Ravensburg-Horgenzell transmitter
   HOME

TheInfoList



OR:

Ravensburg-Horgenzell transmitter was a mediumwave broadcasting facility of
Deutsche Telekom Deutsche Telekom AG (; short form often just Telekom, DTAG or DT; stylised as ·T·) is a German telecommunications company that is headquartered in Bonn and is the largest telecommunications provider in Europe by revenue. Deutsche Telekom was ...
used for transmitting the program of
Deutschlandfunk Deutschlandfunk (DLF, ''Broadcast Germany'') is a public-broadcasting radio station in Germany, concentrating on news and current affairs. It is one of the four national radio channels produced by Deutschlandradio. History Broadcasting in the ...
on the area of community Horgenzell northwest of
Ravensburg Ravensburg ( Swabian: ''Raveschburg'') is a city in Upper Swabia in Southern Germany, capital of the district of Ravensburg, Baden-Württemberg. Ravensburg was first mentioned in 1088. In the Middle Ages, it was an Imperial Free City and an impo ...
in
Baden-Württemberg Baden-Württemberg (; ), commonly shortened to BW or BaWü, is a German state () in Southwest Germany, east of the Rhine, which forms the southern part of Germany's western border with France. With more than 11.07 million inhabitants across a ...
. It was inaugurated on August 23, 1951, and used until 1959 for transmitting the radio programme of
SWF SWF ( ) is an Adobe Flash file format used for multimedia, vector graphics and ActionScript.Open Screen Pr ...
with a transmission power of 40 kW on 1538 kHz. As antenna, it used a 120 metre tall guyed ground-fed lattice steel mast radiator at 47°47'10" N and 9°31'16" E. In 1964 after Bodenseesender took over its task, it was given from SWF to German Federal Post ( Deutsche Bundespost) and its frequency was changed to 755 kHz, in order to form a single frequency network with
Cremlingen transmitter The Cremlingen transmitter is a large mediumwave transmission facility established in 1962 for transmitting the programme of Deutschlandfunk on 756 kHz near Cremlingen-Abbenrode. It was also known as ''Sender Braunschweig'' or ''Sender König ...
near Brunswick in Lower Saxony. Because this frequency, which allowed a much better groundwave propagation, was also used by
Sottens transmitter The Sottens Transmitter is the nationwide transmitter for French-speaking Switzerland. The transmitter is located at Sottens, Canton of Vaud, Switzerland. It is run on 765 kHz with a power of 600 kilowatts and is easily receivable during the ...
in Switzerland, close to its 120 metre tall mast radiator, an 80 metre tall guyed reflector mast had to be built. In 1968 its transmission power was increased from 20 kW to 100 kW. To avoid jamming other stations, it had to be switched to 30 kW (or off) at night. This changed in the 1970s, when a new mast was built. The old mast was transformed into a reflector mast to allow the use of directional radiation. The waveplan of Geneva resulted in a frequency shift together with
Cremlingen transmitter The Cremlingen transmitter is a large mediumwave transmission facility established in 1962 for transmitting the programme of Deutschlandfunk on 756 kHz near Cremlingen-Abbenrode. It was also known as ''Sender Braunschweig'' or ''Sender König ...
to 756 kHz, while
Sottens transmitter The Sottens Transmitter is the nationwide transmitter for French-speaking Switzerland. The transmitter is located at Sottens, Canton of Vaud, Switzerland. It is run on 765 kHz with a power of 600 kilowatts and is easily receivable during the ...
got a new frequency. The radiation minimum toward Southwest was not required any more. However a new radiation minimum toward east-southeast in the direction of Timișoara in Romania, where a station on the same frequency works, was necessary according to the waveplan of Geneva. To achieve this, a new 120 metre tall ground-fed guyed lattice steel mast radiator was built northwestwards of the old 120 metre mast at 47°47'11 N and 9°31'12" E. After its completion, the new mast worked as radiator, while the old mast got a reflector. The old 80 metre tall reflector mast, which became obsolete, was dismantled. With this antenna configuration operation with 100 kW was possible 24 hours per day, at daytime with omnidirectional and at nighttime with directional radiation. Both masts were dismantled on January 24, 2018.Municipality Horgenzell
Demolition of the mediumwave transmitter Ravensburg
/ref>


Masts

The station uses as antenna two guyed mast radiators, situated at and . Both masts are 120 metres high and grounded. They were built in 1951 (eastern mast) and 1978 (western mast). Before 1964 the older mast was electrically divided into two parts by an intermediate insulator, still visible. The ladder on the mast at that spot runs outside. The older mast was guyed on three levels: the wires of the topmost guy were not divided by insulators, but by coils at the anchor points. The lower guys used insulators. The newer mast was guyed in two levels. All its guys were grounded via coils at the anchor points. File:Sendemast Ravensburg 22092013 1.JPG, Newer Mast of Ravensburg mediumwave transmitter File:Reflektormast Ravensburg 22092013 1.JPG, Older Mast of Ravensburg mediumwave transmitter File:Reflektormast Ravensburg 22092013 2.JPG, Site of now bridged intermediate insulator at older mast File:Abspannfundamente Reflektormast Horgenzell 31082013 1.JPG, Basements of anchor points of older mast File:Abspannfundamente Sendemast Horgenzell 31082013 1.JPG, Basements of anchor points of newer mast


References


External links

* *
Reflector mast of Ravensburg-Horgenzell transmitter
a
Skyscraperpage

Transmission mast of Ravensburg-Horgenzell transmitter
a
Skyscraperpage



Ravensburg-Horgenzell transmitter on Google Maps

Senderfotos.bw.de


{{coord, 47.78553, N, 9.51910, E, source:placeopedia, display=title Radio masts and towers in Germany Radio masts and towers in Europe Ravensburg (district) 1951 establishments in West Germany Towers completed in 1951 2018 disestablishments in Germany Buildings and structures demolished in 2018