Monday, 9 February 2026

Why Your Microwave Oven Is Waging a Silent War on Your Wi-Fi Signal — And What You Can Do About It

 


The root of this technological turf war lies in a shared slice of the electromagnetic spectrum. Both microwave ovens and Wi-Fi routers operate at approximately 2.4 GHz, a frequency band that has become one of the most congested in modern households. This isn’t an unfortunate accident of engineering; it’s a consequence of regulatory decisions made decades ago that designated 2.4 GHz as part of the Industrial, Scientific, and Medical (ISM) band — an unlicensed frequency range that anyone can use without special permission from the Federal Communications Commission.

Microwave ovens are designed with shielding — a Faraday cage built into the door and body of the appliance — to contain the vast majority of their radiation. However, no shielding is perfect. Even a well-maintained microwave oven can leak small amounts of electromagnetic energy, and at the power levels involved (typically 700 to 1,200 watts), even a tiny fraction of leakage represents a significant amount of interference relative to the milliwatt-level signals your Wi-Fi router produces. Older microwaves, or those with worn door seals, can be particularly problematic, emitting enough stray radiation to disrupt wireless connections throughout an entire floor of a home.

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#WiFi #Microwave #Interference #TechTips #HomeNetwork #Wireless #Router #Connectivity #SignalBoost

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