5400 Channel

Hi Guys.

I have a problem with one of my clients. He says that he has his AP set to 5400 channel but all the tests i have done with different Routerboards and RouterOS versions seem that can’t support such a channel. Does anyone know if any RouterOS version support this channel?? Normally we are talking about versions without the extra-channels license..

Thanks in advance

You need extra-channels license..

Yes…that was my guess also..
Does anyone know anything else that can make this possible…without the extra channels license??