Back in the 1990’s I was studying frequencies. It began with a frequency chart of voices and all musical instruments in a sound engineer’s handbook I was studying. It expanded from there.
The Japanese were doing research on a frequency band between the infrared and microwave frequencies that had very special attributes. It allowed them to photograph the contents of a room, including the people inside through the walls from outside the building.
Years later when the Havana Syndrome was harming our workers in Cuba, I immediately knew it was the Russians using this technology to spy on our embassy.
Yep, I am absolutely hip to frequencies and resonance. In fact I have been wanting to expose the marketing fraud that is “5G”. In reality true 5G band is only available in some metro demographics. What they are selling as “5G everywhere” is actually only upper frequencies of the 4G band. They are flat out lying and committing fraud with false advertisement.