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RE: 71 Percent Of Earth's Surface Is Water, Why Not Use It For Communications?
For what I understand, the water is not concealed. Not sure how much power you have to put in, but if this is more than normal antenna's, more power leaks. Cell tower power is relatively low. But for instance air radars do have so much power it will light a bulb and will do harm to human body; therefor these radars do only radiate into the air, not onto earth surface.
Did you watch the video?
Good point, I read the text only :)
There's even a photo of it next to a television :)