I’m running into a strange problem on the 5Ghz channel configuration together with Capsmann.
I’ve the available 5Ghz channel list at http://www.botsenbytes.nl/academy/internet/wifi/wifi-frequenties-en-kanalen.html
when I configure any frequency between 5180 and 5320 Mhz it is complaining that “no supported channel”. When a channel frequency of 5500 or higher is configured there is no complain. The 5Ghz channels 5180 and 5320 Mhz are valid channels when Only AC is configured. What is wrong?
I want to prevent using the DFS channels, so I want to be lower than 5500 Mhz.
Attached also some screenshots



