I have heard about the place in Virginia with very low radio emissions from earthly, man-made radio energy. It's not for the benefit of those who think any man made RF energy is harmful, no matter how minuscule it is. it is because there are very sensitive radio telescopes placed there as scientists scan the sky for very weak signals from space. So. the less man-made noise/interferrence, the better.
Our man made radio signals are at the very bottom of harmful radiation that ranks as insignificant. , and the most harmful is a gamma ray burst from exploding neutron stars and such that can focus a death star beam of energy that can blast a heavenly body from existence if directly in the path of The beam. We never want one of those to even be many light years from our galaxy. or we could all be toast, instantly.
The point is, there are degrees of harmfulness, and our home electronics man made RF energy is not even close. (Nevertheless, never put a little dog in a microwave oven to dry it; too much concentrated RF energy!)