It's a cool tool of course, but I have an interesting set of spurs to filter out, and they're quite close to the carrier in some places, over quite a large freq

It's a cool tool of course, but I have an interesting set of spurs to filter out, and they're quite close to the carrier in some places, over quite a large frequency range. I have a set of fixed filters that mostly works, but the next design will need to more completely suppress these spurs over the entire range.