Nordkirchen transmitter

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Nordkirchen transmitter is a mediumwave broadcasting facility of Deutsche Telekom near Nordkirchen in Northrhine-Westphalia. It was built in 1979/80 after it was possible to recoordinate the mediumwave frequency 549 kHz for a location in Northrhine Westphalia at workout at waveplan of Geneva. Nordkirchen transmitter, which works on 549 kHz with a power of 100 kW, uses a directional antenna consisting of two groundfed guyed lattice steel masts 136 metres apart. Nordkirchen transmitter uses at day- and nighttimes directional radiation with a radiation minimum pointing toward Southwest. In direction of radiation minimum, the radiated power is only approximately a third of total radiated power. By this directional pattern disturbances of Wavre transmitter in Belgium, which works on the neighbour channel on 540 kHz are avoided. In 2004 a second mediumwave transmitter with a power of 5 kW for transmitting theprivately owned radio programme Truckradio was installed at Nordkirchen transmitter, which uses the same antenna as the transmitter of Deutschlandfunk. The usage of two masts allows directional radiation. This is in case of Nordkirchen transmitter necessary in order to avoid jamming transmitter Wavre working on the neighbour channel ( 540 kHz).