I will check OpenWrt wifi driver
Thanks for the answer.
I'm having some issues with Wifi channel width.
I tried many parameters for "htmode" to change from 40MHz width to 20MHz but I couldn't.
Is there another parameter to change channel width?
Seems that channel bonding is enabled and Wifi driver don't apply my changes.
In the picture you see my device "Node00100" and channels 1 and 5 enabled.
I followed this example and works for me (Huawei MU709s):
Looks like your connection to Community was lost, please wait while we try to reconnect.