(In reply to Clemens Famulla-Conrad from comment #7) > AFAIK linux is handling these stuff with > https://wireless.wiki.kernel.org/en/developers/regulatory/wireless-regdb > > That mean, if you set your COUNTRY settings, channels get enabled or > disabled, corresponding to your location. > > There are also manufactures which burn these things into the firmware. Not > sure if it is then possible to bypass these (or legal). Accordingly to the german forum page https://forum-raspberrypi.de/forum/thread/34332-rpi3-trotz-kernel-4-4-50-kein-wlan-kanal-12-13/ it is possible ... but the tools to do so are missed (crda via udev rule)