Curso Wi-Fi Básico/Avançado agora na Udemy:Wi-Fi Estável - Bási

A narrower channel has a higher signal-to-noise (SNR) ratio than a wider one. You lose 3dB of SNR every time you double the channel width. This is mostly irrelevant when you're in range (good SNR). But it will make a difference at the edge of coverage where your connection quality is limited by the SNR. High-density Wi-Fi is a design strategy for large deployments to provide pervasive connectivity to clients when a high number of clients are expected to connect to Access Points within a small space. (some will support 20-Mhz, some will support 40-MHz and some will support 80-Mhz channels). Due to this, it is better to have each client Muchos fabricantes de routers se han adaptado a la norma, por lo que no permiten que los usuarios seleccionen arbitrariamente los 40 MHz, sino que se limitan a un «Auto 20/40». Por lo tanto, si usted tiene la entrada «Auto 20/40», el router sólo utilizará 40 MHz si los canales vecinos sólo «libre» de lo contrario, utilizará 20 MHz
\n\n wifi 20mhz vs 40mhz
Learn the difference between 2.4 GHz and 5 GHz Wi-Fi bands, and how to choose the right channel width for your Wi-Fi performance. Find out the advantages and disadvantages of using 20 MHz, 40 MHz, and 80 MHz channel widths, and how to optimize your Wi-Fi network with best practices and tips. For 2.4Ghz stick to 20MHz channels on 1,6,11 only. If you're in a country that allows above 11 you may have more options but channel 2/4 will overlap and cause more interference. Generally it's recommended not to use auto channel selection. For 5GHz, use wider channels and use that for higher bandwidth applications/devices. . 132 171 24 337 470 170 38 138

wifi 20mhz vs 40mhz