I would like to learn more about WIFI transmission power.
From my understanding a maximum power might "leak" the WIFI signal outside a house and as a result the AP might be listening to other APs in the neibourhood and share the same bandwidth. When several APs share the same channel, they talk to each other to avoid interferences. As a result, speed drops, sometimes dramatically.
A lot of people think :"I have a powerfull AP so I set up transmission to a maximum level to get maximum range and speed". But they are wrong if you pick up other APs signal. Correct me if this is not the case.
So we should always be carefull to find the right balance and avoid maximum power whenever possible, so the AP is not seen by other APs on the same channel. Sometimes you cannot avoid to share a frequency, because the signal of other APs is too strong.
So if someone could explain more about transmission power and interference, this would be nice. For example, what is the impact of clients with strong emission power? Do they also listen to other APs with trong signal. So we also need to lower the transmission power of clients ... but I am not very sure and don't know how to do it (and whether it is worth doing so).
I am also wondering what is default transmission power. Is this same as "maximum"?