> There are 7 stubs, 4 are on the pass cans, 3 in-between the 4 > resonators. Adjusting any of the 3 stubs (between each of the 4 > resonators) has little effect on the skirt.
The between adjust the size of the aperature (coupling) between filters.
You won't find a whole lot of change in the passband response as you adjust
them; that's just the way they are (or at least on the few dozen or so of
those that I've tuned).
--- Jeff
