Object description

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 visible on satellite pictures although it is completely blurred out. It uses an antenna carried by thirteen guyed masts , which are, together with the masts of the Allouis longwave transmitter, the tallest structures in France.