Diferencia entre ancho de banda de WiFi de 20MHz y 40MHz . Modo de tarjeta de red inalÃĄmbrica. WiFi ahora existe en el mercado principalmente en cinco modos de tarjetas de red inalÃĄmbrica 802.11a/b/g/n/ac. 1. b tasa mÃĄxima de 11Mbps, banda 2.4G, ancho de banda 22M. 2. a tiene una tasa mÃĄxima de 54Mbps, banda 5G y el mismo ancho de banda de
Yes you should leave it at 20MHz on 2.4Ghz otherwise you are just reducing the already limited non-overlapping channels within that frequency band. If you set it for 40, it will fall back to 20 during noisy operation. If you're going to use 2.4 already, which is really really bad compared to 5 GHz, then go wild.
When to Use 20mhz vs 40mhz vs 80mhz (quickstart.com) Wi-Fi auto channel select & N-only - MikroTik tries to explain 20/40 dynamic rate vs. fixed 40 MHz rate but does not take into account being "neighbour friendly" un*ke in Sholistd I enable/disable 20/40 MHz Coexistence? : orbi (reddit.com)
Some older legacy devices don't support 40Mhz, thus they only support 20Mhz. If you have any legacy devices, then you need to keep 20/40Mhz enabled so these older devices can connect to the wifi. If you don't, then you can enable 40Mhz only on 2.4Ghz. You don't have to always use 20/40Mhz channel width. Also there was something that was called
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wifi 20mhz vs 40mhz