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Unless you've got clear line of sight between the two, then you probably won't want to put it much farther than 30 feet away from the router, and ideally with as few walls as possible between the two, and between the extender and your dead zone. Like all range extenders, your best bet is to place them somewhere in between your router and the dead zone where you'd most like to improve speeds. If you can maintain steady speeds above 50Mbps, then you should be able to surf the web, check email, refresh your Twitter feed and stream HD video. The most basic plug-in models won't cost you more than $50 apiece, and most will promise to deliver speeds of up to a few hundred megabits per second. If you can find an extender from the same company that makes your router, great, but most are designed to work with routers from all sorts of manufacturers. You'll find extenders from all sorts of manufacturers as you shop, but your best bet is just to stick with the big, established names in wireless networking, such as Netgear, Linksys, TP-Link, D-Link and Ubiquiti.
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