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Originally posted by flexy123
There is a LOT to say to the hum...but...
People hear the "hum" not only in the states, it's a world-wide phenomenon. They sometimes hear the hum even if they move to another location, or when they are on vacation.
So no, it's not drilling or mobile antenna or similar.
It can be something external which creates some kind of physical reaction in the body, in other words...the sound is somehow created inside the body but it COULD be some external trigger. But its all speculation.