> but 5ghz surely not, with over a hundred channels On which planet do you reside in which this is remotely true? Many devices (clients and APs alike) do not

> but 5ghz surely not, with over a hundred channels On which planet do you reside in which this is remotely true? Many devices (clients and APs alike) do not properly implement DFS. Which leaves the number of usable channels around a dozen or so. And that's in 20 MHz mode. In his quest for more speed, my neighbor runs his network in 40 MHz or 80 MHz mode (can't remember which) which cuts the amount of usable channels in half / quarters. So the rest of the neighborhood deals with interference while he binges 4K Netflix with his Y-fronts around his ankles on the toilet.