The standard width is 20MHz…
Besides, a 40MHz channel width equals 2 * 20MHz channels…
The reason you can’t set a fixed 40MHz width there is because its an advanced channel. Superchannel could unlock it, but it is only for testing purposes and nothing more…
I ve already answered that in my second post, channel width should be 20 MHz…
I also tried to explain you that 20/40MHz means either
1×20 MHz channel or 2x20 MHz channels, so isnt it obvious that a 20 MHz channel width is used and not a 40MHz one ?
I have asked wich one does it feat to get 40MHz, you write 2 * 20MHz=which is doesent fit. And you ask me silly questions. Does it mean if i have cerificate i must to know any quastion..i something i don’t know i have to toss in a bin my cer.