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The power levels are low to begin with, so heating up the air is hard to even measure, let alone notice. It's why 60GHz is license free and used for WiGig, wir
by RF_Savage 5y ago
The power levels are low to begin with, so heating up the air is hard to even measure, let alone notice.
It's why 60GHz is license free and used for WiGig, wireless HDMI and short haul microwave links like the ones from Mikrotik.
The heavy oxygen attenuation makes it commercially worthless.
Same reason why there's a license free band on 24GHz too.
24GHz suffers from water vapor absorption and has heavier attenuation than adjecent bands thanks to that.
For example Ubiquiti AirFiber uses license free 24GHz.