Problem with performing spectrum-analyzer

Hello guy,
I have problem with performing spectrum-analyzer with NetMetal with v 6.35 I can not do by console and not by Dude (interface desconocida), I have other mikrotik teams and if I can do spectrum without problem, no .. if version firmware or chipset wireless.
Thanks!
Kratos

welcome to the club¡ in mikrotik ac chips the spectrum analyzer does not work