是的，水和某些电器的存在可以显着从5G中继器中降解信号[2] [6] [8]。
**水：水特别擅长吸收无线电波，尤其是在2.4 GHz附近的频率下，这是在Wi-Fi中常用的[2]。水的属性，包括其质量和反射性，会阻塞和扭曲射频信号[2]。大型水物(例如水族馆或水基加热系统)可能会阻碍Wi-Fi信号[8]。大气水蒸气也会导致信号减少，大雨会影响较弱的信号[4]。
**电器：电器，尤其是用冰箱等金属板制造的设备，可以反映Wi-Fi信号[6]。更重要的是，在与Wi-Fi相同的光谱中发射无线电波的设备，例如在2.4 GHz下运行的微波炉，可能会引起干扰[6]。电器附近的Wi-Fi路由器的放置可能导致信号降解[6]。
引用：
[1] https://www.7signal.com/news/blog/indoor-cell-phone-phone-signal-booster-destroys-5ghz-band
[2] https://superuser.com/questions/289913/why-if-i-put-wireless-access-point-near-water-fish-fish-fish-fish-tank-will-will-will-degrade-signa
[3] https://www.microwavejournal.com/articles/38666-optimizing-active-active-repeater-racteater-architectures-for-distributed-5G-Networks
[4] https://www.pagerpower.com/news/5g-strength-and-interference/
[5] https://www.123.net/blog/understanding-the-loss-of-signal-a-comprehmiss-guide/
[6] https://choice.community/t/can-a-fridge-and-other-appliances-block-my-wifi-signal/16520
[7] https://mysignalboosters.com/blog/what-the-the-causes-for-poor-mobile-signal-reception/
[8] https://eyenetworks.no/en/10-things-things-that-disturb-and-disturb-and-block-wi-fi-signals/
[9] https://www.wilsonpro.com/blog/top-5-sorprising-things-things-that-block-your-cell-signal