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China is building a powerful radio antenna for communication with submarines

According to the researchers associated with the project, China has built a powerful radio antenna, covering more than 1,000 square miles in a secret location outside the country.

The radio antenna project was scrutinized because the International Agency for Research on Cancer believes that the types of waves emitted as part of the Wireless Electromagnetic Method (WEM) project, namely extremely low frequency radio waves (ELF), are considered "possibly carcinogenic to humans"

The South China newspaper, the Morning Post, reports that the first ELF facility in China, a 1,400-mile project, was finally completed in 13 years. The location of the radio antenna has not been disclosed, although the SCMP says that it is somewhere in the central part of Huazhong.

ELF waves have frequencies in the range from 30 to 3 Hz, which means that their wavelengths can be up to 10,000 and 100,000 kilometers, respectively. Due to the long wavelength, ELFs can transmit small bits of information to underwater crews at depths where sea water will interfere with other radio programs.

Russia, the United States and India were previously the only countries that are believed to have created ELF facilities for communication with submarines hiding at extraordinary depths. According to the 2001 report of the Federation of American Scientists, the US Navy ELF sites operate at 76 Hz.

ELF broadcast communication allows submarines to retain “a high degree of secrecy and flexibility in speed and depth, but have a low data transfer rate, unique to submarines and only for short submarines,” according to

"This facility will have important military applications in the event of a war," said Chen Xiaobin, a researcher from the Earthquake Administration in China, SCMP reported.

Regarding the secrecy of the project, Chen stressed that "although I am involved in the project, I have no idea where it is located," adding that "it should be launched by now."

Wenming Hu, party secretary of the state-owned Chinese shipbuilding industry corporation, visited the radio site last May, where he "expressed his appreciation for the construction of the WEM project and put forward opinions and requirements for subsequent project development and technical application in related areas," the company said.

The Chinese government claims that the WEM project will also be used to detect seismic events and search for minerals.

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