KD0REQ,
It is not the wiring, it is not anything else related to the building or grounding or anything else. It is THE BREAKERS themselves. This is a long time known thing and it is why this thread is 53 and more pages long. The breakers in the panels of all the homes near to K8CEB will have to be changed out.
WA3SKN, we absolutely should NOT start a new thread. The history of this huge Eaton problem should stay in this thread for great documentation of the ongoing problem. One can see that in an 8 year period, there are still people (and hams) who have never heard of this problem.
K8CEB, glad you were able to get a hold of Eaton and get new/improved Eaton AFCI breakers. All your neighbors (who have the same breakers) need to also be swapped to new non-susceptible AFCI breakers.
Sorry it took me so long to see new posts in here. I usually check every coupla weeks, but I was remiss in that duty.
I know it is long, but the info is in this thread on how to get a hold of Eaton about this problem. Or, hopefully, K8CEB will chime back in soon.