Eddie Interesting stuff. I have never looked for the old Project Sanguine signals around 76Hz or Zefs at 82Hz. Somewhere I have an old US Navy or NATO/AGARD paper written in the 1960s entitled "D
Hello Stefan I was prompted to take a look 'down low' a couple of weeks ago when SM5LE said, look 'Schumann resonances'. You will be surprised that I am using your E-Probe, unmodified. I wasn't expec
Hello Eddie, Well, your noise floor below 5 kHz seems to look much better than here. I started some ULF tests last year but have (temporarely!) stopped due to the bad SNR and other more important pro
Hello Eddie, VLF, Your additional grabber windows are interesting. Remembers me to the site of Renato Romero ;-) What antenna do you use for displaying the range of 0...50 Hz? My probe circuit has a