Hi to all,
I know the date of implementation of these functions?
http://wiki.mikrotik.com/wiki/Manual:Wireless_Advanced_Channels
Regards.
They are already implemented, but you need to acquire a (free) license extension from Mikrotik in order to use them. Also, they are not supported on the latest 9xx routerboards. 
Hi nkourtzis, thanks for reply, how and where can I buy the license?
Regards,
Tony.
RB 711-5Hn with AR5008 Wireless Network Adapter (rev: 1) not supported!!!
Yes, the manual describes this:
Currently only Atheros AR92xx based chips support non-standard center frequencies
Hello Normis, how active the advanced channel???
I want to test it on some PTP.
Regards.
You have to have an account on the Mikrotik site. You go to the last tab (“Account”) and login. Select “Support contact form” (right menu column) and tell Mikrotik that you want to activate the extra channels feature on your account. They will send you a legal form to print out, sign and email it back to them. Then, they will activate the feature on your account. This essentially means that you will be able to upgrade any Mikrotik license with this feature.
To do this, you first have to import the license key from the device. In either the webfig or the winbox, you go to System → License and copy the Software ID. You then login to your account on the Mikrotik site, select “request key from another account” (left menu column) and paste the ID. Then go back to main menu, select “all keys” and navigate to the key you just entered (the keys are placed in folders on a folder tree). Select the key row and click the “Upgrade” button below the table.
Now open up a Winbox to your device, go to System → License and click “Update License Key” on the right. That’s it!
Ok, many thanks!
Tony.