You might notice that every so often, your dual-band router drops its 5 GHz network without warning. Phones and laptops connected to it drop down to the slower 2.4 GHz band, video calls begin to stutter and freeze, and a few minutes later, everything comes back on a different channel. If you take a look in your router's event log afterward, you might notice the word "RADAR" appearing throughout.
Military radar can make your router switch Wi-Fi channels - here's why - Engadget
Annoying as it may be, there's a good reason why internet routers around the world give the right of way to certain types of radar.
Military radar can make your router switch Wi-Fi channels - here's why
By Luke James
Nov. 9, 2026 9:15 am EST
Bymuratdeniz/Getty Images
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