If you read the article, China claims it's for earthquakes and mineral detection. Others claim it's for submarine communication. But look at the waves they are using (ELF), what if it's more for mind control?
Has any one used, or recommend a HD tv antenna? One of those flat shaped ones. Some come with a usb plug to amplify the signal also. I think the Mohu Leaf was a popular one. But now Amazon has so many knockoffs.