using "spectral-history"- understand the use of it

RouterOS General
1

Hello,
I want to see I understand it right
when I see a black - it’s mean that the freq is clean, no ? the radio can’t see nothing in that freq
so if I look in my example -
spectral.PNG

freq 2475 should be that best to use, no?

2

yes, exactly

3

o.k.
because in this freq the signal it the worst for me
maybe the problem is in the far side , I will check

just wanted to be sure

Thanks ,