What could be producing this infrasound in my home? (see image - 2 & 4 Hz around 75dB, 7 & 9 Hz about 60dB)
It's a residential neighborhood and there are no industrial or commercial buildings for miles. Location is KC suburbs - no windmills nearby. HVAC was not running when this was recorded...
See video below of continuous 24/7 stream of 397-434 Mhz signals in my home (dBm between -67 and -73) measured with GQ EMF-390. Scanned everything in the house, basement & garage and nothing we have is emitting this.
https://youtu.be/1kl9BqL91fw
Suspect nearby neighbor (who is an engineer) may...