Re:FCC opens entire 6 GHz band to low power device operations
by avidiax on Wednesday December 11, 2024 @03:05PM
(#42392233)
The sun is damaging because it contains ionizing radiation (radiation that is powerful enough to directly disassociate a molecule into ions). This is the UV portion of sunlight.
UV starts at 800,000 GHz.
The 6Ghz being discussed here is completely non-ionizing, not even comparable to UV.
The only concern with 6Ghz is that is can also cause dielectric heating, which is the same as a microwave. But again, at 25mW, you can't even feel the heat from direct contact with the antenna, let alone a few meters away. Your exposure follows the inverse-square law [1], which means that it drops proportional to the square of the distance. So if it's not a problem at 10cm, it's 100x less of a non-problem at 1m.
UV starts at 800,000 GHz.
The 6Ghz being discussed here is completely non-ionizing, not even comparable to UV.
The only concern with 6Ghz is that is can also cause dielectric heating, which is the same as a microwave. But again, at 25mW, you can't even feel the heat from direct contact with the antenna, let alone a few meters away. Your exposure follows the inverse-square law [1], which means that it drops proportional to the square of the distance. So if it's not a problem at 10cm, it's 100x less of a non-problem at 1m.
[1] https://en.wikipedia.org/wiki/Inverse-square_law