Normal decible meters don’t register it because why would you make one that did? Most decibel meters are made specifically to detect threats to your hearing.
My understanding is that meters made for this range can detect it though. So at least the presence of the sound should be verifiable. That of course does nothing to prove the other claims.
“Do not register on decibel meters”
Get a better decibel meter, then?
Normal decible meters don’t register it because why would you make one that did? Most decibel meters are made specifically to detect threats to your hearing. My understanding is that meters made for this range can detect it though. So at least the presence of the sound should be verifiable. That of course does nothing to prove the other claims.
We went and got the good meter, from the safe. It burned out.
Did you get too close to a 5G tower?