China Builds Massive Radio Antenna Facility to Communicate With Submarines
China's first ELF-emitting facility, a 1,400-mile project, was finally completed after 13 years, the South China Morning Post reports. The radio antenna facility's location hasn't been disclosed, though SCMP says it is somewhere in the central Huazhong region.
ELF waves have frequencies ranging from 30 to 3 Hz, meaning their wavelengths can be up to 10,000 and 100,000 kilometers long, respectively. Because of their great lengths, ELF waves are able to communicate small bits of information to submarine crews at depths where seawater would interfere with other radio transmissions.
Russia, the United States and India were previously the only countries believed to have established ELF facilities for communicating with submarines lurking at extraordinary depths. The US Navy's ELF sites operate at 76 Hz, according to a 2001 report by Federation of American Scientists.
The radio antenna project has come under scrutiny because the wave types emitted by the Wireless Electromagnetic Method (WEM) project, namely extremely low frequency (ELF) radio waves, are considered "possibly carcinogenic to humans" by the International Agency for Research on Cancer.
https://sputniknews.com/military/201812311071132855-china-builds-massive-radio-antenna-facility/
Think ELF on a shelf
get it…
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good