There is one max power spec for all 2.4 GHz channels. Power tends to be a bit higher in the center band channels, i.e. around 6, vs. the end channels, because designers don't have a bit more wiggle room on spurious frequencies.Hi,
I see many times with different routers higher channel gives better signal
at device end. My idea was antenna is tuned better at higher channel freq.(better SWR, giving better erp) Even some op. manuals mention this.
Encourages to use higher channel.