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Microwave Intensifies
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this post was submitted on 15 Jul 2025
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This can actually be beneficial if your router is right at the corner of your house. The foil acts as a reflector for some of the radiation that would've been wasted, and thus improves the signal quality within your house.
To actually be beneficial as a reflector, the foil would need to be a specific distance from the antenna, which should be a certain fraction of the wavelength. Source: I used to make parabolic reflectors out of milk cartons about twenty years ago.
This is basic interference physics.
I am 80% sure this is a net loss with modern mu-mimo radios, and it will absolutely trash your phy rate