Petra, where are you? There are many new folks on syzygy with tones, and no direction!! They need a teacher, and the blind are leading the blind over there, me included. I hear tones, and can usually pin it down to a fault, but Im blessed with living in alaska,,, duh. I wish for science's sake that some one with credentials, and detailed tracking methods, could just gather all the other sensitives and track their tones,, triangulate their locations,, and put this phenomenom on paper for those who will listen to see. I beleive you are on the right track by persueing this, but how is the question,,, as there are so many, so spread out over so many miles. How about a general roundup off syzygy boards,, or do you think they all are quacking? I think you may have some who could really help out if you could figure out a way to "study" them. Team work may pay off... so I will get off my soapbox,, Cori.ak