Yeah, the GNF feature was better than nothing. But the DSP noise reduction that these new radios have is like night and day. I usually run mine on level 2 and occasionally turn it off to see the difference it makes, it has spoiled me. Now it is hard, almost painful to listen to my old radios...I'm gonna hide behind a wall and throw this out there... GNF. lots of people would love to destroy GNF, and it only seems to work with very strong signals. to keep post related, does anybody have insight on the variable nrc for the q6p? i would imagine it works far better than the all or nothin nrc of the k-po dx5000