Would adding aluminium foil behind the WiFi router concentrate the signal and increase the gain of the antenna in one direction? - Quora
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Increase WIFI Signal by creating an aluminum foil screen. | Diy life hacks, Diy life, Diy electronics
Wrapping Router In Aluminum Foil Speeds Up Wi-Fi | It turns out aluminum foil can boost your Wi-Fi speed | By NowThis Earth | Facebook
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