Blosenbergturm
Encyclopedia
Beromünster
Beromünster is a municipality in the district of Sursee in the canton of Lucerne in Switzerland. On 1 January 2009 Gunzwil became part of Beromünster.-History:...
, Canton of Lucerne
Canton of Lucerne
Lucerne is a canton of Switzerland. It is located in the centre of Switzerland. The population of the canton is . , the population included 57,268 foreigners, or about 15.8% of the total population. The cantonal capital is Lucerne.-History:...
, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....
, built in 1937 for the German language
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....
radio
Radio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...
station DRS and radiating at an AM frequency
Frequency
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency...
of 531 kHz marking the bottom end of the official mediumwave broadcasting range. The Blosenbergturm has a height of 150 m and is a self-radiating tower insulated against ground, i.e. the entire tower structure is used as an antenna. It has a cabin at a height of 150 m, containing a coil for feeding the pinnacle, which is insulated against the rest of the tower, separately with high frequency power. By this cabin it has similar proportions as Fernsehturm Stuttgart
Fernsehturm Stuttgart
The Fernsehturm Stuttgart is the world's first TV tower built from concrete ....
. Originally the tower was used as dipole antenna, whereby the feeding point was in the cabin. There is a second 126 metre tall freestanding lattice tower nearby, which is as Blosenbergturm a tower radiator
Mast radiator
A mast radiator is a radio mast or tower in which the whole structure itself functions as an antenna. This design is commonly used for transmitting antennas operating at low frequencies, in the VLF, LF and MF ranges, in particular those used for AM broadcasting. The metal mast is electrically...
insulated against ground. This tower, which was built in 1931, carried until 1962 together with a second tower, which was dismantled and rebuilt in St. Chrischona
Swisscom-Sendeturm St. Chrischona
Swisscom-Sendeturm St. Chrischona is a communications tower built in 1980-1984 near Basel, Switzerland. It is located at near the St. Chrischona peak, on the territory of the municipality Bettingen, Basel-Stadt....
near Basel as TV transmission tower, a T-antenna for medium wave. After dismantling the second tower it was transformed in a tower radiator, which serves now as backup transmission for the Blosenbergturm.
The air traffic obstacle lights of Blosenbergturm have a special feature: at dawn a rotating beamer above the cabin is in service. This beamer, which is much less bright than
the beamers on Stuttgart TV Tower
Fernsehturm Stuttgart
The Fernsehturm Stuttgart is the world's first TV tower built from concrete ....
, is switched off at night and the red air-traffic obstacles warning lights are turned on. By watching the blinking lamp on the pinnacle of the tower, one can see if transmitter is working. It glows faint in the blink breaks while transmitter works as result of the high electric field at the top, when transmitter is working.
The Beromünster transmitter has been shut down on December 28, 2008, at midnight (CET), even though there were some protests against this measure.
External links
- Blosenbergturm on SkyscraperPage.com.
- technical data about the transmitter