I tried using spectrum analyzer, but I get error shown on print screen. I have used it before many times on this AP (ePMP2000 running 3.5.6). Under Java Security AP is added into exception list. Anyone having this problem?
I suspect that it might have something with just upgrading my PC Windows to 1903?
Mistery solved. They installed new firewall, ports were open, but firewall was blocking Java scripts with "data filtering" and thats why it didn't work.
It is the same Spectrum Analyzer tool, but made as a native executable instead of Java Web Start so you don't have to mess with Java settings in your browser any more.
Some stations have no separated radio for SA so can not transmit during its usage. In other cases working SA can affect performance. So it is not a bad idea to restrict access to it.