Before attempting to fix the Wavlink external WiFi antenna issue, double-check that the antennas are properly attached to the router. By logging into the router's web interface, navigate to the WiFi settings page. Turn on "External Antenna" in the "Advanced" part of the WiFi options. Restart the router after saving the changes. Connect the Wavlink router to your modem via Ethernet before configuring it. Wait for the router to boot up after turning it on.
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