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A comment on I amplified my home's Wi-Fi with aluminum foil. Parent comment

Re:I amplified my home's Wi-Fi with aluminum foil by blackguardx on Tuesday December 26, 2017 @02:10PM (#16010293)
It has to do with quarter wavelength features making good antennas.

I would say that you want to be less than 1/10 of the wavelength to minimize the effect though.

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