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General Information

Status: in use

Project Type

Structure: Cable-stayed tower
Function / usage: Long wave transmitter
Material: Steel tower or mast

Location

Location: , , ,
Coordinates: 46° 42' 46.08" N    1° 14' 43.01" E
Show coordinates on a map

Technical Information

Dimensions

height 350 m

Excerpt from Wikipedia

The HWU transmitter is a French facility for transmitting orders to submerged submarines of the French Navy. Situated near Rosnay at 46°42'47"N, 1°14'39"E, it is one of the largest radio transmitters in France and is clearly visible on satellite pictures. It uses an antenna carried by thirteen guyed masts (the tallest one 357 m, 6 of 310 m, 6 of 270 m), which are, together with the masts of the Allouis longwave transmitter, the tallest structures in France.

The HWU transmitter works on 18.3 kHz, 20.9 kHz and 21.7 kHz. Its transmissions can be easily received in Europe when the transmitters are active by using a PC soundcard connected to a receiving coil and FFT software. Although the signals are very easy to receive, it may be impossible to decipher them without knowing the cipher and key used in the communications.

Text imported from Wikipedia article "HWU transmitter" and modified on 23 July 2019 under the CC-BY-SA 3.0 license.

Participants

Currently there is no information available about persons or companies having participated in this project.

Relevant Web Sites

  • About this
    data sheet
  • Structure-ID
    20041227
  • Published on:
    13/12/2008
  • Last updated on:
    30/11/2018
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