3 ms·Your microwave oven is pretty good at attenuating 2.45 GHz signals.by zikduruqe 1y agoYour microwave oven is pretty good at attenuating 2.45 GHz signals.wiml 1y agoThat's a notch filter, though. Attenuation outside of whatever stopband the microwave door was designed for won't be nearly as good.zikduruqe 1y agoVery true.