Ravensburg mediumwave transmitter
The transmitter Ravensburg is a broadcasting transmitter for medium wave, the Media Broadcast to broadcast the Radio Germany in the district of Ravensburg in Baden- Württemberg operates. It is located half a mile north-east of Wilhelm Kirch, in the municipality of Horgenzell, at an altitude of 581 m above sea level. NN and is not to be confused with the television Ravensburg on the nearby mountain Supreme.
The plant was put into operation on 23 August 1951, was until 1964 the then South-West radio, which broadcast there on the frequency 1538 kHz ( from 1962 to 665 kHz) his first radio program with a transmitter power of 20 kW. Along with the Bad Durrheim and Reutlingen formed the transmitter simulcast network.
On September 30, 1962, the Southwest Radio for the then German Federal Post Office (now the German Telekom ) another station took to the spread of Germany broadcasting on the frequency 755 kHz with a transmitter power of 20 kW. Both programs were broadcast by means of a switch on the same antenna system. After the completion of the new station at Lake Constance Meßkirch in 1964 Südwestfunk ceased its broadcasting on the Ravensburg site and handed over the system to the German Federal Post Office. In 1968, the transmission power of the Germany radio was increased to 100 kW. Since strong suppressions would have been required by this power increase at night, the transmitter was turned off during the night hours. Since the entry into force of the Geneva wave plan in 1978, which had a frequency adjustment on 756 kHz result, the system sends back in continuous operation in the amplitude modulation (AM). The system is suitable for digital signals for Digital Radio Mondiale (DRM) transmission, but has been running since 1999, only in the mode Dynamic Amplitude Modulation ( DAM).
The antenna today, two insulated from earth, self-radiating transmission towers of height 120 meters are used, which were built in 1951 and 1978. The geographical coordinates of the two transmitter masts be 47 ° 47 ' 8 " N, 9 ° 31 ' 6" O47.7855833333339.5184166666667 and 47 ° 47 ' 8 " N, 9 ° 31 ' 11 " O47.7854166666679.5197222222222.
Aerial view of Wilhelmskirch with the transmitter Ravensburg
Level diagram of the transmission towers of the LW and MW stations of the DLF