How to set up Wifi Channels?

RouterOS Beginner Basics
1

Hi Everyone!

I’m new to Mikrotik, just purchased a Hap Ax2, not so new about networking. I did the CCNA course like 10 years ago and haven’t done so much networking since then. So my first question is also related to that. Is there a place when I can learn to use Router OS 7? Like video courses, Lab scenarios practice examples, common setups for different cases, etc.
I have seen the YT channel, but I could only find this? https://www.youtube.com/watch?v=h_LWPK-IeQw

Now, to what I really need help with right now. I have noticed that around my place, most of my neighbor’s WiFi AP are sitting on Channel 1-7. I was thinking to switch my 2.4GHz and 5GHz APs to 6-12, for example. How can I do this change? I don’t see anything on the “channel dropbox” and I saw that maybe I need to set them up myself? So, how can I do this?

2

I have best experience with RB selecting the best channels (from the list 2412, 2437 and 2462) in combination with reselect-interval:
https://help.mikrotik.com/docs/spaces/ROS/pages/224559120/WiFi#WiFi-Channelproperties:

/interface wifi channel add disabled=no frequency=2412,2437,2462 name=CHAN-2G reselect-interval=4h..6h width=20mhz

Then refer to the channel in your configuration and use this configuration in your provisioning (or set it to the wifi interface manually when not using CAPsMAN):

/interface wifi configuration add channel=CHAN-2G country=Netherlands disabled=no mode=ap name=MYSSID-CONF-2G security=MYSSID-PSK ssid=MYSSID steering=MYSSID-steering tx-power=9
/interface wifi provisioning add action=create-dynamic-enabled disabled=no master-configuration=MYSSID-CONF-2G name-format="%I - 2G" supported-bands=2ghz-ax

Especially because my neighbors are switching their channels often.

Same is for 5GHz radio, but I guess you understand the benefits.

3

I would like to ask - has anything changed about the algorithm?

On the old drivers, it seemed to me that the AP was selecting channels based only on the number of detected networks on a given channel, which was quite a problem for us because the WiFi from the family houses was unused in the morning and those channels were beautifully clear. However, the auto selection picked up same channels as the office next door and thus the throughput was very low during business hours.