September 1996 .

1995 had to be drastically reduced for EMVU reasons the transmitting power of the medium-wave transmitters in long mountain. If there was at the beginning of the 90's still 1,000 kilowatts (800 kilowatts for 1593 kHz and 200 kilowatts for 720 kHz), then only 85 kilowatts were permissible. After the collapse 160 of the meter mast this had to be reduced even to 20 kilowatts.

Already soon after one planned replacing the collapsed mast by a reconstruction in form to removed grounded steel framework masts with a prism aerial for medium wave. Since for the night enterprise of the medium wave frequency 720 kHz (the medium wave frequency 1593 kHz was transferred to radio Free Europe) a fading out is westward necessary, one of these staggered arrays had to be built separately feedable. With the building transmitting poles in the middle of was begun 1999, but retarded the completion because of an incorrect foundation into July 2000. With the start-up of the new 170 meters high transmission mast the transmitting power of the medium wave was increased 85 kilowatts.

Web on the left of


coordinates: 51° 21 ' 19 " N, 07° 08 ' 08 " O

 

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