So, now that we have progressed from occupied bandwidth to SPD and on to ACPR, we have identified the test method that will give us a true indication of how good a neighbor a system is.
Anyone who modifies their transmitter filtering for whatever purpose - extended frequency response or data / digital voice transmission - should measure the before and after ACPR.
This is a documented test method, commercial best practice and thus should also be amateur best practice.
I would be very interested to see the test results for any of these projects that list members have worked on - please post them.
