China has thousands of km. Made the largest antenna to send a signal to a distant submarine

Beijing, Ta. 3
China has built the world's largest navy, larger than the United States, to dominate the seas. Now China has thousands of km. The world's largest antenna has been activated to signal a distant patrol submarine. The antenna is also being used to strengthen civilian communications with the military. The exact location of this antenna is not yet known, but it is believed to be somewhere in Debi Mountain, a protected natural reserve in Hubei, Anhui and Henan Province.
The activation of these antennas is expected to increase China's strength in the sea. The signal sent by this antenna travels thousands of km in land and water. Can go far. Seen from space, this antenna looks like a giant cross. These antennas appear to be made up of a network of cables and poles, similar to ordinary power lines. The length and width of this antenna is 100 km. Stated. The copper nodes at the ends of the lines are embedded deep into the thick granites. Two powerful underground transmitters are fitted to operate these antennas. If a transmitter malfunctions or becomes unusable, another transmitter can be used. This transmitter is capable of generating one megawatt of electrical current.
According to an article published in the Chinese Journal of Ship Research last month, devices mounted 200 meters (200 feet) below sea level can easily cover 1,200 km. (200 miles) away can receive signals from a huge antenna. With this Chinese antenna, the entire Korean islands, Japan, Taiwan and the South China Sea are covered in a range of 1500 km. This means that a Chinese submarine floating 200 meters below sea level can communicate through this antenna at a range of 1500 km.
Zhao Ming, chief engineer of the project at the Wuhan Maritime Communication Research Institute, and his colleagues said the facility would cover a distance of 3,000 km. Designed to maintain underwater contact over a full range of (1,200 miles). The signal was able to reach Guam, the largest U.S. military base in the western Pacific Ocean. These very low frequency (ELF) antennas can generate electromagnetic waves from 0.1 to 200 Hz. These radio waves can travel very far, both underwater and underground.
The biggest challenge facing China is to distinguish man-made signals from naturally occurring low-frequency background noise. China also conducted a joint experiment with Russia to see how far the signal could travel from the ground. In the meantime, a Russian station has to cover a distance of 2,000 km. A message was received from a distance, but due to the distance, the communication was one-sided and only an encrypted test message could be sent. But Chinese military researchers say smart devices such as submarines and submarine drones can obtain unilateral commands or act on the command's command of their target.