card bug or MT bug?

RouterOS Wireless Networking
1

Hello.
I have rb 411ar with r52emi card.When i set 5mhz channel width to the build-in card and scan with r52emi…result you can see in attach.my 5mhz turn to at least 80 mhz.What this RoS bug or card bug?
Regards
bug.jpg

2

UH?!

This is signal to noise. Is noise floor - signal…