What is the optimum signal strength range for placing the Tenda A9 extender?
A signal strength of 40%–79% is considered the optimum extending location for the A9. You should move the extender closer to the router if the LED is solid orange, aiming to achieve a solid green LED which indicates a strong extended signal.
From the official Tenda A9 Wireless N300 Universal Range Extender manual, page 1
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