Roumoules radio transmitter
43.79116.1559Koordinaten: 43 ° 47 ' 28 " N, 6 ° 9' 21" E
The transmitter Roumoules is a transmitter for transmission in the long and medium waveband of Radio Monte Carlo near Roumoules in France. The transmitter installed there are among the most powerful in the world and can be received well at night throughout Europe.
Long-wave transmitter
The long-wave transmitter Roumoules, which became operational in 1974, operates on 216 kHz (up to 1988: 218 kHz) with a transmission power of 1400 kilowatts ( 2000 to 1976 kW). It consists of two parallel channels 1000 kilowatt, which are operated at 700 kW output power. A third 1000 kilowatt unit is present since 1983. Although this only serves as a reserve unit, it is possible for all three units in parallel, which would allow operation with a transmission power of 3000 kilowatts. The antenna uses long-wave transmitter Roumoules a directional antenna with a maximum which is in northwest direction (azimuth 309 °). It consists of three 300 meter high guyed, fußpunktgespeisten steel framework masts, which are isolated from the ground. As a reserve antenna a 330 meter high guyed steel lattice mast is available, which also represents an insulated against ground fußpunktgespeisten radiating transmitting mast. This mast allows only one omni-directional operation. The grounding system of the long-wave transmitter is 200 kilometers. It covers an area of 150 hectares. Since the area around the mast is used for agriculture, the grounding wires were installed to a depth of 80 centimeters.
Medium-wave transmitter
1987 was built with switchable polar pattern near a directional antenna for medium wave frequency 1467 kHz. It consists of five insulated against ground guyed lattice steel masts and allows directional radiation in the following directions:
The switch itself takes only 5 seconds. It is noteworthy that in addition to the mast foundations no Abstimmhäuser, as with most similar systems exist, but that the tuning elements are outdoors. Both the supply line of the medium as well as that of the long-wave transmitter are designed as line reuse. The medium-wave transmitter Roumules has an output power of 1000 kW. It is also used for transmitting the religious program of Trans World Radio. In contrast to the long-wave transmitter, which can be received well all day in southern France, northern Italy, in Switzerland and southern Germany, this broadcast is the day well received only within a radius of 100 kilometers Roumoules. However, its waves can travel at least the same distance as that of the long-wave transmitter because of its excellent skywave propagation.
Power supply
The transmitter Roumoules has a great power. This is provided by two transformers with a power of 5000 kW. The required energy is supplied by a 150 kV and a 220 kV line. This type of power supply, which seems greatly oversized ( comparable to a place of 5000 inhabitants with its own substation for 150 kV), provides a method of supplying power dar. Nevertheless, there is an emergency generator with 3300 horsepower ( 2460 kW) in Roumoules and the possibility of power supply from the medium-voltage network with 20kV.
Longwave masts of RMC
Insulator made of ceramic, which is at the mast base, which provides galvanic isolation with respect to the bottom ( Marconi antenna)
Self- induction coil at the base of the mast
Transformer system 225/20 kV, which ensures the supply of electricity