How You and Your Neighbors Are Making Each Other’s Wi-Fi Worse (and What You Can Do About It): "Wi-Fi networks interfere with each other. Older Wi-Fi standards are even worse about this, so your old Wi-Fi hardware isn’t just hurting your network — it’s interfering with your neighbors, too.
All that interference is bad for everyone’s network, even yours. Unless you live out in the country with no one else around, this is something you need to think about."
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