High gain antennas are pretty tricky: they interfere with each other if they're too close together (as much with the most home routers), and their directionality requires you to locate your router (and possibly even your devices) very carefully to avoid blind spots; As a bonus, once neighboring routers receive a signal from yours, they will increase their transmit power to combat interference. If you care about these issues, you'll love the extended coverage these antennas offer!
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