Actually, my personal experiments with it have been over the last 15 years. As mentioned in my post above either left or right ear was verifiable within hours or days of an event or circumstance.
There have been times when I can hear a constant hum or tone in general as a ringing in the head and that is definitely the microwave systems abroad. I do think the tones became existent with the startup of the Cellular and microwave systems. yes they are tuned into the same frequency as our skull so perhaps now we can all find out when someone accesses our 'data', maybe not a side effect 'they' had counted on.
And yes recently there has been a lot of ringing activity that seems to be a little louder or more tone intense than past experience.
May only beneficial tones that raise our vibration be effective!
All other negative intended tones return to sender.
