Sender Donebach
| Donebach transmitter, Mast 2 | |
|---|---|
 Donebach Radio Masts |
|
| General information | |
| Status | Complete |
| Type | grounded upfed mast radiator |
| Location | Donebach, Baden-Württemberg, Germany |
| Coordinates | 49°33′43″N 9°10′28″E / 49.56194°N 9.17444°ECoordinates: 49°33′43″N 9°10′28″E / 49.56194°N 9.17444°E |
| Completed | 1982 |
| Height | 363 m (1,190.94 ft) |
| Design and construction | |
| Main contractor | Deutsche Bundespost |
The Sender Donebach is a 500-kilowatt longwave radio transmitter operating on 153 kHz and transmitting the program of German public broadcaster Deutschlandfunk. The facility, which is the property of Media Broadcast, was built between 1965 and 1967 on a former airfield and entered service on March 10, 1967.
As aerial was used in those days an omnidirectional aerial consisting of four 200 metre high radio masts, which were connected via wires on their tops. From these masts the mast in the middle was fed via radio power. This very efficient transmission aerial led to interferences of the Romanian transmitter Braşov, working on the same frequency and so only a power of 70 kilowatts instead of 250 kilowatts was possible. But even with these reduced power jammings of Braşov occurred, so 1972 the radio facility Donebach was rebuilt as a directional aerial with a minimum toward Braşov. Therefore two radio masts were demounted and the two others were rebuilt as umbrella aerials. Now a transmission power of 250 kilowatts was possible.
The Waveplan of Geneva in 1975 set now power limits to the transmitter Donebach and now there was a daytime operation with 500 kilowatts and a nighttime operation at nighttime. Therefore in 1982 two new transmission Remarkable at this facility is, that the frequency of the carrier is derived from a rubidium atomic clock, which is in the station building. It is as the carrier frequency of DCF77 a standard frequency.
Geographical coordinates of the masts
