For information, I have the 4th version of the router (Archer C20 (RU) v.4). I bought based on reviews from ya. Mareket. In vain. The signal strength is below the plinth. The router is on the bedside table in the hallway, the speed was measured in the hall (adjacent room) with the doors open. That is, in fact, direct visibility. The signal level does not even reach -60 dBm. I am generally silent about the far room. A signal of -30 dBm can be achieved only if you bring the phone 20 cm to the antennas. Meryl with two different devices (Android and iOs). We are talking about a 2.4 GHz network. Pay attention to the second signal in the screenshot, this is the signal of the neighbor's router located behind the concrete wall. Firmware version 0.9.1 32022 v0283.0 Build 170315 Rel.39481n. The most current as of January 02, 2022. There are no third-party firmware for version 4, at least not yet. I do not advise taking until alternative firmware appears.
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