When doing your Reverse Lookup, you'll have to click "Include Octave". I'm not sure how this will work out, but recent research is showing that the range for cancer pathogens is a much higher range than previously thought. Older equipment wasn't able to generate frequencies in that range without distortion, etc., so harmonics were being used to kill them. This is fine, but it is better to find the best frequency so the body isn't bombarded with more energy than needed.
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