I've just spent the past few hours configuring 3 new Ubiquiti Wi-Fi access points, which involved a lot of testing for interference and busy channels taken up by nearby access points and other devices.
While the 5 GHz band is reasonably clear (I can have at least 3 non-overlapping 80 MHz channels all to myself), the 2.4 GHz band is far from it (but we knew that already).
I'm lucky enough to live in a regional area, so the number of "interfering access points" in the 2.4 GHz band is limited to about 7 at any given time as I walk around the house, however some douche has decided to configure his Wi-Fi router to take up 40 MHz (essentially channels 5 to 13) rather than sticking with the conventional 20 MHz (which would probably yield him better performance, see why below).
I don't know about you, but people who don't understand technology just shouldn't fiddle with settings (I now see why most APs/consumer routers come with an "auto channel" function).
So I conducted a little experiment, I configured one of my access points to use Channel 1, ~2412 MHz because it's the furthest away from the centre frequency of a microwave oven and manually ramped the power up to the maximum legal limit.
After a little while, the neighbouring access points that were occupying Channel 1 (and 2 and 3) have jumped over to "less congested" channels (as seen in the attached screen shot). Now douchy-mc-douche-bag (the grey parabola) has a bunch of other networks to deal with since he decided to be greedy, while I have a clear channel (yellow and dark blue parabolas).
Am I being mean? Surely I can't be alone in this.
While most of my devices use 5 GHz, not all of them support it.