Telecommunication tower Jakobsberg
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Telecommunication tower Jakobsberg
Radio transmission point Minden 2
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| Basic data | ||||
| Place: | Porta Westfalica | |||
| Country : | North Rhine-Westphalia | |||
| Country: | Germany | |||
| Altitude : | 235 m above sea level NHN | |||
| Coordinates: 52 ° 14 ′ 29.3 " N , 8 ° 56 ′ 12.2" E | ||||
| Use: | Telecommunication tower , radio transmitter , kiosk, observation tower | |||
| Accessibility: | Transmission tower open to the public | |||
| Owner : | German radio tower | |||
| Tower data | ||||
| Construction time : | 1974-1988 | |||
| Operating time: | since 1979 | |||
| Total height : | 142 m | |||
| Viewing platform: | 23 m | |||
| Data on the transmission system | ||||
| Last modification (transmitter) : | May 2006 | |||
| Waveband : | FM transmitter | |||
| Radio : | VHF broadcasting | |||
| Send types: | DVB-T2 HD , DAB , mobile radio , directional radio | |||
| Position map | ||||
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The Jakobsberg telecommunications tower (internal designation: radio transmission center Minden 2) stands at 235.2 m above sea level. NHN high Jakobsberg in the East Westphalian town of Porta Westfalica . The 142 meter high telecommunications tower belongs to the German radio tower (DFMG), a subsidiary of Deutsche Telekom based in Münster .
The tower was primarily a radio - relay station for long distance telephone network built and the television transmission network. In addition to facilities for mobile communications , it now houses several transmission systems for broadcasting public and private broadcasting . These include the radio in analog ( FM on Ultrakurzwelle / Band II ) and digital ( DAB + on band III ) technique as well as the television in the digital standard DVB-T2 HD on Band IV / V .
With its exposed location at the Weser breakthrough between the Wiehen and Weser mountains , the tower - next to the Kaiser Wilhelm monument - is characteristic of the silhouette of Porta Westfalica. The European long-distance hiking trail E11 runs on the crest of the mountain range .
history
The Bismarck Association erected a Bismarck Tower at this point in 1902 . In addition, a restaurant and a falconry were built near the tower , which did not survive the Second World War. The restaurant existed until the 1990s, when the high costs for the necessary drainage system made it uneconomical.
At the beginning of the 1950s, the then NWDR was in charge of developing the new medium of television . The Hamburg – Cologne transmission line required by the broadcasting company was planned and operated by the Deutsche Bundespost . This required a relay station between the two towers in Mellendorf north of Hanover and on the Hünenburg near Bielefeld. The Bundespost intended to use the Bismarck tower for this purpose, which, however, was structurally unsuitable for the installation of the newly developed FREDA radio relay equipment ( frequency- modulated decimeter wave system ) and horn antennas . The Bismarck Tower was demolished in 1952 and the property made available to the Bundespost, which had a standardized type tower built in the same year .
On April 1, 1953, the observation pulpit maintained by the Bismarck Federation was opened on the new radio tower. Like its successor, this telecommunications tower was already popularly known as the Langer Jakob . The tower, which could be reached by an asphalt road from Hausberge, attracted a lot of excursion traffic. Since it no longer met the increased technical requirements in the 1970s, it was decommissioned and demolished in 1979.
Today's telecommunications tower Jakobsberg was built from 1974 to 1978 and is a type tower "FMT 2/73" (telecommunications tower type 2 with modifications from 1973) of the Deutsche Bundespost. The topping-out ceremony took place on September 28, 1978. This tower also has a visitor platform, which is 23 meters high and is still operated by the Bismarck Association. Only the two telecommunications towers Bredstedt and Bungsberg in Schleswig-Holstein have a similar, publicly accessible platform.
From 1999, the amateur radio relay DB0MIN was installed on the Jakobsberg telecommunications tower . It transmitted in the 70 cm band on 439.375 MHz. The location was terminated in 2016 by the Association of Radio Amateurs in Telecommunications and Post and the system moved to Minderheide has continued to be operated as a Minden city relay since the end of 2017 .
tourism
The viewing platform of the television tower operated by the Bismarckbund at Porta Westfalica eV allows an unimpeded view of up to 50 km from April to October. At the foot of the tower is the Bismarck memorial room, in which exhibits show the eventful history of the tower and primarily remind of Otto von Bismarck . The adjoining kiosk has been back in operation since 2016.
Transmitters
In 1979 the tower was officially put into operation. In addition to the (analog) television broadcasting station, radio links to the Teutoburger Wald ( Bielstein ) station and the two towers in Mellendorf and on the Hünenburg near Bielefeld were operated. The analog television station was switched off on May 29, 2006 in the course of the introduction of the (then new) digital television standard DVB-T .
Today, in addition to the radio relay equipment, a total of six radio transmitters are installed on Jakobsberg : three for digital television in the current DVB-T2 HD standard, each with a bouquet of five television programs, one for digital radio DAB + (program package DR Germany with 13 programs) and in analog technology, transmitter for Radio Westfalica and BFBS Germany .
From the Wittekindsberg transmitter on the opposite side of the valley - the WDR calls it Bad Oeynhausen transmitter - the five WDR radio programs 1 Live , WDR 2 , WDR 3 , WDR 4 , WDR 5 , Deutschlandfunk and, in the digital standard DAB + das , are broadcast analogously Radio program package radio for NRW with a total of 13 programs broadcast.
Frequencies and Programs
Analog radio (VHF)
The following programs are broadcast from Jakobsberg:
|
Frequency (MHz) |
program | RDS PS | RDS PI |
ERP (kW) |
Antenna pattern round (ND) / directional (D) |
Polarization horizontal (H) / vertical (V) |
|---|---|---|---|---|---|---|
| 95.7 | Radio Westfalica | R_WESTF_ | DA9C | 0.5 | D. | H |
| 96.6 | BFBS Germany | BFBS_Ger | D390 | 0.03 | D. | H |
Digital radio ( DAB / DAB + )
Digital radio in the DAB + standard has been broadcast since September 1, 2013. The distribution of the nationwide multiplex takes place in a vertical polarization in single-frequency network ( Single Frequency Network ) with other stations.
Digital television ( DVB-T / DVB-T2 )
In Ostwestfalen-Lippe , the changeover to the DVB-T2 standard with HEVC picture coding took place on April 25, 2018. Optionally, additional programs included in the WDR offer and Freenet TV connect as a link can be played via an internet connection, if the receiving device HbbTV ( from version 1.5) supported (WDR via IP: ARD-alpha HD , BR FS Süd HD , hr-fernsehen HD , rbb Berlin HD and SR Fernsehen HD ). Freenet TV's paid private programming is broadcast from the Bielefeld (Hünenburg) and Hanover (Telemax) locations .
The following DVB-T2 bouquets are transmitted:
| channel |
Frequency (MHz) |
Multiplex | Programs in multiplex |
ERP (kW) |
Antenna diagram round (ND) / directional (D) |
Polarization horizontal (H) / vertical (V) |
SFN with |
|---|---|---|---|---|---|---|---|
| 26th | 514 | WDR Mux 2 | 5 | ND | H | Bielefeld (Hünenburg) , Minden (Jakobsberg) , Teutoburg Forest (Bielstein) | |
| 31 | 554 | WDR Mux 1 ( BI / SI) Note. | 5 | ND | H | Bielefeld (Hünenburg) , Minden (Jakobsberg) , Teutoburg Forest (Bielstein) | |
| 33 | 570 | Mixed multiplex from ZDF and freenet TV |
|
5 | ND | H | Bielefeld (Hünenburg) , Minden (Jakobsberg) , Teutoburg Forest (Bielstein) |
Send parameters
| Used by (HD Programs per Mux) | Modulation method |
Code rate | FFT mode | Guard interval |
Pilot tones | Data rate [Mbit / s] |
|---|---|---|---|---|---|---|
| ZDF (5) | 64-QAM | 3/5 | 16k extended | 19/128 | Pilot Pattern 2 | 22.0 |
| WDR Mux I (5) | 64-QAM | 1/2 | 16k extended | 19/256 | Pilot Pattern 2 | 19.5 |
| WDR Mux II (5) | 64-QAM | 1/2 | 16k extended | 19/128 | Pilot Pattern 2 | 18.2 |
Analog television ( PAL )
Before the switch to DVB-T on May 29, 2006, the broadcasting location was still used for analog television.
| channel |
Frequency (MHz) |
program |
ERP (kW) |
Transmission diagram round (ND) / directional (D) |
Polarization horizontal (H) / vertical (V) |
|---|---|---|---|---|---|
| 23 | 487.25 | VOX | 0.125 | D. | H |
| 26th | 511.25 | ZDF | 300 | D. | H |
| 54 | 735.25 | NDR television Lower Saxony | 20th | D. | H |
| 57 | 759.25 | WDR television Bielefeld | 300 | D. | H |
See also
- List of the television towers and transmission systems of the German radio tower
- List of known transmitters
- List of DAB stations in Germany
Individual evidence
- ↑ Topographical Information Management, Cologne District Government, Department GEObasis NRW ( Notes )
- ↑ The large radio link from north to south on fernsehmuseum.info, accessed on July 7, 2019
- ↑ Data from the homepage Senderfotos owl , accessed on September 4, 2012.
- ↑ History on db0min.de, accessed on July 7, 2019
- ^ City of Porta Westfalica: TV tower Porta Westfalica. Retrieved May 22, 2016 .
- ↑ Minden (Jakobsberg) on tvhelfer.de, accessed on July 7, 2019
- ↑ FM - the analog radio, station locations, frequencies and programs on wdr.de, accessed on July 11, 2019
- ↑ [1] PM Media Broadcast from August 26, 2013
Web links
- Telecommunication tower Jakobsberg. In: Structurae
- Bismarck Federation at Porta Westfalica e. V .: Jakobsberg TV tower - Porta Westfalica