Before that, there was a 2-band n-standard router with 2 built-in antennas for both bands, i. E. with multiplexing (alternate operation in the ranges, where 300 Mbps is the total speed). During its use, it completely switched to the 5GHz range, but all devices were already ac-standard. The old router supported all existing channels and worked on completely free ones from the second hundred, it turned out that in fact there is only one channel (if you select the 80 MHz band at a speed of 433), which is already used by all neighbors and the signal from some 5 out of 5! So that there is no talk that the frequencies are clogged only if I'm in the shopping center, I attach a screen. In order to somehow correct the situation, I narrowed the channel to 40 MHz at a speed of 200 Mbps. But still it did not fix the situation when I changed the tariff from 50 to 100 Mbps maximum speed, this router cuts it down to 70 Mbps!
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