GoKawiilGuide outlines optimal Wi-Fi extender placement for best signal
A technical guide explains that Wi-Fi extenders generally work best placed 20 to 40 feet from a router, depending on whether the device has internal or external antennas. It notes that obstacles like concrete, brick, metal and appliances can weaken signal strength, and recommends using an extender's signal LED to fine-tune placement rather than relying on fixed distance rules.