https://zenwriting.net/desertv....irgo14/therapeutic-m
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On IEEE 802.11n, a mode with a channel width of 40 MHz is specified. This isn't channel bonding, but a single channel with double the older 20 MHz channel width, thus using two adjacent 20 MHz bands. This allows direct doubling of the PHY knowledge fee from a single 20 MHz channel. Most backbone installations install extra cabling or fiber optic pairs than is initially needed. This is finished as a end result of labor costs are larger than the p