hi, my question is if in mode n only with a r52hn the spectral bandwith is of 40mhz or 20mhz? and if i want to works in 20mhz where i configured this option? thans an sorry by my bad english.
if the HT extension channel (HT tab of wireless interface in winbox) is disabled it will be 20Mhz channel - if HT extension channel is set to “above” or “below” it will be 40
/interface wireless set 0 ht-extension-channel=disabled should set it to 20Mhz (assuming the R52hn card is wireless interface 0)
If trying to use 40Mhz - I would recommend using “above”. I have not yet been able to get any of the Mikrotik branded cards to work with extension channel set to “below”
thanks